Checking The Signal Separation Group - Agilent Technologies E8362C Service Manual

Troubleshooting
Measurement System Troubleshooting

Checking the Signal Separation Group

Before checking the signal separation group, perform the following procedures:
• "Getting Ready to Test" on page 4-31
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 Type
Power meter
Power sensor
Adapter, 3.5 mm (f) to 3.5 mm (f)
Power sensor, 2.4 mm
Adapter, 2.4 mm (f) to 2.4 mm (f)
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
menu, point to
Service, Utilities,
3. Set the sweep speed for a 10 second sweep: On the
10.000 seconds in the
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 within -12 dBm ±4 dB for E836xB with no
options or -17 dBm ±4 dB for E836xB with options, over the entire frequency range.
• If the measured power is correct, go to
• If the measured power is not correct, go to
on page 4-39.
4-38
Models
Used With
E8362C
E8362C
E8363C, E8364C
E8363C, E8364C
(Figure 4-6) is not on the analyzer screen, perform the following: On the
and then click
Receiver Display.
box.
Sweep Time
"Checking the Receiver Group" on page
"Checking the Signal through the Signal Separation Path"
PNA Series Microwave Network Analyzers
Model or
Part Number
E4418B/E441B
E8485A
83059B
8487A
11900B
menu, click
Sweep Sweep Time
E8362C, E8363C, E8364C
Alternate Model or
Part Number
E4418A/E4419A
None
85052-60012
None
85056-60007
System
and set the time to
4-42.
Service Guide E8364-90038