10
Move the transformer close to the front panel (do not slide it – lift it and move). This will create more space at
the back, so that the high voltage wires can be connected. Plug the two wires from the high voltage power
supply into the 2 pins at the lower part of the transformer. Connect also the 4-way connector and the orange /
black wire. The mating single wire comes from the blower mounted relay and it is orange / black. It is the
only single wire that will mate with the connector.
See Fig. 3 below
.
Figure
3
Move the transformer to the middle position, trying to line up the holes in the transformer with the holes in
the chassis. When the holes line up, pull the amplifier so that it overhangs, about 1/3 on the desk and 2/3 out.
Make sure somebody is helping during this operation. The back of a chair of suitable height can be used to
help support the amplifier, but make sure someone else is holding it firmly in position. Insert the screws and
washers from underneath. When all 4 screws are in, tighten them firmly using a large size Philips screwdriver.
Plug in the 12-way connector.
Connect the 2 mains wires to the terminal block of the soft start module.
See pictures, Fig.1, Fig.2.
Remove the tape securing the cover interlock switch down before installing cover.
Put the cover back and the
installation is complete.
4 INSTALLATION ENVIRONMENT
4.1 Required environment
The DX-3SP amplifier can be operated at an ambient temperature between 0 and 40° Celsius. It should be
installed in a place with good ventilation and protected from the direct sunlight. At least 5 cm (2”of free space
must be left at the left and right of the amplifier for ventilation. Do not place any object on top of the
amplifier, especially above the ventilation opening.
An environment free of dust, smoke and high humidity is required, as for any high powered RF amplifier.
Dust or particles resulting from burning fire wood or coal could be responsible for sparks or electrical
discharges between the capacitor plates, or in other parts of the RF section.
4.2
Power requirements
Single phase, 200, 220, 230 or 240 Vac nominal or 400 Vac (special order)
When operating at full power, up to 37A from the 200 VAC mains is required (even more if tuning is not
correct). Ensure that the AC supply you intend to use is fully rated and properly fused. The Emtron "soft
start" circuitry ensures that there are no momentary surges of current at power-up; therefore the fuse does not
need to be over-rated. However, the wiring of the mains supply for the amplifier should be able to handle the
power at full load with minimal drop in the voltage, to insure the performance of your DX-3SP does not
suffer.
Connect the 4-way connector
and the single wire (O/B).
Connect the high voltage wires