Manuali utente per E F Johnson Company 2422001-1

Sommario

• SECTION 1 INTRODUCTION AND OPERATION

  15
  • 1.1 SCOPE OF MANUAL

    15
  • 1.2 REPEATER DESCRIPTION

    15
  • 1.3 REPEATER IDENTIFICATION

    15
  • Figure 1-1 REPEATER IDENTIFICATION

    15
    • 1.4 MODEL NUMBER BREAKDOWN

      15
  • Figure 1-2 PART NUMBER BREAKDOWN

    15
    • 1.5 ACCESSORIES

      15
  • Table 1-1 REPEATER ACCESSORIES

    16
    • 1.6 PRODUCT WARRANTY

      16
    • 1.7 FACTORY CUSTOMER SERVICE

      16
    • 1.8 FACTORY RETURNS

      16
    • 1.9 REPLACEMENT PARTS

      17
    • 1.10 SOFTWARE UPDATES/REVISIONS

      17
    • 1.11 REPEATER OPERATION

      17
    • 1.11.1 MAIN PROCESSOR CARD (MPC)

      17
  • Figure 1-3 REPEATER CARDS

    18
  • Table 1-2 ACTIVE REPEATER ALARMS

    19
    • 1.11.2 MAIN AUDIO CARD (MAC)

      20
    • 1.11.3 INTERFACE ALARM CARD (IAC)

      20
    • 1.11.4 POWER SUPPLY

      21
    • 1.12 REPEATER INFORMATION

      21
    • 1.12.1 INTRODUCTION

      21
    • 1.12.2 HOME REPEATERS

      21
    • 1.12.3 INTER-REPEATER DATA COMMUNICATION

      21
    • 1.12.4 MOBILE TRANSCEIVERS

      21
    • 1.13 REPEATER DATA BUS SIGNALING

      21
    • 1.13.1 GENERAL

      21
    • 1.13.2 MOBILE DATA MESSAGE ORDER

      22
    • 1.13.3 ID VALIDATOR OPERATION

      22
• SECTION 2 INSTALLATION

  25
  • 2.1 INTRODUCTION

    25
  • 2.1.1 SITE PREPARATION AND ANTENNA INSTALLATION

    25
  • 2.2 ENVIRONMENT

    25
  • 2.3 VENTILATION

    25
  • 1. The Repeaters should be mounted with a minimum of 6 inches clearance between the front or back...

    25
  • 2. Cabinet enclosures must provide air vents for adequate air circulation.

    25
  • 3. Temperature and humidity must be considered when several Repeaters are installed at a site. Th...

    25
    • 2.4 AC POWER

      26
    • 2.5 BATTERY BACKUP

      26
  • Figure 2-1 BATTERY BACKUP CONNECTOR

    26
  • Figure 2-2 TEMPERATURE SENSOR CABLE

    26
    • 2.6 800W POWER SUPPLY

      26
  • Figure 2-3 POWER CABLE CONNECTOR AND SCHEMATIC

    27
  • Table 2-1 OUTPUT VOLTAGES

    27
  • Table 2-2 OVER VOLTAGE

    27
    • 2.6.1 AC INPUT REQUIREMENTS

      27
    • 2.7 GROUNDING

      28
    • 2.7.1 PROTECTION GUIDELINES

      29
    • 1. Ensure that ground connections make good metal- to-metal contact (grounding rod, grounding tra...

      29
    • 2. With surge protectors, ensure that ground wires go directly to ground, and not through other e...

      29
    • 3. Run the ground wire for RF coax protectors directly to ground.

      29
    • 4. With coax protectors, ensure maximum instantaneous voltage does not exceed the rated voltage.

      29
    • 5. Do not run ground wires parallel to any other wiring (e.g. a ground wire parallel to a telepho...

      29
    • 6. Double check all equipment for good ground and that all connections are clean and secure.

