Rohde & Schwarz SMB100A - Adjustment of Stereo Coder Module; Internal Self Test

Instrument Function
R&S
®
SMB100A
121Operating Manual 1407.0806.32 ─ 13
Selects the synchronization bandwidth for an external reference signal. The wideband
setting is provided for using very good reference sources of high spectral purity.
"Narrow"
Synchronization bandwidth is 1 Hz.
"Wide"
Synchronization bandwidth is 750 Hz.
Remote command:
[:SOURce]:ROSCillator:EXTernal:SBANdwidth on page 366
Adjustment Active - Reference Oscillator
Selects adjustment mode.
"OFF"
The calibrated adjustment value of the internal reference frequency is
used. This value is determined at one of the R&S service shops during
calibration.
"ON"
A user-defined adjustment value is used. The value is entered under
"Adjustment DAC Value".
This allows the frequency to be impaired freely, for example to simulate
a frequency error.
The instrument is no longer in the calibrated state. However, the cali-
bration value is not changed and the instrument resumes the calibrated
state after switching the "Adjustment State" to Off.
Remote command:
[:SOURce]:ROSCillator[:INTernal]:ADJust[:STATe] on page 367
Adjustment DAC Value
Enters a user-defined adjustment value for the internal reference frequency. This value
is not used unless "Adjustment Active On" is selected.
Note: A factory preset resets this setting to the calibration value of the instrument.
Remote command:
[:SOURce]:ROSCillator[:INTernal]:ADJust:VALue on page 366
5.3.5 RF Level
5.3.5.1 Overview of RF Level
Message "Level overrange/underrange"
If this message appears in the status line, the set level ("Level") is out of range (see data
sheet).
In this case, the signal level at the output can deviate from the set value.
The value of the RF level is displayed in the level field in the header of the instrument's
display and the easiest way to set the RF level is to set it directly in this field.
RF Block