CN106771628A - Load testing device and load test approach - Google Patents
Load testing device and load test approach Download PDFInfo
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- CN106771628A CN106771628A CN201611146173.XA CN201611146173A CN106771628A CN 106771628 A CN106771628 A CN 106771628A CN 201611146173 A CN201611146173 A CN 201611146173A CN 106771628 A CN106771628 A CN 106771628A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
- G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio
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Abstract
The present disclosure discloses a kind of load testing device and load test approach.Load testing device is electrically connected with a test system.The load testing device includes one first radio frequency handover module, a transport module and a load blocks.First radio frequency handover module includes one first switching switch element and one second switching switch element.Transport module includes that one first transmission line connection first switches switch element and one second transmission line connection second switches switch element.The length of the first transmission line is unequal with the length of the second transmission line.Test system is processed by the first switching switch element and the first transmission line with carrying out one first load testing to load blocks, test system is processed by the second switching switch element and the second transmission line with carrying out one second load testing to load blocks, and the time interval between the treatment of the first load testing and the treatment of the second load testing is less than or equal to a scheduled time.
Description
Technical field
This disclosure relates to a kind of load testing device, and it is particularly a kind of with the load testing for being switched fast test processes
Device.
Background technology
In recent years, mobile device and wireless network flourish so that radio receiving transmitting module technology gets over the maturation for becoming,
Then it is all the more harsh particularly on communication quality but due to user is more and more for the requirement of mobile device.Wirelessly
Transceiver module is on load testing, although has the test equipment of correlation available, but but needs phase on the time of test
When time long and test equipment costliness, interval time of each test generally requires more than 1-3 minutes, therefore, one is wireless
The complete testing time of transceiver module, generally it is accomplished by 2-3 more than hour.
Therefore, how a load testing device that testing time and reduces cost can be greatly shortened is provided, is in fact
One important topic of current industry.
The content of the invention
In view of this, the embodiment of the present disclosure provides a kind of load testing device.It is to be measured that load testing device is electrically connected with one
Device.The load testing device includes one first radio frequency handover module, a transport module and a load blocks.First radio frequency
Handover module includes one first switching switch element and one second switching switch element.Transport module includes one first transmission line
Connection first switches switch element and one second transmission line connection second switches switch element.The length of the first transmission line and the
The length of two transmission lines is unequal.Load blocks include one first load and one second load.First load and second negative
Load connects first transmission line and the second transmission line of the transport module respectively.Test system is by the first switching switch element
And first transmission line processed so that load blocks are carried out with one first load testing, test system by the second switching switch element and
Second transmission line is processed with carrying out one second load testing to load blocks, at the treatment of the first load testing and the second load testing
Time interval between reason is less than or equal to a scheduled time.
Preferably, the first switching switch element and the first transmission line provide the transmission characteristic of a first phase, second jointly
Switching switch element and the second transmission line provide the transmission characteristic of a second phase jointly, and first phase is not equal to second phase.
Preferably, the scheduled time is 1 second.
Preferably, the first switching switch element and the second switching switch element include a switch and an impedance respectively.
Preferably, the first load of load blocks is identical with the impedance operator of the second load.
Preferably, the first load of load blocks and the impedance operator of the second load are to differ.
Preferably, load testing device also includes one second radio frequency handover module, is connected to transport module and load blocks
Between.First radio frequency handover module, the second radio frequency handover module and transport module provide the transmission of out of phase jointly
Characteristic.
Preferably, load testing device is also connected to the second radio frequency handover module and bears including one the 3rd radio frequency handover module
Carry between module, the first radio frequency handover module, the second radio frequency handover module, the 3rd radio frequency handover module and transport module are common
The transmission characteristic of out of phase is provided.
The embodiment of the present disclosure provides a kind of load testing device.Load testing device connects a test system.Load is surveyed
Trial assembly is put including at least a radio frequency handover module, a transport module and a load blocks.Radio frequency handover module is cut including multiple
Change switch element.Transport module includes multiple transmission lines, and multiple switching switch elements are connected respectively.Load blocks connection transmission mould
Block.Test system is carried out at least two load testings by least a radio frequency handover module, transport module with to load blocks
Reason, the time interval between the treatment of at least two load testings is less than or equal to a scheduled time.
Preferably, any two switching switch elements with its each it is corresponding connect transmission line provide respectively out of phase transmission spy
Property, the transmission characteristic of the multiple out of phase is differing from each other.
Preferably, the scheduled time is 1 second.The embodiment of the present disclosure provides a kind of load test approach, it is adaptable to which one is negative
Carry test device, load testing device is electrically connected with a test system, load testing device includes multiple switching switch elements, many
Individual transmission line and a load blocks.Load testing device is comprised the following steps：To it is the multiple switching switch element in extremely
Few one first switching switch element is switched over, so that test system is by the first switching switch element and the multiple transmission line
One first transmission line load blocks are carried out one first load testing treatment；After completing the treatment of the first load testing, interval one
The scheduled time, at least one second switching switch element in the multiple switching switch element is switched over, so that dress to be measured
Put carries out one second load to load blocks by one second transmission line of the second switching switch element and the multiple transmission line
Test processes；And carry out processing the load testing of a predetermined phase quantity of load blocks in proper order.Wherein, the first transmission line
Length it is unequal with the length of the second transmission line.
Preferably, the scheduled time was less than or equal to 1 second.
Preferably, the first load and the second load respectively for load blocks carries out the load survey of predetermined phase quantity
Examination is processed.
The embodiment of the present disclosure provides a kind of load testing device.Load testing device is electrically connected with a test system.It is negative
Carrying test device includes：One first radio frequency handover module, a transport module, one second radio frequency handover module and a load mould
Block.First radio frequency handover module, including one first switching switch element and one second switching switch element.Transport module includes
One first transmission line connection first switches switch element and one second transmission line, and connection second switches switch element.First passes
The length of defeated line is unequal with the length of the second transmission line.Second radio frequency handover module be connected to transport module and load blocks it
Between.Load blocks connect first transmission line and the second transmission line of transport module by the second radio frequency handover module.It is described to treat
Survey device carries out one first by the first switching switch element, the first transmission line and the second radio frequency handover module with to load blocks
Load testing treatment, test system is by the second switching switch element, the second transmission line and the second radio frequency handover module with to negative
Carrying module carries out the treatment of one second load testing, the time interval between the treatment of the first load testing and the treatment of the second load testing
Less than or equal to a scheduled time.
