HP 8562E, Service Manual

Page: 428 / 482

Use of an active probe, such as an HP with another spectrum
analyzer is recommended for troubleshooting the RF circuitry. If an
HP 1120A Active Probe is being used with a spectrum analyzer, such as the
HP
HP
and the HP having dc coupled inputs,
either set the active probe for an ac coupled output or use a dc blocking
capacitor (HP 11240B) between the active probe and the spectrum analyzer
input. Failure to do this can result in damage to the analyzer or to the probe.
Troubleshooting Using the TAM
Refer to Chapter 7, “General Troubleshooting,” for information on enabling the TAM for use
with the HP 85623 Spectrum Analyzer.
When using Automatic Fault Isolation, the TAM indicates suspected circuits that need to be
manually checked. Use Table 12-l to locate the manual procedure.
Table 12-2 lists assembly test connectors associated with each Manual Probe Troubleshooting
test. Figure 12-l illustrates the location of the Al5 test connectors.
A l 4
FREQUENCY
CONTROL
J 1 6 J 1 8
( R E
V I
S
I O
N
CONNECTOR)
J 7
J 2 3
J 1 7
A l 5
RF
I
Figure 12-1. Al4 and Al5 Test Connectors
12-2 RF Section