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Remote
Commands
Key Path
Related Functions
Remote
Commands
N o t e
Function Reference
Single Sweep
INSTrument:SELect
Single Sweep
Initiates one sweep of the measurement range. Use this function to update the
displayed measurement data.
Trigger conditions must be met in order for a single sweep to occur. The
SWEEP indicator light on the front panel is on when the sweep is in progress.
The indicator is off when the sweep is complete.
Tip: Single sweep mode is especially useful when programming the instru-
ment and under the following circumstances:
• insuring the trace reflects current measurement range settings
• capturing traces before processing them with math commands
• capturing traces before positioning markers
Bandwidth/Sweep > Single Sweep
Repeat Sweep
INITiate:IMMediate
Span
Defines the wavelength measurement range for viewing the spectrum.
The span is set symmetrically about the center wavelength. The resolution of
the wavelength readout decreases with an increase in the span setting. When
the span is set to 0, the display's horizontal axis represents time instead of
wavelength. A span of 0 (called zero span mode) configures the instrument as
a fixed tuned receiver.
Zero span mode requires that sensitivity be in Auto mode.
The wavelength measurement range can also be set using the Start WL and
Stop WL functions.
3-86
Refer to "Repeat Sweep" on page 3-71
Refer to "Using Span to Zoom In" on page 2-8
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