Preferably, the scheduled time was less than or equal to 1 second.
Preferably, the first radio frequency handover module, the second radio frequency handover module and transport module provide out of phase jointly
Transmission characteristic.
In sum, the load testing device of the embodiment of the present disclosure, can effectively be reduced between out of phase test processes
Time interval, and then reduce the integrated testability time, not only accelerate testing efficiency, can also improve shipment test QC detection side
Formula, from part, examination at random is changed to full inspection, is effectively lifted out the efficiency of kinds of goods pipe, in addition, the load testing dress of the embodiment of the present disclosure
Put can effective reduces cost, more can largely manufacture and be arranged at producing line and quickly tested.
It is that the features described above and advantage of the disclosure can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing
Figure of description, is described in detail below.
Brief description of the drawings
Shown in Fig. 1 is a load testing device and the schematic diagram of a test system of the embodiment of the present disclosure.
Shown in Fig. 2 is the schematic diagram of disclosure load testing.
Shown in Fig. 3 is a load testing device and another schematic diagram of a test system of the embodiment of the present disclosure.
Shown in Fig. 4 is the load testing device and another schematic diagram of test system of the embodiment of the present disclosure.
Shown in Fig. 5 is the load testing device and another schematic diagram of test system of the embodiment of the present disclosure.
Shown in Fig. 6 for the embodiment of the present disclosure a kind of load test approach flow chart.
Shown in Fig. 7 for the embodiment of the present disclosure load test approach another flow chart.
Specific embodiment
Various exemplary embodiments will be more fully described referring to Figure of description below, show in Figure of description
Some exemplary embodiments.However, disclosure concept may embody in many different forms, and should not be construed as limited by herein
Middle illustrated exemplary embodiments.Specifically, there is provided these exemplary embodiments cause the disclosure will be it is detailed and complete,
And the category of disclosure concept will be fully passed on to those who familiarize themselves with the technology.In all accompanying drawings, can be lavished praise on oneself in order to clear layer and
The size and relative size in area.Similar numeral indicates similar assembly all the time.
It should be understood that although herein various assemblies may be described using term first, second, third, etc., these groups
Part should not be limited by these terms.These terms are to distinguish a component with another component.Therefore, first group for being discussed herein below
Part can be described as teaching of second component without departing from disclosure concept.As used herein, term " and/or " include it is associated
The all combinations for listing any one and one or more in project.
Hereinafter accompanying drawing will be coordinated to illustrate the load testing device with least one embodiment, however, following embodiments
And be not used to limit content of this disclosure.
(embodiment of disclosure load testing device)
Fig. 1 is refer to, shown in Fig. 1 is a load testing device and a test system DUT of the embodiment of the present disclosure
Schematic diagram.Shown in Fig. 2 is the schematic diagram of disclosure load testing.
Load testing device 1 includes one first radio frequency handover module 11, a transport module 12 and a load blocks 13.Treat
Survey device DUT carries out voltage standing wave ratio (Voltage Standing-Wave Ratio) or reflection system by load testing device 1
Several tests, its test result is then as shown in Figure 2.In the present embodiment, test system DUT is a radio receiving transmitting module, can
Receive or send signal of communication, that is, in the present embodiment, out of phase and impedance are carried out using load testing module
Load testing, to detect the change of the wireless receiving and dispatching performance of test system.It is, test system DUT can be by load testing
Device 1 carries out the test of the reflectance factor and voltage standing wave ratio under out of phase even different loads.
Fig. 3 is refer to, shown in Fig. 3 is a load testing device 1 and a test system DUT of the embodiment of the present disclosure
Another schematic diagram.First radio frequency handover module 11 includes one first switching switch element 1101, one second switching switch element
1102nd, one the 3rd switching switch element 1103, one the 4th switching switch element 1104, one the 5th switching switch element 1105,
6th switching switch element 1106, one the 7th switching switch element 1107, one the 8th switching switch element 1108, one the 9th switching
Switch element 1109,1 the tenth switching switch element 1110,1 the 11st switching switch element 1111 and the 12nd switch
Switch element 1112.
Transport module 12 includes one first transmission line 1201, the transmission line 1203, of one second transmission line 1202, the 3rd the
Four transmission lines 1204, one the 5th transmission line 1205, one the 6th transmission line 1206, one the 7th transmission line 1207, one the 8th transmission line
1208th, one the 9th transmission line 1209,1 the tenth transmission line 1210,1 the 11st transmission line 1211 and 1 the 12nd transmission line
1212。
The one of the first switching switching switch element 1112 of switch element 1101 to the 12nd of the first radio frequency handover module 11
End connects the other end of the transmission line 1212 of the first transmission line 1201 to the 12nd of transport module 12 respectively.In the present embodiment,
One end of the transmission line 1212 of first transmission line 1201 to the 12nd of the connection transport module 12 of load blocks 13.Load testing device
The other end of 1 the first radio frequency handover module 11 then connects test system DUT.In the present embodiment, load blocks 13 include one
The load 1305,1 the of first load, 1301, one second load, 1302,1 the 3rd load, 1303,1 the 4th load 1304, the 5th
The load 1310,1 the tenth of six loads, 1306, one the 7th load, 1307, one the 8th load, 1308, one the 9th load 1309, the tenth
One load 1311 and 1 the 12nd load 1312.First transmission line 1201 of transport module 12, the second transmission line the 1202, the 3rd
Transmission line 1203, the 4th transmission line 1204, the 5th transmission line 1205, the 6th transmission line 1206, the 7th transmission line the 1207, the 8th are passed
1212 points of defeated line 1208, the 9th transmission line 1209, the tenth transmission line 1210, the 11st transmission line 1211 and the 12nd transmission line
Not Lian Jie first load the 1301, second load the 1302, the 3rd load the 1304, the 5th load of the 1303, the 4th load it is the 1305, the 6th negative
Carry the 1306, the 7th load the 1307, the 8th load the 1308, the 9th load the 1309, the tenth load the 1310, the 11st load 1311 and
12nd load 1312.
In the present embodiment, each load of load blocks 13, its impedance operator is identical.In other embodiments,
The impedance operator of the even load can be designed according to actual test demand, not be restricted in the disclosure.
