Rohde & Schwarz R&S FSP Series, Operating Manual

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R&S FSP Instrument Functions
Analyzer Mode
4.14 Operating Manual 1164.4556.12 - 06
FULL SPAN The FULL SPAN softkey sets the span to the full frequency range of R&S FSP.
Remote command:
FREQ:SPAN:FULL
ZERO SPAN The ZERO SPAN softkey sets the span to 0 Hz. The x-axis becomes the time axis
with the grid lines corresponding to 1/10 of the current sweep time (SWT).
Remote command:
FREQ:SPAN 0Hz
LAST SPAN After changing the span setting the LAST SPAN softkey activates the previous set-
ting. With this function a fast change between overview measurement ( FULL SPAN )
and detailed measurement (manually set center frequency and span) is possible.
Remote command:
--
FREQ AXIS
(LIN LOG)
The FREQ AXIS (LIN LOG) softkey switches between linear and logarithmic scaling
of the frequency axis. Switch over is only possible if the stop/start frequency ratio is
≥
1.4.
The default state is LIN.
The logarithmic frequency axis is only available in analyzer mode and it is not avail-
able in zero span mode, in external mixer mode, with frequency offset or if the ratio
stop frequency / start frequency is below 1.4.
Remote command:
DISP:WIND<1|2>:TRAC:X:SPAC LIN
4.5.3 Level Display Setting and RF Input Configuration – AMPT Key
The AMPT key is used to set the reference level, the maximum level and the display
range of the active window as well as the input impedance and the input attenuation
of the RF input.
The AMPT key opens a menu for setting the reference level and the input attenua-
tion of the active window. The data entry for the reference level ( REF LEVEL soft-
key) is opened automatically.
Further settings regarding level display and attenuation can be made in this menu.
AMPT
Only values > 0 Hz are restored, i.e. a transition between time and frequency
domain is not possible.
REF LEVEL
RANGE LOG 100 dB
RANGE LOG MANUAL
RANGE LINEAR
!
RANGE LINEAR %
RANGE LINEAR dB
UNIT
!
dBm / dBmV / dB
µ
V /
dB
µΑ /
dB
µ
W / VOLT /
AMPERE / WATT
RF ATTEN MANUAL