Document Outline

• sect1.pdf
  • SECTION 1 INTRODUCTION AND OPERATION
    • 1.1 SCOPE OF MANUAL
    • 1.2 REPEATER IDENTIFICATION
    • 1.3 MODEL NUMBER BREAKDOWN
    • 1.4 REPEATER DESCRIPTION
    • 1.4.1 TRUNKED SYSTEM
    • 1.4.2 LTR-Net TRUNKED SYSTEM
    • 1.5 LTR-Net SIGNALING
    • 1.6 ACCESSORIES
    • Table 1-1 VIKING VX REPEATER ACCESSORIES
      • 1.7 PRODUCT WARRANTY
      • 1.8 FACTORY CUSTOMER SERVICE
      • 1.9 FACTORY RETURNS
      • 1.10 REPLACEMENT PARTS
      • 1.11 INTERNET HOME PAGE
      • 1.12 SOFTWARE UPDATES/REVISIONS
      • 1.13 REPEATER OPERATION
      • 1.13.1 MAIN PROCESSOR CARD (MPC)
      • 1.13.2 TEST MODE
    • Figure 1-1 ALARM IN TEST MODE
    • Figure 1-2 REPEATER CARDS
    • Table 1-2 ACTIVE REPEATER ALARMS
      • 1.13.3 MAIN AUDIO CARD (MAC)
      • 1.13.4 INTERFACE ALARM CARD (IAC)
      • 1.13.5 POWER SUPPLY
      • 1.14 LTR-Net SYSTEM COMPONENTS
      • 1.14.1 INTRODUCTION
      • 1.14.2 MOBILE TRANSCEIVERS
      • 1.14.3 REPEATERS
    • Figure 1-3 LTR-Net SYSTEM COMPONENTS
      • 1.14.4 SWITCH
      • 1.14.5 CALL PROCESSOR AND SYSTEM and SUBSCRIBER MANAGER
      • 1.14.6 LOCALITY
      • 1.14.7 HOME REPEATER CHANNEL
      • 1.14.8 STATUS REPEATER CHANNEL
      • 1.14.9 MONITOR REPEATER CHANNEL
      • 1.14.10 HOME CHANNEL ALIASING
      • 1.14.11 TELEPHONE INTERCONNECT AND DATA TRANSMISSION
      • 1.14.12 PUBLIC SWITCHED TELEPHONE NETWORK (PSTN)
      • 1.14.13 PRIVATE AUTOMATIC BRANCH EXCHANGE (PABX)
      • 1.14.14 PULSE CODE MODULATION (PCM)
      • 1.15 LTR-Net FEATURES
      • 1.15.1 STANDARD AND SPECIAL CALLS
      • 1.15.2 UNIQUE ID CODES
      • 1.15.3 GROUP IDENTIFICATION CALLS
      • 1.15.4 ALARM FORWARDING TO SWITCH
• sect2.pdf
  • SECTION 2 INSTALLATION
    • 2.1 INTRODUCTION
    • 2.1.1 SITE PREPARATION AND ANTENNA INSTALLATION
    • 2.2 ENVIRONMENT
    • 2.3 VENTILATION
    • 2.4 AC POWER
    • Figure 2-1 BATTERY BACKUP CONNECTOR
      • 2.5 BATTERY BACKUP
    • Figure 2-2 TEMPERATURE SENSOR CABLE
      • 2.6 800W POWER SUPPLY
    • Table 2-1 OUTPUT VOLTAGES
    • Table 2-2 OVER VOLTAGE
    • POWER CABLE CONNECTOR AND SCHEMATIC
      • 2.6.1 AC INPUT REQUIREMENTS
      • 2.7 GROUNDING
      • 2.7.1 PROTECTION GUIDELINES
      • 2.8 UNPACKING AND INSPECTION
      • Figure 2-3 RACK MOUNTED REPEATERS
      • Figure 2-4 5-CHANNEL COMBINING SYSTEM
        • 2.9 REPEATER DATA BUS INSTALLATION
        • 2.9.1 MPC DATA BUS SWITCH SETTINGS
      • Figure 2-5 MPC DATA BUS SWITCHES
        • 2.9.2 MPC DATA BUS JUMPER SETTINGS
      • Figure 2-6 MPC JUMPERS
        • 2.10 CONNECTING RECEIVE AND TRANSMIT ANTENNAS
      • Figure 2-7 ANTENNA CONNECTIONS
        • 2.11 CONNECTING AUDIO/DATA LINK TO SWITCH
        • 2.11.1 VOICE LINK
      • Figure 2-8 TERMINAL BLOCK J2
        • 2.11.2 DATA LINK
        • 1. Separate 4-wire link can be used that is similar to that used for voice. The data is then enco...
      • Figure 2-9 MAC DIP SWITCH SETTINGS FOR 4-WIRE LINK
        • 2. A separate RS-232 serial link can be used.
      • Figure 2-10 MAC DIP SWITCH SETTINGS FOR RS-232 LINK
        • 3. The FSK data can be sent over the voice link using a Blank and Burst technique. No separate da...
      • Figure 2-11 MAC DIP SWITCH SETTINGS FOR BLANK AND BURST LINK
      • Figure 2-12 LTR-Net VOICE/DATA LINK
        • 2.12 OCXO DRAWER CONNECTIONS
        • 2.12.1 VIKING VX CONNECTION
      • Figure 2-13 ATTENUATOR SETTINGS
      • Figure 2-14 SINGLE REPEATER INSTALLATION
      • Figure 2-15 TWO REPEATER INSTALLATION
      • Figure 2-16 THREE OR MORE REPEATERS INSTALLATION
      • Figure 2-17 MORE THAN ONE RACK OF LTR-Net REPEATERS
• sect3.pdf
  • SECTION 3 SOFTWARE
    • Figure 3-1 PROGRAMMING SETUP
      • 3.1 INTRODUCTION
      • 3.1.1 PROGRAMMING SETUP
      • 3.1.2 MINIMUM COMPUTER REQUIREMENTS
      • 3.1.3 PROGRAMMING CABLES
    • Figure 3-2 LAPTOP INTERCONNECT CABLE
      • 3.1.4 EEPROM DATA STORAGE
      • 3.1.5 GETTING STARTED
      • 3.1.6 LIMITATIONS
      • 3.2 MISCELLANEOUS SOFTWARE INFORMATION
      • 3.2.1 MINIMUM FREE MEMORY REQUIRED
      • 3.2.2 SOFTWARE INSTALLATION
      • 3.2.3 STARTING THE PROGRAM
      • 3.3 ALIGNMENT SOFTWARE
    • Figure 3-3 REPEATER TEST MENU
      • 3.4 HELP
    • Figure 3-4 PROGRAMMING FLOWCHART
• sect4.pdf
  • SECTION 4 LTR-Net PROGRAMMER
    • 4.1 MENU DISPLAYS
    • Figure 4-1 MAIN MENU
      • 4.2 FILE MENU
    • Figure 4-2 FILE MENU
      • 4.2.1 NEW
      • 4.2.2 OPEN
      • 4.2.3 SAVE AS
    • Figure 4-3 OPEN / SAVE AS / SAVE FILE
      • 4.2.4 SAVE
      • 4.2.5 EXIT
    • Figure 4-4 EDIT PROGRAMMING FLOWCHART
      • 4.3 EDIT
    • Figure 4-5 EDIT MENU
      • 4.3.1 LOCALITY INFORMATION
    • Figure 4-6 LOCALITY CONFIGURAITON
    • Table 4-1 DEFINE REPEATERS PARAMETERS
    • Figure 4-7 ADJACENT LOCALITY DATA
      • 4.3.2 SELECT REPEATER
    • Figure 4-8 SELECT REPEATER
    • Table 4-2 ADJACENT LOCALITY PARAMETERS
      • 4.3.3 REPEATER INFORMATION
    • Figure 4-9 REPEATER CONFIGURATION
    • Table 4-3 GENERAL PARAMETERS
