Campbell Scientific COM320 Voice Communications Modem - Manual (Page 18)

COM320 Voice Communications Modem
The COM320 ships with an SC12 cable (9-pin to 9-pin) for connecting
between the modem CS I/O port and datalogger CS I/O port.
The COM320’s communication port is designed to function with
a Campbell Scientific CS I/O port. This is not an RS-232 port.
See Appendix E for the CS I/O port description. NOTE
4.2 Surge Suppressor
If the phone company does not provide surge protection at the datalogger site,
you will need to install some. CSI offers surge protectors in two forms. Item #
6362 is a surge protector with environmental enclosure mounting hardware.
Item # 4330 is the surge protector with no mounting hardware (see Section
6.5).
4.3 Voice Capable Dataloggers
The COM320 is compatible only with the CR800, CR850, CR1000, and
CR3000 dataloggers. They must have an operating system equal to, or greater
than, the following: CR800/CR850 version 7, CR1000 version 16 and CR3000
version 9. It is not compatible with the CR200-series, CR5000, CR7,
CR9000X, or any of our retired dataloggers.
The COM320 supports such functions as program send, data collection, clock
check, voice callback, voice calling, and data callback.
The modem also supports concurrent communications. Dataloggers with
multiple peripherals (COM320, RF450, RF401, MD485, NL115, CR1000KD,
and SC32B) can communicate simultaneously via those peripherals.
4.4 Telephone
A touch-tone phone is normally used to call the COM320 modem. A rotary
phone will work if the programmed voice announcements do not require you to
navigate through the COM320’s menu system.
The COM320 must connect to an analog phone line. Some
office environment PBX phone lines are digital and don’t
interface to an analog modem such as the COM320. Of course,
any phone may be used to call in to or receive callbacks from the
COM320. A touch-tone phone is necessary for input. NOTE
5. Datalogger Voice Programming
The voice code for the datalogger is integrated with the main program. It is
probably advantageous to write your custom voice program and debug it
before adding the measurement part. The example voice callback/callin
program in Quick Start can provide a starting point for your program.
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