Keysight Technologies E4417A

6 Troubleshooting
136 Keysight E4416A/E4417A Power Meters Service Guide
Figure 6-7 Troubleshooting Guide - TTL Inputs (continued)
B
Remove A2 Processor Assy (see chapter 5) to gain access
to the Communications Assembly connector.
Measure resistance between Rmt I/O connector pin 6
and connector J4 pin 43.
Meter reading
470Ω +/− 10%
Measure resistance between Rmt
I/O connector pin 5 and connector
J4 pin 44.
Meter reading
470Ω +/− 10%
A2 Processor assy defective
End
A4 Comms assy defective
No
No
Yes
Yes