Rohde & Schwarz SMIQ02B - Setting NOISE;DIST Menu

Noise Generator and Distortion Simulator SMIQ
1125.5555.03 2.384 E-9
2.24.1 Setting NOISE/DIST Menu
The NOISE/DIST menu comprises all the settings of the noise generator and the distortion simulator.
For calibration of the noise generator and the distortion simulator, see Chapter 2, Section Calibration
VECTOR MOD.
Note: Functions NOISE/DIST and BB-AM cannot be set at the same time and switch off
mutually.
Menu selection: NOISE/DIST
FREQ
100.000 000 0
MHz
LEVEL
- 30.0
dBm
FREQUENCY
LEVEL
ANALOG MOD
VECTOR MOD
DIGITAL MOD
DIGITAL STD
NOISE/DIST
LF OUTPUT
SWEEP
LIST
MEM SEQ
UTILITIES
OFF ON
0.0 dB
20.0 kHz
OFF ON
POLYNOMIAL LIST
CURRENT: TWTA
-3.12 dB
NOISE
CARRIER/NOISE RATIO
SYSTEM BANDWIDTH
DISTORTION
CHARACTERISTIC...
SELECT LIST...
POLYNOMIAL...
LEVEL CORRECTION
RECALCULATE
Fig. 2-239 Menu NOISE/DIST (presetting)
NOISE
Switch on/off of noise source. The noise source is an AWGN (Additive White
Gaussian Noise) signal.
IEC/IEEE-bus commands
:SOUR:NOIS ON
CARRIER/NOISE
RATIO
Input value of the carrier-to-noise ratio. Setting range is 5.0 to 30 dB. When
changing the CARRIER/NOISE RATIO, the noise power is changed as well
but the carrier power remains unchanged. The carrier power is the power
displayed in the header under LEVEL.
IEC/IEEE-bus command
:SOUR:NOIS:SNR 10 dB
SYSTEM
BANDWIDTH
Input value of system bandwidth.
The system bandwidth is the HF-bandwidth by which the noise power is
calculated. The bandwidth of the generated noise can only be set in steps.
The set bandwidth is to be 1.4 times the system bandwidth at minimum and
10 MHz at maximum.
Setting range: 10 kHz to 10 MHz;
Resolution: three digits
IEC/IEEE-bus command
:SOUR:NOIS:BAND 1.23 MHz
DISTORTION
Switch on/off of distortion.
IEC/IEEE-bus command
:SOUR:DIST ON