Campbell Scientific RF500M Radio Modem - Manual (Page 8)

Section 2. Radiotelemetry Network Components
The light located between the Transceiver port and the RS-232 port is used
primarily to indicate when the radio is transmitting and receiving by blinking
red and green. The light located between the RS-232 and CS I/O ports is used
primarily to indicate when data is transmitted between the datalogger and
RF500M modem by blinking red and green.
2.1.1.1 Specifications
Power
Voltage:
7 to 20 Vdc
Current: Active: <15 mA
Quiescent: <350 μA
Physical
Dimensions: 6 5/16” x 3 11/16” x 7/8”
160 x 95 x 22 mm
Weight: .4 lb
.18 kg
2.1.2 RF500M States
The RF500M modem can operate in several different states depending on the
configuration applied using Device Configuration Utility. The RF500M CS
I/O port can be utilized in either the datalogger communication SDC
(Synchronous Device Communication) state with SDC address 7, 8, 10, or 11
or in the PC to RF base state. The RS-232 port can be used in either the PC to
RF base state, the RS-232 digital radio connection state, or the RF500M to
datalogger state. The proper state must be determined and configured before
deploying the RF500M in the field. Device Configuration Utility is used to
change and apply the settings for the RF500M.
2.1.3 Setting the RF Address
Each RF500M, including the one used as the RF base, must have a unique RF
Address or RF ID. The RF ID is similar to a phone number. This unique
identifier allows the base station to communicate with a specific field station.
The RF ID can be any number from 1 to 255 and is set using Device
Configuration Utility. The RF500M is shipped with a default RF ID of 1.
When using a phone to RF configuration, the RF500M RF ID
must be set to 255. NOTE
2.1.4 RF500M Modem Lights
The two lights on the front panel of the RF500M have several purposes. The
primary function of the lights is to indicate when data is being received or
transmitted from both the radio and the datalogger.
2-2