    • Figure 4-10 INPUT ALARMS
    • Figure 4-11 OUTPUT ALARMS
    • Figure 4-12 ALARM MAPPING
    • Figure 4-13 ALARM CROSS REFERENCE
      • 4.3.4 DELETE REPEATER
    • Figure 4-14 DELETE REPEATER
      • 4.4 TRANSFER
    • Figure 4-15 TRANSFER MENU
      • 4.4.1 READ SETUP PARAMETERS
      • 4.4.2 WRITE SETUP PARAMETERS
    • Figure 4-16 HARDWARE PROGRAMMING FLOWCHART
      • 4.5 HARDWARE
    • Figure 4-17 HARDWARE MENU
    • Figure 4-18 HSDB MONITOR
      • 4.5.1 HSDB MONITOR
      • 4.5.2 RECEIVE/TRANSMIT DATA
    • Figure 4-19 REPEATER TRAFFIC MONITOR
      • 4.5.3 RF DATA
    • Figure 4-20 RF DATA
      • 4.5.4 INPUT MONITOR
    • Figure 4-21 INPUT MONITOR
      • 4.5.5 REVISIONS
    • Figure 4-22 REVISIONS
      • 4.5.6 MODE SELECT
    • Figure 4-23 MODE SELECT
    • Figure 4-24 TEST PROGRAMMING FLOWCHART
      • 4.6 TEST
    • Figure 4-25 TEST MENU
      • 4.6.1 EXCITER
      • 4.6.2 POWER AMPLIFIER
      • 4.6.3 RECEIVER
      • 4.6.4 FULL REPEATER
      • 4.7 UTILITIES
    • Figure 4-26 UTILITIES MENU
      • 4.7.1 COM PORT SETUP
    • Figure 4-27 SETUP COM PORT
      • 4.7.2 ALARM DISPLAY
    • Figure 4-28 ALARM MONITOR
      • 4.8 VIEW
      • 4.8.1 STATUS BAR
      • 4.8.2 TOOLBAR
      • 4.8.3 SAVE SETTINGS ON EXIT
      • 4.9 HELP
      • 4.9.1 HELP TOPICS
      • 4.9.2 HELP ON HELP
      • 4.9.3 ABOUT LTR-Net
• sect4.pdf
  • SECTION 4 LTR-Net PROGRAMMER
    • 4.1 MENU DISPLAYS
    • Figure 4-1 MAIN MENU
      • 4.2 FILE MENU
    • Figure 4-2 FILE MENU
      • 4.2.1 NEW
      • 4.2.2 OPEN
      • 4.2.3 SAVE AS
    • Figure 4-3 OPEN / SAVE AS / SAVE FILE
      • 4.2.4 SAVE
      • 4.2.5 EXIT
    • Figure 4-4 EDIT PROGRAMMING FLOWCHART
      • 4.3 EDIT
    • Figure 4-5 EDIT MENU
      • 4.3.1 LOCALITY INFORMATION
    • Figure 4-6 LOCALITY CONFIGURAITON
    • Table 4-1 DEFINE REPEATERS PARAMETERS
    • Figure 4-7 ADJACENT LOCALITY DATA
      • 4.3.2 SELECT REPEATER
    • Figure 4-8 SELECT REPEATER
    • Table 4-2 ADJACENT LOCALITY PARAMETERS
      • 4.3.3 REPEATER INFORMATION
    • Figure 4-9 REPEATER CONFIGURATION
    • Table 4-3 GENERAL PARAMETERS
    • Figure 4-10 INPUT ALARMS
    • Figure 4-11 OUTPUT ALARMS
    • Figure 4-12 ALARM MAPPING
    • Figure 4-13 ALARM CROSS REFERENCE
      • 4.3.4 DELETE REPEATER
    • Figure 4-14 DELETE REPEATER
      • 4.4 TRANSFER
    • Figure 4-15 TRANSFER MENU
      • 4.4.1 READ SETUP PARAMETERS
      • 4.4.2 WRITE SETUP PARAMETERS
    • Figure 4-16 HARDWARE PROGRAMMING FLOWCHART
      • 4.5 HARDWARE
    • Figure 4-17 HARDWARE MENU
    • Figure 4-18 HSDB MONITOR
      • 4.5.1 HSDB MONITOR
      • 4.5.2 RECEIVE/TRANSMIT DATA
    • Figure 4-19 REPEATER TRAFFIC MONITOR
      • 4.5.3 RF DATA
    • Figure 4-20 RF DATA
      • 4.5.4 INPUT MONITOR
    • Figure 4-21 INPUT MONITOR
      • 4.5.5 REVISIONS
    • Figure 4-22 REVISIONS
      • 4.5.6 MODE SELECT
    • Figure 4-23 MODE SELECT
    • Figure 4-24 TEST PROGRAMMING FLOWCHART
      • 4.6 TEST
    • Figure 4-25 TEST MENU
      • 4.6.1 EXCITER
      • 4.6.2 POWER AMPLIFIER
      • 4.6.3 RECEIVER
      • 4.6.4 FULL REPEATER
      • 4.7 UTILITIES
    • Figure 4-26 UTILITIES MENU
      • 4.7.1 COM PORT SETUP
    • Figure 4-27 SETUP COM PORT
      • 4.7.2 ALARM DISPLAY
    • Figure 4-28 ALARM MONITOR
      • 4.8 VIEW
      • 4.8.1 STATUS BAR
      • 4.8.2 TOOLBAR
      • 4.8.3 SAVE SETTINGS ON EXIT
      • 4.9 HELP
      • 4.9.1 HELP TOPICS
      • 4.9.2 HELP ON HELP
      • 4.9.3 ABOUT LTR-Net
• sect5.pdf
  • SECTION 5 REPEATER PROGRAMMING
    • 5.1 OVERVIEW
    • 5.1.1 GETTING STARTED
    • 5.1.2 STARTING THE PROGRAM
    • 5.1.3 USING THE TOOLBAR
    • 5.1.4 LIMITATIONS
    • 5.2 LOCALITY SETUP
    • 5.2.1 General Parameters
    • 5.3 HOW DO I
    • 5.3.1 CREATING A NEW SITE FILE
    • 5.3.2 OPEN AN EXISTING SITE FILE
    • 5.3.3 MODIFY AN EXIXTING SITE FILE
    • 5.3.4 ADD A REPEATER
    • 5.3.5 CHANGE A REPEATER NUMBER
• sect6.pdf
  • SECTION 6 CIRCUIT DESCRIPTION
    • 6.1 RECEIVER
    • 6.1.1 INTRODUCTION
    • 6.1.2 REGULATED VOLTAGE SUPPLIES
    • 6.1.3 HELICAL FILTER, RF AMPLIFIER
    • 6.1.4 FIRST MIXER, CRYSTAL FILTER
    • 6.1.5 IF AMPLIFIER, CRYSTAL FILTER
    • Figure 6-1 RECEIVER BLOCK DIAGRAM
      • 6.1.6 SECOND MIXER/DETECTOR
    • Figure 6-2 U202 BLOCK DIAGRAM
      • 6.1.7 WIDEBAND AUDIO AMPLIFIER
      • 6.1.8 RSSI AMPLIFIER
      • 6.1.9 HIGH STABILITY SYNTHESIZER
    • Figure 6-3 SYNTHESIZER BLOCK DIAGRAM
      • 6.1.10 LOCK DETECT
      • 6.1.11 BUFFER AMPLIFIER
      • 6.1.12 VCO (A006)
      • 6.1.13 ACTIVE FILTER
      • 6.1.14 BUFFER
      • 6.1.15 SYNTHESIZER
      • 6.1.16 BUFFER AMPLIFIER
      • 6.1.17 LOCK DETECT
      • 6.1.18 BUFFER AMPLIFIER
      • 6.1.19 RF AMPLIFIERS
      • 6.2 EXCITER
      • 6.2.1 VCO (A007)
      • 6.2.2 EXCITER VCO AND TCXO FREQUENCY MODULATION
      • 6.2.3 ACTIVE FILTER
      • 6.2.4 BUFFER
      • 6.2.5 HIGH STABILITY SYNTHESIZER
      • 6.2.6 LOCK DETECT
    • Figure 6-4 EXCITER BLOCK DIAGRAM
      • 6.2.7 BUFFER AMPLIFIER
      • 6.2.8 EXCITER SYNTHESIZER
