SANDEN CORPORATION MDM-GCA1-100 User Manual

 

2

1.Connector(RS-232C,D-SUB 9pin: male plug） 

Pin no. Signal Line  I/O

Signal Name

Function

1

CD 

I 

Reception carrier search

When telecommunication line becomes connection, it is ON.

2

RxD 

I 

Received Data

Data from this device 

3

TxD O  Transmitted 

Data

-

4

DTR O  Data 

Terminal 

Ready

-

5

GND  

-

6

DSR 

I 

Data Set Ready

ON：During operation of this device 
OFF: Telecommunication line is disconnected.

7

RTS O 

Request 

To 

Send

-

8

CTS 

I 

Clear To Send

ON: When device is ready to receive data.

9

RI I 

Ring 

Indicator

RING. Signal of message arrival searched

2.Antenna Connector (R-SMA)                     

Pin no. 

Terminal name

Contents 

1 

TRX

Transmission and Reception Signal

2 SG

Signal 

Ground

 

3. Power supply Connector             

 

 

   

         

4. LED indicator 

 

 

 

 

Pin no. 

Terminal name

Direction of a signal

Explanation

1 VCC

Reception 

signal

DC5.0 

±

 0.25V

2 

PWR

Reception signal

SG: Power OFF(3 seconds more), 

OPEN: Power ON

3 SG

-

Signal 

Ground

DATA Data    in transmission / reception
LINK During communication

PWR/RSSI 

Power on/ Received Signal Strength Indication,   

Received Signal Strength Indicator

 

No１pin: Signal terminal 

No2 pin: SG 

 

DATA  LNK  PWR/RSSI 

9  8  7  6  

5 4 3 2 1 

1  2  3