Specifications

ESG Family Signal Generators Adjustments

Wide Bandwidth Phase Modulation Calibration (ESG-A and ESG-D only)

Calibration Guide 5-21

Wide Bandwidth Phase Modulation Calibration

(ESG-A and ESG-D only)

Description

This test is used to calibrate the phase modulation circuitry on the synthesizer board. The

phase modulation has two operational modes: normal and wide bandwidth. This

calibration determines the attenuation correction factors for maximum deviation for each

of the phase modulation out-of-band ranges for normal and wide bandwidth modes and

in-band and out-of-band operation. This calibration MUST be performed at the same

frequency as the FM out-of-band calibration (1 GHz). The resulting correction factors are

then stored in the signal generator’s ﬁrmware.

Required Test Equipment

• HP/Agilent 3458A Digital Multimeter

• HP/Agilent 8902A Option 010 Measuring Receiver

• HP/Agilent 33120A 15 MHz Function/Arbitrary Waveform Generator

Procedure

Figure 5-17 Wide Bandwidth Phase Modulation 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.