:FUNCtion<m> Commands 18
Keysight InfiniiVision 4000 X-Series Oscilloscopes Programmer's Guide 403
:FUNCtion<m>[:FFT]:FREQuency:STARt
(see page 1428)
Command Syntax
:FUNCtion<m>[:FFT]:FREQuency:STARt <frequency>
<m> ::= 1 to (# math functions) in NR1 format
<frequency> ::= the start frequency in NR3 format.
The :FUNCtion<m>[:FFT]:FREQuency:STARt command sets the start frequency in
the FFT (Fast Fourier Transform) math function's displayed range.
The FFT (Fast Fourier Transform) math function's displayed range can also be set
with the :FUNCtion<m>[:FFT]:CENTer and :FUNCtion<m>[:FFT]:SPAN commands.
Query Syntax
:FUNCtion<m>[:FFT]:FREQuency:STARt?
The :FUNCtion<m>[:FFT]:FREQuency:STARt? query returns the current start
frequency in Hertz.
Return Format
<frequency><NL>
<frequency> ::= the start frequency in NR3 format.
See Also • ":FUNCtion<m>[:FFT]:FREQuency:STOP" on page 404
• ":FUNCtion<m>[:FFT]:CENTer" on page 402
• ":FUNCtion<m>[:FFT]:SPAN" on page 407
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