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5 INSTALLATION AND OPERATION
For security and/or safety, it may be desirable to enclose the
transmitter in a building, and/or to enclose the transmitter and
antenna site with a fence. A grounded metal building and a grounded
metal fence are preferred. If wood or some other absorbent material
such as concrete blocks or brick is used, it must be sealed so that
it cannot absorb moisture. An absorbent structure close to the
antenna will cause the antenna resistance to increase when the
structure absorbs moisture. This will cause the antenna current
to decrease and, in an extreme case, can activate the automatic
shutdown system°
5.1 Transmitter Installation
i.
Mount the equipment according to the Equipment Installation
Manual°
2.
Attach the ground wire from the counterpoise system or offshore
platform to the copper ground lug(s) on the transmitter(s).
Make all connections according to the Equipment Installation
Manual and the 50V Power Supply Schematic, Assembly and the
Transmitter Schematic and Diagram in section 2. DO NOT APPLY
POWER AT THIS TIME.
Connect the jumper on each transmitter TB4 from terminal 1 to
terminal 3.
o
Check that the straps on the power transformer terminal block
TB2 are correct: terminals 1 to 2, 3 to 4 for 115 VAC, terminals
2 to. 3 for 230 VAC.
See drawing for "50 V Power Supply
Schematic"°
6.
If the optional Battery Standby system is installed, place the
ON/OFF switch on the Battery Standby system in the OFF position.
Run the battery cables from TBI terminal 5 (+48V battery) and
terminal 6 (Battery Return) to the storage batteries. Connect
the batteries for 48 volt operation and attach the +48V and
Battery Return cables to the corresponding battery terminals.
7.
If the optional Audio PWB is installed, connect the balanced
audio line input to the two outer screws of the audio line
input protector E2.
NOTE: Do not remove the shield over the Oscillator and Keyer section
unless the transmitter is operating into the dummy load. The large
RF field in the vicinity of the antenna will interact with the
Oscillator and Keyer section creating spurious responses.
SS-800AVS
Southern Avionics
85
Company
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