      • 6.2.9 BUFFER AMPLIFIER
      • 6.2.10 BUFFER AMPLIFIER
      • 6.2.11 LOCK DETECT
      • 6.2.12 BUFFER AMPLIFIER
      • 6.2.13 RF AMPLIFIERS
      • 6.3 OCXO DRAWER
      • 6.3.1 INTRODUCTION
    • Figure 6-5 OCXO DRAWER BLOCK DIAGRAM
    • Figure 6-6 OCXO DRAWER FRONT/REAR PANELS
      • 6.3.2 OCXOs, BUFFERS, DIVIDER AND LINE DRIVER
      • 6.3.3 OCXO SWITCHING
    • Figure 6-7 OCXO SWITCHING
      • 6.3.4 OCXO PULSE DETECTION
      • 6.3.5 DELTA F DETECTION
      • 6.4 75W POWER AMPLIFIER
      • 6.4.1 AMPLIFIER/PRE-DRIVER
      • 6.4.2 DRIVER
      • 6.4.3 FINAL AMPLIFIERS
    • Figure 6-8 75W PA BLOCK DIAGRAM
      • 6.4.4 POWER DETECTORS
      • 6.4.5 THERMAL SENSOR
      • 6.4.6 FORWARD/REVERSE POWER DETECT, CIRCULATOR, LOW-PASS FILTER
      • 6.5 160W POWER AMPLIFIER
      • 6.5.1 GAIN BLOCK
      • 6.5.2 DRIVER
    • Figure 6-9 160W PA BLOCK DIAGRAM
      • 6.5.3 FINAL AMPLIFIERS
      • 6.5.4 POWER DETECTORS
      • 6.5.5 FORWARD/REVERSE POWER DETECT, CIRCULATOR, LOW-PASS FILTER
      • 6.6 RF INTERFACE BOARD
      • 6.6.1 POWER CONNECTOR
      • 6.6.2 SIGNAL CONNECTOR (J101)
      • 6.6.3 FAN CONNECTOR (J104)
      • 6.6.4 POWER AMPLIFIER CONNECTIONS
      • 6.6.5 EXCITER CONNECTOR (J102)
      • 6.6.6 RECEIVER CONNECTOR (J103)
    • Figure 6-10 RF INTERFACE BOARD BLOCK DIAGRAM
      • 6.7 800W POWER SUPPLY
      • 6.7.1 FILTER BOARD
      • 6.7.2 POWER FACTOR CORRECTION
      • 6.7.3 MAIN PULSE WIDTH MODULATOR
    • Figure 6-11 POWER SUPPLY BLOCK DIAGRAM
      • 6.7.4 SYNCHRONIZING CIRCUITS
      • 6.7.5 FAN AND THERMAL SHUTDOWN
      • 6.7.6 +15V CONVERTER
      • 6.7.7 +5V CONVERTER
      • 6.7.8 -5V CONVERTER
      • 6.7.9 POWER SUPPLY REPAIR AND ALIGNMENT
      • 1. The +26.5V supply can be adjusted with R174 when any of the following components are replaced:...
      • 2. The +15V supply can be adjusted with R216 when any of the following components are replaced: R...
      • 3. The +5.2V supply can be adjusted with R254 when any of the following components are replaced: ...
        • 6.8 BATTERY BACK-UP MODULE
        • 6.8.1 OPERATION
        • 6.8.2 CHARGER
    • Figure 6-12 NO LOAD CHARGE VOLTAGE vs. TEMPERATURE
      • 6.8.3 REVERSE BATTERY PROTECTION
      • 6.8.4 ENGAGING THE RELAY
      • 6.8.5 OVER/UNDERVOLTAGE SHUTDOWN
      • 6.8.6 BBM FAN CONTROL
      • 6.9 CARD RACK
    • Figure 6-13 BACKPLANE CONNECTORS
      • 6.10 ALARM EXTERNAL CONNECTOR BOARD
    • Figure 6-14 ALARM EXTERNAL CONNECTOR BOARD
      • 6.11 MAIN PROCESSOR CARD
      • 6.11.1 INTRODUCTION
      • 6.11.2 MAIN CONTROLLER MICROPROCESSOR
    • Figure 6-15 U27 BLOCK DIAGRAM
      • 6.11.3 HIGH SPEED DATA BUS MICROPROCESSOR
      • 6.11.4 CHIP SELECT DECODERS
      • 6.11.5 P1 SIGNAL CONNECTOR
      • 6.11.6 J1 COMPUTER CONNECTOR
      • 6.11.7 J2 MEMORY SELECT
      • 6.11.8 J3 BAUD RATE
      • 6.11.9 S2/S3 HSDB SETTINGS
      • 6.11.10 J4 EPROM MEMORY LOADING
      • 6.11.11 J5 HSDB SPEED
      • 6.11.12 J6 WATCHDOG
      • 6.12 MAIN AUDIO CARD
      • 6.12.1 INTRODUCTION
      • 6.12.2 AUDIO/DATA MICROPROCESSOR
      • 6.12.3 RECEIVE AUDIO
      • 6.12.4 RECEIVE SQUELCH CIRCUITRY
      • 6.12.5 RECEIVE DATA CIRCUITRY
      • 6.12.6 RECEIVE AUDIO PROCESSING
      • 6.12.7 VOTER AUDIO
      • 6.12.8 COMPANDOR OPTION
      • 6.12.9 TRANSMIT AUDIO
      • 6.12.10 TRANSMIT AUDIO PROCESSING
      • 6.12.11 TRANSMIT DATA AND CWID PROCESSING
      • 6.12.12 FSK MODEM
    • Figure 6-16 MODEM BLOCK DIAGRAM
    • Figure 6-17 FSK MODEM SWITCH SETTINGS
    • Figure 6-18 RS-232 SWITCH SETTINGS
      • 6.12.13 P101 SIGNALING CONNECTOR
      • 6.12.14 P100 EXTERNAL OUTPUTS
      • 6.12.15 J100 A D LEVEL TEST POINT
      • 6.12.16 J101 SPEAKER/MICROPHONE
      • 6.12.17 J102 LOCAL MICROPHONE
      • 6.12.18 J103 GROUND
      • 6.12.19 J104 EXTERNAL SPEAKER
      • 6.12.20 J105 WATCH DOG
      • 6.12.21 J106 TX DATA PATH
      • 6.12.22 A301 COMPANDOR CONNECTIONS
      • 6.13 INTERFACE ALARM CARD
      • 6.13.1 ALARM FORWARDING TO SWITCH
      • 6.13.2 RELAY OUTPUTS
    • Figure 6-19 4 I/O J1 ALARM OUTPUTS
    • Figure 6-20 4 I/O J2 ALARM OUTPUTS
      • 6.13.3 ISOLATED INPUTS
    • Figure 6-21 S500-S503
      • 6.13.4 ALARM INDICATORS
      • 6.13.5 ALARM FUNCTIONS
      • 6.13.6 P500 SIGNALING CONNECTOR
    • Figure 6-22 ALARM EXAMPLE
      • 6.13.7 P501 EXTERNAL OUTPUTS
      • 6.13.8 J500 A D LEVEL TEST POINT
      • 6.13.9 J501 GROUND
      • 6.13.10 J502 +15V
      • 6.13.11 POWER SWITCH
      • 6.13.12 J505 SQUELCH ENABLE OUTPUT
    • Figure 6-23 MAIN PROCESSOR CARD BLOCK DIAGRAM
    • Figure 6-24 MAIN AUDIO CARD LOGIC BLOCK DIAGRAM
    • Figure 6-25 MAIN AUDIO CARD AUDIO BLOCK DIAGRAM
    • Figure 6-26 INTERFACE ALARM CARD BLOCK DIAGRAM
• sect7.pdf
  • SECTION 7 ALIGNMENT AND TEST PROCEDURES
    • 7.1 OCXO AND TEST EQUIPMENT FREQUENCY STABILITY
    • 7.2 RECEIVER ALIGNMENT
    • 7.2.1 PRE-TEST
    • 1. Preset L201, L202, L203, L204, L206, L223 and L224 tuning screws about 1/4 inch above the top ...
