500 WATT RADIOBEACON TRANSMITTER
ND2000A-02x-xx0
Page
4-1
15 January 2005
SECTION 4
OPERATING
INSTRUCTIONS
GENERAL
4.1
This section provides the information
required to place the subject transmitter in operation.
Normally, the transmitter will not be attended during
use.
EMERGENCY SHUTDOWN PROCEDURE
4.2
There are no special precautions to be
taken if an emergency shutdown is required. Switch
off ac power by placing
POWER - AC LINE
switch
A6S1 to its
OFF
position or turn off ac power source
at the service entrance. If a battery is being used as
the transmitter's dc power source, set
POWER -
BATTERY
switch A6S2 to its
OFF
position.
CONTROLS AND INDICATORS
4.3
The following paragraphs list assemblies
that contain controls and indicators, identify
illustrations that depict their location and markings
and reference tables that describe their purpose and
function.
4.3.1
CONTROL/MONITOR
PANEL
CONTROLS AND INDICATORS:
Figures MD-2
and MD-3 depict the controls and indicators on
control/monitor panel A1. Table 4-2 is keyed to the
reference designation assigned to the controls/
indicators and explains their function.
NOTE
TEST-Power/Mod
meter's RF Kilowatts scale is a
square law scale. Resulting non-linearity makes it
difficult to read less than 100 watts. Any reading that
is less than fifty percent of the 100 watt mark is less
than 25 watts.
4.3.2
RF POWER MODULE CONTROLS
AND INDICATORS:
Figures MD-4 thru MD-12
depict the controls and indicators on RF power
modules A2/A3 and their associated assemblies.
Table 4-3 is keyed to the reference designation
assigned to the controls/indicators and explains their
function.
4.3.3
EXCITER MODULE CONTROLS
AND INDICATORS:
Figures MD-13 to MD-21
depict the controls and indicators on exciter modules
A4/A5 and their associated printed wiring boards/
assemblies. Table 4-4 is keyed to the reference
designation assigned to the controls/indicators and
explains their functions.
4.3.4
POWER ON/OFF PANEL CONTROLS
AND INDICATORS:
Figure MD-22 depicts the
controls and indicators on power on/off panel A6.
Table 4-5 is keyed to the reference designation
assigned to the controls/indicators and explains their
functions.
4.3.5
POWER SUPPLY MODULE
CONTROLS AND INDICATORS:
Figure MD-23
thru MD-28 depict the controls and indicators on
power supply modules A7/A8. Table 4-6 is keyed to
the reference designation assigned to the controls/
indicators and explains their function.
4.3.6
HARMONIC FILTER CONTROLS:
Figures MD-30 through MD-33 depict the controls of
harmonic filter assembly A9. Table 4-7 is keyed to
the reference designation assigned each control and
explains their function.
4.3.7
MONITOR PWB CONTROLS AND
INDICATORS:
Figures MD-34 and MD-35 depict
the controls and indicators on the monitor PWB A10.
Table 4-8 is keyed to the reference designation
assigned to the controls/indicators and explains their
function.
4.3.8
BATTERY PANEL CONTROLS AND
INDICATORS:
Figure MD-36 depicts the controls
and indicators on battery panel assembly A11. Table
4-9 is keyed to the reference designation assigned to
the controls/indicators and explains their function.
