Electromagnetic compatible testing method of photo electric conversion module
A photoelectric conversion module, electromagnetic compatibility technology, applied in electromagnetic field characteristics, electromagnetic wave transmission systems, electrical components and other directions, can solve the problems of large electromagnetic radiation, failure to achieve test results, etc., to achieve the effect of saving investment
Inactive Publication Date: 2003-12-03
SICHUAN TIANYI COMHEART TELECOM
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Problems solved by technology
The pseudo-random code sequence PRBS7 is characterized by rich spectrum and no fluctuations in the average power value of each frequency band, which is indeed a major disadvantage for the EMC test of GBIC
Because the electromagnetic compatibility test conducted by the manufacturer itself is often difficult to shield the electromagnetic radiation of the environment to achieve the effect of a "microwave darkroom" due to financial and other reasons, but in reality, due to the extensive use of various radio communication equipment, the electromagnetic radiation of the environment is often large
When the electromagnetic radiation of the environment is large, the electromagnetic radiation of the GBIC using the pseudo-random code sequence PRBS7 as the input signal is evenly distributed in each frequency, and the field strength of each frequency becomes smaller, which is often "submerged" in the electromagnetic radiation of the environment In the signal noise, the test effect cannot be achieved
Method used
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[0033] The equipment used in the present invention is the same as the traditional test equipment, except that a microwave anechoic chamber is not needed.
[0034] testing method:
[0035] 1. Connect the signal source to the signal input port of the GBIC evaluation test board with a radio frequency cable, and shield the signal output port of the GBIC evaluation test board with a radio frequency terminator (50Ω);
[0036] 2. Connect the power supply terminal of the GBIC evaluation test board to the DC regulated power supply, and adjust the output of the DC regulated power supply to +5V;
[0037] 3. Insert the standard GBIC and the GBIC to be tested into the GBIC evaluation test board, and use the SC / FC-SC / FC double-ended jumper to connect the sending end of the GBIC to the receiving end;
[0038] 4. Turn on the DC stabilized power supply, turn on the signal source, adjust the signal source to the corresponding period code (12.5MHz, 25MHz, 50MHz, 12.5MHz, 250MHz, 375MHz, 500MHz,...
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Abstract
An electromagnet-compatible test method of photoelectric converter module includes connecting signal source to tester board, shielding the signal output of tester board by RF terminator, connecting tester board to power supply, inserting the photoelectric converter module to be tested in the tester board, short connection between its transmitting and receiving terminals by jumper, turning on signal source and power supply, regulating the relative cycle code and amplitude of signal source, scanning electromagnetic radiation intensities in different bands by spectrometer, and judging if the electromagnetic radiation is up to the standard.
Description
Technical field: [0001] The invention relates to a method for testing the electromagnetic compatibility of a photoelectric conversion module. Background technique: [0002] The GBIC tested by the present invention is a high-speed photoelectric conversion module widely used in local area network (LAN), storage area network (SAN) and other high-speed data communications, and its application is to insert it into a Gigabit Ethernet switch or other high-speed data communications The dedicated socket of the device is used in conjunction with a Gigabit Ethernet switch or other high-speed data communication equipment. Electromagnetic compatibility refers to the electromagnetic impact of the equipment on the surrounding environment when it is working, and can be divided into conduction emission and radiation emission. In order to prevent the equipment from working normally in the working environment, or being affected by the electromagnetic radiation emitted by other surrounding equi...
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Login to View More IPC IPC(8): G01R29/08H04B10/073
Inventor 于涛
Owner SICHUAN TIANYI COMHEART TELECOM