Acom International 1000, User Manual

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Exhibit 8 6 - 17
6
N O T E
Your amplifier will not work if KEY-IN is not connected properly.
Transceiver producers give different names to this output and they are for instance TX-GND, SEND, T/R-LINE, etc.
Some transceivers require that "ground on transmit" is implemented via a software command, or by changing the setting
of a switch on the rear panel, or interior of the transceiver. Check your transceiver's manual.
e) The KEY-OUT socket on the rear panel provides an extra control signal from the amplifier to the transceiver. It could
be used to improve the transmit/receive switching safety.
If your transceiver has a suitable input that disables transmission, we recommend that you connect it with a cable
terminated in a Phono (RCA) connector to the KEY-OUT socket of the amplifier. Transceiver producers give different
names to this input and they are for instance TX-INHIBIT, MUTE, LINEAR, etc. Check your transceiver's manual or
consult your dealer.
If your transceiver does not have such input, don't worry - the amplifier will function normally, as well and then the KEY-
OUT may remain unused.
f) Preparation of wall outlet for the amplifier.
W A R N I N G
If your amplifier is only fitted with one mains fuse, it is suitable for 0-220...240 VAC electricity supplies ONLY (these
supplies are standard in the European Community). Your dealer will check that your amplifier is correctly fused before it
is shipped to you. Customers should check with a qualified electrician if the amplifier is to be used outside the country in
which it was purchased.
Due to the different standards in different countries, the mains plug is supplied and mounted by the dealer. He connects
to the mains cord end a standard mains supply plug which meets the Safety Class I units standard in your country. The
ground lead of the amplifier's power cord is colored yellow with two green stripes and the blue and brown leads are
active. When the amplifier is to be used with only one mains fuse, it is connected in series with the brown lead, which
must be the active. If you have any doubts about the correct way of connecting the wires, consult your dealer.
W A R N I N G
Before connecting the amplifier to your mains supply, be sure that the supply is correctly wired, and is adequate for the
current drawn by the amplifier (up to 10A). Make certain that the grounding lead is connected properly in the wall outlet
for the amplifier.
It is preferable that you use the wall outlet closest to the source. The installation leads should be at least 1.5mm2 (AWG
15 or SWG 17). Check if the respective fuses can handle current up to 10A, as well, as if the voltage corresponds to the
voltage for which the amplifier is set (S.2-2). If you connect the amplifier to a different mains outlet, be sure that you
check it, too.
Make sure the main Power Switch on the rear panel is in OFF position and insert amplifier's mains plug into the wall
outlet prepared for it. The amplifier remains switched off.
2-5. Installation of External Fan
This fan (Fig. 2-1) is not necessary in SSB and CW modes, nor in continuous carrier modes (RTTY, SSTV etc.) with
carrier down times of maximum 15 minutes and a subsequent pause of 3 minutes. For higher duties or ambient
temperatures the fan is recommended. The auxiliary fan (92x92mm) must be brushless type, 2...5W/24VDC. It may be
installed by your dealer or by the manufacturer on request.
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 very 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