Hi,
I have a 54835A 4 channel scope ( VIN #033 Rev. A.04.30.) The scope works fine , performance tests and all self tests are fine . If i start the self calibration from the UTILITY menu , vertical for all channels is pass but trigger for all channels is fail .
The error details are :
Logic Trigger Duration
Logic Trigger Delay
Main Trigger Treshold Delay
Main Trigger Runt Delay
Main Trig Time Qual Runt Delay
Any info will be appreciated
wsand
I have a 54835A 4 channel scope ( VIN #033 Rev. A.04.30.) The scope works fine , performance tests and all self tests are fine . If i start the self calibration from the UTILITY menu , vertical for all channels is pass but trigger for all channels is fail .
The error details are :
Logic Trigger Duration
Logic Trigger Delay
Main Trigger Treshold Delay
Main Trigger Runt Delay
Main Trig Time Qual Runt Delay
Any info will be appreciated
wsand
This indicates that the Logic Trigger IC on the Acquisition board has a problem. Normally I would recommend replacing the Acquisition board and this would solve the problem. The problem with that suggestion is there are no replacement boards. These boards had to be discontinued early because a lower level part ran out of supply.
My gut feeling is the Start able Oscillator has stopped running
1FJ9-0002 is the Logic trigger part, and you might see I the crystal is running that is next to that IC. I am sure you could replace the crystal, but if it the Logic Trigger IC then that is big trouble.
Regards,
Mark