Campbell Scientific RF310, RF312, RF313 Narrowband Radios - Manual (Page 20)

Section 2. Assembling the Radiotelemetry Network
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One possible error message is "RF1 Failed to Get Attention." This message
indicates PC208W cannot communicate with the RF310M modem. Check the
following items:
1. RF310B Base Station plugged into computer and wall outlet?
2. RF310B Power Switch turned on?
3. Has PC208W been set up correctly?
4. Is the proper COM port specified in the Setup window?
5. Is the SC12 9-pin cable inside the RF310B connected from the small
circuit board to the RF310M Modem?
6. Is there other software open that uses a COM port?
Another possible error message is "CR10X_1 Failed to Connect" (where
“CR10X_1” is the station name). If this message is given without the previous
message, "RF1 Failed to Get Attention", PC208W did connect with the RF
modem but not the datalogger. In this case, check the following items:
1. Are the radios plugged in to the RF modems?
2. Are the radios connected to power?
3. Verify that nothing but an RF modem is connected to the datalogger's 9-pin
connector.
4. Are Station IDs set properly in the RF Modems?
5. Is the RF Path in the Setup Window correct?
6. Are the antennas oriented correctly?
7. Check all antenna cable connections.
8. Turn radio off. Unplug the SC12 9-pin cable from the RF310M in the
RF310B, reconnect the SC12 cable and watch the carrier detect light.
Does the light stay on for one second, off for one second, on for one
second, and then off? If not, the RF310M could have bad RAM or ROM.
Also check the field/repeater station modems.
9. Is the field station datalogger turned on and does it have sufficient power?
VERIFY NEXT ERROR MESSAGE
The error message "RF Modem Does Not Respond" can occur if
communication is not returned to the base station. Check the following items:
1. Are all RF Modems connected to radios and dataloggers?
2. Are the antennas oriented properly?
3. Is the SDC switch open?
4. Is the proper COM port being specified?