CN108234040B - Multi-port automatic VSA-VSG isolation testing method - Google Patents
Multi-port automatic VSA-VSG isolation testing method Download PDFInfo
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- CN108234040B CN108234040B CN201810005945.0A CN201810005945A CN108234040B CN 108234040 B CN108234040 B CN 108234040B CN 201810005945 A CN201810005945 A CN 201810005945A CN 108234040 B CN108234040 B CN 108234040B
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- switch board
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
Abstract
The invention provides a multi-port automatic VSA-VSG isolation testing device which comprises a computer, a standard signal generator, a standard frequency spectrograph, a switch board and a tested instrument, wherein the computer is respectively connected with the standard signal generator and the standard frequency spectrograph, a transmitting interface of the switch board is connected with the standard signal generator, a receiving interface of the switch board is connected with the standard frequency spectrograph, a transmitting one-to-one chip and a receiving one-to-one chip are arranged on the switch board, a plurality of ports are arranged on the switch board, and the transmitting interface of the switch board is respectively connected with the plurality of ports on the switch board through the transmitting one-to-one chip. The invention also provides a multi-port automatic VSA-VSG isolation testing method. The invention has the beneficial effects that: the multi-port automatic VSA-VSG isolation degree test is realized, and the test efficiency is high.
Description
Technical Field
The invention relates to a VSA-VSG isolation testing method, in particular to a multi-port automatic VSA-VSG isolation testing device and method.
Background
Usually, when a WLAN integrated tester is produced, a VSA-VSG isolation test is performed, and the conventional manual mode of the test is to perform manual software-based operation control on different RF ports and manually perform the operation of detaching or attaching SMA connectors to meet different user scene operations, which has the disadvantages of complicated test, low efficiency, excessive human resource investment, and the like.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a multi-port automatic VSA-VSG isolation testing device and method.
The invention provides a multi-port automatic VSA-VSG isolation testing device, which comprises a computer, a standard signal generator, a standard frequency spectrograph, a switch board for controlling signal direction and a tested instrument, wherein the computer is respectively connected with the standard signal generator and the standard frequency spectrograph, a transmitting interface of the switch board is connected with the standard signal generator, a receiving interface of the switch board is connected with the standard frequency spectrograph, a transmitting one-to-one multi-chip and a receiving one-to-one multi-chip are arranged on the switch board, a plurality of ports are arranged on the switch board, the transmitting interface of the switch board is respectively connected with the plurality of ports on the switch board through the transmitting one-to-one multi-chip, the receiving interface of the switch board is respectively connected with the plurality of ports on the switch board through the receiving one-to-one multi-chip, a plurality of RF interfaces are arranged on the tested instrument, the RF interfaces are connected with ports of the switch board in a one-to-one correspondence mode.
The invention also provides a multi-port automatic VSA-VSG isolation testing method, which is based on the multi-port automatic VSA-VSG isolation testing device and used for testing the following steps: the transmitting interface of the switch board is controlled to be connected and closed with each port of the switch board through the computer, the receiving interface of the switch board is controlled to be connected and closed with each port of the switch board through the computer, the trend of signals is controlled, and the computer is used for controlling the standard frequency spectrograph to send out test signals to carry out the VSA-VSG isolation test.
As a further improvement of the present invention, the ports of the switch board include a first port and a second port, the RF interface includes a first RF interface and a second RF interface, the first port is connected to the first RF interface, the second port is connected to the second RF interface, the first RF interface is set to be VSG by a computer, the second RF interface is set to be VSA by a computer, the transmitting interface of the switch board is controlled to be only connected to the second port, the receiving interface of the switch board is controlled to be only connected to the first port, the computer is used to control the standard signal generator to emit signals with frequency point of 2400, frequency offset of sin1MHz, and power i of 5dB, the measured instrument is controlled to set VSA frequency point of 2400 as a received signal with frequency point of 2400 as sin1MHz, the VSG is set as a received signal with frequency point of 2400, frequency offset of sin0MHz, and power of-70 dB, the control standard spectrometer is set as a received signal with frequency point of 2401 and frequency offset of 0MHz, and (5) analyzing and obtaining the isolation with the frequency point of 2401, and completing the test.
