Campbell Scientific COM310 Voice Communications Modem - Manual (Page 8)

COM310 Voice Communications Modem
2. Specifications
• Bell 212A, CCITT V.21, and V.32BIS compatible
• Full duplex at 9600 and 1200 baud to datalogger
• V.42 LAPM and MNP2-4 error detection/correction
• Hayes AT command set
• RJ-11C telephone jack
• FCC and IC (formerly known as DOC) approval
• Pulse or tone dialing
• Power supply voltage requirement: 12 VDC
• Power supply current drain: 100 μA quiescent, 180 mA active
• Internally switches 12 VDC power to minimize current drain
• Connects directly to CS I/O port of many CSI dataloggers
(for communications and 12V power)
• 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°C to +50°C
• 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
For information regarding the COM310 theory of operation refer to Appendix
A of this manual.
3. Quick Start
This section presents Basic_Voice_2.cr1 an example voice callback/callin
program written to demonstrate functions of the COM310. It can serve as a
starting point from which you build your own application program. Test well
the auto-disconnect capability as you customize the voice code and merge your
measurement sections with the voice code.
To demo the example program, obtain the following items or their equivalent:
1) COM310 (OS01062006.SR or later OS)
2) SC12 Cable
3) CR1000 datalogger
4) 3 inches of thermocouple wire
5) PS100 Power Supply
6) Phone modem for your PC
7) LED in series with 1000 Ohm resistor
8) Analog phone line
Some office phone lines are digital and the COM310 cannot
interface to them. Connect the COM310 to analog phone lines
only. NOTE
You will also need:
1) IBM TM compatible PC with available COM port
2) LoggerNet 3.15 or later installed on PC.
2