      29
      • 2.8 UNPACKING AND INSPECTION

        29
  • Figure 2-4 RACK MOUNTED REPEATERS

    29
  • Figure 2-5 5-CHANNEL COMBINING SYSTEM

    30
    • 2.9 REPEATER DATA BUS INSTALLATION

      30
    • 2.9.1 MPC DATA BUS SWITCH SETTINGS

      30
    • 2.9.2 MPC DATA BUS JUMPER SETTINGS

      30
  • Figure 2-6 RJ-11 TO BNC MPC JUMPERS

    31
  • Figure 2-7 RJ-11 TO RJ-11 MPC JUMPERS

    31
    • 2.10 CONNECTING RECEIVE AND TRANSMIT ANTENNAS

      31
  • Figure 2-8 ANTENNA CONNECTIONS

    31
  • Figure 2-9 RJ-11 TO BNC ADAPTER MODULE

    31
  • Figure 2-10 SINGLE REPEATER INSTALLATION

    32
  • Figure 2-11 TWO REPEATER INSTALLATION

    32
  • Figure 2-12 THREE OR MORE REPEATERS INSTALLATION

    33
  • Figure 2-13 MIXED VIKING VX AND CR1100 REPEATER INSTALLATION

    34
• SECTION 3 SOFTWARE

  35
  • 3.1 INTRODUCTION

    35
  • 3.1.1 HOW TO USE THIS MANUAL

    35
  • 3.1.2 GETTING STARTED

    35
  • 3.1.3 COMPUTER DESCRIPTION

    35
  • 1. One 3.5" high density disk drive.

    35
  • 2. 640K of memory

    35
  • 3. MS-DOS version 2.0 or higher

    35
  • 4. One serial port

    35
  • 5. Monochrome or color monitor and video card

    35
    • 3.1.4 EEPROM DATA STORAGE

      35
    • 3.1.5 COMMAND LINE OPTIONS

      36
  • 1. When running the compiled (.EXE) version, type / c2 on the command line after the program name...

    36
  • 2. Select COM port from Utilities heading.

    36
    • 3.1.6 COLOR OR MONOCHROME OPERATION

      36
    • 3.2 REPEATER PROGRAM SOFTWARE

      36
    • 3.2.1 INSTALLING THE SOFTWARE

      36
    • 3.2.2 MINIMUM FREE MEMORY REQUIRED

      37
    • 3.3 REPEATER PROGRAMMER

      37
    • 3.3.1 PROGRAM FILES

      37
    • 3.4 ALIGNMENT SOFTWARE

      37
  • Figure 3-1 REPEATER TEST MENU

    37
    • 3.5 HELP F1

      38
  • Figure 3-2 PROGRAMMING FLOWCHART

    38
• SECTION 4 PULL DOWN MENUS

  39
  • 4.1 MENU DISPLAYS

    39
  • 4.2 FILE MENU

    39
  • Figure 4-1 FILE MENU

    39
  • Figure 4-2 LOAD FILE

    39
    • 4.2.1 LOAD

      39
    • 4.2.2 SAVE

      39
    • 4.2.3 SAVE AS

      39
  • Figure 4-3 SAVE FILE

    39
    • 4.2.4 NEW

      40
    • 4.2.5 PRINT REPEATER CONFIGURATION

      40
    • 4.2.6 DOS SHELL

      40
    • 4.2.7 QUIT (ALT X)