The structure of the first switching switching switch element 1112 of switch element 1101 to the 12nd is similar to, respectively including a switch
A SW and impedance R.
Wherein, 1101 and first transmission line of the first switching switch element, the 1201 common transmission for providing a first phase are special
Property.The common transmission characteristic that a second phase is provided of second switching switch element, 1102 and second transmission line 1202.3rd cuts
Change the common transmission characteristic that a third phase is provided of 1103 and the 3rd transmission line of switch element 1203.4th switching switch element
1104 and the 4th common transmission characteristic that one the 4th phase is provided of transmission line 1204.5th switching switch element 1105 and the
The common transmission characteristic that one the 5th phase is provided of five transmission line 1205.The 6th switching transmission line of switch element 1106 and the 6th
The 1206 common transmission characteristics that one the 6th phase is provided.The 7th switching transmission line 1207 of switch element 1107 and the 7th is carried jointly
For the transmission characteristic of one the 7th phase.8th switching switch element, 1108 and the 8th transmission line 1208, one the 8th phase of common offer
The transmission characteristic of position.9th switching switch element, 1109 and the 9th transmission line, the 1209 common transmission for providing one the 9th phase are special
Property.The common transmission characteristic that 1 the tenth phase is provided of tenth switching switch element, 1110 and the tenth transmission line 1210.11st
The common transmission characteristic that 1 the 11st phase is provided of 1111 and the 11st transmission line of switching switch element 1211.12nd switching
The common transmission characteristic that 1 the tenth two phase is provided of 1112 and the 12nd transmission line of switch element 1212.
In the present embodiment, first phase, second phase, third phase, the 4th phase, the 5th phase, the 6th phase,
Seven phases, eight-phase, the 9th phase, the tenth phase, the 11st phase and the tenth two phase be respectively 30 degree, 60 degree, 90
Degree, 120 degree, 150 degree, 180 degree, 210 degree, 240 degree, 270 degree, 300 degree, 330 degree and 360 degree.Namely the present embodiment
Load testing device 1 switches the transmission line of switch element 1112 and first by the first switching switch element 1101 to the 12nd
1201 to the 12nd transmission lines 1212, with 30 degree of phase difference, split the out of phase of signal period, to provide different phases
The load characteristic of position.Therefore test system DUT can carry out the load testing of out of phase by load testing device 1.
In the present embodiment, the length for being shorter in length than the second transmission line 1202 of the first transmission line 1201.Second transmission line
1202 length for being shorter in length than the 3rd transmission line 1203.The length for being shorter in length than the 4th transmission line 1204 of the 3rd transmission line 1203
Degree.The length for being shorter in length than the 5th transmission line 1205 of the 4th transmission line 1204.5th transmission line 1205 is shorter in length than the 6th
The length of transmission line 1206.The length for being shorter in length than the 7th transmission line 1207 of the 6th transmission line 1206.7th transmission line 1207
The length for being shorter in length than the 8th transmission line 1208.The length for being shorter in length than the 9th transmission line 1209 of the 8th transmission line 1208.
The length for being shorter in length than the tenth transmission line 1210 of the 9th transmission line 1209.Tenth transmission line 1210 is shorter in length than the 11st biography
The length of defeated line 1211.The length for being shorter in length than the 12nd transmission line 1212 of the 11st transmission line 1211.The length of transmission line
The change of signal phase is directly affected, however, in the present embodiment, while consider in the first radio frequency handover module 11 first cutting
The transmission characteristic that switch element 1101 to the 12nd switches switch element 1112 is changed, for example：Resistive impedance, capacitive impedance or
It is inductive impedance.Therefore, collocation first switches the switching switch element 1112 and first of switch element 1101 to the 12nd respectively
The transmission line 1212 of transmission line 1201 to the 12nd, the transmission that first phase to the outs of phase such as the tenth two phase are provided respectively is special
Property.
In the present embodiment, the switch SW that load testing device 1 can be sequentially from the first switching switch element 1101 is carried out
Short circuit, the first transmission line 1201 of connection and load blocks 13 carry out the load testing of first phase, when the load of first phase
After the completion of test processes, then the load testing treatment of second phase is carried out, load testing device 1 then can be single by the first switching switch
The switch SW of unit 1101 carries out open circuit, and the switch SW of the second switching switch element 1102 is carried out into short circuit, connects the second transmission line
1202 and load blocks 13 carry out the load testing of second phase.At the same time, the switch of the first switching switch element 1101
SW can be connected to impedance R, can then be led off to earth terminal by impedance R in the remaining energy of the first transmission line 1201.According to above-mentioned
Step, load testing device 1 can sequentially carry out the load testing of first phase to the load testing of the tenth two phase.Due to
The time that one radio frequency handover module 11 is switched between different switching switch elements is extremely short, less than 1 second, therefore load
Time interval between the load testing of test device phase is less than or equal to 1 second.Therefore load testing device 1 can be greatly decreased
The stand-by period of load testing.
In the present embodiment, load blocks 13 are the resistance of 100 nurses difficult to understand, are to emulate voltage standing wave ratio (VSWR) 2：1
In the case of load testing.
(another embodiment of disclosure load testing device)
Refer to Fig. 4, shown in Fig. 4 for the embodiment of the present disclosure load testing device 3 and test system DUT it is another
Schematic diagram.
In the present embodiment, load testing device 3 includes that one first radio frequency handover module 31, a transport module 32, are negative
Carry the radio frequency handover module 34 of module 33 and 1 second.Wherein, the first radio frequency handover module 31 includes the first switching switch element
3101 to the 12nd switching switch elements 3112.Second radio frequency handover module 34 also include one first switching switch element 3401,
One second switching switch element 3402, one the 3rd switching switch element 3403, one the 4th switching switch element 3404, one the 5th cut
Change switch element 3405, one the 6th switching switch element 3406, one the 7th switching switch element 3407, one the 8th switching switch single
Unit 3408, one the 9th switches switch element 3409,1 the tenth switching switch element 3410,1 the 11st switching switch element 3411
And 1 the 12nd switching switch element 3412.Transport module 32 includes the transmission line 3212 of the first transmission line 3201 to the 12nd.
