CN102055533A - Test system - Google Patents
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- CN102055533A CN102055533A CN2009102110861A CN200910211086A CN102055533A CN 102055533 A CN102055533 A CN 102055533A CN 2009102110861 A CN2009102110861 A CN 2009102110861A CN 200910211086 A CN200910211086 A CN 200910211086A CN 102055533 A CN102055533 A CN 102055533A
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Abstract
The invention provides a test system. The test system comprises a signal generator, a signal distributor, a micro control unit, a first transmission interface, a second transmission interface and a first signal adjusting unit, wherein the signal generator is used for generating input signals; the signal distributor is used for distributing the input signals into first shunt signals and second shunt signals; the micro control unit is used for generating first control signals and second control signals; the first transmission interface is used for transmitting the first shunt signals and the first control signals; the second transmission interface is used for transmitting the second shunt signals and the second control signals; and the first signal adjusting unit is used for converting the first shunt signals into first test signals according to the first control signals to output for test.
Description
Technical field
The present invention relates to a kind of test macro, particularly relate to a kind of test macro that the test signal of a plurality of different signal strengths can be provided simultaneously.
Background technology
Quality in order to ensure electronic product, the goods producer is in manufacturing process or after finishing manufacturing, can carry out various basic function tests to each electronic product, verify whether its function can go on well and conform with the QC requirement, whether be supplied to the consumer to use with decision.For instance, for the telecommunications product, as satellite broadcast receiver, device for mobile communication, Wireless Communication Equipment etc., the signal receiving function promptly is one of common test event.In general, in order to use the variation of going up in response to reality, make the telecommunications product may receive the signal of various different signal strengths because of various environment or signal transmission.Therefore, when carrying out product test, can provide to the telecommunications product by the test signal that testing apparatus produces different signal strengths, and then judge whether the telecommunications product can normally receive the processing related signal.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of an existing test macro 10.Test macro 10 includes a signal generator 102, an attenuator 104.As shown in Figure 1, test macro 10 produces a radio-frequency (RF) signal S by signal generator 102, and attenuator 104 becomes a test signal ST with radio-frequency (RF) signal S attenuation processing, to provide to telecommunications product 106 to be measured.
Yet same time built-in test system 10 only can provide the test signal to test to single telecommunications product, for present mass-produced business model, can't produce efficient test in practical application.On the other hand, can test a plurality of products simultaneously, must use a plurality of signal generators that the test signal is provided in order to reach.Yet, because signal generator is very expensive, if use a plurality of signal generators will cause great cost burden.In addition, in test process,, must adjust the output signal intensity of signal generator repeatedly, thus, will very easily consume the life-span of signal generator for the test signal of various signal strengths is provided.Therefore, along with cost pressure is increasing, how the trend that the production cycle but shortens day by day provides one to have cost-benefit test macro, and it still is one of subject under discussion of needing badly at present improvement that test telecommunications product is provided.
Summary of the invention
Therefore, the present invention mainly is to provide a kind of test macro.
The present invention discloses a kind of test macro, and this test macro includes a signal generator, is used for producing an input signal; One signal distributor is distributed into one first shunting signal and one second shunting signal with input signal; One micro-control unit is used for producing one first controlling signal and one second controlling signal; One first coffret is in order to transmit this first shunting signal and this first controlling signal; One second coffret is in order to transmit this second shunting signal and this second controlling signal; And one first signal adjustment unit, according to this first controlling signal, convert this first shunting signal to one first test signal, provide test with output.
Description of drawings
Fig. 1 is the schematic diagram of an existing test macro.
Fig. 2 is the schematic diagram of the embodiment of the invention one test macro.
Fig. 3 is an embodiment schematic diagram of the signal adjustment unit of the embodiment of the invention.