      40
  • Figure 4-4 EDIT PROGRAMMING FLOWCHART

    40
    • 4.3 EDIT

      41
  • Figure 4-5 EDIT MENU

    41
    • 4.3.1 SETUP PARAMETERS

      41
    • 4.3.2 SELECT REPEATER

      42
  • Figure 4-6 REPEATER LIST

    42
    • 4.3.3 ALARM CONFIGURATION

      42
  • Figure 4-7 ALARM CONFIGURATION

    42
  • Figure 4-8 INPUT ALARMS

    42
  • Figure 4-9 OUTPUT ALARMS

    43
  • Figure 4-10 ALARM CROSS REFERENCE

    43
    • 4.3.4 REPEATER TYPE

      43
  • Figure 4-11 REPEATER TYPE

    43
    • 4.3.5 DELETE REPEATER

      43
  • Figure 4-12 DELETE REPEATER

    43
    • 4.3.6 TELEPHONE PARAMETERS

      44
    • 4.4 TRANSFER

      44
  • Figure 4-13 TRANSFER MENU

    44
    • 4.4.1 WRITE SETUP PARAMETERS

      44
  • Figure 4-14 WRITE SETUP PARAMETERS

    44
  • Figure 4-15 PROGRAM WRITE SETUP

    44
    • 4.4.2 READ SETUP PARAMETERS

      44
  • Figure 4-16 READ SETUP PARAMETERS

    44
  • Figure 4-17 READING SETUP

    44
  • Figure 4-18 HARDWARE PROGRAMMING FLOWCHART

    44
    • 4.5 HARDWARE

      45
  • Figure 4-19 HARDWARE MENU

    45
    • 4.5.1 HSDB MONITOR

      45
  • Figure 4-20 HSDB MONITOR

    45
    • 4.5.2 RECEIVE/TRANSMIT DATA

      45
  • Figure 4-21 MOBILE TRAFFIC MONITOR

    45
    • 4.5.3 RF DATA

      45
  • Figure 4-22 RF LINE MONITOR

    46
    • 4.5.4 REVISION/VERSION

      46
    • 4.5.5 MODE SELECT

      46
  • Figure 4-23 REVISION/VERSION

    46
  • Figure 4-24 REVISION/VERSION

    46
  • Figure 4-25 TEST PROGRAMMING FLOWCHART

    47
    • 4.6 TEST

      47
  • Figure 4-26 TEST MENU

    47
    • 4.6.1 POWER AMPLIFIER

      47
    • 4.6.2 RECEIVER

      47
    • 4.6.3 EXCITER

      47
    • 4.6.4 FULL REPEATER

      48
    • 4.7 UTILITIES

      48
  • Figure 4-27 UTILITIES MENU

    48
    • 4.7.1 COM PORT

      48
  • Figure 4-28 COM PORT SELECTION

    48
  • Figure 4-29 LAPTOP INTERCONNECT CABLE

    48
    • 4.7.2 DISPLAY MODE

      48
  • Figure 4-30 COLOR MODE SELECTION

    48
    • 4.7.3 USER LEVEL

      48
• SECTION 5 REPEATER PROGRAMMING

  49
  • 5.1 CREATING A NEW FILE

    49
  • 5.1.1 SELECT REPEATER TO EDIT

    49
  • 1. Highlight EDIT, press Enter.

    49
  • 2. Highlight SELECT REPEATER, press Enter.

    49
  • 3. Default is the only repeater in this list, press Enter.

    49
  • 4. Highlight EDIT, press Enter.

    49
  • 5. Highlight SETUP PARAMETERS, press Enter.

    49
  • 6. The Setup Parameters screen appears (see Figure 5- 1). Fill in the parameters for this repeate...

    49
  • 7. Select parameters, press F2 to accept.

    49
  • 8. Highlight EDIT, press Enter.

    49
  • 9. Highlight ALARM CONFIGURATION and press Enter, if alarms are to be configured.

    49
  • 10. Program the Alarms to be configured (see Section 4.3.3), press F2 to accept.

    49
  • 11. Highlight FILES, press Enter.

    49
  • 12. Highlight SAVE, press Enter.

    49
  • 13. Type in a valid DOS filename. For this example site1.dat is used.

    49
  • 14. The file consists of default and repeater one under the filename of site1.dat.

    49
    • 5.2 ADDING A REPEATER TO A FILE

      49
  • 1. Highlight EDIT, press Enter.

    49
  • 2. Highlight SELECT REPEATER, press Enter.

    49
  • 3. The repeater list shown for this file includes default and repeater one. These contain the sam...

    49
  • 4. Highlight DEFAULT, press Enter.

    49
  • 5. Highlight EDIT, press Enter.

    49
  • 6. Highlight SETUP PARAMETERS, press Enter.

    49
  • 7. Change the Repeater number and other parameters as required for this repeater, press F2.

    49
  • 8. Highlight EDIT, press Enter.

    49
  • 9. Highlight ALARM CONFIGURATION and press Enter, if alarms are to be configured.

    49
  • 10. Program the Alarms to be configured (see Section 4.3.3), press F2 to accept.

    49
  • 11. Highlight FILES, press Enter.

    49
  • 12. Highlight SAVE, press Enter.

    49
  • 13. Repeater 2 is added to the Repeater List in file site1.dat.

