Service Guide E8364-90038 3-43
PNA Series Microwave Network Analyzers Tests and Adjustments
E8362C, E8363C, E836C Adjustments
LO Offset 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
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 “Removing the Covers” on page 7-6.
3. Connect a GPIB cable between the analyzer and the power meter.
4. Remove the semi-rigid cable connected to J3 LO OUT and the RECEIVER LO IN on the A13 frequency
offset receiver assembly.
5. Connect the right angle adapter to A13 LO OUT connector.
Figure 3-20 Setup for the LO Offset Adjustment
6. Connect the power sensor 8487A and the 11901D adapter or the E4413A power sensor to the end of the
Equipment Type
Model or
Part Number
Alternate Model
or Part Number
Power meter E4418B/E4419B E4418A/E4419A
Power sensor, 2.4 mm
8487A
E4413A
a
a. The E4413A 3.5 mm power sensor may be used instead of the 8487A power sensor and
11901D adapter.
Adapter, 3.5 mm (m) to 2.4 mm (f) 11901D
Adapter, SMA (m) to SMA (f), right angle 1250-1249 Equivalent
5/16 inch, open-end torque wrench (set to
10 in-lbs)
8710-1765 N/A
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