User's Manual
Nexus FT PCBA Connections
044-05251 Rev C 2-3
FON PCBA
The FON is shown in Figure 2-4 and the LED indicators are listed in Table 2-2.
Figure 2-4 FON LED Indicators
Table 2-2 FON LED Indications
PCBA Connections
The following tables list the connections from the main PCBAs to replaceable units inside the WRH. Table 2-3
lists the connections for a WRH configured for PCS both with and without diversity and Table 2-4 lists the
connections for Cellular with and without diversity.
LED Description
FLI or
F2F
Green LED. Fib
er Line Interface (FLI). Flashing LED indicates the unit is receiving
data over the sub carrier. A steady LED indicates the unit has detected an FLI sub-
carrier, but is not carrying any data
OPER Green LED. Lights up for approximately 5 seconds af
ter the power is switched on.
The LED is dark during the boot process and when it is steadily lit again, it indicates
the unit is ready for operation
FAULT Red LED. Flashes for 15 – 20 seconds after the mains is switched on. W
ill flash for
less serious alarms and be steady for fatal alarms
POWER Yellow LED. Indicates power is present
BOOT Red LED. Steady LED when the control unit bo
ots up (
10 – 15 seconds after the
mains is switched on). Next enters a flashing state for 5 – 10 seconds. If no error is
detected, the LED turns off. If an error occurs, the LED remains on
WLI Green LED. Wire Link Interface. Flashing LED indicates un
it is receiving data over
the subcarrier. A steady LED indicates one of the following: The unit is not currently
receiving any data, the unit is not currently a control station or there is no other node
in the network
DATA Blue LED. Indicates data transmission in the W-net
BATT Green LED. Steady LED indicates battery pack is currently used as power source
CHARGE Yellow LED. Steady LED indicates battery charging
P117