11
4. OPERATION
Operation of the amplifier is simplified due to the TRI tuning aid, Auto-Operate function, and automatic
protection system, so youll be able to begin using it immediately after the installation. However, to
make full use of amplifiers potential and to fully configure it to your local conditions, we recommend
that you thoroughly read the following information.
There are 14 ON LINE information screens, which can be selected by pressing repeatedly the NEXT
or PREV buttons (see fig.3-2). Their purpose and method of use are described in the next five sections
4-1 through 4-5.
4-1. Turning ON and OFF
In order to turn on the amplifier, while the Main Power Switch (located on the rear panel) is on, press
the red ON/OFF button (on the front panel right-bottom corner) and hold it on for about 1 second.
The LCD backlight will light and the ON/OFF LED indicator above the button will change from red to
green. Youll hear the blower start first at high speed, then slow down.
After successfully passing the initial self-tests, the ON/OFF LED begins flashing green while the following
inscription on the LCD remains lit:
WARMING UP: nnn s
(nnn above is the number of seconds remaining to readiness for operation)
A tube warm-up period of 2.5 minutes follows. During this time the amplifier remains in standby mode,
so you can continue operating with the transceiver.
Pressing either the PREV or NEXT buttons during this period will result in changing the screen to one
of the 14 available information screens described in S.4-4 below. This action will not influence the
warming-up process, so you may pass through all information screens, for instance to monitor the High
Voltage value or the Exhaust Air temperature. You can also return to the old one to see how many
seconds are still needed for the tubes heater.
N O T E
When you intend to have a short operating break, it is better to leave the amplifier
in standby mode instead of turning it off. Tube life is shortened by repeatedly turning
on and off the tube heater supply. However, if you unintentionally power-off the
amplifier, it is best to switch it on again immediately. When the pause is short (up to
1 minute) and the cathode is still warm, the warm-up period is shortened significantly,
which reduces the waiting time and prolongs the tubes expected life.
After the indicated period expires, the ON/OFF button stops flashing and lights green constantly. If the
auto-operate function is selected to ON (see S.5-2), the green OPER LED lights too. The last used (one
out of 14) information screen appears on the LCD, for instance: WARMING UP: Ready.
The bargraph on the upper line always indicates the peak forward power (as well as during OFF LINE).
In order to turn the amplifier off press shortly the red ON/OFF button. If you are not going to use the
amplifier for a long time, it is best to turn it off using the Main Power switch (on the rear panel) as well.
To Next Page
Loading...
Need help?
General
