Agilent Technologies 35670A Manual page 484

Dynamic signal analyzer gpib programming

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[SENSe:]FREQuency:STARt

Specifies the start (lowest) frequency for the frequency band of the current measurement.

Command Syntax:

<number> ::= a real number (NRf data)

<unit> ::= [HZ|CPM]

<step> ::= UP|DOWN

<bound> ::= MAX|MIN

Example Statements:

Query Syntax:

Return Format:

Attribute Summary:

Description:

In FFT analysis instrument mode (INST:SEL FFT):

The values of FREQ:STAR and FREQ:SPAN define the frequency bandwidth. The size of the

bandwidth (FREQ:SPAN) remains constant if the start frequency changes.

Allowable start frequency values are defined by the following formulas:

single channel measurements (without option AY6):

0 ≤ start frequency ≤ (115 kHz - (frequency span/2))

two channel measurements or single channel measurements with option AY6:

0 ≤ start frequency ≤ (57.5 kHz - (frequency span/2))

four channel measurements:

0 ≤ start frequency ≤ (28.75 kHz - (frequency span/2))

Step size (FREQ:STEP) determines the change in frequency which results when you send UP or DOWN

with this command.

See figure 18-2 for the range of start frequency values with different bandwidths.

[SENSe:]FREQuency:STARt {<number>[<unit>]}|<step>|<bound>

0.0:114999.9023

OUTPUT 711;"SENS:FREQ:STAR 1000"

OUTPUT 711;":freq:star 4.8e3"

[SENSe:]FREQuency:STARt?

not applicable

Synchronization Required:

Preset State:

SCPI Compliance:

command/query