Rohde & Schwarz SML01, Operating Manual

Page: 281 / 299

R&S®SML / R&S®SMV03 Test sequence
1090.3123.12 10.31 E-6
Setting on FMB - DEMODULATOR FM-STEREO
- CHANNEL L (or R)
- NOISE FILTER OFF
- ABSOLUTE
- MAN RANGE dBm
- RANGE 12dBm
- AUDIO DIST-SINAD
Measurement Channel separation: First note the level of the AF signal on the
UPL in channel 1 as reference, then switch the source to channel 2
and measure level of crosstalk 2 -> 1. Carry out the same in
reverse and measure level of crosstalk 1 -> 2. Limit values
according to data sheet.
Read off harmonic distortion from the FMB, limit values according
to data sheet.
Signal-to-noise ratio
Test setup Test setup 6
Settings on R&S SML / R&S
SMV03 - PRESET
- FREQ
Measurement frequency
Measurement frequency:
10.7 MHz, 66 MHz, 76 MHZ, 98 MHz, 87 MHz, 110 MHz
- LEVEL 0 dBm
- MODULATION STEREO, EXT L,R
- MODE L!=R
- MPX-Deviation 67.5kHz (acc. IEC 60315-4)
Setting on FMB - DEMODULATION FM-STEREO
- INTERN
- NOISE FILTER ON
- MAN RANGE
- RANGE 12dBm
- DEEMPHASIS 50us
Setting on UPL - FILE:
- LOAD INSTRUMENT STATE: Mode = Default
- GEN:
- FUNCTION: Voltage = 0.707V
- ANLR:
- INSTRUMENT: Channels = 1&2
- INSTRUMENT: Ch1, Ch2 Imped = 600Ohm
- FREQ / PHASE: Meas Time = Precision
- FILTER: CCIR wtd, CCIR unwtd, A Weighting
- FUNCTION: RMS & S/N, Q Pk & S/N
- FUNCTION: S/N Sequ = ON
Measurement The following filter/detector combinations need to be measured:
CCIR-Weighted / Quasipeak
CCIR-Unweighted / RMS
A-Weighted / RMS
The data sheet values need to be checked.