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Cmu-b52 speech codec option, Spectrum due to switching – Atec R-S-CMU200 User Manual

Page 17

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Version 09.00, October 2008

R&S

®

CMU200 Universal Radio Communication Tester

17

Spectrum due to switching

Reference level for full dynamic range

GMSK, RF Attenuation

→ Low Noise

RF 1

+10 dBm to +47 dBm

RF 2

–4 dBm to +33 dBm

RF 4 IN

–22 dBm to 0 dBm

Test method

absolute measurement, max. hold over
several measurements

Filter bandwidth

30 kHz resolution filter, 5 poles

Measurement

at an offset of ±

400/600/1200/1800 kHz

Dynamic range

with offset

≥ 1200 kHz

>72 dB

R&S

®

CMU-B52 speech codec option

Speech decoder output

SPEECH HANDSET OUT

9-pin D-Sub connector

Output impedance

<10

Max. output current

20 mA, peak

Full-range output level

1 V, peak

Speech coder input

SPEECH HANDSET IN

9-pin D-Sub connector

Input impedance

100 k

Full-range input level

low sensitivity
high sensitivity

1.4 V, peak
0.1 V, peak