7-14
Adjustments
Manual Adjustments
Detector Offset (8648A Only)
(Not used for serial prefixes ≥ 3847A/3847U)
Description
This adjustment sets up the output board to allow the detector offset potentiometer to be
adjusted. A high level reference is set up and then the DAC is reduced by 13 dB and the
detector offset potentiometer is adjusted for 13 dB.
Required Test Equipment
• Power Meter
• Power Sensor
Procedure
Figure 7-12. Detector Offset Test Setup
1. Connect the equipment as shown above.
2. Preset all of the equipment.
3. Follow the instructions as they are displayed on the PC.
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