Atec Agilent-8563E - Manual (Page 111)

Adjustments ESG Family Signal Generators
FM Path Offset Calibration
5-14 Calibration Guide
FM Path Offset Calibration
Description
This test is used to remove the offsets associated with the various FM1 and FM2 audio
paths on the reference board. When FM is enabled, voltage offsets on the reference and
synthesizer boards appear as frequency shifts on the synthesizer VCO. By using a
frequency counter to measure the frequency of the VCO, the voltage offsets can be
quantified. The voltage offsets are adjusted and stored in the signal generator’s firmware.
Required Test Equipment
• HP/Agilent 53132A Option 050 Universal Counter
Procedure
Figure 5-11 FM Path Offset Calibration Setup
1. Connect the equipment as shown above.
2. Preset all of the equipment.
3. Follow the instructions as they appear on the controller’s display.