Rohde & Schwarz R&S FSP Series, Operating Manual

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Operating Manual 1164.4556.12 - 06 4.13
R&S FSP Instrument Functions
Analyzer Mode
TRACK BW The TRACK BW softkey defines the search bandwidth for signal tracking. The fre-
quency range is symmetrical with respect to the center frequency.
Remote command:
CALC:MARK:FUNC:STR:BAND 10KHZ
TRACK
THRESHOLD
The TRACK THRESHOLD softkey defines the threshold value for signal detection.
The value is always entered as an absolute level value.
Remote command:
CALC:MARK:FUNC:STR:THR -70DBM
SELECT TRACE The SELECT TRACE softkey selects the trace on which signal tracking is to be per-
formed.
Remote command:
CALC:MARK:FUNC:STR:TRAC 1
4.5.2 Setting the Frequency Span – SPAN Key
The SPAN key opens a menu which offers various options for setting the span.
The entry of the span ( SPAN MANUAL softkey) is automatically active for span > 0
Hz.
For span = 0 Hz the entry for sweep time ( SWEEPTIME MANUAL ) is automatically
active.
With two windows ( SPLIT SCREEN) displayed at the same time, the input data
always refer to the window selected with the SCREEN A/B hotkey.
SPAN
SPAN
MANUAL
The SPAN MANUAL softkey activates the window for manually entering the fre-
quency span. The center frequency is kept constant.
Allowed range of span values:
• for the time domain (span = 0): 0 Hz
• and for the frequency domain (span >0): minspan
≤
f
span
≤
f
max
Remote command:
FREQ:SPAN 2GHz
SWEEPTIME
MANUAL
The SWEEPTIME MANUAL softkey activates the window for entering the sweep
time manually with Span = 0 Hz. The softkey is not available for Span > 0 Hz.
Remote command:
SWE:TIME 10s
SPAN MANUAL
SWEEPTIME MANUAL
FULL SPAN
ZERO SPAN
LAST SPAN
FREQ AXIS (LIN LOG)
f
span
frequency span
minspan smallest selectable span (10 Hz)
f
max
max. frequency