Rohde & Schwarz SMB100A - Signal to Noise Ratio

R&S SMB Test Procedures
1407.0806.82 1.51 E-5
Signal to Noise Ratio
Test setup DUT RF output connected to Modulation Analyzer RF input, Audio
A
nalyzer analog and digital LF output connected to DUT Stereo L, R,
S/P DIF input, Modulation Analyzer L, R output connected to Audio
Analyzer input.
Test method
Demodulation of Stereo signal by Modulation Analyzer,
measurement of demodulated AF signal by Audio Analyzer
Measurement
Setting on DUT:
RF On
Frequency 66 MHz
Level 0 dBm
Stereo Modulation menu:
State On
FM Deviation 67.5 kHz
Audio Source EXT L, R
Mode Stereo R!=L
Stereo Pilot tone settings:
Pilot State On
Pilot Deviation 6.75 kHz
ARI settings:
State Off
RDS settings:
State Off
 Setting on Modulation Analyzer FMB:
DEMODULATION FM-STEREO
INTERN
NOISE FILTER ON
MAN RANGE
RANGE 12 dBm
DEEMPHASIS 50 us