The reference numeral explanation
10,20 test macros
102,202 signal generators
104,304 attenuators
106 telecommunications products
204 signal distributors
206 micro-control units
208 main control units
210, INT_1～INT_m coffret
212 printed circuit board (PCB)s
302 signal control units
BOX_1～BOX_n signal attenuation module
DUT1～DUTm testing component
The PI input port
The PO output port
RF_1～RF_m signal adjustment unit
The S radio-frequency (RF) signal
The SAC controlling signal that decays
The SI input signal
SC1～SCm controlling signal
SO1～SOm shunts signal
ST, ST1～STm tests signal
Embodiment
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the embodiment of the invention one test macro 20.Test macro 20 is used for providing simultaneously test signal ST1～STm, and the signal strength of test signal ST1～STm can the elasticity adjustment according to demand, and (Device Under Test DUT) tests so that single or multiple assembly to be tested to be provided.Test macro 20 includes a signal generator 202, a signal distributor 204, a micro-control unit 206, a main control unit 208, coffret 210 and INT_1～INT_m, a printed circuit board (PCB) 212 and signal adjustment unit RF_1～RF_m.Signal generator 202 is used for producing an input signal SI.Signal distributor 204 is coupled to signal generator 202, is used for input signal SI is distributed into shunting signal SO1～SOm.Micro-control unit 206 is used for producing controlling signal SC1～SCm.Coffret INT_1～INT_m is coupled to micro-control unit 206 and signal distributor 204, and the shunting signal and the controlling signal that are used for respectively being imported are sent to corresponding signal adjustment unit.Signal adjustment unit RF_1～RF_m is respectively coupled to coffret INT_1～INT_m, be used for according to controlling signal SC1～SCm, SO1～SOm converts the test signal ST1～STm that meets required signal strength to the shunting signal, to provide to testing component DUT1～DUTm.
In simple terms, test macro 20 is according to the present required signal strength size of each testing component, produce corresponding controlling signal SC1～SCm by micro-control unit 206, make signal adjustment unit RF_1～RF_m will shunt test signal ST1～STm that signal SO1～SOm attenuation processing becomes required signal strength according to this, thus, can provide the testing component of the different signal strength demands of a plurality of tools to test simultaneously.
Therefore, the present invention can provide stable input signal SI by single signal generator 202, and the signal adjustment unit RF_1～RF_m by micro-control unit 206 control rear ends comes elasticity to adjust signal strength again.Therefore, the present invention does not need to adjust repeatedly the output intensity of signal generator 202, only needs to control the test signal that can provide multichannel to meet desirable strength by micro-control unit 206 suitable settings.
Further specify, in test macro 20, signal generator 202 provides input signal SI, is distributed into shunting signal SO1～SOm via signal distributor 204 again, and the independent signal output of multichannel is provided.In the case, the function of micro-control unit 206 is that just properly suitable test signal is changed out in controlling signal adjustment unit RF_1～RF_m adjustment.Therefore, in order to realize the signal strength control of each signal adjustment unit, as shown in Figure 2, main control unit 208 can be linked to micro-control unit 206 by coffret 210, and with it according to a signal strength that testing requirement produced instruction COM, offer micro-control unit 206, make micro-control unit 206 can produce corresponding controlling signal according to this.Thus, can accurately adjust according to testing requirement.Preferably, on practice, as shown in Figure 2, coffret 210, signal generation unit 202, signal distributor 204, micro-control unit 206 can be integrated with coffret INT_1～INT_m and be arranged on the printed circuit board (PCB) 212.Yet the present invention is not limited to this execution mode, and this only is the usefulness as the example explanation, is not to be restriction of the present invention.
Detailed description about signal adjustment unit RF_1～RF_m please refer to Fig. 3, and Fig. 3 is the embodiment schematic diagram of embodiment of the invention signal adjustment unit RF_1～RF_m.In Fig. 3, each signal adjustment unit includes one or more signal attenuation module, and for instance, signal adjustment unit RF_1 includes signal attenuation module BOX_1～BOX_5.Signal adjustment unit RF_2 includes signal attenuation module BOX_1～BOX_2.And each signal attenuation module can be used to signal is carried out attenuation processing.Be noted that when if each signal adjustment unit comprises more than one signal attenuation module, can the polyphone form connect between each signal attenuation module.Thus, the output signal that each signal adjustment unit can be received with it, carry out attenuation processing by the signal attenuation module of serial connection after, and produce the test signal of corresponding signal strength.As shown in Figure 3, each signal attenuation module includes an input port PI, a signal control unit 302, an attenuator 304 and an output port PO.Input port PI is coupled to the output port of corresponding coffret or previous stage signal attenuation module, is used for receiving test signal and corresponding controlling signal that shunting signal that corresponding coffret exports or previous stage are exported.Signal control unit 302 is coupled to input port PI, is used for according to corresponding controlling signal, produces a decay controlling signal SAC, and corresponding controlling signal is sent to output port PO.Attenuator 304 is coupled to input port PI and signal control unit 302, is used for according to decay controlling signal SAC, and the test signal that corresponding shunting signal or previous stage are exported carries out attenuation processing, to produce corresponding test signal.And test signal that is produced via output port PO output pad 304 and the controlling signal that is received by input port PI.In other words, signal attenuation module in each signal adjustment unit forefront can receive the shunting signal by corresponding coffret, and via the attenuation processing of signal attenuation module at different levels, adjust to behind the required test signal with signal strength, be sent to testing component by the output port of the signal attenuation module of last level with original shunting signal that is received.
