Agilent Technologies E4438C Przewodnik Instalacji Pobierz pdf (Strona 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.

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Agilent Technologies E4438C Przewodnik Instalacji Strona 113