R&S^®GC128 GSM Communication Unit

The central part of the R&S® GC128 is the mainboard. It consists of the processor, the power supply, a DC filter and, in the standard version, one Siemens MC35 GSM module. Three more slots are available for integrating further modules for audio transmission and/or for data multilink. With its wide input power range from 9 V to 30 V DC, the R&S® GC128 is ideal for integration into vehicles. The bench power supply, included as a standard accessory, also allows the unit to be powered using 100 V to 240 V AC at 50 Hz to 60 Hz. All permanently installed connectors are located at the rear of the unit, including the ANTENNA connector, where up to four GSM antennas can be connected, and the four interfaces DATA CHANNEL1 to DATA CHANNEL4 for connecting the GSM modules with the router. Each installed GSM module requires a separate antenna. The power supply connector and the interfaces to the process controllers (1× RS-232-C and 1× USB2.0) are also integrated into the rear panel. The control elements are conveniently located at the front panel. They include the main power switch, a loudspeaker, the SIM-card holders, etc. One SIM card is required for each integrated GSM module. To minimize transmission costs, the SIM cards should be obtained from the local network operators, i.e. they are not included in the standard scope of delivery.

For successful operation, the data service must be enabled!

Four LEDs are available for each GSM module. These LEDs provide detailed information about the status of the respective module, e.g. searching for network, incoming call or data transmission in progress. If a module for audio transmission (option R&S® GC128A) is installed, a headset can be connected via the headset connector.