    • 2. Preset L202 and L205 tuning screws so they are just barely above their tightening lock nuts.
      • 7.2.2 VOLTAGE MEASUREMENTS
      • 7.2.3 PROGRAM TUNE-UP CHANNEL
    • 1. Using the PC and software, program the Synthesizer for the Receive channel number.
    • 2. Tune the VCO helical L220 for +4.5V DC ±0.05V on U209, pin 6 or TP2.
    • 3. Alternately tune L223 and L224 in 1/2-turn to 1-turn increments until a voltage is measured on...
    • 4. Retune L223 and L224 for a peak at J201, pin 13.
      • 7.2.4 TCXO FREQUENCY ADJUST
    • 1. Set Y201 (TCXO) for 3.5V DC ±0.05V DC at TP1 (response time is very slow).
      • 7.2.5 VCO TEST
    • 2. The Synthesizer is programmed for 199 channels above the Receive Channel.
    • 3. The voltage on U209, pin 6 (TP2) should be < 7.5V DC.
    • 4. Record the voltage on J201, pin 13 (TP5) ____.
    • 5. The Synthesizer is programmed for 199 channels below the Receive Channel.
    • 6. The voltage on U209, pin 6 (TP2) should be > 2V DC.
    • 7. Record the voltage on J201, pin 13 (TP5) ____.
    • 8. If the voltages recorded in Steps 3 and 6 are not within ±0.2V, tune L224 as required to balan...
    • 9. The Synthesizer is reprogrammed for the Receive Channel.
      • 7.2.6 FRONT END ADJUSTMENTS
    • 1. Set the signal generator to the Receive Channel at a level sufficient to produce an output vol...
    • 2. Tune L204, L205, L206, L201, L202, L203 and L204 for a peak voltage on J201, pin 7 (TP3). Decr...
    • 3. Set the generator to 1000 mV with a 1 kHz tone at ±1.5 kHz deviation (100 mV at the Rx antenna...
    • 4. Tune the Quadrature detector coil Z213 for maximum AC voltage on J201, pin 9 (TP4).
    • 5. Adjust R264 for 387 mV RMS, ±5 mV RMS, on J201, pin 9.
    • 6. Adjust R284 for 2V DC ±0.05V DC on J201, pin 9 (TP4).
    • 7. Measure the distortion on pin J201, pin 9 (TP4) (analog tuning meter is preferred).
    • 8. Tune C207, L209, L211 and L225 for peak voltage on J201, pin 7 (TP3). Decrease the generator o...
    • 9. Repeat Steps 4, 5 and 6.
      • 7.2.7 AUDIO DISTORTION
    • 1. Plug a 16 ohm resistive load at J101 or J104 on the MAC (Main Audio Card).
    • 2. Connect a distortion analyzer to the 16 ohm load.
    • 3. Measure the distortion of the receive audio at J101 or J104 on the MAC with the local volume c...
    • 4. The reading should be less than 3% (typically < 1%).
    • 5. Measure receive sensitivity at J101 or J104 on the MAC.
    • 6. The reading should be < 0.35 mV (typically < 0.25 mV). Optional: Adjust L207, L209, L211, and ...
    • 7. The Synthesizer is programmed for 199 channels above the Receive Channel.
    • 8. The receive sensitivity should be < 0.35 mV (typically < 0.3 mV). Optional: Adjust L204 to bal...
    • 9. The Synthesizer is programmed for 199 channels below the Receive Channel. Optional: Adjust L20...
    • 10. The receive sensitivity should < 0.35 mV (typically < 0.3 mV).
    • Figure 7-1 RECEIVER ALIGNMENT POINTS
      • 7.3 EXCITER ALIGNMENT
      • 7.3.1 PRETEST
      • 1. Set TCXO modulation adjust R425 fully counterclockwise.
      • 2. Connect the power meter to J402.
      • 3. Connect OCXO to J403.
        • 7.3.2 VOLTAGE MEASUREMENTS
        • 7.3.3 PROGRAM TUNE-UP CHANNEL
      • 1. Program the Transmit Channel.
      • 2. Use the "Turn on carrier" button to key the Exciter.
      • 3. Tune VCO helical L404 for 4.5V ±0.05V on U403, pin 6 (TP1).
      • 4. Measure the Power Output of the Exciter at J402. Reading should be +17.5 dBm ±0.5 dB.
      • 5. Use the "Turn on carrier" button to unkey the Exciter.
        • 7.3.4 TCXO FREQUENCY ADJUST
      • 1. Tune TCXO Y401 for 3.5V DC ±0.05V DC at U402, pin 1 (response time is very slow).
        • 7.3.5 VCO TEST
      • 1. The Synthesizer is programmed for 199 channels above the transmit frequency.
      • 2. Use the "Turn on carrier" button to key the Exciter.
      • 3. Measure the voltage on U403, pin 6 (TP1). Voltage should be < 7V DC and the Power Output +17.5...
      • 4. Use the "Turn on carrier" button to unkey the Exciter.
      • 5. The Synthesizer is programmed for 199 channels below the transmit frequency.
      • 6. Use the "Turn on carrier" button to key the Exciter.
      • 7. Measure the voltage on U403, pin 6 (TP1). Voltage should be > 2.5V DC and the Power Output +17...
      • 8. Use the "Turn on carrier" button to unkey the Exciter.
        • 7.3.6 TRANSMIT MODULATION ADJUST
      • 1. Connect a 10 dB pad and modulation analyzer to J402.
      • 2. Press the "FM" and "3 kHz LPF" switches of the modulation analyzer.
      • 3. Inject a 1 kHz sine wave with a level of 400 mV RMS into P100, pin 32 on the MAC. NOTE: This t...
      • 4. Adjust U149 for 707 mV RMS on P100, pin 29. This waveform should be a "clean" sine wave.
      • 5. Use the "Turn on carrier" button to key the Exciter.
      • 6. Set R446 for ±1.5 kHz deviation.
    • Figure 7-2 EXCITER ALIGNMENT POINTS
      • 7. Use the "Turn on carrier" button to unkey the Exciter. NOTE: Ensure that the oscilloscope is "...
      • 8. Adjust U151 for a 2V P-P square wave on P100, pin 29. NOTE: This test changes the TX Data Leve...
      • 9. Use the "Turn on carrier" button to key the Exciter.