The other end connection test system DUT of the first radio frequency handover module 31 of load testing device 3.First radio frequency switches
One end of the first switching switching switch element 3112 of switch element 3101 to the 12nd of module 31 connects transport module 32 respectively
The transmission line 3212 of the first transmission line 3201 to the 12nd the other end.First transmission line 3201 to the 12nd of transport module 32
One end of transmission line 3212 connects the first switching switching of switch element 3401 to the 12nd of the second radio frequency handover module 34 respectively
The other end of switch element 3412.The first switching switching switch of switch element 3401 to the 12nd of the second radio frequency handover module 34
One end of unit 3412 then connects load blocks 33.It is, the first switching switch element of the first radio frequency handover module 31
3101st, the first switching switch element 3401 of the first transmission line 3201 of transport module 32 and the second radio frequency handover module 34 is total to
With the load testing treatment for providing a first phase.It is contemplated that the first radio frequency handover module 31 and the second radio frequency switching mould
The transmission characteristic of block 34, therefore, the length of the transmission line 3212 of the first transmission line 3201 to the 12nd in the present embodiment can divide
The length of the transmission line 1212 of the first transmission line 1201 to the 12nd that Lve Duanyu be in as described before embodiment.
In the present embodiment, the first switching switching switch of switch element 3101 to the 12nd of the first radio frequency handover module 31
The first switching switching switch element 3412 of switch element 3401 to the 12nd of the radio frequency handover module 34 of unit 3112 and second
Structure is similar to, the first switching switching radio frequency handover module 34 of switch element 3112 and second of switch element 3101 to the 12nd
The first switching switching of switch element 3401 to the 12nd switch element 3412 includes an a switch SW and impedance R respectively.At this
In embodiment, impedance R is the resistance of 50 nurses difficult to understand, and the impedance value of impedance R can according to the actual requirements be selected, do not made in the disclosure
Limitation.In the present embodiment, load blocks 33 only include a load.In other embodiments, load blocks 33 can include
The identical or different load of multiple impedance operators, is not restricted in the disclosure.
In the present embodiment, the switch SW that load testing device 3 can be sequentially from the first switching switch element 3101 is carried out
Short circuit, the switch SW of the first switching switch element 3401 of the second radio frequency handover module 34 can also carry out short circuit, so that first penetrates
First switching switch element 3101 of frequency handover module 31 connects the first transmission line 3201, the first of the second radio frequency handover module 34
Switching switch element 3401 and load blocks 33, to carry out the load testing of first phase, when the load testing of first phase
After the completion for the treatment of, then the load testing treatment of second phase is carried out, load testing device 1 then can be by the first radio frequency handover module 31
The switch SW of the first switching switch element 3101 and the first of the second radio frequency handover module 34 switch switch element 3401
Switch SW carries out open circuit respectively, and the switch SW of the second switching switching switch element 3402 of switch element 3102, second is entered respectively
Row short circuit, the load testing of second phase is carried out to connect the second transmission line 3202 and load blocks 33.At the same time, first
The impedance R that the switch SW of the switching switching switch element 3401 of switch element 3101, first can be each connected to respectively, passes first
The remaining energy of defeated line 3201 can then switch the impedance R of switch element 3401 by the first switching switch element 3101 and first
Lead off to earth terminal.According to above-mentioned steps, load testing device 3 can sequentially carry out the load testing of first phase to the 12nd
The load testing of phase.Because the time interval between the load testing of out of phase is less than or equal to 1 second.Therefore load testing is filled
Putting 1 can be greatly decreased the stand-by period of load testing.
Therefore test system DUT can carry out the load testing of out of phase by load testing device 1.
In the present embodiment, first phase, second phase, third phase, the 4th phase, the 5th phase, the 6th phase,
Seven phases, eight-phase, the 9th phase, the tenth phase, the 11st phase and the tenth two phase be respectively 30 degree, 60 degree, 90
Degree, 120 degree, 150 degree, 180 degree, 210 degree, 240 degree, 270 degree, 300 degree, 330 degree and 360 degree.Namely the present embodiment
Load testing device 3 switches switch element by the first switching switch element 3101 to the 12nd of the first radio frequency handover module 31
3112, and transport module 32 the transmission line 3212 of the first transmission line 3201 to the 12nd, and the second radio frequency handover module 34
The first switching switching switch element 3412 of switch element 3401 to the 12nd with 30 degree of phase difference, one signal period of segmentation
Out of phase, to provide the load characteristic of out of phase.Therefore test system DUT can be carried out by load testing device 3
The load testing of out of phase.
In the present embodiment, the length for being shorter in length than the second transmission line 3202 of the first transmission line 3201.Second transmission line
3202 length for being shorter in length than the 3rd transmission line 3203.The length for being shorter in length than the 4th transmission line 3204 of the 3rd transmission line 3203
Degree.The length for being shorter in length than the 5th transmission line 3205 of the 4th transmission line 3204.5th transmission line 3205 is shorter in length than the 6th
The length of transmission line 3206.The length for being shorter in length than the 7th transmission line 3207 of the 6th transmission line 3206.7th transmission line 3207
The length for being shorter in length than the 8th transmission line 3208.The length for being shorter in length than the 9th transmission line 3209 of the 8th transmission line 3208.
The length for being shorter in length than the tenth transmission line 3210 of the 9th transmission line 3209.Tenth transmission line 3210 is shorter in length than the 11st biography
The length of defeated line 3211.The length for being shorter in length than the 12nd transmission line 3212 of the 11st transmission line 3211.The length of transmission line
The change of signal phase is directly affected, however, in the present embodiment, while consider in the first radio frequency handover module 31 first cutting
Change first in the transmission characteristic and the second radio frequency handover module 34 of the switching switch element 3112 of switch element 3101 to the 12nd
Switching switch element 3401 to the 12nd switches the transmission characteristic of switch element 3412, for example：Resistive impedance, capacitive impedance
Or inductive impedance.Therefore, arrange in pairs or groups respectively the first radio frequency handover module 31 first switching switch element 3101 to the 12nd
The first of the transmission line 3212 of 3112 and first transmission line of switching switch element 3201 to the 12nd and the second radio frequency handover module 34
The switching switching switch element 3412 of switch element 3401 to the 12nd, provides first phase to the different phases such as the tenth two phase respectively
The transmission characteristic of position.
In the present embodiment, load blocks 33 are the resistance of 100 nurses difficult to understand, are to emulate voltage standing wave ratio (VSWR) 2：1
In the case of load testing.
