Hitachi E-Compact Medium Power Series Operation Manual page 40

Uhf digital tv transmitters
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Output High Power
Output Power Zero
Power Amp. OFF
Reduced Power
Reflected Power
Remote Ctrl Failure
ALARM
Remote Mute
RF Load FAN Failure
Too Few Drawers
The Output Power Transmitter outstripped 10% of the maximum power
limit.
The Transmitter has the programmed power, but without power reading
at the output.
Indicates that the ON/OFF switch in the front panel is off.
The Transmitter is not operating at rated power. May occur due to power
loss in one or more Power Amplifier Drawers.
Indicates presence of reflected power at the transmitter's output at the
output of transmitter. Check the current alarm list to list other possible
alarms that could help better assess the situation of the equipment as a
whole. Check the connections of the equipment to filter and filter the
antenna. Get in contact with Hitachi Kokusai Linear's technical support
service.
Indicates communication failure in the Remote Control Drawer.
ALARM DESCRIPTION
Indicates that the equipment output power was remotely reduced to zero.
No measure needs to be taken, as this alarm is intentionally caused by
the system operator.
Occurs when the Dummy Load Module Drawer fan fails and the internal
temperature exceeds 90 °C
Indicates that the Transmitter does not have the minimum number of
Drawers to operate under reduced power condition.
E-Compact Medium Power
40 | 106

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