Checking The Frequency Offset Group (Option 080) - Agilent Technologies PNA Series Service Manual

Troubleshooting
Measurement System Troubleshooting

Checking the Frequency Offset Group (Option 080)

This section troubleshoots only those circuits specifically related to the
CAUTION
frequency offset group (option 080). Please refer to
Troubleshooting" on page 4-31
S-parameter test—with frequency offset mode off—before proceeding with
this section.
Frequency Offset Group Tests
NOTE A defective A22 switch can exhibit the same symptom as a faulty source.
Therefore, if it is determined that the source is functioning properly, you are
directed to
Equipment Used for These Tests
Equipment Type
Spectrum analyzer
RF cable, 3.5 mm (f) to 3.5 mm (f)
RF cable, 2.4 mm (f) to 2.4 mm (f)
Adapter, 3.5 mm (f) to 3.5 mm (f)
Adapter, 2.4 mm (f) to 2.4 mm (f)
1. Must be capable of measuring signals at 1 MHz, 8.333 MHz and
41.667 MHz.
Getting Ready to Test
Before checking the assemblies, you must open the analyzer.
Use an antistatic work surface and wrist strap to reduce the chance of
CAUTION
electrostatic discharge for all of the procedures in this chapter.
1. Turn off the analyzer power.
2. Unplug the power to the analyzer and disconnect all rear panel connections.
3. Remove the covers from the analyzer. Refer to
4. With the covers off, plug in the analyzer and turn on the power.
5. From , click
Channel
Frequency Offset on/off
Checking the A10 5 MHz Reference Output
1. Refer to the block diagram at the end of this chapter and to
Including 080" on page
board, A10J11.
4-54
"Checking the Signal Separation Group" on page
Model or
Part Number
8565E
85131C
85133C
83059B
11900B
. In the
Frequency Offset
box to select. Click
6-19. Locate flexible cable W94, at the A10 frequency reference
PNA Series Microwave Network Analyzers
"Where to Begin
and refer to the appropriate standard
Alternate Model
or Part Number
1
856xE
Any
Any
85052-60012
85056-60007
"Removing the Covers" on page
dialog box, click in the
Frequency Offset
.
OK
"Top Cables, All Options
E8361A
4-49.
7-6.
Service Guide E8361-90001