(another embodiment of disclosure load testing device)
Refer to Fig. 5, shown in Fig. 5 for the embodiment of the present disclosure load testing device 5 and test system DUT it is another
Schematic diagram.
In the present embodiment, load testing device 5 includes that one first radio frequency handover module 51, a transport module 52, are negative
Carry module 53, one second radio frequency handover module 54 and one the 3rd radio frequency handover module 55.Wherein, the first radio frequency handover module 51
Including the first switching switching switch element 5112 of switch element 5101 to the 12nd.Transport module 52 includes the first transmission line 5201
To the 12nd transmission line 5212.Load blocks 53 include the load 5303 of one first load, 5301, one second load 5302, the 3rd
And one the 4th load 5304.Second radio frequency handover module 54 includes the first switching switching switch of switch element 5401 to the 12nd
Unit 5412.3rd radio frequency handover module 55 include one first switching switch element 5501, one second switching switch element 5502,
One the 3rd switching switching switch element 5504 of switch element 5503 and the 4th.
The one of the first switching switching switch element 5112 of switch element 5101 to the 12nd of the first radio frequency handover module 51
End connects the other end of the transmission line 5212 of the first transmission line 5201 to the 12nd of transport module 52 respectively.The of transport module 52
One end of the transmission line 5212 of one transmission line 5201 to the 12nd connects the first switching switch of the second radio frequency handover module 54 respectively
Unit 5401 to the 12nd switches the other end of switch element 5412.First switching switch element of the second radio frequency handover module 54
One end of 5401 to the 12nd switching switch elements 5412 then connects the other end of the 3rd radio frequency handover module 55.3rd radio frequency is cut
One end of the first switching switching switch element 5504 of switch element 5501 to the 4th of mold changing block 55 then connects load blocks respectively
53 load 5304 of the first load 5301 to the 4th.
In the present embodiment, load testing device 5 can sequentially from the first switching switch of the first radio frequency handover module 51
The switch SW of unit 5101 carries out short circuit, and the switch SW of the first switching switch element 5401 of the second radio frequency handover module 54 also can
Short circuit is carried out, so that the first switching switch element 5101 of the first radio frequency handover module 51 connects the first transmission line 5201, second
First switching switch element 5401 of radio frequency handover module 54.
In the present embodiment, the first switching switch element 5501 of the 3rd radio frequency handover module 55 can be first short-circuit negative to connect
The first load 5301 of module 53 is carried, so that load testing device 5 can carry out first in the case of the first load 5301
The load testing of phase, after the completion of the load testing treatment that first phase in the case of 5301 is loaded first, in this implementation
In example, then proceed the load testing treatment of the second phase in the case of the first load 5301.Load testing device 5 is then
Switch element 5101 can be switched by the first of the first radio frequency handover module 51 switch SW and the second radio frequency handover module 54
The switch SW of the first switching switch element 5401 carries out open circuit respectively, by the second switching switching switch of switch element 5102, second
The switch SW of unit 5402 carries out short circuit respectively, to connect the first of the second transmission line 5202 and the 3rd radio frequency handover module 55
First load 5301 of switching switch element 5501 and load blocks 53, to carry out the in the case of the first load 5301
The load testing of two phase.
At the same time, the switch SW of the first switching switching switch element 5401 of switch element 5101, first can be connected respectively
To respective impedance R, then can be by the first switching switch element 5101 and first in the remaining energy of the first transmission line 5201
The impedance R for switching switch element 5401 is led off to earth terminal.According to above-mentioned steps, load testing device 1 can be carried out sequentially
First loads the load testing of the first phase in the case of 5301 to the load testing of the tenth two phase.Due to out of phase
Time interval between load testing is less than or equal to 1 second.Therefore load testing device 5 can be greatly decreased the wait of load testing
Time.
After the load testing of each phase in the case of completing the first load 5301, first, in the present embodiment, load
The 3rd radio frequency handover module 55 of test device 5 first can open a way the first switching switch element 5501, and the second switching switch is single
The short circuit of unit 5502, is connected to the second load 5302, is ready for each phase load test processes in the case of being loaded second.
Therefore, load testing device 5 sequentially can switch switch element 5101 to the 12nd from the first of the first radio frequency handover module 51
Switch the switch SW of switch element 5112 and the first switching switch element 5401 to the 12nd of the second radio frequency handover module 54
Switching switch element 5412 is sequentially short-circuit, open circuit, and first transmission line 5201 to the 12nd of connection transport module 52 in proper order is passed
Defeated line 5212, to carry out the load testing of each phase in the case of the second load 5302.Complete the feelings of the second load 5302
After the load testing of each phase under condition, the 3rd switching switch of the then short-circuit 3rd radio frequency handover module 55 of load testing device 5
Unit 5503, and sequentially from the first switching switching switch list of switch element 5101 to the 12nd of the first radio frequency handover module 51
The switch SW of unit 5112 and the first switching switching switch of switch element 5401 to the 12nd of the second radio frequency handover module 54 are single
Unit 5412 is sequentially short-circuit, open circuit, and the transmission line 5212 of the first transmission line 5201 to the 12nd for connecting transport module 52 in proper order,
The load testing of each phase in the case of to carry out the 3rd load 5303 and the 4th load 5304.
In other embodiments, load blocks 53 can in proper order be carried out when the load testing for testing first phase is processed
The test processes of the first load 5301 to 5302.Load testing treatment in the case of the different loads of complete first phase to be tested
Afterwards, then carry out other phases load testing treatment.
In the present embodiment, first phase, second phase, third phase, the 4th phase, the 5th phase, the 6th phase,
Seven phases, eight-phase, the 9th phase, the tenth phase, the 11st phase and the tenth two phase be respectively 30 degree, 60 degree, 90
Degree, 120 degree, 150 degree, 180 degree, 210 degree, 240 degree, 270 degree, 300 degree, 330 degree and 360 degree.Namely the present embodiment
Load testing device 5 switches switch element by the first switching switch element 5101 to the 12nd of the first radio frequency handover module 51
5112, and transport module 52 the transmission line 5212 of the first transmission line 5201 to the 12nd, and the second radio frequency handover module 54
The first switching switching switch element 5412 of switch element 5401 to the 12nd with 30 degree of phase difference, one signal period of segmentation
Out of phase, to provide the load characteristic of out of phase.Therefore test system DUT can be carried out by load testing device 5
The load testing of out of phase.
