Atec R-S-CMU200 - Manual (Page 42)

42 R&S ® CMU200 Universal Radio Communication Tester Version 09.00, October 2008
R&S
®
CMU-B17 I/Q/IF interface option
I/Q interface
Analog I/Q outputs IF → I/Q; TX and RX paths, analog I/Q
output
connector I/Q CH1
I/Q bandwidth 0 MHz to 2.5 MHz
–1 V to +1 V, peak
Max. output voltage range EMF
2 2 Q I
 = 1 V, peak
Output impedance 50 Ω
<2 % I and Q amplitude imbalance
for WCDMA function group <2.5 %
in temperature range +20 °C to +35 °C <4 mV
in temperature range +20 °C to +35 °C
for WCDMA function group <5 mV
Offset voltage
in temperature range +5 °C to +45 °C <8 mV
Analog I/Q inputs I/Q → IF; TX path, analog I/Q input connector I/Q CH1
I/Q bandwidth 0 MHz to 2.5 MHz
–0.5 V to +0.5 V, peak
Max. input voltage range
2 2 Q I
 = 0.5 V, peak
Input impedance 50 Ω
in temperature range +20 °C to +35 °C >40 dB Carrier suppression
in temperature range +5 °C to +45 °C >35 dB
f
I/Q
< 1 MHz >45 dB Sideband suppression
1 MHz < f
I/Q
< 2.5 MHz >40 dB
Analog I/Q inputs I/Q → IF; RX path, analog I/Q input connector I/Q CH1
I/Q bandwidth 0 MHz to 2.5 MHz
–0.5 V to +0.5 V, peak
Max. input voltage range
2 2 Q I
 = 0.5 V, peak
Input impedance 50 Ω
in temperature range +20 °C to +35 °C >35 dB 9 Carrier suppression
in temperature range +5 °C to +45 °C >35 dB 9
f
I/Q
< 1 MHz >45 dB Sideband suppression
1 MHz < f
I/Q
< 2.5 MHz >40 dB
Influence on RF interface
GSM/EDGE measurements
Additional influence on signal quality analog I/Q input and output considered;
for TX and RX paths
Phase error GMSK <3°, peak
<1°, rms
EVM 8PSK <5 %, rms
WCDMA measurements 3GPP FDD, UE test
Additional influence on signal quality analog I/Q input and output considered;
for TX and RX paths
EVM <5 %, rms
RF level uncertainty bypass with I/Q IF OUT, I/Q IN/OUT,
IF IN/OUT
Output level uncertainty at RF 1, RF 2, RF 3 OUT add 0.3 dB to R&S ® CMU200 base unit
specifications
Input level uncertainty of frequency-
selective power meter at RF 1, RF 2, RF 4 IN add 0.3 dB to R&S ® CMU200 base unit
specifications
9 For GSMK modulation and max. input voltage at I/Q inputs.