![](/images/new-backgrounds/1175785/175785229x1.webp)
Troubleshooting
Introduction
Figure 6-3: Troubleshooting Guide - TTL Inputs
Start
Power Up meter
POST
No
Pass?
Yes
Investigate Power
Meter Failure
Connect Sensor to Channel A
Connect Sensor to Channel B (if applicable)
Any Sensor
Errors?Yes
No
Select
System/Inputs
More
Service
Self Test
Instrument Self Test
Yes |
| Self Test | |
| Errors? | ||
|
| ||
|
|
| |
|
|
|
|
|
| No |
Select
Done
Zero/Cal
More
TTL Inputs On
Apply TTL logic 0 pulse to RJ45 connector pin 5 |
| Investigate | ||
wrt pin 8. Apply TTL logic 1 pulse to RJ45 connector |
| |||
| Sensor Failure | |||
pin 6 wrt pin 8. See User’s Guide Ch. 2 for timing. |
| |||
|
| |||
|
|
|
|
|
|
|
|
|
|
A
End
Agilent E4418B/E4419B Service Guide |