In addition, in test macro 20, the quantity of the signal attenuation module that is included in each signal adjustment unit is the difference of the signal attenuation ability of situation and each signal attenuation module on demand, but and elasticity increase and decrease.Certainly, in the present invention, be not only to limit to provide the test signal in each signal adjustment unit by the signal attenuation module of last level, also can be and by the signal attenuation module output test signal of any one-level wherein according to required signal strength.When existing signal attenuation module is not applied use, can increase and decrease the quantity of signal attenuation module at any time, realize the test signal of suitable signal strength.Thus, will make each signal adjustment unit have great expandability.
On the other hand, in embodiments of the present invention, the signal attenuation module in each signal adjustment unit is all the module of independence separately and tool signal attenuation.Preferably, each signal attenuation module can independently be arranged at respectively on the independent attenuator circuit plate, in the case, can avoid and may result in the electromagnetic interference phenomenon that is produced when signal conducts on the same circuit board because of all modules all are arranged at.In addition, also can be on the signal attenuation module, increase electromagnetic interference and cover shell, thus, contingent electromagnetic interference phenomenon drops to lowlyer in the time of can further the signal attenuation module operate, and can more efficiently carry out the signal attenuation processing.
Because present telecommunications product is such as diversification very such as satellite broadcast receiver, set-top box, device for mobile communication.Producing on the online Test Application, at the characteristic and the standard criterion of different product, consider the variation of environment in addition, must provide the test signal of various signal strength to test to testing component.To be that a satellite broadcast receiver is an example below, the function mode of test macro 20 will be described with testing component.In the case, suppose that each signal in the test macro 20 is respectively a radio-frequency (RF) signal, if signal generator 202 produces the satellite broadcasting signal (as the input signal SI among Fig. 3) of a 2.3GHz, via signal distributor 204 it is dispensed in each road signal adjustment unit, if first testing component DUT1 needs at this moment-the test signal ST1 of 10dB, and the signal strength of shunting signal SO1 is-during 0.1dB, then micro-control unit 206 can be controlled signal control unit 302 among signal attenuation module BOX_1～BOX_5 by controlling signal SC1, makes signal control unit 302 in each signal attenuation module can control its corresponding attenuator 304 according to this and carries out attenuation processing and provide-the test signal ST1 of 10dB.Test macro 20 is by the arrangement of micro-control unit 206, after the processing of feasible shunting signal SO1 via the attenuator 304 among signal attenuation module BOX_1～BOX_5, will be in the output port PO of signal attenuation module BOX_5 output intensity-the test signal ST1 of 10dB, to provide to testing component (satellite broadcast receiver) DUT1.Be noted that in the present invention, can make the final survey signal of exporting meet required getting final product by the running of flexibly arranging to distribute each attenuator 304 of micro-control unit 206.For instance, if the maximum attenuation ability of each attenuator 304 is 5dB, in the case, can not need to bear processing by the particular decay device entirely, but the attenuation processing degree of distributing each attenuator 304 to be born via micro-control unit 206, for example, after the shunting signal SO1 of-0.1dB handles via the attenuator 304 of signal attenuation module BOX_1, decay-the test signal ST1_1 of 3dB, the attenuator 304 that is resent to the signal attenuation module BOX_2 of next stage continues to do attenuation processing, and will test signal ST1_1 and decay-the test signal ST1_2 of 5dB, in this way, handle via signal attenuation module BOX_3～BOX_5 in regular turn, and produce-the test signal ST1_3 of 7dB, the test signal ST1_4 of-9dB, and the test signal ST1 of final output-10dB.In like manner, by that analogy, other testing component also can obtain the test signal of various different signal strengths, to verify the signal receiving ability of telecommunications product to be measured.
Be noted that test macro 20 shown in Figure 2 is embodiments of the invention, those skilled in the art can do different variations or modification according to this, and is not limited thereto.For instance, assembly DUT1～DUTm to be tested can be any electronic product that has reception or handle the input signal ability, and attenuator 304 can be the attenuator of any kind, as long as can correctly reduce the amplitude size of signal.In addition, each attenuator 304 in test macro 20 can have different signal attenuation abilities, as long as can produce the test signal that meets demand in each signal adjustment unit.On the other hand, main control unit 208 can be the device of any tool computer system, coffret 210 then cooperates main control unit 208, as long as the data of main control unit 208 can be sent to the data transmission interface of micro-control unit, for example a RS232 coffret or other sequence or serial type coffret.
