Four BNC connectors provide the inputs and outputs for IF signals (option CMU-B17). The BNC shield of all these connectors is connected to GND.
IF3 Connectors
The remaining specifications are as follows:
| Connector | Function |
| IF3 RX CH1 IN | IF input, RX path, f= 7,68 MHz or 10,7 MHz; max level +2 dBm PEP; impedance 50 Ohm |
| IF3 RX CH1 OUT | IF output, RX path, f= 7,68 MHz or 10,7 MHz; max level +4 dBm PEP; impedance 50 Ohm |
| IF3 TX CH1 IN | IF input, TX path, f= 15,36 MHz or 13,85 MHz; max level +3 dBm PEP for WCDMA, max level –5 dBm for GSM; impedance 50 Ohm |
| IF3 TX CH1 OUT | IF output, TX path, f= 15,36 MHz or 13,85 MHz; max level +3 dBm PEP for WCDMA, max level –5 dBm for GSM; impedance 50 Ohm |