Agilent Technologies E4438C - Manual (Page 113)

Adjustments
FM Out-of-Band Calibration (Not Used with Option UNJ or Option 506)
4- 21
FM Out-of-Band Calibration
(Not Used with Option UNJ or Option 506)
Description
This calibration adjusts the FM out-of-band deviation to match the in-band FM deviation. It also determines
the attenuation values of the out-of-band attenuators and sets the values of some other FM constants. The
loop bandwidth of the synthesizer phase-locked loop is approximately 5 kHz. This calibration is used to set
the FM deviation at rates above the loop bandwidth (out-of-band) so they will equal the deviation rates within
the loop bandwidths (in-band).
Required Test Equipment
• Agilent 3458A Option 002 digital multimeter
• Agilent 8902A measuring receiver
• Agilent 33120A function generator
Procedure
Figure 4-14 FM Out-of-Band Calibration
(Not Used with Option UNJ or Option 506) 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.