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2-28 Programming Guide

Programming Commands and Examples ESG Family Signal Generators

:FREQuency Subsystem

Frequency Multiplier

:FREQuency:MULTiplier <val>

:FREQuency:MULTiplier?

This command sets the multiplier for the signal generator’s carrier frequency. The choices

for the variable <val> are integers between 1 and 50.

You can multiply the frequency shown on the display without changing the frequency

output at the RF OUTPUT connector (simulating the frequency at the output of a

harmonic multiplier). For example, set the output frequency to 1 MHz. Then send the

command :FREQuency:MULTiplier 3. The display will now show an output frequency of

3 MHz but the actual output frequency will remain at 1 MHz. For any multiplier greater

than 1, the MULT indicator is shown in the frequency area of the display.

*RST Value: 1

Frequency Offset

:FREQuency:OFFSet <val><unit>

:FREQuency:OFFSet?

This command sets the frequency offset. The choices for the variables <val> and <unit>

are frequencies between 0.0 Hz and 200.00 GHz.

A frequency offset changes the value shown in the frequency area of the display but does

not affect the output frequency. For example, if the current output frequency is 1 MHz and

you enter a frequency offset of 3 MHz, the output frequency will remain at 1 MHz but the

display will show a frequency of 4 MHz. This feature lets you simulate the frequency at the

output of a frequency translating device.

A frequency offset can be entered at any time during normal operation and also when you

are operating in frequency reference mode. When an offset has been entered, the OFFSET

indicator is turned on in the frequency area of the display.

*RST Value: 0.0 Hz

Frequency Optimization

:FREQuency:SYNThesis <val>

:FREQuency:SYNThesis?

This command sets the PLL (Phase Lock Loop) bandwidth for optimizing phase noise. The

choices for the variable <val> may range from 1 (offsets below 10 kHz) to 2 (offsets above

10 kHz). This command is used with ESG-A and ESG-D Series instruments only.

*RST Value: 2

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Agilent Technologies ESG Spezifikationen Seite 106