Figure 6-5 Troubleshooting Guide - Ttl Inputs - Agilent Technologies E4416A Service Manual

6 Troubleshooting
Investigate Power
Meter Failure

Figure 6-5 Troubleshooting Guide - TTL Inputs

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Start
Power Up
meter
POST
No
Pass?
Yes
Connect Sensor to Channel A
Connect Sensor to Channel B (if applicable)
Any Sensor
Errors?
No
Select
System/Inputs
More
Service
Self Test
Instrument Self Test
Self Test
Yes
Errors?
No
Select
Done
Zero/Cal
More
TTL Inputs On
Apply TTL logic 0 pulse to RJ45 connector pin 5
wrt pin 8. Apply TTL logic 1 pulse to RJ45 connector
pin 6 wrt pin 8. See User's Guide Ch. 2 for timing.
A
End
Yes
Investigate
Sensor Failure
E4416A/E4417A Power Meters Service Guide