User Manual

Configuration
RFI-9256 Radio Modem User Manual Page 11 of 96
Front panel modes 2, 3, and 4 all display a bar graph to indicate the level of RSSI, transmit power, and
temperature respectively. The top LED that is lit indicates the current value, if the LED is lit green then the
value shown in Table 3 applies, while if the LED is lit red then the current value is half way between the
listed value in Table 3 and the previous value.
LED RSSI Tx Power Temperature
0
-60dBm +30dBm 60ºC
1
-70dBm +27dBm 50ºC
2
-80dBm +24dBm 40ºC
3
-90dBm +21dBm 30ºC
4
-100dBm +18dBm 20ºC
5
-110dBm +15dBm 10ºC
Table 3: RSSI, Tx Power, and Temperature displays
LED Name Function
0
DTR
The current state of the DTR input on the main port. Red indicates +12V, while green
indicates -12V.
1
DCD
The current state of the DCD output on the main port. Red indicates +12V, while green
indicates -12V.
2
TX Flashes while RS-232 data is transmitted by the radio on the main serial port.
3
RX Flashes while RS-232 data is being received by the radio on the main serial port.
4
RTS
The current state of the RTS input on the main port. Red indicates +12V, while green
indicates -12V.
5
CTS
The current state of the CTS output on the main port.. Red indicates +12V, while green
indicates -12V.
Table 4: Main serial port LED function
3.4.1 Radio Status LEDs
NETWORK LINK
When network link is green it shows that the unit can hear a remote radio that is on the same network and
hopping pattern. Slave radios should show network link constantly, as master radios are constantly
transmitting network synchronization messages. Master radios will only show network link when connected
to a slave in point-to-point, Hayes dial-up mode, or when receiving user data.
In a radio network with a strong signal (better than -90dBm), network link should be predominately green, it
may go red from time to time, but should not go off. A red network link indicator means that the radio has
temporarily lost the remote unit. This should occur infrequently.