Acom ACOM1000, Manual, Page: 8 / 23

8
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.
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