Specifications

5/9/13 888-2857-001 3-7
WARNING: Disconnect primary power prior to servicing.
Section 3 Operation
Platinum VAX-C Series
OUTPUT Green = OK
Amber/Yellow = Warning
Red = Fault
Represents the status of the RF output for the system.
When the transmitter is switched off, the OUTPUT
LED is either off or green, depending on the factory
system setup.
Green: The transmitter is switched on, and the RF
output level is greater than the FWD POWER
THRESH (also called FWD LOW PWR WARNING)
setting.
Yellow: The transmitter is switched on, but the RF
output level is below the FWD POWER THRESH
setting.
Red: The transmitter is switched on, but the RF
output is muted.
Note: In a dual system, the OUTPUT LED for the
inactive (reserve) LPU will be green if the unit is
switched on and not muted. The FWD POWER
THRESH threshold check is not applied to the
inactive LPU.
SYSTEM Green = OK
Amber/Yellow = Warning
Red = Fault
Represents a summary status of the exciter subsystem
of the LPU. This includes the Signal Processor
(including the Modulator, DUC, RTAC) UDC,
Transmitter I/O Board, PFRU, Battery Backup, and
MCU.
MUTE Green = OK
Red = Fault
Indicates that the transmitter is switched on, but the
RF output is presently muted.
Table 3-2 Status LEDs
Status LEDs States Explanation