      • 10. Set R425 for "best" square wave as observed on the oscilloscope.
      • 11. Use the "Turn on carrier" button to unkey the Exciter.
      • 12. Repeat Steps 1-7. Very little adjustment of R446 should be needed.
        • 7.4 75W POWER AMPLIFIER ALIGNMENT
        • 7.4.1 INTRODUCTION
        • 7.4.2 FORWARD POWER OUTPUT CALIBRATION
      • 1. Connect the: power supply ground lead to P105, +15V DC lead to P103, +26.5V DC lead to P101 an...
      • 2. Connect attenuator and power meter to A8.
      • 3. Set R663 fully counterclockwise.
      • 4. Set R76 on the RFIB fully counterclockwise.
      • 5. Set the signal generator to +16 dBm ±0.1 dB at 937.5 MHz.
      • 6. Use the "Turn on carrier" button to key the PA.
      • 7. Adjust R663 for 85W ±2W (±0.1 dB).
      • 8. Verify that Output 1 is within 20% of Output 2.
      • 9. Use the "Turn on carrier" button to unkey the PA.
        • 7.4.3 PRE-DRIVER POWER LIMIT ADJUSTMENT
      • 1. Set a power reference of 0 dB at 85W.
      • 2. Monitor the Transmit current and RF output level. Use the Up Arrow key to increase the power l...
      • 3. Adjust power limit control R76 clockwise until power is limited to 0.55 dB above 85W (95W). If...
        • 7.4.4 REFLECTED POWER ADJUST
      • 1. Remove the load cable from A8.
      • 2. Use the "Turn on carrier" button to key the PA. NOTE: This will not harm the PA.
      • 3. Adjust Reverse Power Calibration Pot R680 for equal voltages on W126 and W121 on the RFIB or f...
      • 4. Use the "Turn on carrier" button to unkey the PA.
      • 5. Apply "Glyptol" to R663, R680 and R76.
      • 6. Use the “Turn fan on” button to turn on/off fans. Both PA fans should turn ON.
      • 7. Measure temperature detector voltage at W127 on the RFIB. Normal output at 25°C ambient is app...
    • Figure 7-3 POWER AMPLIFIER ALIGNMENT POINTS
      • 7.5 160W POWER AMPLIFIER ALIGNMENT
      • 7.5.1 POWER OUTPUT ADJUSTMENTS
      • 1. Connect the: power supply ground lead to P105, +15V DC lead to P103, +26.5V DC lead to P101 an...
      • 2. Connect attenuator and power meter to A8, the Transmit Antenna Connector.
      • 3. Set R663 on the Forward/Reverse Power Detect board fully counterclockwise.
      • 4. Set R76 on the RFIB fully counterclockwise.
      • 5. Set the generator to +15 dBm ±0.1 dB at 937.5 MHz.
      • 6. Use the "Turn on carrier" button to key the PA.
      • 7. Adjust Forward Power Calibration Pot R663 for 160W ±0.1 dB (±3.5W).
      • 8. Verify Output 1 is within 20% of Output 2 and Output 3 is within 20% of Output 4.
        • 7.5.2 PRE-DRIVER POWER LIMIT ADJUSTMENT
      • 1. Set a power reference of 0 dB at 160W.
      • 2. Monitor the Transmit current and RF output level. Use the Up Arrow key to increase the power l...
      • 3. Adjust power limit control R76 clockwise until power is limited to 0.75 dB above 175W (192W).
      • 4. Use the "Turn on carrier" button to unkey the PA.
        • 7.5.3 REFLECTED POWER ADJUST
      • 1. Remove the load cable from A8.
      • 2. Use the "Turn on carrier" button to key the PA. This will not harm the PA.
      • 3. Adjust Reverse Power Calibration Pot R680 for equal voltages on W126 and W121 on the RFIB or f...
      • 4. Use the "Turn on carrier" button to unkey the PA.
      • 5. Apply 'glyptol' to R663, R680 and R76.
      • 6. Use the “Turn on fan” button to turn on/off fans. Both PA fans should turn ON.
      • 7. Measure temperature detector voltage at W127 on the RFIB. Normal output at 25°C ambient is app...
    • Figure 7-4 160W POWER AMPLIFIER ALIGNMENT POINTS
    • Figure 7-5 RF INTERFACE BOARD ALIGNMENT POINTS
    • Figure 7-6 POWER EXTENDER CABLES
    • Figure 7-7 REPEATER TO CIM TEST SETUP
    • Figure 7-8 160W PA TEST SETUP
    • Figure 7-9 RECEIVER TEST SETUP
    • Figure 7-10 EXCITER TEST SETUP
    • Figure 7-11 75W POWER AMPLIFIER TEST SETUP
      • 7.6 FULL REPEATER ALIGNMENT
      • 7.6.1 PERFORMANCE TEST PROGRAM
      • 1. Select the TEST - FULL REPEATER - ALL TEST and press Enter.
        • 7.6.2 REPEATER SETUP
      • 1. Pretest the MPC, IAC, MAC and RFIB per their individual board level test procedures.
      • 2. Pretest the Power Amplifier, Exciter, Receiver and Chassis per their individual test procedure...
      • 3. Assemble the Transceiver to the Power Amplifier and insert into the chassis along with the Pow...
      • 4. Engage the locking lever of the IAC and turn on the repeater power supply switch (S508) in the...
        • 7.6.3 TRANSMITTER TEST/ADJUSTMENTS
      • 1. Use the "Turn on carrier" button to key the repeater.
      • 2. The Transmit LED on the IAC should turn on to indicate the repeater is transmitting.
      • 3. Use the "Turn on carrier" button to unkey the repeater.
      • 1. Use the "Turn on carrier" button to key the repeater.
      • 2. Check the transmit output power. The power can be adjusted from the computer using the Power C...
      • 3. Use the "Turn on carrier" button to unkey the repeater.
        • 7.6.4 RECEIVER TESTS/ADJUSTMENT
      • 1. Check the receiver injection frequency by using a "sniffer" pickup loop, or RF probe connected...
      • 2. Tune Y201 (TCXO) on the Receiver at TP1 for 3.5V DC ±0.05V (response time is very slow).
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±1.5 kHz deviation.
      • 2. Insert test cables into J100/J103 on the MAC and connect to an AC voltmeter.
      • 3. Adjust R237 for 0 dBm (775 mV RMS).
      • 4. Connect a 16 ohm load and distortion analyzer to J101 or J104 of the MAC.
      • 5. Adjust R236 for 2.8V RMS and measure the distortion. Distortion should be < 3%.
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±1.5 kHz deviation.
      • 2. Connect a 16 ohm load and distortion analyzer to J101 or J104 of the MAC.
      • 3. Adjust R236 for 2.8V RMS.
      • 4. Remove modulation from the RF generator. The measured level shall be £ -45 dB.
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±1.5 kHz deviation.
      • 2. Connect a 16 ohm load and distortion analyzer to J101 or J104 of the MAC.
      • 3. Adjust R236 for 2.8V RMS.
      • 4. 12 dB SINAD reading shall be £ 0.35 mV.
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±1.5 kHz deviation.
      • 2. Connect a 16 ohm load and distortion analyzer to J101 or J104 of the MAC.
      • 3. Adjust R236 for 2.8V RMS.
      • 4. Set the RF generator output for 5 dB SINAD.
      • 5. Adjust R234 on the MAC so the Receiver just squelches.
      • 6. Increase the RF generator output until the Receiver unsquelches. Reading shall be £ 10 dB SINAD.
      • 1. Adjust the RF generator for 100 mV output with a 100 Hz tone at ±800 Hz deviation.
