Troubleshooting Guide
5
Keysight N1913/1914A Service Guide
77
Communication Interface Failures
Additional Diagnostic Tests
Type of communication
Debug tips
Possible faults
GPIB communication
Check/reseat the ribbon cable
connecting the PPMC to the main board
Ribbon cable (low probability)
Main board (high probability)
LAN/USB communication
Check visually to see whether or not the
connector is obstructed/damaged
PPMC assembly
Type of functionality
Reason
Recommended test method
Possible faults
USB/LAN functionality The N7800 Series software only tests
functionality over GPIB
Check the DUT responds when
*RST
is sent to it via the USB/LAN
interfaces
PPMC assembly
Sensor functionality
The N7800 Series software does not
prove both paths of the sensor flex
assembly
Connect an E4412A sensor to the
DUT and ensure it can be zeroed/
calibrated
Sensor flex assembly
Summary of Contents for N1913
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