We are currently using 8164B LIGHTWAVE MEASUREMENT SYSTEM and we are having issue with the module slot. Our machine crash and cause the module slot to be irresponsive. Currently we are using 81634B Power Sensor in one of the module slot. Should we get the measurement system checked? Not too sure if its the backplane issue.
It happened during optical testing when an error prompt stated "Fail to load setting", which i believe something have to do with the program file.
This issue now caused 3/4 of the 8164B module slots to be irresponsive and does not reflect any loss data after turning on the laser. I am currently unsure if fixing the program will help revive the other 3 module slots or purely the hardware crashes.
It's pretty hard to guess without knowing the details of how it happens and what is going on at that time. If the instrument is being controlled by a remote program, I guess there could be a timing problem with commands, especially if something asynchronous is being done independently by the instrument. For example when the power meter is run by a remote program, it is best to disable the autorange function and control the range explicitly with the program. Of course if the unit crashes when it is doing nothing, then that should be easy to reproduce if you send the unit in for servicing.