Campbell COM210, Instruction Manual

COM210 Telephone Modem 

2 

2.  Specifications 

•

Bell 212A, CCITT V.22, and CCITT V.32 compatible 

•

Full duplex at 9600 (default setting) and 1200 baud to datalogger 

•

V.42 LAPM and MNP2-4 error correction 

•

Hayes AT command set 

•

On-board speaker 

•

RJ-11C telephone jack 

•

FCC and IC (formerly known as DOC) approval 

•

Pulse or tone dialing 

•

Current drain:  120 

µ

A quiescent, 160 mA active 

•

Direct connection to and powered by CSI dataloggers 

•

Supply requirements:  12 VDC regulated power supply 

•

Internally switches 12 VDC external power minimizing current drain 

•

Logic levels:  below 1.5 V inputs a low state and above 3.5 V inputs a 
high state.  A low voltage level on the TX data input (pin 9) and RX data 
output (pin 4) represents a mark 

•

Operational temperature:  -25

o

C to +50

o

C standard (Extended operational 

temperature range of -55

°

C to +85

°

C is available at time of purchase.) 

•

Size:  5.2” x 1.7” x 3.6”  //  13.1 x 4.3 x 9.2 cm 

•

Weight:  0.75 lbs  // 0.34 kg 

3.  Installation 

The COM210 is designed to be used with standard analog telephone lines.  It 
will not work with a digital telephone line.  Connection to telephone-company-
provided coin service (central office implemented systems) is prohibited.  
Connection to party line service is subject to state tariffs. 

3.1  Connecting to Datalogger 

Connect the cable from the telephone RJ11C jack to the modem as shown in 
Figure 3.  If the telephone company has not installed surge protection in the 
telephone line (no RJ11C jack), one must install surge protection (CSI item 
number 6362 or 4330) and connect the ring and tip terminal blocks as shown 
in Figure 2.