RADIOBEACON TRANSMITTER
ND500II (125 WATTS) DOUBLE SIDEBAND - NO VOICE
Page 3-3
15 September 2003
(c)
Remove the two wooden braces securing the
transmitter and carefully remove the
transmitter.
ANCILLARY PARTS
3.5
An ancillary parts kit is provided with
each transmitter. These parts include an AC power
cable, ferrite toroids, a tuning tool and commonly
used hardware/installation materials. An itemized
listing of the ancillary parts kit contents is included in
its packing list.
USER ASSIGNED INFORMATION
3.6
The final configuration of each transmitter
is determined by the user's requirements and
applications. The following user assigned
information must be obtained prior to final assembly
and installation of the transmitter.
3.6.1
CARRIER FREQUENCY
: Determine
the transmitter's assigned carrier frequency.
3.6.2
KEYED TONE FREQUENCY
:
Determine which keyed tone frequency (400Hz,
1020Hz or external) is to be used.
3.6.3
IDENTIFICATION CODE
: Determine
the identification code that has been assigned to the
transmitter. Determine if the programmable filler
space after the last character of the identification
code is to be no tone (CW) or continuous tone
(MCW).
3.6.4
STANDBY CODES
: Determine the code
variation to be transmitter as standby '1', noting that
options consist of increasing one or more of the no-
tone intervals, between characters of the
identification code from 375 milliseconds (3 bits) to
875 milliseconds. When the programmable filler
space after the last character is continuous tone, the
no-tone interval between the last character and the
continuous tone may be increased a similar amount.
3.6.5
MEAN LEVEL OF AC POWER
SOURCE:
Determine the mean RMS voltage level,
of the AC power source, that will be applied to the
transmitter.
PARTS REQUIRED BUT NOT SUPPLIED
3.7
Some parts required to complete the
installation of the subject transmitter are not supplied
with the transmitter. The user must supply these
parts. A specific installation will dictate the parts
required and will normally include the following:
(a)
A suitable 50 ohm RF output coaxial cable,
terminated by a type 'N' coaxial connector at
the transmitter end, is required.
(b)
All external control/monitor wiring must be
provided by the user.
(c)
The 19-inch mounting rack and all external
equipment must be provided by the user.
(d)
A suitable 230 volt AC, 50Hz power plug must
be provided to replace the 115 volt AC male
plug on the AC power cable, supplied in the
ancillary parts kit, when the transmitter is fitted
for 230 volts RMS, 50Hz operation.
PRE INSTALLATION PROCEDURES
3.8
Transmitter assembly must be completed
and the following pre-installation procedures
performed prior to applying power or attempting to
install the transmitter in the mounting rack.
3.8.1
DISASSEMBLY REQUIRED
:
Disassemble the transmitter to the extent required to
gain access to its major assemblies and complete the
pre-installation procedures as follows:
(a)
Remove the transmitter's rear, top and bottom
cover plates by removing attaching hardware
and lifting off the plates.
3.8.2
VISUAL INSPECTION
: Perform a
visual inspection of transmitter interior as follows:
(a)
Ensure all attaching hardware is firmly
tightened.
