Specifications

APPLICATION NOTE

Using the SUTRON RADAR LEVEL CONTROLLER (RLR-0002-1) with a MULTI-MODEM GPRS

(Wireless Modem MTCBA-G-F4)

Once the Modem has been activated, it needs to be powered up, hooked up to the antenna,

configured and tested.

Requirements:

• MTCBA-G –F4 Modem

• SIM card

• RS-232 cable (15 to 9 pin)

• Power supply

• Antenna

• PC running Windows

The GSM modem comes with six LEDs indicators in the front panel. These LEDs indicate the

operating status of the GSM modem which makes them very helpful when we are testing the

GSM modem.

LED Indicators

TD Transmit Data. Lit when modem is transmitting data.

RD Receive Data. Lit when modem is receiving data.

CD Carrier Detect. Lit when data connection has been established.

LS Line Status.

Continuous “on” state indicates that the wireless modem is not registered on the network.

Flashing state indicates registration on network. Off state. Modem is off (not ready) or in download

mode.

TR Terminal Ready. Commonly called “Data Terminal Ready.” This is a readiness signal from the PC.

PWR Power. Indicates presence of DC power when lit.

2.2.1 Insert SIM card

Insert the SIM card into the SIM card slot.

2.2.2

2.2.3 Powering and connecting the modem

Power: Plug the power supply into the modem (via

2.5mm miniature power jack).

Antenna: Connect a suitable antenna to the SMA

connector.

Serial Cable: Connect both sides of the serial and

control cable (15-pin Sub D connector on the modem

side)