Rohde & Schwarz FSVA - Page 228

Instrument Functions
R&S
®
FSVA/FSV
228Operating Manual 1176.7510.02 ─ 09
Markers are displayed in the selected unit ("Unit" softkey). Delta markers are displayed
in % referenced to the voltage value at the position of marker 1. This is the default set-
ting for linear scaling.
Remote command:
DISP:TRAC:Y:SPAC LIN, see DISPlay[:WINDow<n>]:TRACe<t>:Y:SPACing
on page 749
Range Lin. Unit ← Range
Selects linear scaling in dB for the level display range, i.e. the horizontal lines are
labeled in dB.
Markers are displayed in the selected unit ("Unit" softkey). Delta markers are displayed
in dB referenced to the power value at the position of marker 1.
Remote command:
DISP:TRAC:Y:SPAC LDB, see DISPlay[:WINDow<n>]:TRACe<t>:Y:SPACing
on page 749
Unit
Opens the "Unit" submenu to select the unit for the level axis.
The default setting is dBm.
If a transducer is switched on, the softkey is not available.
In general, the signal analyzer measures the signal voltage at the RF input. The level
display is calibrated in RMS values of an unmodulated sine wave signal. In the default
state, the level is displayed at a power of 1 mW (= dBm). Via the known input impe-
dance (50 Ω or 75 Ω), conversion to other units is possible. The following units are
available and directly convertible:
●
dBm
●
dBmV
●
dBμV
●
dBμA
●
dBpW
●
Volt
●
Ampere
●
Watt
Remote command:
CALCulate<n>:UNIT:POWer on page 743
Preamp On/Off
Switches the preamplifier on and off.
If option R&S FSV-B22 is installed, the preamplifier is only active below 7 GHz.
If option R&S FSV-B24 is installed, the preamplifier is active for all frequencies.
When measuring Spurious Emissions, using this softkey automatically opens the
"Sweep List" dialog, see "Sweep List dialog box" on page 378.
This function is not available for input from the R&S Digital I/Q Interface (option
R&S FSV-B17).
Remote command:
INPut:GAIN:STATe on page 764
Measurement Parameters