      • 2. Insert test cables into J100/J103 on the MAC and connect to an AC voltmeter.
      • 3. Adjust R235 to achieve 340 mV RMS
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±1.5 kHz deviation.
      • 2. Plug a Speaker/Microphone into J101/J102 of the MAC.
      • 3. Adjust R236 until the 1 kHz tone is heard.
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±1.5 kHz deviation.
      • 2. Connect a 16 ohm load and distortion analyzer to J101 or J104 of the MAC.
      • 3. Adjust R236 for 2.8V RMS.
      • 4. Adjust the RF generator output for 12 dB SINAD.
      • 5. Use the "Turn on carrier" button to key the transmitter.
      • 6. SINAD shall not degrade more than 1 dB; i.e. no less than 11 dB SINAD.
      • 7. Use the "Turn on carrier" button to unkey the transmitter.
      • 1. Signal Displacement Bandwidth
      • 2. Adjacent Channel Rejection
      • 3. Offset Channel Selectivity
      • 4. Intermodulation Rejection
      • 5. Spurious Rejection
      • 6. Audio Response
      • 7. Audio Sensitivity
        • 7.6.5 RECEIVER EXPANDER MEASUREMENT
      • 1. Adjust the RF generator for 100 mV into the receiver with a modulation tone of 1 kHz at ±1.5 k...
      • 2. Insert AC voltmeter probes into J100/J103 on the MAC. AC voltage shall be between 1.1 and 1.25...
      • 3. Adjust RF generator for ±800 Hz deviation. AC voltage shall be between 325 and 450 mV RMS.
      • 4. Adjust RF generator for ±500 Hz deviation. Voltage level shall be between 150 and 250 mV RMS.
        • 7.6.6 TRANSMIT AUDIO/DATA LEVEL ADJUSTMENTS
      • 1. Remove VNC cards if present.
      • 2. Apply a 1 kHz tone at -3 dBm (548 mV RMS) to P100, pin 32 of the MAC.
      • 3. Insert test cables into J100/J103 and connect to an AC voltmeter.
      • 4. Use the "Turn on carrier" button to key the transmitter.
      • 5. Adjust R305 for 0 dBm (775 mV RMS).
      • 6. Use the "Turn on carrier" button to unkey the transmitter.
      • 7. Press F2 to advance to the next screen.
      • 8. Final adjustment must be performed on the customer channel. Apply a 1 kHz tone at +7 dBm (1.73...
      • 9. Use the "Turn on carrier" button to key the transmitter.
      • 10. Adjust U149 with the Level Control buttons to set the maximum allowed deviation at ±1.6 kHz ±50.
      • 11. Use the "Turn on carrier" button to unkey the transmitter.
      • 12. Remove the signal from P100, pin 32.
      • 1. Adjust the RF generator for 100 mV output with a 1 kHz tone at ±800 Hz deviation. Set modulati...
      • 2. Use the "Turn on carrier" button to key the transmitter.
      • 3. Final adjustment must be performed on the customer channel. Adjust R237 on the MAC to achieve ...
      • 4. Use the "Turn on carrier" button to unkey the transmitter.
      • 5. Press F2 to advance to the next screen.
      • 6. Connect an AC voltmeter to J103 and P100, pin 31 (RX_VOICE).
      • 7. Adjust R238 for -3 dBm (548 mV RMS).
      • 8. Remove the RF generator from the Receiver.
      • 1. Remove VNC cards if present. (Set modulation analyzer LPF switch to 3 kHz.) Final adjustment m...
      • 2. Use the "Turn on carrier" button to key the transmitter.
      • 3. Adjust U151 with the Level Control buttons to achieve ±750 Hz ±50 Hz transmit deviation.
      • 4. Use the "Turn on carrier" button to unkey the transmitter.
      • 1. Remove VNC cards if present.
      • 2. Apply a 1 kHz tone at +7 dBm (1.73V RMS) to P100, pin 32 of the MAC. (Set modulation analyzer ...
      • 3. Use the "Turn on carrier" button to key the transmitter.
      • 4. Check for measured deviation out of the modulation analyzer to be ±2.4 kHz +100/-200 Hz.
      • 5. Use the "Turn on carrier" button to unkey the transmitter.
      • 6. Disconnect all cables.
      • 1. Set modulation analyzer LPF switch to 3 kHz. Use the "Turn on carrier" button to key the trans...
      • 2. Deviation should measure between 750 Hz and 1250 Hz.
      • 3. Use the "Turn on carrier" button to unkey the transmitter.
      • 1. Plug a Speaker/Microphone into J101/J102 of the MAC. Set modulation analyzer LPF switch to 3 kHz.
      • 2. Press the microphone PTT and say "four" loudly into the microphone.
      • 3. Deviation should measure ±1.4-1.6 kHz.
      • 4. Release the microphone PTT.
      • 1. On the modulation analyzer press: 300 Hz HPF 3000 Hz LPF FM Pre-Display 750 mS Avg RMS Cal 0.2...
      • 2. Use the "Turn on carrier" button to key the transmitter and measure the Hum and Noise Ratio. T...
      • 3. Use the "Turn on carrier" button to unkey the transmitter.
      • 1. Remove VNC cards if present. On the modulation analyzer select: FM 50 Hz 15 kHz
      • 2. Apply 200 mV RMS at 1 kHz to P100, pin 32 of the MAC.
      • 3. Use the "Turn on carrier" button to key the transmitter.
      • 4. Adjust audio level to produce ±1 kHz deviation.
      • 5. On the modulation analyzer select: 300 Hz 3 kHz 750 ms de-emphasis
      • 6. Distortion should be < 2%.
        • 7.6.7 TRANSMITTER COMPRESSOR MEASUREMENT
      • 1. Set the modulation analyzer LPF to 3 kHz.
      • 2. Apply +7 dBm (1.73V RMS) at 1 kHz to P100, pin 32 on the MAC.
      • 3. Use the "Turn on carrier" button to key the transmitter.
      • 4. Deviation shall be between 1.35 and 1.5 kHz.
      • 5. Adjust 1 kHz signal to -8.2 dBm (300 mV RMS). Deviation shall be between 750 and 850 kHz.
      • 6. Adjust 1 kHz signal to -17.8 dBm (100 mV RMS). Deviation shall be between 450 and 500 kHz.
      • 7. Use the "Turn on carrier" button to unkey the transmitter.
        • 7.6.8 AUDIO/DATA LEVEL ADJUSTMENTS
      • 1. Set MAC S100 and S101, all Sections OFF.
      • 2. Adjust the RF generator for 100 mV modulated with a 1 kHz tone at ±1.5 kHz deviation.
      • 3. Connect a balanced AC voltmeter with a 600 ohm input impedance between balanced lines RXA+ and...
      • 4. Adjust R239 on the MAC for the type of line. Leased Line/Direct Connect (default) -12 dBm (194...
      • 1. Set MAC S100 and S101, all Sections OFF (see Figure 7-12).
      • 2. Inject a 1 kHz tone from a balanced 600 ohm source, at the level determined by the type of lin...
      • 3. Adjust R243 on the MAC to obtain -6 dBm (387 mV RMS) measured at J100/J103.
    • Figure 7-12 S100 SETTING
      • 1. Set MAC S100 Sections 1, 4, 5, 8 OFF; 2, 3, 6, 7 ON; S101 Sections 2, 3, 4 OFF; 1 ON (see Figu...
      • 2. Inject a 1.2 kHz tone from a balanced 600 ohm source, at the level determined by the type of l...
      • 3. Adjust R242 on the MAC to obtain -10 dBm (245 mV RMS) measured at J100/J103.
