Agilent Technologies 8590L Service Manual page 245

Troubleshooting the Analyzer
Using the Internal Service-Diagnostic Routines
Verify the 10 V reference detector
This service-diagnostic routine verifies the 10 V reference. +10 V is
used as a reference for the DACs and originates on the A7 analog
interface board assembly. Frequency and amplitude errors will occur if
this voltage is incorrect.
1. Return to the diagnostics menu by pressing the following analyzer
2. Verify the 10 V reference detector by pressing
Figure 4-13 10 V Reference Detector
246
keys.
,
CAL, More 1 of 4 More 2 of 4
,
SERV DIAG More 1
• If the signal trace is at the top of the display, the 10 V reference
detector is functioning properly. See
• If the signal is not at the top of the display, the problem is isolated
to the A7 analog interface board assembly. Refer to
further troubleshooting.
, ,
More 2 More 3
Figure
.
10V REF DETECTOR
4-13.
Chapter 6 for
Chapter 4