Installation Of External Fan - Acom 1500 Manual

Your amplifier will not work if KEY-IN is not connected properly.
Transceiver producers give different names to this output, such as TX-GND, SEND, T/R-LINE, PTT,
etc. Some transceivers require that "ground on transmit" be implemented via a software command, or
by changing the setting of a switch on the rear panel or in the interior of the transceiver. Check your
transceiver manual. Consult with your dealer if you are having difficulty.
The switching voltage presented from amplifier KEY-IN socket to the transceiver "ground on transmit"
output does not exceed 13V (positive to the ground). The closed-circuit current is below 5mA.
e) The KEY-OUT socket on the rear panel provides an extra control signal from the amplifier to the
transceiver. It can be used to improve the transmit/receive switching safety. The rating on this output
is very low current, so be certain that the load will not exceed 50VDC when it is open circuit and 20mA
when it is closed.
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 manual.
Your amplifier will function normally if the KEY-OUT remains unused.
f) Preparation of wall outlet for the amplifier.
If your amplifier is only fitted with one mains fuse, it is suitable for the
European Union ONLY.
correctly fused before it is shipped to you, based upon your indicated
location.
amplifier is to be used outside the country for which it was purchased.
Your dealer will fit the correct mains plug for your country, and will check that the
amplifier is correctly set for the mains network applying there. If the amplifier is to
be connected to the mains network in another country, check with your dealer or a
qualified local electrician before use there.
Before connecting the amplifier to your mains supply, be sure that the
supply is correctly wired, and that it is adequate for the current drawn by
the amplifier - up to 16A from 200/240V and 20A from 100/120V. Make
certain that the grounding lead is connected properly in the wall outlet
used for the amplifier.
It is preferable that you use a wall outlet close to the power source. The power cord leads and
associated wiring should be at least 2.5mm
handle current up to 16A (20A for 120VAC) as well, and whether 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 as well.
Make sure the main Power Switch on the rear panel is in the OFF position and insert the amplifier's
mains plug into the wall outlet prepared for it. The amplifier remains switched off at this time.

2-5. Installation of External Fan

This fan (Fig. 2-1) is not necessary in SSB and CW modes, or in continuous carrier modes (RTTY,
SSTV etc.) with a maximum carrier-down time of 15 minutes and a subsequent pause of 3 minutes.
For higher duty cycles such as continuous broadcast or increased ambient temperatures the fan is
8
W A R N I N G
Your dealer will check that your amplifier is
Customers should check with a qualified electrician if the
W A R N I N G
2
(AWG 13 or SWG 15). Check if the respective fuses can
N O T E