Campbell Scientific RF500M Radio Modem - Manual (Page 7)

Section 2. Radiotelemetry Network
Components
2.1 RF500M Modem
The RF500M is an interface between the computer and the radio when used at
a base station, and an interface between the radio and the datalogger at a field
station. In a repeater station, the RF500M is an interface between two other
communication stations. The RF500M is an RF modem. LoggerNet will refer
to the RF500M as an RFBase-TD or RFRemote-PB.
2.1.1 Physical Description
There are three ports for interfacing external devices on the front of the
RF500M. The port labeled Transceiver connects to the radio (RF310 series,
RF300 series, or DataRadio DL-3400), the port labeled CS I/O connects to
either the datalogger or to the PC as an RF Base, and the port labeled RS-232
connects to an RS-232 radio or the PC as an RF Base.
FIGURE 2-1. RF500M Modem
2-1