Nautel XL12 Manuals

Manuals and User Guides for Nautel XL12. We have 1 Nautel XL12 manual available for free PDF download: Technical Instructions

Nautel XL12 Technical Instructions

Nautel XL12 Technical Instructions (238 pages)

AM BROACAST TRANSMITTER 12 000 WATT SIX PRESET POWER LEVELS

Brand: Nautel | Category: Transmitter | Size: 8.56 MB

Table of Contents

Table of Contents

10
List of Illustrations

19
- General Information
  
  22
- Factory Support
  
  22
- Purpose and Scope of Manual
  
  22
  - Family Tree
    22
  - Purpose of Equipment
    22
- Mechanical Description
  
  22
- Technical Summary
  
  22
- Special Tools and Test Equipment
  
  22
- Glossary of Terms
  
  22
  - Special Tools
    24
- Introduction
  
  22
- Installation
  
  25
- Planning and Site Preparation
  
  25
  - Transmitter Room Requirements
    25
  - Transmitter Dimensions
    25
  - Transmitter Clearances
    25
  - Air Flushing
    25
  - Cooling
    25
  - Heating
    25
  - Work Area
    25
  - Lightning Protection
    25
  - Station Reference Ground
    26
  - AC Power Source
    26
  - Antenna Feed Cable
    26
  - Antenna/Rf Output Disconnect
    26
  - Antenna Tower
    26
  - External Control/Monitor Wiring
    26
  - Electrical Power
    26
  - Nominal Voltage
    26
  - Voltage Stability
    26
  - Power Consumption
    27
  - External AC Switching
    27
  - Antenna System
    27
  - RF Feed Cable
    27
  - External Rf Drive Source
    27
  - Modulating Audio
    27
  - Both Exciters Monaural (Internal or External RF Drive)
    27
  - Both Exciters am Stereo (External RF Drive)
    28
  - One Exciter am Stereo (External RF Drive)/One Exciter Monaural
    28
  - Exciter 'A' am Stereo
    28
  - Safety Interlocks
    28
  - External Electrical Interlock
    28
  - Internal Electrical Interlock
    29
  - Mechanical Safety Interlock
    29
  - Remote Control Circuits
    29
  - On/Off Control
    30
  - Main Exciter Selection
    30
  - Preset Power Level Selection
    30
  - Power Level Adjust Select
    30
  - Differential Input Selected
    30
  - System Reset
    31
  - Alarm Recall
    31
  - Other Remote Controls
    31
  - External PDM (RF) Inhibit Control
    31
  - Rf Performance Monitoring
    31
  - RF Monitor Sample
    31
  - Forward Power Level
    31
  - Reflected Power Level
    31
  - Power Amplifier Volts
    31
  - Remote Alarm Indications
    32
  - RF Stress Current Alarm
    32
  - Filter over Temp Alarm
    32
  - High Reflected Power Alarm
    32
  - RF Power Cutback Alarm
    32
  - RF Inhibit Alarm
    32
  - Standby Exciter Alarm
    32
  - Modulation Protection Alarm
    32
  - Power Module Fault Alarm
    32
  - B+ Power Supply Fault Alarm
    33
  - AC Fail Alarm
    33
  - Power Supply over Temp Alarm
    33
  - Battery Low Alarm
    33
  - External Interlock Alarm
    33
  - Internal Interlock Alarm
    33
  - RF Power Shutback Alarm
    33
  - RF Drive B+ Fail Alarm
    33
  - PDM Failure Alarm
    33
  - RF Drive Fail Alarm
    33
  - Remote Status Indications
    34
  - Remote Control Status
    34
  - RF Pwr on Status
    34
    
    Exciter B Status
    34
  - RF Power Level Status
    34
  - Parts Supplied by Nautel
    34
  - Ancillary Parts
    35
  - Parts Required but Not Supplied by Nautel
    35
  - Surge Protector Panel
    35
    
    Test Equipment and Special Tools
    35
    
    Non-Technical Pre-Commissioning
    36
  - Acceptance of Shipment
    36
    
    Unpacking Instructions
    36
  - Cabinet Pre-Positioning
    36
  - Disassembly Required
    37
  - Visual Inspection
    37
  - Reassembly
    38
  - Installation of Reference Ground Stud
    38
  - Installation of Fan Trays
    38
  - Installation of RF Power Modules
    38
  - Ground Stud Assembly Detail
    38
  - Installation of Main Power Transformer
    39
  - Connection of Power Transformer (A23A1) Wiring
    39
  - Ac Power Connection
    40
  - Installation of Circuit Breaker Enclosure
    40
  - Installation of Rf Feed Cable
    41
  - Installation of External Wiring
    41
  - External Control Wiring
    42
  - RF Performance Monitoring Wiring
    42
  - Alarm/Status Monitor Wiring
    42
  - Audio Wiring
    43
  - External RF Drive Wiring
    43
  - Reassembly
    43
    
    Reference Ground Interconnection
    43
    
    Technical Pre-Commissioning
    45
  - Ac Power Source Variables
    45
  - Main Power Transformer Primary Tap Selection
    45
  - Low Volts Pwr Supply Transformer Primary Tap Selection
    45
  - Primary Winding Taps for A23A1T1
    45
  - Exciter Rf Drive Pwb Options
    46
  - Exciter A's RF Drive PWB
    46
  - Exciter B's RF Drive PWB
    46
  - Internal/External Rf Drive Source
    46
  - Primary Winding Taps for A23A2T1
    46
  - Audio Pass Band Selection
    47
  - Audio Choices
    47
  - Remote Control Choices
    47
  - Differential Inputs
    47
  - Single Ended Inputs
    47
  - Alarm/Status Output Choices
    48
  - Logic False - Open Collector
    48
  - Logic False - +5VDC
    48
  - Grouping of Alarm/Status Outputs
    48
  - Alarm Display Options
    49
  - Continuous Alarm Display
    49
- Commissioning Procedures
  
  50
  - DC Volts Meter Readings
    52
    
    Rf Drive Checks
    53
    
    RF Drive Frequency
    53
    
    RF Drive Symmetry
    53
    
    Balanced RF Amplifier Output
    54
    
    RF Drive Level
    54
    
    Setting Preset RF Power Levels
    55
    
    Modulation Checks
    58
    
    Placing Transmitter On-Air
    59
    
    RF Output with Positive Peak Limiting
    59
    
    Special Adjustment Procedures
    60
    
    Rf Current Level
    61
- Control/Monitor Panel Controls and Indicators
  
  62
- Exciter Panel Controls and Indicators
  
  62
- Rf Drive Tuning Pwb Controls
  
  62
- Rf Drive Stage Controls and Indicators
  
  62
- Ac/DC Power Supply Controls and Indicators
  
  62
- Controls and Indicators 3.1 General
  
  62
- 8-Input Rf Combiner/Filter Assembly
  
  63
- Forward/Reflected Power Probe Assembly
  
  63

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