The invention has the beneficial effects that: by the scheme, the multi-port automatic VSA-VSG isolation degree test is realized, and the test efficiency is high.
Drawings
FIG. 1 is a schematic diagram of a multi-port automated VSA-VSG isolation test apparatus of the present invention.
Figure 2 is a schematic diagram of a switchboard of a multi-port automated VSA-VSG isolation test apparatus of the present invention.
Detailed Description
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
Brief description:
TX is used for transmitting;
RX, receiving;
VSA, signal analysis;
VSG is used for generating signals;
VSA-VSG isolation the adjacent RF ports of the WLAN simulator are respectively set to be VSA and VSG, and the signal interference degree exists when the WLAN simulator works simultaneously.
As shown in fig. 1 to 2, a multi-port automatic VSA-VSG isolation testing apparatus includes a computer 1 (PC), a standard signal generator 3, a standard spectrometer 2, a switch board 4 for controlling signal trend, and a device under test 5, wherein the computer 1 is respectively connected to the standard signal generator 3 and the standard spectrometer 2, a transmitting interface (TX port) of the switch board 4 is connected to the standard signal generator 3, a receiving interface (RX port) of the switch board 4 is connected to the standard spectrometer 2, a transmitting one-divided-into-multiple chip and a receiving one-divided-into-multiple chip are disposed on the switch board 4, a plurality of ports are disposed on the switch board 4, a transmitting interface of the switch board 4 is respectively connected to a plurality of ports on the switch board 4 through the transmitting one-divided-into-multiple chip, a receiving interface of the switch board 4 is respectively connected to a plurality of ports on the switch board 4 through the receiving one-divided-multiple chip, and a plurality of RF interfaces are arranged on the tested instrument 5, and the RF interfaces are in one-to-one correspondence with and connected with the ports of the switch board 4.
A multi-port automatic VSA-VSG isolation testing method is characterized in that a switch board 4 capable of controlling signal trend is added on the basis of a multi-port automatic VSA-VSG isolation testing device, and the switch board 4 mainly has the function of controlling the connection and the disconnection of ports 1 to 8 through a program on a PC (personal computer) to control the switch board 4TX port. Or controlling the RX port of the switch board 4 to turn on and off the ports 1 to 8. The internal principle of the specific switch board 4 is shown in fig. 2, and its internal RX port and TX port both have chips similar to 1-8, and 8 interfaces of the chip connect ports 1 to 8, respectively. The chip may be enabled for a certain interface by a program.
The following are specific implementation steps:
the first step is as follows: the tested instrument 5 selects WT208C, the TX port on the switch board 4 is connected with the signal port on the standard signal generator 3, the RX port is connected with the signal receiving port on the standard spectrum analyzer 2, and the ports 1 to 8 on the switch board 4 are respectively connected with RF1 to RF8 on WT 208C. The final connection is shown in fig. 1.
The second step is that: the isolation of scenario 1 (i.e., RF1 signaling, RF2 receiving, noted VSA: RF1; VSG: RF 2) for a WT208C instrument was tested for scenario 1 VSG: RF1; VSA: RF 2. RF1 on WT208C is programmed to be VSG and RF2 is programmed to be VSA. And controls the TX port of the switch board 4 to be communicated with the port 2 only, and controls the RX port to be communicated with the port 1 only.
The third step: the PC software program is used for controlling the standard signal generator 3 to send out a frequency point of 2400, a frequency deviation of sin1MHz and a power i of 5 dB. The WT208C instrument is controlled to set the VSA to receive signals at 2400 frequency points and sin1MHz frequency offset. The VSG is set to have a frequency point of 2400, frequency offset of sin0MHz and power of-70 dB. And controlling the standard frequency spectrograph 2 to receive signals with frequency point of 2401 and frequency offset of sin0 MHz. The isolation a1 of the scene 1 under the frequency point 2401 is analyzed and obtained, and the test of the scene 1 is completed
The fourth step: for the other 55 scenarios, such as: scene 2 VSG RF1 and VSA RF 3. The second and third step tests were performed.
