Campbell Scientific RF310, RF312, RF313 Narrowband Radios - Manual (Page 30)

Section 3. Radiotelemetry Network Components
3-8
as voice transmissions on the same carrier frequency. All noise level indicators
are within acceptable bounds in this example.
The "T" command should now be used to reset the SOL modem to the Wait
Mode of operation. This step should not be done if further calls are going to be
made through a phone modem.
3.1.8 RF310M Connections
The 9-pin Serial I/O connector is normally used to connect the RF310M to the
datalogger, PS512M or CH512R. Table 3-4 describes the 9-pin connections.
The 10-pin rectangular connector is for connection to the transceiver.
TABLE 3-4. RF310M Serial I/O to Datalogger Connector Description
Pin Description
1 +5 V: Supply from external source
2 GND: Ground
3 Ring: Ring to datalogger
4 RXD: Transmit from RF310M
5 ME: Modem Enable from datalogger
6 Printer Enable: Not used
7 Unload Enable: Not used
8 Tape Enable: Not used
9 TXD: Received by RF310M
3.2 RF310 Radios
3.2.1 Radio Description
The RF310 and RF312 radios are compatible with the RF310M RF modem and
the RF310B base station. The RF310 and RF312 radios differ only in the
carrier frequency range. The RF310 is a VHF radio and the RF312 if a UHF
radio. References to the RF310 generally apply to the RF312.
The RF310 is used in Campbell Scientific's RF applications to transmit and
receive data blocks. The radios are shipped from Campbell Scientific secured
on a mounting bracket designed to fasten on the top of the RF modem (see
Figure 3-3).
The mounting bracket also supports a BNC Jack connector from the radio. The
coax cable that is required to connect the radio to its antenna should be
connected to the radio at this BNC connector. See Section 3.3 for more
information on the antenna cable.
The RF310 Radios are connected to the RF modem by a special radio cable.
The 9-pin connector has a red and black wire coming out of the connector. The
9-pin connector should be connected to the radio. The red and black power
wires should be connected to 12V and Ground respectfully. The 10-pin
connector should be connected to the RF modem.