    • Figure 7-13 S100/S101 SWITCH SETTINGS
    • Figure 7-14 J2 TERMINAL BLOCK (SECONDARY)
      • 1. Set MAC S100, all Sections OFF; S101 Sections 2, 3, 4 OFF; 1 ON (see Figure 7-15).
      • 2. Inject a 1.2 kHz tone from a balanced 600 ohm source, at the level determined by the type of l...
      • 3. Adjust R242 on the MAC to obtain -10 dBm (245 mV RMS) measured at J100/J103.
    • Figure 7-15 SWITCH SETTINGS
    • Figure 7-16 J2 TERMINAL BLOCK
      • 1. Set MAC S100 Sections 1, 4, 5, 8 OFF; 2, 3, 6, 7 ON; S101 Sections 2, 3, 4 OFF; 1 ON (see Figu...
      • 2. Adjust R240 on the MAC to obtain -16 dBm (123 mV RMS) measured at J100/J103.
      • 3. Press F2 to advance to the next screen.
      • 4. Connect a balanced AC Voltmeter with a 600 ohm input impedance between balanced lines RXS+ and...
      • 5. Adjust R241 on the MAC for the type of line used. Leased Line/Direct Connect (default) -12 dBm...
      • 1. Set MAC S100, all Sections OFF; S101 Sections 2, 3, 4 OFF; 1 ON (see Figure 7-15).
      • 2. Connect a balanced AC Voltmeter with a 600 ohm input impedance between balanced lines RXA+ and...
      • 3. Adjust R240 on the MAC for the type of line used. Leased Line/Direct Connect (default) -22 dBm...
    • Figure 7-17 S100/S101 RS-232
      • 1. Set MAC S100, Sections 2, 3, 6, 7 OFF; 1, 4, 5, 8 ON (see Figure 7-17).
      • 2. Set MAC S101, Sections 1, 3, 4 OFF; 2 ON (see Figure 7-17).
        • 7.6.9 REPEATER OPERATION
      • 1. Switch settings on the MPC for RS-485 (new style) operation are shown in Figure 7-18. S002 all...
    • Figure 7-18 NEW HSDB SWITCH SETTINGS
      • 2. Verify that the repeater is programmed for "Stand Alone" mode in Setup Parameters-F4 (see Sect...
      • 3. The repeater is now in Normal Operation mode. Verify by the MPC front panel indicators that no...
      • 1. Switch settings on the MPC for single-ended 5V (old style) operation are shown in Figure 7-19....
    • Figure 7-19 OLD HSDB SWITCH SETTINGS
      • 2. Verify that the repeater is programmed for "Stand Alone" mode in Setup Parameters-F4 (see Sect...
      • 3. The repeater is now in Normal Operation mode. Verify by the MPC front panel indicators that no...
      • 1. Program an LTR, portable or mobile, for the following parameters. Home Repeater - Same as repe...
      • 2. The repeater is now in Normal Operation mode.
      • 3. Key the radio several times on the programmed System/Group. Access should occur every time. (P...
      • 1. The repeater is now in Normal Operation mode.
      • 2. Verify by the MPC front panel indicators that no alarms have occurred (see Table 1-2).
        • 7.7 SWITCH (RNT) INTERFACE
        • 7.7.1 REPEATER SETUP
      • 1. Connect the repeater as shown in Figures 7-7, 7-20 and 7-21.
      • 2. Adjust the repeater for the type of link used for communication back to the CIM in the Switch....
      • 3. Program the repeater for the specified parameters using the Programmer.
        • 7.7.2 CIM SETUP
      • 1. Adjust the CIM for the type of link used for communication back to the repeater. The types of ...
      • 2. Connect the link lines to the Switch and its associated CIM (see Figure 7-21).
    • Figure 7-20 J2 CONNECTOR
    • Figure 7-21 VIKING VX VOICE/DATA LINK
    • Figure 7-22 S100/S101 SWITCH SETTING
      • 7.7.3 VOICE AUDIO TO SWITCH
      • 1. On the MAC, set S100 and S101, all Sections OFF (see Figure 7-22).
      • 2. Connect an RF generator to the receiver.
      • 3. Adjust the RF generator for 100 mV modulated with a 1 kHz tone at ±1.5 kHz deviation.
      • 4. Connect a balanced AC Voltmeter with a 600 ohm input impedance between balanced lines RXA+ and...
      • 5. On the MAC, adjust R239 for the type of line used. Leased Line/Direct Connect (default) -12 dB...
        • 7.7.4 VOICE AUDIO FROM SWITCH
      • 1. On the MAC, set S100 and S101, all Sections OFF (see Figure 7-22).
      • 2. On the CIM (in the Switch) generate an alignment tone (set S5 to "1") (see Figure 7-31).
      • 3. On the CIM, connect a balanced AC voltmeter at J12.
      • 4. On the CIM, adjust R44 for the type of line used. Leased Line/Direct Connect (default) -12 dBm...
      • 5. On the MAC, adjust R243 for -6 dBm (387 mV RMS) measured at J100/J103.
    • Figure 7-23 MAC SWITCH SETTINGS
      • 7.7.5 BLANK AND BURST - FSK DATA FROM SWITCH
      • 1. On the MAC, set S100 all Sections OFF set S101, sections 2, 3, 4 OFF set S101, section 1 ON (s...
      • 2. On the CIM, (in the Switch) generate an alignment tone (set S5 to a value of "8").
      • 3. On the CIM, adjust R86 at TP4 for the type of line used. Leased Line/Direct Connect (default) ...
      • 4. On the CIM, verify at J12 (see Figure 7-31). Leased Line/Direct Connect (default) -21 dBm (69 ...
    • Figure 7-24 BATTERY REVERT TEST SETUP
      • 7.7.6 FSK LINK - FSK DATA LEVEL TO SWITCH
      • 1. On the MAC, set S100 all Sections OFF set S101, sections 2, 3, 4 OFF set S101, section 1 ON (s...
      • 2. Connect a balanced AC voltmeter with 600 ohm input impedance between balanced lines RXA+ and R...
      • 3. On the MAC, adjust R240 for the type of line used. Leased Line/Direct Connect (default) -22 dB...
        • 7.8 VISUAL CHECK
      • 1. Make sure the heat sunk parts are not shorted to the heat-sink.
      • 2. Verify all electrolytic capacitors are installed correctly.
      • 3. Connect 023-2000-830 Battery Back-Up as shown in Figure 7-24.
        • 7.9 BATTERY REVERT TEST
      • 1. Connect the circuit as shown in Figure 7-24.
      • 2. Turn the active load to current mode at 1A.
      • 3. Turn enable to On, battery fault LED should be on.
      • 4. Increase Vs1 until: the relay engages the voltage is present on the active load the battery fa...
      • 5. Increase Vs1 until: the relay disengages the LED lights no voltage is present at the active lo...
      • 6. Decrease VS1 until: the relay engages the LED goes out voltage is present at the active load. ...
      • 7. Set Vs1 to 26.5V DC and turn the enable line to OFF. No voltage will be present at the active ...
      • 8. Decrease Vs1 until: the relay disengages the LED lights no voltage is present at the active lo...
      • 9. With the enable line OFF measure current Is, it should be less than 20 mA.
      • 10. Reverse the polarity of Vs1 Set to 26.5V DC BBM Enable ON Reverse Battery LED will light and ...
      • 11. Disconnect the test setup.
        • 7.10 BATTERY CHARGER SECTION
      • 1. Connect Battery Backup Module as shown in Figure 7-25.
      • 2. Set the active load to 0A and set Vs2 to 40V at 3A.
      • 3. Adjust R140 so the voltage at the active load reads 27.55V DC ±0.1V.
      • 4. Increase the active load current to 1.8A and verify voltage at the load is greater than 26V.
