![Nautel ND2000A-02x-xx0 Series Скачать руководство пользователя страница 16](http://html1.mh-extra.com/html/nautel/nd2000a-02x-xx0-series/nd2000a-02x-xx0-series_technical-instructions_3530251016.webp)
500 WATT RADIOBEACON TRANSMITTER
ND2000A-02x-xx0
Contents (Page 6)
15 January 2005
TABLE OF CONTENTS
(Continued)
Section
Page
5
TESTING AND ADJUSTMENT
(Continued)
5.4.2.2
Reflected Power Reading ............................................................................................ 5-21
5.4.3
LOW AC VOLTAGE THRESHOLD ADJUSTMENT.......................................................... 5-21
5.4.4
LOW BATTERY VOLTAGE THRESHOLD ADJUSTMENT (DC OPTION INSTALLED). 5-22
5.4.4.1
Low Battery Voltage Threshold Adjustment Pre-requisites......................................... 5-22
5.4.4.2
Determination of Low Voltage Battery Threshold........................................................ 5-23
5.4.4.3
Finalization of Low Battery Voltage Threshold Adjustment......................................... 5-23
5.5
OPERATIONAL
ADJUSTMENT PROCEDURES ............................................................ 5-24
5.5.1
OPERATIONAL
ADJUSTMENT TEST EQUIPMENT ....................................................... 5-24
5.5.2
OPERATIONAL
ADJUSTMENT PRE-REQUISITES ........................................................ 5-25
5.5.3
TRANSMITTER TURN-ON................................................................................................. 5-25
5.5.4
CARRIER
LEVEL ADJUSTMENT...................................................................................... 5-25
5.5.5
MODULATION
DEPTH ADJUSTMENT............................................................................. 5-25
5.6
POST OPERATIONAL ADJUSTMENT PROCEDURES ................................................. 5-26
6 MAINTENANCE
6.1
GENERAL ............................................................................................................................ 6-1
6.2
ELECTRICAL
SCHEMATICS/LOGIC DIAGRAMS ............................................................ 6-1
6.2.1
COMPONENT VALUES ....................................................................................................... 6-1
6.2.2
GRAPHIC SYMBOLS ........................................................................................................... 6-1
6.2.3
LOGIC SYMBOLS................................................................................................................. 6-1
6.2.4
REFERENCE
DESIGNATIONS ........................................................................................... 6-1
6.3
WIRING
INFORMATION ...................................................................................................... 6-1
6.3.1
TRANSMITTER
CABINET WIRING..................................................................................... 6-1
6.3.2
CONTROL/MONITOR PANEL WIRING .............................................................................. 6-1
6.3.3
MODULATOR/POWER
AMPLIFIER MODULE WIRING.................................................... 6-1
6.3.4
EXCITER
MODULE WIRING ............................................................................................... 6-1
6.3.5
POWER
ON/OFF
PANEL WIRING ...................................................................................... 6-1
6.3.6
POWER
SUPPLY
MODULE WIRING.................................................................................. 6-1
6.3.7
B- VDC TO +24 VDC CONVERTER WIRING ..................................................................... 6-1
6.3.8
HARMONIC
FILTER ASSEMBLY WIRING ......................................................................... 6-1
6.3.9
FWD/REFL
POWER PROBE WIRING ................................................................................ 6-1
6.3.10 BATTERY
CONTROL PANEL WIRING............................................................................... 6-2
6.3.11 INTERFACE
PANEL ASSEMBLY WIRING ......................................................................... 6-2
6.4
MECHANICAL
DRAWINGS ................................................................................................ 6-2
6.5
SCHEDULED
MAINTENANCE............................................................................................ 6-2
6.6
CORRECTIVE
MAINTENANCE .......................................................................................... 6-2
6.7
ISOLATION OF DEFECTIVE POWER MOSFETS............................................................. 6-2
6.7.1
ISOLATION OF DEFECTIVE POWER MOSFETs IN A POWER AMPLIFIER .................. 6-2
6.7.2
CHECK OF POWER MOSFET IN MODULATOR ASSEMBLY.......................................... 6-3
6.7.3
ISOLATION OF DEFECTIVE POWER MOSFETs IN RF DRIVE AMPLIFIER ASSY ....... 6-4
6.7.4
CHECK OF POWER MOSFET IN DC-DC CONVERTER ASSEMBLY ............................. 6-5
6.8
POWER
MOSFET REPLACEMENT ................................................................................... 6-6
6.8.1
POWER MOSFET REPLACEMENT ON POWER AMPLIFIER ASSEMBLIES................. 6-6
6.8.2
POWER MOSFET REPLACEMENT ON MODULATOR ASSEMBLIES............................ 6-7
6.8.3
POWER MOSFET REPLACEMENT ON RF DRIVE AMPLIFIER ASSEMBLIES.............. 6-8
6.8.4
POWER MOSFET REPLACEMENT ON DC-DC CONVERTER ASSEMBLIES ............... 6-8