In the present embodiment, the length for being shorter in length than the second transmission line 5202 of the first transmission line 5201.Second transmission line
5202 length for being shorter in length than the 3rd transmission line 5203.The length for being shorter in length than the 4th transmission line 5204 of the 3rd transmission line 5203
Degree.The length for being shorter in length than the 5th transmission line 5205 of the 4th transmission line 5204.5th transmission line 5205 is shorter in length than the 6th
The length of transmission line 5206.The length for being shorter in length than the 7th transmission line 5207 of the 6th transmission line 5206.7th transmission line 5207
The length for being shorter in length than the 8th transmission line 5208.The length for being shorter in length than the 9th transmission line 5209 of the 8th transmission line 5208.
The length for being shorter in length than the tenth transmission line 5210 of the 9th transmission line 5209.Tenth transmission line 5210 is shorter in length than the 11st biography
The length of defeated line 5211.The length for being shorter in length than the 12nd transmission line 5212 of the 11st transmission line 5211.The length of transmission line
The change of signal phase is directly affected, however, in the present embodiment, while consider in the first radio frequency handover module 51 first cutting
Change the first switching in transmission characteristic, the second radio frequency handover module 54 of the switching switch element 5112 of switch element 5101 to the 12nd
Switch element 5401 to the 12nd switches the transmission characteristic of switch element 5412, and first is cut in the 3rd radio frequency handover module 55
The transmission characteristic that switch element 5501 to the 4th switches switch element 5504 is changed, for example：Resistive impedance, capacitive impedance or
Inductive impedance.Therefore, arrange in pairs or groups respectively the first radio frequency handover module 51 first switching the switching of switch element 5101 to the 12nd
Switch element 5112, the transmission line 5212 of the first transmission line 5201 to the 12nd, the first switching of the second radio frequency handover module 54 are opened
Close unit 5401 to the 12nd switching switch element 5412, and the 3rd radio frequency handover module 55 first switching switch element
5501 to the 4th switching switch elements 5504, provide the transmission characteristic of first phase to the outs of phase such as the tenth two phase respectively.
Therefore, the first switching switch element 5101, first transmission line of transport module 52 of the first radio frequency handover module 51
5201st, the first switching of the first switching radio frequency handover module 55 of switch element 5401 and the 3rd of the second radio frequency handover module 54
Switch element 5501 provides the load testing treatment of a first phase jointly.And because load blocks 53 include four loads,
Therefore the first phase load testing of different loading conditions can be provided.In the present embodiment, the first load 5301 is 60 difficult to understand
The resistance of nurse is emulation voltage standing wave ratio (VSWR) 1.2：Load testing in the case of 1.Second load 5302 is 75 nurses difficult to understand
Resistance, be emulation voltage standing wave ratio (VSWR) 1.5：Load testing in the case of 1.3rd load 5303 is 100 nurses difficult to understand
Resistance, be emulation voltage standing wave ratio (VSWR) 2：Load testing in the case of 1.4th load 5404 is 150 nurses difficult to understand
Resistance is then emulation voltage standing wave ratio (VSWR) 3：Load testing in the case of 1.
In the present embodiment, switched by the first switching switch element 5501 to the 4th of the 3rd radio frequency handover module 55 and opened
The switch SW of unit 5504 is closed, any load of load blocks 53 can be switched to, to carry out the test of different loads value.Its
In, the first switching switching of switch element 5501 to the 4th switch element 5504 of the 3rd radio frequency handover module 55, the second radio frequency are cut
The first switching switching radio frequency handover module 51 of switch element 5412 and first of switch element 5401 to the 12nd of mold changing block 54
The structure of the first switching switching switch element 5112 of switch element 5101 to the 12nd is similar to, respectively including a switch SW and
Impedance R.In the present embodiment, impedance R is the resistance of 50 nurses difficult to understand, and the impedance value of impedance R can be selected according to the actual requirements,
The disclosure is not restricted.
(embodiment of the load test approach of the disclosure)
Refer to Fig. 6 and shown in Fig. 7, Fig. 6 for the embodiment of the present disclosure a kind of load test approach flow chart.Figure
Shown in 7 for the embodiment of the present disclosure load test approach another flow chart.
The embodiment of the present disclosure additionally provides a kind of load test approach, and load test approach in the present embodiment is applicable
Load testing device 1,3,5 in above-listed each embodiment etc..Therefore, the multiple switching switch included by radio frequency handover module
It will not go into details for the structure and function of the multiple transmission line and load blocks included by unit, transport module, load testing
Method comprises the following steps：At least one first switching switch element in the multiple switching switch element is switched over, with
Test system is set to carry out one to load blocks by one first transmission line of the first switching switch element and the multiple transmission line
First load testing processes (step S100)；After completing the treatment of the first load testing, a scheduled time is spaced, is cut to the multiple
At least one second switching switch element changed in switch element is switched over, so that test system is by the second switching switch element
And one second transmission line of the multiple transmission line carries out one second load testing treatment (step S110) to load blocks；And
Carry out processing (step S120) to the load testing of a predetermined phase quantity of load blocks in proper order.
In the step s 120, also comprise the following steps：Respectively for load blocks first load and second load into
Load testing treatment (step S130) of row predetermined phase quantity.Step S130 is according to included by load blocks in step S120
Load number and carry out respectively predetermined phase quantity load testing treatment.In the present embodiment, it is with load testing device 1
Example, load testing device 1 includes one first radio frequency handover module 11, a transport module 12 and a load blocks 13.First penetrates
Frequency handover module 11 includes the one first switching switching switch element 1112 of switch element 1101 to the 12nd, and the multiple switching is opened
The structure for closing unit is similar to, including an a switch SW and impedance R.Transport module 12 includes one first transmission line 1201 to the
12 transmission lines 1212.Load blocks 13 include at least one load, it is, load blocks can include more than one bearing
Carry, in other embodiments, load blocks 13 can include 4 loads.In the present embodiment, predetermined phase quantity corresponds to the
The switching switch element quantity and the transmission line quantity of transport module 12 of one radio frequency handover module 11, that is, in the present embodiment
In, predetermined phase quantity is 12.