    49
  • Table 5-1 REPEATER SETUP PARAMETERS

    50
  • Figure 5-1 SETUP PARAMETERS

    50
• SECTION 6 CIRCUIT DESCRIPTION

  51
  • 6.1 RECEIVER

    51
  • 6.1.1 INTRODUCTION

    51
  • 6.1.2 REGULATED VOLTAGE SUPPLIES

    51
  • 6.1.3 HELICAL FILTERS, RF AMPLIFIER

    51
  • 6.1.4 12.5 kHz IF

    51
  • Figure 6-1 12.5 kHz IF RECEIVER BLOCK DIAGRAM

    52
  • Figure 6-2 U201/U203 BLOCK DIAGRAM

    52
  • Figure 6-3 25 kHz IF RECEIVER BLOCK DIAGRAM

    53
    • 6.1.5 25 kHz IF

      53
    • 6.1.6 VCO

      54
    • 6.1.7 ACTIVE FILTER

      54
  • Figure 6-4 SYNTHESIZER BLOCK DIAGRAM

    55
    • 6.1.8 BUFFER

      55
    • 6.1.9 SYNTHESIZER

      55
    • 6.1.10 BUFFER AMPLIFIER

      57
    • 6.1.11 LOCK DETECT

      57
    • 6.1.12 CHARGE PUMP, LOOP FILTER

      57
    • 6.1.13 VOLTAGE MULTIPLIER

      57
    • 6.1.14 BUFFER AMPLIFIER

      57
    • 6.1.15 FIRST AND SECOND INJECTION AMPLIFIERS

      58
    • 6.2 EXCITER

      58
    • 6.2.1 VCO (A007)

      58
    • 6.2.2 VCO BUFFER

      58
    • 6.2.3 VCO/TCXO FREQUENCY MODULATION

      58
  • Figure 6-5 EXCITER BLOCK DIAGRAM

    59
    • 6.2.4 SYNTHESIZER

      59
    • 6.2.5 BUFFER AMPLIFIER

      60
    • 6.2.6 BUFFER AMPLIFIER

      60
    • 6.2.7 LOCK DETECT

      60
    • 6.2.8 CHARGE PUMP, LOOP FILTER

      61
    • 6.2.9 BUFFER AMPLIFIER

      61
    • 6.2.10 RF AMPLIFIERS

      61
    • 6.3 110W POWER AMPLIFIER

      61
    • 6.3.1 AMPLIFIER/PREDRIVER

      61
    • 6.3.2 DRIVER

      61
  • Figure 6-6 110W POWER AMPLIFIER BLOCK DIAGRAM

    62
    • 6.3.3 FINAL AMPLIFIERS

      62
    • 6.3.4 POWER DETECTORS

      62
    • 6.3.5 THERMAL SENSOR

      62
    • 6.3.6 FORWARD/REVERSE POWER DETECT, CIRCULATOR, LOW-PASS FILTER

      62
    • 6.4 RF INTERFACE BOARD

      63
    • 6.4.1 POWER CONNECTOR

      63
    • 6.4.2 SIGNAL CONNECTOR (J101)

      63
    • 6.4.3 FAN CONNECTOR (J104)

      65
    • 6.4.4 POWER AMPLIFIER CONNECTIONS

      65
    • 6.4.5 EXCITER CONNECTOR (J102)

      66
    • 6.4.6 RECEIVER CONNECTOR (J103)

      67
  • Figure 6-7 RF INTERFACE BOARD BLOCK DIAGRAM

    69
    • 6.5 800W POWER SUPPLY

      70
    • 6.5.1 FILTER BOARD

      70
    • 6.5.2 POWER FACTOR CORRECTION

      70
    • 6.5.3 MAIN PULSE WIDTH MODULATOR

      70
  • Figure 6-8 BLOCK DIAGRAM

    71
    • 6.5.4 SYNCHRONIZING CIRCUITS

      72
    • 6.5.5 FAN AND THERMAL SHUTDOWN

      72
    • 6.5.6 +15V CONVERTER

      73
    • 6.5.7 +5V CONVERTER

      73
    • 6.5.8 -5V CONVERTER

      73
    • 6.5.9 POWER SUPPLY REPAIR AND ALIGNMENT

      73
    • 1. The +26.5V supply can be adjusted with R174 when any of the following components are replaced:...

      74
    • 2. The +15V supply can be adjusted with R216 when any of the following components are replaced: R...

      74
    • 3. The +5.2V supply can be adjusted with R254 when any of the following components are replaced: ...