In sum, the present invention utilizes the control of signal strength of micro-control unit 206 and the mechanism with height expandability signal adjustment unit, and can flexibly adjust the test signal of required signal strength.The more important thing is, because in the prior art,, must use many groups test macro 10 as shown in Figure 1, thereby cause prior art must expend considerable cost, just can reach in a large number effect fast if will test a plurality of testing components simultaneously.In comparison, test macro 20 of the present invention, can be under the situation of using single signal generator, the test signal path of multichannel is provided simultaneously, and can provide the test signal of varying strength at demand, thereby the present invention not only can effectively promote production test efficient, and can significantly reduce the burden of production cost.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. test macro includes:
One signal generator is in order to produce an input signal;
One signal distributor is distributed into one first shunting signal and one second shunting signal with this input signal;
One micro-control unit is in order to produce one first controlling signal and one second controlling signal;
One first coffret is in order to transmit this first shunting signal and this first controlling signal;
One second coffret is in order to transmit this second shunting signal and this second controlling signal; And
One first signal adjustment unit according to this first controlling signal, converts this first shunting signal to one first test signal, provides test with output.
2. test macro as claimed in claim 1, this first signal adjustment unit wherein includes:
One first order signal attenuation module.
3. test macro as claimed in claim 2, this first order signal attenuation module wherein includes:
One signal control unit according to this first controlling signal, produces a decay controlling signal; And
One attenuator according to this decay controlling signal, is adjusted this first shunting signal, to produce this first test signal.
4. test macro as claimed in claim 2, wherein this first order signal attenuation module also includes:
One electromagnetic interference is covered shell, the electromagnetic interference that is produced when being used for reducing this first order signal attenuation module running.
5. test macro as claimed in claim 2, wherein this first signal adjustment unit also includes:
One second level signal attenuation module, and this first order signal attenuation module is connected with this second level signal attenuation module.
6. test macro as claimed in claim 1 wherein also comprises:
One second signal adjustment unit according to this second controlling signal, converts this second shunting signal to one second test signal, provides test with output.
7. test macro as claimed in claim 1, it also includes:
One the 3rd coffret is coupled to this micro-control unit, is used to provide transfer of data; And
One main control unit is coupled to the 3rd coffret, is used for producing signal strength instruction, to provide to this micro-control unit via the 3rd coffret, makes this micro-control unit produce this first controlling signal and this second controlling signal according to this.
8. test macro as claimed in claim 7, wherein the 3rd coffret, this signal generation unit, this signal distributor, this micro-control unit, first coffret and this second coffret are to integrate to be arranged on the circuit board.
9. test macro as claimed in claim 1, wherein this input signal and this first test signal are to belong to radio-frequency (RF) signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102110861A CN102055533A (en) | 2009-11-11 | 2009-11-11 | Test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102110861A CN102055533A (en) | 2009-11-11 | 2009-11-11 | Test system |
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| CN102055533A true CN102055533A (en) | 2011-05-11 |
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| CN2009102110861A Pending CN102055533A (en) | 2009-11-11 | 2009-11-11 | Test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103365735A (en) * | 2012-04-09 | 2013-10-23 | 纬创资通股份有限公司 | Transmission interface and method for determining transmission signal |
| CN106842244A (en) * | 2016-12-29 | 2017-06-13 | 北京时代民芯科技有限公司 | A kind of test system based on space application type satellite navigation receiver |
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| US6959126B1 (en) * | 2002-02-08 | 2005-10-25 | Calient Networks | Multipurpose testing system for optical cross connect devices |
| CN1980087A (en) * | 2005-12-08 | 2007-06-13 | 智邦科技股份有限公司 | Channel emulating device and method |
| CN101420634A (en) * | 2007-10-23 | 2009-04-29 | 华硕电脑股份有限公司 | Automatic test system and method for switching module and routing |
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Patent Citations (6)
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| US6405147B1 (en) * | 1999-09-10 | 2002-06-11 | Condor Systems, Inc. | Signal transfer device measurement system and method |
| US6694070B2 (en) * | 2001-06-13 | 2004-02-17 | Lucent Technologies Inc | Apparatus and method for training high density optical cross connects |
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| CN1980087A (en) * | 2005-12-08 | 2007-06-13 | 智邦科技股份有限公司 | Channel emulating device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103365735A (en) * | 2012-04-09 | 2013-10-23 | 纬创资通股份有限公司 | Transmission interface and method for determining transmission signal |
| CN106842244A (en) * | 2016-12-29 | 2017-06-13 | 北京时代民芯科技有限公司 | A kind of test system based on space application type satellite navigation receiver |
| CN106842244B (en) * | 2016-12-29 | 2020-02-21 | 北京时代民芯科技有限公司 | Testing system based on space application type satellite navigation receiver |
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Application publication date: 20110511 |