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166 Chapter2
Instrument Functions: A - L
FREQUENCY / Channel
Instrument Functions: A - L
Range:
Remote Command:
[:SENSe]:FREQuency:STOP <frequency>
[:SENSe]:FREQuency:STOP?
Example: FREQ:STOP 1600
FREQ:STOP?
2.6.4 CF Step
Changes the step size for the center frequency and start/stop frequency functions. Once a
step size has been selected and the center frequency function is activated, the step keys
(and the UP|DOWN parameters for Center Frequency from remote commands) change
center frequency by the step-size value. The step size function is useful for finding
harmonics and sidebands beyond the current frequency span of the analyzer. When
auto-coupled in a non-zero span, the center frequency step size is set to 10% of the span.
Key Path:
FREQUENCY
State Saved: Saved in Instrument State
Factory Preset: Span/10
Knob
Increment:
Step Key
Increment:
Model Frequency Range
E4440A –100.0000000 MHz to 27.0 GHz
E4443A –100.0000000 MHz to 13.7 GHz
E4445A –100.0000000 MHz to 7.2 GHz
E4446A –100.0000000 MHz to 44.5 GHz
E4448A –100.0000000 MHz to 51.0 GHz
if Span = 0 Hz increment = RBW/20
if Span > 0 Hz increment = Span/200
if CFStep=auto,Span=0Hz step=RBW
if CFStep=auto,Span>0Hz step=Span/10
if CF Step = manual step = 1, 2, 5 sequence