4-46
Service Guide E8364-90001
Troubleshooting
PNA Series Microwave Network Analyzers
Measurement System Troubleshooting
E8362A, E8363A, E8364A
Checking the Signal Separation Group
Before checking the signal separation group, perform the following procedures:
•
“Getting Ready to Test” on page 4-38
Checking the Output Power of the A and B Signals
Using a power meter, you can measure the outputs of the A and B signals from the front
panel. The measurement results will help you isolate a faulty assembly. The outputs of the
R1 and R2 channels cannot be measured because it would necessitate breaking the phase
lock loop, causing all of the signals to be lost.
Equipment Used for These Tests
Equipment Setup
1. Before starting these checks, zero and calibrate the power meter. (See the power meter
user’s guide for instructions on setting the calibration factor.)
2. If the
Receiver Display
(
) is not on the analyzer screen, perform
the following: On the
System
menu, point to
Service, Utilities,
and then click
Receiver
Display.
3. Set the sweep speed for a 10 second sweep: On the
Sweep
menu, click
Sweep Time
and
set the time to 10.000 seconds in the
Sweep
Time
box.
Checking Port 1 Power (A Signal)
The object of this check is to verify the power of the A signal across the entire frequency
range. Perform this test if there is an observed problem only with the channel A trace. The
ten second sweep is slow enough to allow you to observe the output power on the power
meter as the sweep occurs.
1. Connect the power sensor to Port 1.
2. Observe the power reading on the power meter as the sweep occurs on the analyzer.
3. The measured output power on the power meter should be
−
12 dBm
±
4 dB, for an
analyzer with no hardware options or
−
17 dBm
±
4 dB for an analyzer with options, over
the entire frequency range.
• If the measured power is correct, go to
“Checking the Receiver Group” on page 4-50
• If the measured power is not correct, go to
“Checking the Signal through the Signal
.
Equipment Type
Models
Used With
Model or
Part Number
Alternate Model
or Part Number
Power meter
All
E4418B/E441B
E4418A/E4419A
Power sensor
E8362A
E8485A
None
Adapter, 3.5 mm (f) to 3.5 mm (f)
E8362A
83059B
85052-60012
Power sensor, 2.4 mm
E8363A, E8364A
8487A
None
Adapter, 2.4 mm (f) to 2.4 mm (f)
E8363A, E8364A
11900B
85056-60007
Summary of Contents for E8362A
Page 11: ...Service Guide E8364 90001 1 1 1 Safety and Regulatory Information ...
Page 19: ...Service Guide E8364 90001 2 1 2 General Product Information ...
Page 29: ...Service Guide E8364 90001 3 1 3 Tests and Adjustments ...
Page 79: ...Service Guide E8364 90001 4 1 4 Troubleshooting ...
Page 139: ...Service Guide E8364 90001 5 1 5 Theory of Operation ...
Page 169: ...Service Guide E8364 90001 6 1 6 Replaceable Parts ...
Page 215: ...Service Guide E8364 90001 7 1 7 Repair and Replacement Procedures ...
Page 287: ...Service Guide E8364 90001 A 1 A Error Terms ...
Page 303: ...Service Guide E8364 90001 B 1 B Option Enable Utility ...
Page 309: ...Service Guide E8364 90001 C 1 C Firmware Upgrades ...
Page 313: ...Service Guide E8364 90001 D 1 D Operating System Recovery ...