Table of Contents
SECTION I
INTRODUCTION
Introduction................................... 1-1
GeneralDescription ............................ 1-1
ACPowerDistribution........................ 1-1
TransmitterControlSystem.................... 1-1
DisplayPanel ............................... 1-1
FaultIndicators.............................. 1-1
MainController.............................. 1-1
SlaveControllers............................. 1-1
50 Volt Power Supplies ....................... 1-3
RFAmplifierModules........................ 1-3
VisualSignalFlowPath....................... 1-3
AuralSignalPath............................ 1-5
TransmitterOutputNetworks................... 1-6
Specifications................................. 1-6
SECTION II
INSTALLATION
Introduction................................... 2-1
InstallationPlanning............................ 2-1
SpaceRequirements.......................... 2-1
Weights.................................... 2-1
RFSystemLayout ........................... 2-1
AirSystem.................................. 2-1
ElectricalPower............................. 2-1
CircuitBreakerSelection...................... 2-2
StartingSurgeRequirement.................... 2-2
Power Input Isolation ......................... 2-2
DisconnectLocation.......................... 2-2
UnpackingandEquipmentInventory .............. 2-2
InventoryandInspection ...................... 2-2
EquipmentRequiredforUnloading.............. 2-2
CabinetPlacementandLeveling.................. 2-3
Grounding.................................... 2-3
Installation of 50 Volt Supplies ................... 2-3
TapTransformers............................ 2-4
RFOutputCoax............................... 2-4
PrimaryWiring................................ 2-4
Inter-cabinetWiring............................ 2-4
InputSignalWiring ............................ 2-4
InterlocksandInterfaces......................... 2-4
ExternalInterlock:TB1-1,2.................... 2-4
FailsafeInterlock:TB1-3,4..................... 2-5
External Blower Control:
TB4-1,2(locatedinbottomofcontrolcabinet).... 2-5
RemoteControlI/O:.......................... 2-5
TransmitterCheckOut.......................... 2-7
ControlCabinetPre-OperationalCheckOut....... 2-7
PACabinetPre-OperationalCheckOut .......... 2-7
Module Installation........................... 2-8
ControlSystemCheckOut..................... 2-8
VSWRFoldbackAndVSWRFaultCheckOut.... 2-9
InitialApplicationofRFPower................... 2-9
Visual...................................... 2-9
Aural..................................... 2-10
SECTION III
OPERATION, CONTROLS, AND INDICATORS
ControlCabinet................................ 3-1
CabinetCircuitBreaker ....................... 3-1
FrontPanelPushbuttonSwitches ............... 3-1
FaultStatusIndicators......................... 3-1
UserDisplayPanel........................... 3-2
DetailedScreenDescriptions:................... 3-4
ExciterSwitcher(Optional) ................... 3-13
AGCModule................................. 3-14
Phase and Gain Module ........................ 3-15
ExciterOperation ............................. 3-17
ControlsandIndicators....................... 3-17
PACabinets.................................. 3-17
CircuitBreakers............................. 3-17
SlaveController............................. 3-17
RFPAModuleLEDDisplay.................. 3-18
50 Volt Power Supplies ...................... 3-18
Operation.................................... 3-18
TurnONSequence.......................... 3-18
TurnOFFSequence ......................... 3-18
PowerRAISE/LOWER....................... 3-19
SECTION IV
THEORY OF OPERATION
Introduction................................... 4-1
RFCircuits ................................... 4-1
Exciter..................................... 4-1
ExciterSwitcher(optional)..................... 4-1
Hybrids .................................... 4-1
AGC Module................................ 4-2
Phase and Gain Module ....................... 4-2
Preamp..................................... 4-3
Cabinet-LevelSplitterAndCombinerCircuits..... 4-3
ControlCircuits.............................. 4-4
Basler50VoltDCPowerSupply ................. 4-8
SECTION V
MAINTENANCE
Introduction................................... 5-1
AirFilterReplacement.......................... 5-1
AirSwitchAdjustment.......................... 5-1
Cleaning...................................... 5-3
FanMotorCurrents............................. 5-3
MotorLubrication.............................. 5-3
CheckConnections............................. 5-3
InspectMOVs................................. 5-4
RecommendedTestEquipment................... 5-4
Annual and Leap Year Clock Adjustment ........... 5-4
RFPowerMeasurements........................ 5-4
Through-LineMeters ......................... 5-4
CalorimetricMeasurements .................... 5-4
Visual Peak-Sync to Average Power Conversion For-
mulas...................................... 5-5
PowerCalibrations............................. 5-5
Directional Coupler Alignment.................. 5-6
PeakDetectorBias........................... 5-6
ReflectedPowerPeakDetectorCalibration........ 5-6
VisualRFPowerCalibration..................... 5-6
iv 888-2365-001 02-24-97
WARNING: Disconnect primary power prior to servicing.