According to the structure setting of load testing device 1, in the present embodiment, test system can be according to load testing device
The first switching switching of switch element 1101 to the 12nd switch element 1112 of 1 the first radio frequency handover module 1101, transmission mould
Load blocks 13 are carried out the load in load blocks 13 by the transmission line 1212 of the first transmission line 1201 to the 12nd of block 12 in proper order
In the case of first phase to the tenth two phase load testing process.In the present embodiment, in the present embodiment, the first phase
Position, second phase, third phase, the 4th phase, the 5th phase, the 6th phase, the 7th phase, eight-phase, the 9th phase,
Ten phases, the 11st phase and the tenth two phase be respectively 30 degree, 60 degree, 90 degree, 120 degree, 150 degree, 180 degree, 210 degree,
240 degree, 270 degree, 300 degree, 330 degree and 360 degree.Namely the load testing device 1 of the present embodiment is cut by the first radio frequency
Mold changing block 11 first switching switch element 1101 to the 12nd switching switch element 1112, and transport module 12 first biography
The transmission line 1212 of defeated line 1201 to the 12nd, with 30 degree of phase difference, splits the out of phase of signal period, to provide not
The load characteristic of same-phase.Therefore test system DUT can carry out the load testing of out of phase by load testing device 1.
If by taking load testing device 3 as an example, load testing device 3 includes that one first radio frequency handover module 31, transmits mould
Block 32, one second radio frequency handover module 34 and a load blocks 33.First radio frequency handover module 31 includes that one first switching is opened
The switching switch element 3112 of unit 3101 to the 12nd is closed, the second radio frequency handover module 34 includes one first switching switch element
3401 to the 12nd switching switch elements 3412.It is the multiple switching switch element structure be similar to, including one switch SW with
And an impedance R.Transport module 32 includes the transmission line 3212 of one first transmission line 3201 to the 12nd.Load blocks 33 are included at least
One load, it is, load blocks can include more than one load, in other embodiments, load blocks 33 can be with
Including 4 loads.In the present embodiment, the second predetermined quantity corresponds to the switching switch element number of the first radio frequency handover module 31
The transmission line quantity of amount and transport module 32, that is, in the present embodiment, predetermined phase quantity is 12.
According to the structure setting of load testing device 3, in the present embodiment, test system DUT can be according to load testing
The first switching switching of switch element 3101 to the 12nd switch element 3112 of the first radio frequency handover module 3101 of device 3, biography
The transmission line 3212 of first transmission line 3201 to the 12nd of defeated module 32, and the first switching of the second radio frequency handover module 34 is opened
Close unit 3401 to the 12nd switching switch element 3412, load blocks 33 are carried out in proper order load blocks 33 one load
In the case of first phase to the tenth two phase load testing process.In the present embodiment, first phase, second phase,
Three phases, the 4th phase, the 5th phase, the 6th phase, the 7th phase, eight-phase, the 9th phase, the tenth phase, the 11st
Phase and the tenth two phase be respectively 30 degree, 60 degree, 90 degree, 120 degree, 150 degree, 180 degree, 210 degree, 240 degree, 270 degree,
300 degree, 330 degree and 360 degree.Namely the load testing device 3 of the present embodiment pass through the first radio frequency handover module 31 the
The one switching switching of switch element 3101 to the 12nd switch element 3112, the first transmission line 3201 to the 12nd of transport module 32
The first switching switching switch element of switch element 3401 to the 12nd of the radio frequency handover module 34 of transmission line 3212 and second
3412, with 30 degree of phase difference, split the out of phase of signal period, to provide the load characteristic of out of phase.Therefore
Test system DUT can carry out the load testing of out of phase by load testing device 3.
If by taking load testing device 5 as an example, load testing device 5 includes that one first radio frequency handover module 51, transmits mould
Block 52, one second radio frequency handover module 54, one the 3rd radio frequency handover module 55 and a load blocks 53.First radio frequency switches mould
Block 51 includes the first switching switching switch element 5112 of switch element 5101 to the 12nd, and the second radio frequency handover module 54 includes the
The one switching switching switch element 5412 of switch element 5401 to the 12nd.The structure of the multiple switching switch element is similar to,
Including an a switch SW and impedance R.Transport module 52 includes the transmission line 5212 of one first transmission line 5201 to the 12nd.3rd
Radio frequency handover module 55 includes the first switching switching switch element 5504 of switch element 5501 to the 4th.Load blocks 53 include four
Individual load.In the present embodiment, predetermined phase quantity corresponds to the switching switch element quantity of the first radio frequency handover module 51, the
The switching switch element quantity and the transmission line quantity of transport module 52 of two radio frequency handover modules 54, it is, in this implementation
In example, predetermined phase quantity is 12.
According to the structure setting of load testing device 5, in the present embodiment, test system DUT can be according to load testing
The first switching switching of switch element 5101 to the 12nd switch element 5112 of the first radio frequency handover module 5101 of device 5, biography
The transmission line 5212 of first transmission line 5201 to the 12nd of defeated module 52, and the first switching of the second radio frequency handover module 54 is opened
The switching switch element 5412 of unit 5401 to the 12nd is closed, the load 5304 of the first load 5301 to the 4th to load blocks 53,
Carry out respectively in the load 5303 of first the 5301, second load of load the 5302, the 3rd of load blocks 13 and the 4th load 5304
In the case of first phase to the tenth two phase load testing process.In the present embodiment, first phase, second phase,
Third phase, the 4th phase, the 5th phase, the 6th phase, the 7th phase, eight-phase, the 9th phase, the tenth phase, the tenth
One phase and the tenth two phase be respectively 30 degree, 60 degree, 90 degree, 120 degree, 150 degree, 180 degree, 210 degree, 240 degree, 270 degree,
300 degree, 330 degree and 360 degree.Namely the load testing device 5 of the present embodiment pass through the first radio frequency handover module 51 the
The one switching switching of switch element 5101 to the 12nd switch element 5112, the first transmission line 5201 to the 12nd of transport module 52
Transmission line 5212, the second radio frequency handover module 54 first switching switch element 5401 to the 12nd switching switch element 5412 with
And the 3rd radio frequency handover module 55 first switching switch element 5501 to the 4th switching switch element 5504, with 30 degree of phase
Difference, splits the out of phase of signal period, to provide the load characteristic of out of phase.Therefore test system DUT can lead to
Overload test device 5 carries out the load testing of out of phase.Therefore, load test approach in the present embodiment is applied to
Load testing device 1,3,5 of above-listed each embodiment etc..And, the load testing treatment and the load of second phase of first phase
Time interval between test processes is less than or equal to a scheduled time.In the present embodiment, the scheduled time is 1 second.Namely exist
The time interval of the load testing treatment between out of phase is less than or equal to a scheduled time (1 second).
