Hardware Interfaces  CMU 
1100.4903.12 8.16  E-8 
I/Q CH1 Connector (CMU200 with Option CMU-B17 only) 
A 15-pin SUB-D female connector I/Q CH1 provides the inputs and outputs for I/Q signals (option CMU-
B17). The pin assignment is as follows:  
 
I/ Q CH1
1
10
5
15
6
11
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fig. 8-17  I/Q CH1 connector 
 
 
 
Pin  Signal  Input (I) /  
Output (O) / 
Bidirectional (B) 
Description 
1 GND  –  – 
2  MOD_ I_ IN  I  I input, TX path,  
max ±0.5 V, impedance 50 Ohm 
3  MOD_Q_IN  I  Q input, TX path,  
max ±0.5 V, impedance 50 Ohm 
4 GND  –  – 
5  MOD_I_OUT  O  I output, TX path,  
max ±0.5 V, impedance 50 Ohm 
6  MOD_Q_OUT  O  Q output, TX path,   
max ±0.5 V, impedance 50 Ohm 
7 GND  –  – 
8  DEMOD_I_IN  I  I input, RX path,   
max ±0.5 V, impedance 50 Ohm 
9  DEMOD_Q_IN  I  Q input, RX path,   
max ±0.5 V, impedance 50 Ohm 
10 GND  –  – 
11  DEMOD_I_OUT  O  I output, RX path,  
max ±0.5 V, impedance 50 Ohm 
12  DEMOD_Q_OUT  O  Q output, RX path,  
max ±0.5 V, impedance 50 Ohm 
13 GND  –  – 
14 –  –  – 
15 –  –  –