R&S SMB Test Procedures
1407.0806.82 1.49 E-5
Total Harmonic Distortion and Channel Separation
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 40 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 Audio Analyzer UPL:
FILE:
LOAD INSTRUMENT STATE: Mode = Default
GEN:
INSTRUMENT ANALOG: Channel(s) 1 (2)
FUNCTION: Voltage = 0.707 V
ANLR:
INSTRUMENT: Channel(s) 1 & 2
INSTRUMENT: Ch1, Ch2 Imped = 600 Ohm
FREQ / PHASE: Meas Time = Precision
FUNCTION: RMS & S/N
FUNCTION: Unit Ch1, Ch2 = dBr
FUNCTION: Reference Value = STORE Ch1 (Ch2)
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