9
3. POWER ON, CONTROLS AND INDICATORS
C A U T I O N
Do not turn the amplifier on for at least 2 hours after unpacking it in the room where it
will be used. Pay particular attention when you move it from a very cold into a warm
place - condensation is likely and this could result in damage to the high voltage
circuits. In such a case, wait at least 4 hours. A similar effect can occur after a rapid
warming of the operating room (for instance after switching on a powerful heater in
a cold shack).
C A U T I O N
To avoid damage (not covered under warranty) carefully check that the voltage for
which the amplifier is set corresponds to your mains nominal voltage (see S.2- 2 and
table 2-1).
After following all instructions in S.2, you may turn ON the main power switch marked "LINE" on the rear
panel (Fig.2-1). The LED indicator above the red ON/OFF button located on the front panel must light
red and an inscription "ACOM1500" will appear on the display (Fig.3-1):
Fig. 3-1 ACOM2100 Display and Control
Note that the upper line of the OLED always reads the peak forward power, even in STBY mode. The
2400W scale resolution is 20W per bar. Note too that levels below 50W may be not detected.
In this position (called OFF LINE hereafter), only the micro-controller is operational, while the amplifier
itself is still turned off (and the tube is not powered at all).
Control of the amplifier is accessible during OFF LINE and ON LINE (OPERATION) states, each having
several information screens and control functions (see Fig. 3-2):