The invention provides a multi-port automatic VSA-VSG isolation testing device and method, which have the following advantages:
1. the human resource input is saved.
2. The problem of low equivalent rate of wasting time in the process of dismounting and mounting the SMA connector on the RF port is solved.
3. The problem of complicated testing such as retesting and the like caused by easily confusing or forgetting which scene is tested in a testing scene is avoided.
4. The problem that tools such as the SMA connector and the N head are easily abraded is solved.
5. The problems of inaccurate data such as data errors and the like caused by improper operation due to multiple operation times of the SMA connector are solved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (1)
1. A multi-port automatic VSA-VSG isolation testing method is characterized in that a multi-port automatic VSA-VSG isolation testing device is provided, and the device comprises a computer, a standard signal generator, a standard frequency spectrograph, a switch board for controlling signal trend and a tested instrument, wherein the computer is respectively connected with the standard signal generator and the standard frequency spectrograph, a transmitting interface of the switch board is connected with the standard signal generator, a receiving interface of the switch board is connected with the standard frequency spectrograph, a transmitting one-divided-into-multiple chip and a receiving one-divided-into-multiple chip are arranged on the switch board, a plurality of ports are arranged on the switch board, the transmitting interface of the switch board is respectively connected with the plurality of ports on the switch board through the transmitting one-divided-into-multiple chip, the receiving interface of the switch board is respectively connected with the plurality of ports on the switch board through the receiving one-divided-into-multiple chips, the tested instrument is provided with a plurality of RF interfaces which are in one-to-one correspondence with and connected with ports of the switch board, and based on the multi-port automatic VSA-VSG isolation testing device, the following tests are carried out: the transmission interface of the switch board is controlled to be connected and closed with each port of the switch board through a computer, the receiving interface of the switch board is controlled to be connected and closed with each port of the switch board through the computer, the trend of signals is controlled, a test signal is sent out through a computer control standard frequency spectrograph, and VSA-VSG isolation degree test is carried out, the ports of the switch board comprise a first port and a second port, the RF interfaces comprise a first RF interface and a second RF interface, the first port is connected with the first RF interface, the second port is connected with the second RF interface, the first RF interface is set to be VSG through the computer, the second RF interface is set to be VSA through the computer, the transmission interface of the switch board is controlled to be connected with the second port only, the receiving interface of the switch board is controlled to be connected with the first port only, and a frequency point of 2400MHz is sent out through a computer control standard signal generator, The method comprises the steps of controlling a tested instrument to set a VSA to receive signals with frequency points of 2400MHz and sin1MHz, setting a VSG to receive signals with frequency points of 2400MHz, waveform of sin0MHz and power of-70 dBm, controlling a standard frequency spectrograph to set received signals with frequency points of 2401MHz and sin0MHz, analyzing and obtaining the isolation degree under the frequency point of 2401MHz, and completing the test.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810005945.0A CN108234040B (en) | 2018-01-03 | 2018-01-03 | Multi-port automatic VSA-VSG isolation testing method |
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| CN201810005945.0A CN108234040B (en) | 2018-01-03 | 2018-01-03 | Multi-port automatic VSA-VSG isolation testing method |
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| CN108234040A CN108234040A (en) | 2018-06-29 |
| CN108234040B true CN108234040B (en) | 2021-02-09 |
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| CN201985869U (en) * | 2010-12-22 | 2011-09-21 | 中国空间技术研究院 | Radio frequency channel switching device |
| CN204349997U (en) * | 2015-02-06 | 2015-05-20 | 深圳市极致汇仪科技有限公司 | A kind of multiplexed port device of comprehensive tester |
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Address after: 518000 5C, 1, building No. 6, Ting Wei Road, 67 District, Xingdong community, Baoan District Xin'an, Shenzhen, Guangdong. Applicant after: SHENZHEN JIZHI HUIYI TECHNOLOGY CO., LTD. Address before: 518000 Building 2, Zone 2, Block 2, Honghualing Industrial South Zone, 1213 Liuxian Avenue, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN JIZHI HUIYI TECHNOLOGY CO., LTD. |
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