Lo Power Adjustment - Agilent Technologies E8362A Service Manual

PNA Series Microwave Network Analyzers
E8362A, E8363A, E8364A

LO Power Adjustment

The LO power adjustment is used to adjust the power level of the LO signals from the A20
LO distribution assembly. This adjustment is done for only one LO output. The differences
between each LO output is negligible; therefore, separate adjustments are not required.
Equipment used for the LO Power Adjustment
Equipment Type
Power meter
Power sensor, 3.5 mm
Power sensor, 2.4 mm
Adapter, 2.4 mm (f) to 3.5 mm (m)
5/16-inch, open-end torque wrench
(set to 10 in-lbs)
1/4-inch, open-end wrench
a. Required only if using the 8487A power sensor.
Procedure
1. Turn off the network analyzer and remove the power cable and other external cables
from the rear panel.
2. Remove the outer cover. Refer to
3. Place the analyzer on its side to allow access to the bottom of the analyzer.
4. Connect the equipment as shown in
analyzer and the power meter.
5. With a 5/16-inch open-end wrench, loosen W40 at the first converter (mixer).
6. At the junction of W40 and W14, place a 5/16-inch wrench on the W40 connector and a
1/4-inch wrench on the W14 connector. While holding the 1/4-in wrench to prevent W14
from rotating, disconnect W40 from W14 and move W40 aside.
7. Connect the power sensor to the end of W14, as shown in
Figure 3-22 Setup for the LO Power Adjustment
Service Guide E8364-90001
Models
Used With
All
E8362A
E8363A, E8364A
a
E8363A, E8364A
All
All
"Removing the Covers" on page
Figure 3-22. Connect a GPIB cable between the
Tests and Adjustments
Model or Alternate Model
Part Number or Part Number
E4418B/E4419B E4418A/E4419A
E4413A 8485A
8487A None
11901D None
N/A N/A
N/A N/A
7-6.
Figure 3-22.
Adjustments
3- 47