R&S SMJ100A, Operating Manual

Page: 740 / 874

Remote Control Commands
R&S
®
SMJ100A
724 Operating Manual 1403.7458.32 ─ 14
[:SOURce<hw>]:IQ:IMPairment[:STATe]
.......................................................................... 726
[:SOURce<hw>]:IQ:SOURce
...........................................................................................726
[:SOURce<hw>]:IQ:STATe
..............................................................................................726
[:SOURce<hw>]:IQ:SWAP[:STATe]
................................................................................. 727
[:SOURce<hw>]:IQ:WBSTate
..........................................................................................727
[:SOURce<hw>]:BB:IQGain
............................................................................................ 727
[:SOURce<hw>]:IQ:CREStfactor <CrestFactor>
Sets the crest factor of the external analog signal.
Parameters:
<CrestFactor> float
Range:
0 to 35
Increment: 0.01
*RST:
0
Default unit: dB
Example: IQ:CRES 10
specifies a crest factor of 10 dB for the external analog signal.
Manual operation: See "Crest Factor - I/Q Mod" on page 287
[:SOURce<hw>]:IQ:GAIN <Gain>
Sets the baseband gain for the external analog wideband I/Q signal. Thus, the modula-
tion of the I/Q modulator can be optimized for any measurement requirement. The gain
settings for an internal or external baseband signal are performed with command
SOUR:BB:IQGain
.
Parameters:
<Gain> DBM3 | DB0 | DB3 | DB6 | AUTO
DBM3
Activates 0 dB gain.
With this setting, signal distortions are minimized.
DB0
Activates 0 dB gain (standard settings).
DB3
Activates 0 dB gain.
This setting is recommended for 3GPP signals with very high
adjacent channel power ratio (ACPR).
DB6
Activates 0 dB gain.
With this setting, signal noise is minimized.
*RST:
DB3
Example: IQ:SOUR ANAL
selects an external analog signal as the input signal for the I/Q
modulator. The signal must be applied at the inputs I and Q.
SOURce Subsystem