Agilent Technologies 33250A User Manual (English)

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182

Chapter 4 Remote Interface Reference

Frequency Sweep Commands

FREQuency:CENTer {<frequency>|MINimum|MAXimum}

FREQuency:CENTer? [MINimum|MAXimum]

Set the center frequency (used in conjunction with the frequency span).

Select from 1

Hz to 80 MHz

(limited to 1 MHz for ramps and 25 MHz for

arbitrary waveforms). The default is 550 Hz. MIN = 1 µHz. MAX = based

on the frequency span and maximum frequency for the selected function

as shown below. The

:CENT?

query returns the center frequency in hertz.

Center Frequency (max) = Max. Frequency –

• The following equation shows the relationship between the center

frequency and the start/stop frequency.

Center Frequency =

FREQuency:SPAN {<frequency>|MINimum|MAXimum}

FREQuency:SPAN? [MINimum|MAXimum]

Set the frequency span (used in conjunction with the center frequency).

Select from 0 Hz to 80 MHz

(limited to 1 MHz for ramps and 25 MHz

for arbitrary waveforms). The default is 900 Hz. MIN = 0 Hz. MAX =

based on the center frequency and maximum frequency for the selected

function. The :SPAN? query returns the span in hertz (can be a positive

or negative value).

Frequency Span (max) = 2

(Max. Frequency – Center Frequency)

•To sweep up in frequency, set a positive frequency span.

To sweep down in frequency, set a negative frequency span.

• The following equation shows the relationship between the span and

the start/stop frequency.

Frequency Span = Stop Frequency – Start Frequency

Span

---------------

Stop Frequency Start Frequency

–

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General

Frequency Range	1 µHz to 80 MHz
Amplitude Range	10 mVpp to 10 Vpp into 50 Ω
Output Impedance	50 Ω
Modulation Types	AM, FM, PM, FSK, PWM
Sweep Modes	Linear, Logarithmic
Function Generator Type	Arbitrary
Waveforms	Sine, Square, Ramp, Triangle, Noise, Arbitrary
Interface	GPIB, USB