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ESG Family Signal Generators Adjustments
FM 1/2 Path Ratio Gain Calibration
Calibration Guide 5-17
FM 1/2 Path Ratio Gain Calibration
Description
This test equalizes the gain between the FM1 and FM2 paths. The gain of the FM2 path is
adjusted using the FM SCALE DAC and the resulting DAC value is stored in the signal
generator’s firmware. This calibration only affects source-independent gains. When
uncalibrated sources feed into the paths, the gains are adjusted using the Modulation
Source Relative Gain Calibration.
Required Test Equipment
HP/Agilent 3458A Digital Multimeter
HP/Agilent 53132A Option 050 Universal Counter
HP/Agilent 33120A 15 MHz Function/Arbitrary Waveform Generator
Procedure
Figure 5-13 FM 1/2 Path Ratio Gain 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.
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