Technical data

5 Troubleshooting Guide
50 N1911A/1912A P-Series Power Meters Service Guide
Introduction
This chapter enables qualified service personnel to diagnose suspected
faults with the power meter Rmt I/O (Remote Input/Output) signal lines
and RS232/422 serial port.
If there is a problem when attempting to use the RS232/422 serial interface
or the remote I/O functions, consult the user’s guide and confirm that all
the user setups are correct before proceeding with the following fault
finding flowcharts.