ITB ARCHIMEDE 3000, Руководство по эксплуатации

Страница: 18 / 40

Italian Technology of Broadcast
User's Manual
ARCHIMEDE 3000 AR
432
Page 18 of 40
LCD DISPLAY ALARM SCREENS
FORWARD ALARM (PWR)
When the “PWR” is above 105% of rated power the “PWR” led on the led board starts blinking and the CPU will
start to reduce the bias voltage of the MOSFET to bring the output power back to the nominal level. If the “PWR”
does not return within normal ranges, but will exceed the threshold of 110%, the “CPU” will begin the
standby process and the display will show the written
A l a r m
P W R l i m i t a t i o n
After some seconds the “CPU” will restart the start up sequence. If at the end of the sequence the “PWR” is
inside the limit the transmission will continue ,otherwise it will fall back into the alarm cycle.
Warning: If the alarm cycle is repeated for 5 times in a few hours the Amplifier will stop.
To restart the Amplifier turn off for some seconds the main power supply 230 Volt and then turn it on.
REFLECTED ALARM (SWR)
When the “SWR” is above 7% of rated power the SWR led starts blinking and the third line “ REF. POWER
ALARM” will appear on the display
A R C H I M E D E 3 0 0 0
O U T P O W E R . . . . W A T T
R E F P O W E R A L A R M
H S x x ° C I n x x ° C
If the “SWR” does not return within normal ranges, but will exceed the threshold of 10%, the “CPU” will begin
the process of standby and the display will show the written
A l a r m
S W R l i m i t a t i o n