At present, domestic enterprises mainly use advanced testing equipment at home and abroad in the parameter testing process of optical communication products. Most of the various testing instruments exist in isolation, and the various knobs, buttons, and human eyes on the instrument control panel are manually debugged to view the waveform or data on the instrument. This not only makes the testing process complicated and error-prone, but also the testing efficiency is very low. Therefore, improving efficiency, reducing costs, and realizing the test automation of optical communication modules have become one of the keys to improving the market competitiveness of optoelectronic enterprises.

It is understood that other optical module manufacturers use virtual instrument technology implementation of the optical module performance parameters of the automatic test process, this way to use a large number of expensive instruments, VISA compatible interface connected to the PC, common examples are the use of test equipment: Agilent's digital communication analyzer 86100B, E8403AVXI chassis, VXI81250 error meter module, China Electronics Technology Group, Research Institute AV2495 optical power meter, AV6381 programmable optical attenuator, etc. Among them 86100B, AV2495 optical power meter, AV6381 programmable optical attenuator with GPIB interface, through Agilent's GPIB card to connect these test instruments with GPIB interface into a complete system, using Agilent VISA library to write test applications to control instrument operation. The Agilent VXI 81250 bit error meter module is inserted into the Agilent E8403A VXI chassis when in use. The PCI IEEE1394 card of Asahi Electric Company needs to be inserted into the computer. The 0-slot module E8491B of the VXI chassis is connected to the 1394 card in the computer through the IEEE 1394 PC Link to VXI cable. For the Agilent 81250 module, an application program is written on the basis of the Agilent VISA library to realize the control operation of it. This approach can be said to be a huge waste of resources for professional instruments. With the accumulation of our F-tone technology, we can realize the functions of optical power, sensitivity, bit error meter and attenuator at a lower cost, and have high accuracy and speed.