Acom 1006, Руководство по эксплуатации

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There are 14 "ON LINE" information screens, which can be consecutively selected by pressing 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 right-bottom corner of the front panel) and hold it on for about 1 second. The LCD
back-lighting will light and the ON/OFF LED indicator above the button will change from red to green. You'll
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 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 value of the High Voltage, or the
Exhaust Air temperature. You can also return to the old screen to see how many seconds are still needed for
the tube's 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. By repeatedly turning the heater voltage on and off, the tube life is shortened. 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 tube's expected life.
After the indicated period expires, the ON/OFF button stops flashing and lights green constantly. If the auto-
operate function is enabled (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 shows the peak forward power, even 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.
4-2. Changing Operate and Standby Modes
With the Auto-Operate function disabled (see S.5-2), the OPER button changes two modes alternatively.
When Auto-Operate is ON, the amplifier will be maintained to operate mode by default, unless you use the
OPER button to go to standby intentionally (then Auto-Operate is suppressed temporarily). Pressing OPER
again would go to operate and enable the Auto-Operate again.
4-3. Tuning
Tuning is possible only in operate mode, so press the OPER button in order to illuminate its LED (unless
Auto-Operate is active).
a) Preliminary information.
Tuning the amplifier is a procedure of matching the impedance of the currently used antenna to the optimum
tube load resistance. This will ensure maximum plate efficiency and RF gain at nominal output power, with
minimum IMD.