131
Section 13. Telecommunications and
Data Retrieval
Telecommunications, in the context of CR200(X) operation, is the movement of
information between the CR200(X) and another computing device, usually a
PC. The information can be programs, data, files, or control commands.
Telecommunications systems require three principal components: hardware,
carrier signal, and protocol. For example, a common way to communicate with
the CR200(X) is with PC200W software by way of a PC COM port. In this
example, hardware are the PC COM port, the CR200(X) RS-232 port, and a
serial cable. The carrier signal is RS-232, and the protocol is PakBus®. Of these
three, a user most often must come to terms with only the hardware, since the
carrier signal and protocol are transparent in most applications.
Systems usually require a single type of hardware and carrier signal. Some
applications, however, require hybrid systems, which utilize two or more
hardware and signal carriers.
Contact a Campbell Scientific applications engineer for assistance in
configuring any telecommunications system.
Synopses of software to support the various telecommunications devices and
protocols are found in Section Support Software (p. 143).
13.1 Hardware and Carrier Signal
Campbell Scientific supplies or recommends a wide range of
telecommunications hardware. TABLE. CR200(X) Telecommunications Options
(p. 131) lists telecommunications destination, device, path, and carrier options
wh
ich imply certain types of hardware for use with the CR200(X) datalogger.
Information in TABLE. CR200(X) Telecommunications Options (p. 131) is
conce
ptual. For specific model numbers and specifications, see APPENDIX.
Telecommunications Hardware (Appendix p. 32), contact a Campbell Scientific
appl
ications engineer, or go to www.campbellsci.com.
Table 17. CR200(X) Telecommunications Options
Destination
Device / Portal
Communications Path Carrier Signal
PC / COM or USB Direct Connect RS-232
PDA / COM Port Direct Connect RS-232
PC / COM Port Digital Cellular 800 MHz RF
PC / COM Port Multidrop RS485
PC / Network Card Ethernet / PPP IP
PC / COM Port Spread Spectrum RF 900 MHz RF
Satellite System Satellite Transceiver RF
Digital Display Direct Connect RS-232
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