Language Reference

SP

Set wavelength span of measurement.

Item

Description

Range

Actual range is hardware dependent.

Step Increment

1,2,5,10 sequence

Coupling

WLspan = WLstop 0 WLstart

Preset State

nm

Example

Description

10 OUTPUT 723;"SP 500NM;"

The SP command sets the wavelength range symmetrically around the center wavelength. The zero-span mode is activated whenever the span is 0 Hz. Zero-span mode con￿gures the spectrum analyzer as a ￿xed-tuned receiver, where measured signals are displayed in the time domain instead of the wavelength domain. Sweep time (ST) and resolution bandwidth (RB) are coupled to span.

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