      • 5. Set the active load current to zero, shut off Vs2 and disconnect the BBM. Glyptol R140.
    • Figure 7-25 BATTERY CHARGER TEST SETUP
    • Figure 7-26 SWITCH (RNT) BACKPLANE WIREHARNESS
    • Figure 7-27 SWITCH (RNT) PUNCH BLOCK
    • Figure 7-28 MAC ALIGNMENT POINTS
    • Figure 7-29 MAIN PROCESSOR CARD ALIGNMENT POINTS
    • Figure 7-30 INTERFACE ALARM CARD ALIGNMENT POINTS
    • Figure 7-31 CIM ALIGNMENT POINTS
• sect8.pdf
  • SECTION 8 SERVICING
    • 8.1 INTRODUCTION
    • 8.1.1 PERIODIC CHECKS
    • 8.1.2 SURFACE-MOUNTED COMPONENTS
    • 8.1.3 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS
    • 8.1.4 REPLACEMENT PARTS LIST
    • 8.1.5 TCXO MODULES NOT SERVICEABLE
    • 8.2 SYNTHESIZER SERVICING
    • 8.2.1 INTRODUCTION
    • 8.2.2 TCXO MODULE
    • 8.2.3 VOLTAGE CONTROLLED OSCILLATOR (VCO)
    • Figure 8-1 LOCK DETECT WAVEFORM
    • Figure 8-2 MODULUS CONTROL WAVEFORM
      • 8.2.4 INTERNAL PRESCALER
      • 8.2.5 CALCULATING "N " AND "A " COUNTER DIVIDE NUMBERS
      • 8.3 RECEIVER SERVICING
      • 8.4 TRANSMITTER SERVICING
      • 8.5 POWER SUPPLY SERVICING
    • Figure 8-3 POWER SUPPLY REAR VIEW
    • Figure 8-4 POWER SUPPLY FRONT VIEW
      • 8.5.1 VOLTAGE CHECKS
      • 8.6 CHIP COMPONENT IDENTIFICATION
      • 8.6.1 CERAMIC CHIP CAPS (510-36xx-xxx)
      • 8.6.2 TANTALUM CHIP CAPS (510-26xx-xxx)
      • 8.6.3 CHIP INDUCTORS (542-9000-xxx)
      • 8.6.4 CHIP RESISTORS
    • Figure 8-5 3-DIGIT RESISTOR
    • Table 8-1 CHIP INDUCTOR IDENTIFICATION
    • Table 8-2 CERAMIC CHIP CAP IDENTIFICATION
      • 8.6.5 CHIP TRANSISTORS AND DIODES
      • 8.7 BERYLLIUM PRODUCT WARNING
      • 8.8 GRAFOIL REPLACEMENT PROCEDURE
• sect9.pdf
  • SECTION 9 PARTS LIST
• sect10.pdf
  • SECTION 10 SCHEMATICS AND COMPONENT LAYOUTS
    • Figure 10-1 RF MODULE INTERFACE CONNECTOR
    • Figure 10-2 BACKPLANE CABLE CONNECTIONS
    • Figure 10-3 REPEATER CABINET EXPLODED VIEW
    • Figure 10-4 REPEATER REAR VIEW
    • Figure 10-5 REPEATER FRONT VIEW
    • Figure 10-6 OCXO DRAWER
    • Figure 10-7 OCXO DRAWER FRONT/REAR PANEL
    • Figure 10-8 INPUT/OUTPUT ALARM INTERCONNECT
    • Figure 10-9 RF INTERCONNECT
    • Figure 10-10 BACKPLANE INTERCONNECT
    • Figure 10-11 RF INTERFACE BOARD COMPONENT LAYOUT
    • Figure 10-12 RF INTERFACE BOARD SCHEMATIC
    • Figure 10-13 RECEIVER BOARD COMPONENT LAYOUT
    • Figure 10-14 RECEIVE VCO COMPONENT LAYOUT
    • Figure 10-15 RECEIVE VCO SCHEMATIC
    • Figure 10-16 RECEIVER SCHEMATIC
    • Figure 10-17 EXCITER BOARD COMPONENT LAYOUT
    • Figure 10-18 TRANSMIT VCO COMPONENT LAYOUT
    • Figure 10-19 TRANSMIT VCO SCHEMATIC
    • Figure 10-20 EXCITER SCHEMATIC
    • Figure 10-21 75W POWER AMPLIFIER COMPONENT LAYOUT
    • Figure 10-22 75W POWER AMPLIFIER SCHEMATIC
    • Figure 10-23 160W POWER AMPLIFIER COMPONENT LAYOUT
    • Figure 10-24 160W POWER AMPLIFIER SCHEMATIC
    • Figure 10-25 FORWARD/REVERSE POWER BOARD COMPONENT LAYOUT
    • Figure 10-26 FORWARD/REVERSE POWER BOARD SCHEMATIC
    • Figure 10-27 OCXO COMPONENT LAYOUT
    • Figure 10-28 OCXO SCHEMATIC
    • Figure 10-29 OCXO POWER SUPPLY COMPONENT LAYOUT
    • Figure 10-30 OCXO POWER SUPPLY SCHEMATIC
    • Figure 10-31 MAIN PROCESSOR CARD COMPONENT LAYOUT
    • Figure 10-32 MAIN PROCESSOR CARD SCHEMATIC (1 OF 2)
    • Figure 10-33 MAIN PROCESSOR CARD SCHEMATIC (2 OF 2)
    • Figure 10-34 MAIN AUDIO CARD COMPONENT LAYOUT (OPPOSITE COMPONENT SIDE)
    • Figure 10-35 MAIN AUDIO CARD COMPONENT LAYOUT (COMPONENT SIDE)
    • Figure 10-36 MAIN AUDIO CARD SCHEMATIC (1 OF 3)
    • Figure 10-37 MAIN AUDIO CARD SCHEMATIC (2 OF 3)
    • Figure 10-38 MAIN AUDIO CARD SCHEMATIC (3 OF 3)
    • Figure 10-39 INTERFACE ALARM CARD COMPONENT LAYOUT
    • Figure 10-40 INTERFACE ALARM CARD SCHEMATIC
    • Figure 10-41 BACKPLANE COMPONENT LAYOUT (CARD SIDE)
    • Figure 10-42 BACKPLANE COMPONENT LAYOUT (CABLE SIDE)
    • Figure 10-43 BACKPLANE SCHEMATIC
    • Figure 10-44 800W POWER SUPPLY COMPONENT LAYOUT (OPPOSITE COMPONENT SIDE)
    • Figure 10-45 800W POWER SUPPLY COMPONENT LAYOUT (COMPONENT SIDE)
    • Figure 10-46 POWER SUPPLY SCHEMATIC (1 OF 2)
    • Figure 10-47 POWER SUPPLY SCHEMATIC (2 OF 2)
    • Figure 10-48 POWER SUPPLY FILTER BOARD COMPONENT LAYOUT
    • Figure 10-49 POWER SUPPLY FILTER BOARD SCHEMATIC
    • Figure 10-50 BATTERY BACK-UP COMPONENT LAYOUT
    • Figure 10-51 BATTERY BACK-UP SCHEMATIC
    • Figure 10-52 POWER SUPPLY FILTER BOARD COMPONENT LAYOUT
    • Figure 10-53 POWER SUPPLY FILTER BOARD SCHEMATIC
    • Figure 10-54 POWER CABLE CONNECTOR AND SCHEMATIC
    • Figure 10-55 COMPANDOR SCHEMATIC
    • Figure 10-56 COMPANDOR COMPONENT LAYOUT
• app_a.pdf
  • APPENDIX A 900 MHz CHANNEL FREQUENCY CHART