(the possibility technique effect of embodiment)
In sum, the load testing device of the embodiment of the present disclosure, can effectively be reduced between out of phase test processes
Time interval, and then reduce the integrated testability time, not only accelerate testing efficiency, can also improve shipment test QC detection side
Formula, from part, examination at random is changed to full inspection, is effectively lifted out the efficiency of kinds of goods pipe, in addition, the load testing dress of the embodiment of the present disclosure
Put can effective reduces cost, more can largely manufacture and be arranged at producing line and quickly tested.
The foregoing is only embodiment of the disclosure, itself and be not used to limit to the disclosure claim.
Claims (17)
1. a kind of load testing device, wherein, the load testing device is electrically connected with a test system, it is characterised in that institute
Stating load testing device includes：
One first radio frequency handover module, including：
One first switching switch element；And
One second switching switch element；And
One transport module, including：
One first transmission line, connects the first switching switch element；And
One second transmission line, connects the second switching switch element, wherein the length of first transmission line and described second
The length of transmission line is unequal；And
One load blocks, including one first load and one second load, described first that the transport module is connected respectively pass
Defeated line and second transmission line；
Wherein, the test system switches switch element and first transmission line with to the load blocks by described first
It is described first load carry out one first load testing treatment, the test system by described second switching switch element and institute
State the second transmission line carries out the treatment of one second load testing, first load with second load to the load blocks
Time interval between test processes and second load testing treatment is less than or equal to a scheduled time.
2. load testing device as claimed in claim 1, it is characterised in that
First load testing is processed as the first switching switch element and provides one first jointly with first transmission line
The transmission characteristic of phase,
Second load testing is processed as the second switching switch element and provides one second jointly with second transmission line
The transmission characteristic of phase, the first phase is not equal to the second phase.
3. load testing device as claimed in claim 1, it is characterised in that the scheduled time is 1 second.
4. load testing device as claimed in claim 1, it is characterised in that the first switching switch element and described the
Two switching switch elements include a switch and an impedance respectively.
5. load testing device as claimed in claim 1, it is characterised in that first load of the load blocks and institute
The impedance operator for stating the second load is identical.
6. load testing device as claimed in claim 1, it is characterised in that first load of the load blocks and institute
The impedance operator of the second load is stated to differ.
7. load testing device as claimed in claim 6, it is characterised in that also including one second radio frequency handover module, connection
Between the transport module and the load blocks, wherein, the first radio frequency handover module, second radio frequency switching mould
Block and the transport module provide the transmission characteristic of out of phase jointly.
8. load testing device as claimed in claim 7, it is characterised in that be also connected to including one the 3rd radio frequency handover module
Between the second radio frequency handover module and the load blocks, the first radio frequency handover module, second radio frequency switching
Module, the 3rd radio frequency handover module and the transport module provide the transmission characteristic of out of phase jointly.
9. a kind of load testing device, wherein, the load testing device connects a test system, it is characterised in that described negative
Carrying test device includes：
An at least radio frequency handover module, including multiple switching switch elements；And
One transport module, including multiple different lengths transmission line, the multiple switching switch element, and any two are connected respectively
The switching switch element of transmission line correspondence connection is different each other；And
One load blocks, connect the transport module；
Wherein, the test system passes through an at least radio frequency handover module, the transport module with to the load blocks
At least two load testing treatment are carried out, the time interval between at least two load testings treatment makes a reservation for less than or equal to one
Time.
10. load testing device as claimed in claim 9, it is characterised in that any two switching switch elements are each right with it
The transmission characteristic that transmission line provides out of phase respectively should be connected, the transmission characteristic of the multiple out of phase is differing from each other.
11. load testing devices as claimed in claim 9, it is characterised in that the scheduled time is 1 second.
A kind of 12. load test approach a, it is adaptable to load testing device, the load testing device is electrically connected with a dress to be measured
Put, the load testing device includes multiple switching switch elements, multiple transmission lines and a load blocks, it is characterised in that
The load test approach includes：
At least one first switching switch element in the multiple switching switch element is switched over, so that the test system
The load blocks are carried out with one the by one first transmission line of the described first switching switch element and the multiple transmission line
The treatment of one load testing；
After completing first load testing treatment, a scheduled time is spaced, in the multiple switching switch element the
Two switching switch elements are switched over, so that the test system is by the described second switching switch element and the multiple transmission
One second transmission line of line carries out the treatment of one second load testing to the load blocks；And
The load testing treatment to a predetermined phase quantity of the load blocks is carried out in proper order；
Wherein, the length of first transmission line is unequal with the length of second transmission line.
13. load test approach as claimed in claim 12, it is characterised in that the scheduled time is less than or equal to 1 second.
14. load test approach as claimed in claim 12, it is characterised in that also include：
One first load and one second load for the load blocks respectively carries out the load of the predetermined phase quantity
Test processes.
A kind of 15. load testing devices, wherein, the load testing device is electrically connected with a test system, it is characterised in that institute
Stating load testing device includes：
One first radio frequency handover module, including：
One first switching switch element；And
One second switching switch element；
One transport module, including：
One first transmission line, connects the first switching switch element；And
One second transmission line, connects the second switching switch element, wherein the length of first transmission line and described second
The length of transmission line is unequal；
One second radio frequency handover module, is connected between the transport module and the load blocks；And
One load blocks, first transmission line and the institute of the transport module are connected by the second radio frequency handover module
State the second transmission line；
Wherein, the test system is cut by the described first switching switch element, first transmission line and second radio frequency
Mold changing block is processed with carrying out one first load testing to the load blocks, and the test system is by the described second switching switch
Unit, second transmission line and the second radio frequency handover module are carried out at one second load testing with to the load blocks
Reason, the time interval between the first load testing treatment and second load testing treatment is less than or equal to a pre- timing
Between.
16. load testing devices as claimed in claim 15, it is characterised in that the scheduled time is less than or equal to 1 second.
17. load testing devices as claimed in claim 15, it is characterised in that the first radio frequency handover module, described
Two radio frequency handover modules and the transport module provide the transmission characteristic of out of phase jointly.
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