User's Manual

Diagnostic LEDs
SH20560,0000126 1908DEC091/1
Amplifier LEDs
There are four amplifier LEDs. They are located on the
side of the amplifier.
The LEDs can be used to determine
□ Is the amplifier powered?
□ Is there an internal failure?
□ Is the radio signal being amplified?
□ Is the amplifier setup causing it to overheat?
□ Is the antenna or its connection path faulty?
The LEDs operate in two states: Start Up and Operation.
After the amplifier is initially powered, the amplifier
strobes through each LED sequentially. This rapid
flashing sequence indicates that the internal firmware test
sequence is initiated. It checks the power to the unit and
the integrity of internal components.
The outcome of a successful startup test sequence results
in only the PWR LED on. The outcome of an unsuccessful
startup sequence results in the PWR LED and any of the
red LEDs on. These red LEDs indicate a failure.
During normal operation after a successful startup, each
amplifier LED has a specific meaning.
Power LED Indicates that the amplifier has DC power.
TX LED Indicates that an RF signal is being actively
amplified and transmitted. This light blinking indicates
normal function.
O/T LED Indicates that the unit has exceeded its internal
temperature limits. When this light is on, the unit with
cease amplification. This allows the unit to cool and
prevents permanent damage.
PUPC000031 —UN—07DEC09
Amplifier LED
VSWR LED Indicates that the antenna path is faulty.
When this light is on, the unit will cease amplification. This
prevents the output power from being reflected back into
the amplifier and causing permanent damage.
252
121509
PN=29