      74
      • 6.6 BATTERY BACK-UP MODULE

        74
      • 6.6.1 OPERATION

        74
      • 6.6.2 CHARGER

        74
  • Figure 6-9 NO LOAD CHARGE VOLTAGE vs. TEMPERATURE

    75
    • 6.6.3 REVERSE BATTERY PROTECTION

      75
    • 6.6.4 ENGAGING THE RELAY

      75
    • 6.6.5 OVER/UNDERVOLTAGE SHUTDOWN

      75
    • 6.6.6 BBM FAN CONTROL

      76
    • 6.7 CARD RACK

      76
  • Figure 6-10 BACKPLANE CONNECTORS

    76
    • 6.8 CARD RACK

      77
    • 6.9 EXTERNAL CONNECTOR BOARD

      77
  • Figure 6-11 EXTERNAL CONNECTOR BOARD

    77
  • Figure 6-12 U27 BLOCK DIAGRAM

    78
    • 6.10 MAIN PROCESSOR CARD

      78
    • 6.10.1 INTRODUCTION

      78
    • 6.10.2 MAIN CONTROLLER MICROPROCESSOR

      79
    • 6.10.3 HIGH SPEED DATA BUS MICROPROCESSOR (U13)

      79
    • 6.10.4 CHIP SELECT DECODERS (U15/U4)

      80
    • 6.10.5 P1 SIGNAL CONNECTOR

      80
    • 6.10.6 J1 COMPUTER CONNECTOR

      81
    • 6.10.7 J2 MEMORY SELECT

      81
    • 6.10.8 J3 BAUD RATE

      81
    • 6.10.9 S2/S3 HSDB SETTINGS

      81
    • 6.10.10 J4 EPROM MEMORY LOADING

      81
    • 6.10.11 J5 HSDB SPEED

      81
    • 6.10.12 J6 WATCHDOG

      81
    • 6.11 MAIN AUDIO CARD

      82
    • 6.11.1 INTRODUCTION

      82
    • 6.11.2 AUDIO/DATA MICROPROCESSOR

      82
    • 6.11.3 RECEIVE AUDIO

      82
    • 6.11.4 RECEIVE SQUELCH CIRCUITRY

      83
    • 6.11.5 RECEIVE DATA CIRCUITRY

      83
    • 6.11.6 RECEIVE AUDIO PROCESSING

      83
    • 6.11.7 VOTER AUDIO

      84
    • 6.11.8 COMPANDOR OPTION

      84
    • 6.11.9 TRANSMIT AUDIO

      84
    • 6.11.10 TRANSMIT AUDIO PROCESSING

      84
    • 6.11.11 TRANSMIT DATA AND CWID PROCESSING

      85
    • 6.11.12 P101 SIGNALING CONNECTOR

      85
    • 6.11.13 P100 EXTERNAL OUTPUTS

      86
    • 6.11.14 J100 A D LEVEL TEST POINT

      87
    • 6.11.15 J101 SPEAKER/MICROPHONE

      87
    • 6.11.16 J102 LOCAL MICROPHONE

      87
    • 6.11.17 J103 GROUND

      87
    • 6.11.18 J104 EXTERNAL SPEAKER

      87
    • 6.11.19 J105 WATCH DOG

      87
    • 6.11.20 J106 TX DATA PATH

      87
    • 6.11.21 A301 COMPANDOR CONNECTIONS

      87
    • 6.12 INTERFACE ALARM CARD

      88
    • 6.12.1 RELAY OUTPUTS

      88
    • 6.12.2 ISOLATED INPUTS

      88
  • Figure 6-13 4 I/O J1 ALARM OUTPUTS

    88
  • Figure 6-14 4 I/O J2 ALARM OUTPUTS

    88
  • Figure 6-15 S500-S503

    89
    • 6.12.3 ALARM INDICATORS

      89
    • 6.12.4 ALARM FUNCTIONS

      89
  • Figure 6-16 ALARM EXAMPLE

    89
    • 6.12.5 P500 SIGNALING CONNECTOR

      90
    • 6.12.6 P501 EXTERNAL OUTPUTS

      91
    • 6.12.7 J500 A D LEVEL TEST POINT

      93
    • 6.12.8 J501 GROUND

      93
    • 6.12.9 J502 +15V

      93
    • 6.12.10 POWER SWITCH

      93
    • 6.12.11 J505 SQUELCH ENABLE OUTPUT

      93
  • Figure 6-17 MAIN PROCESSOR CARD BLOCK DIAGRAM

    95
  • Figure 6-18 MAIN AUDIO CARD LOGIC BLOCK DIAGRAM

    96
  • Figure 6-19 MAIN AUDIO CARD AUDIO BLOCK DIAGRAM

    97
  • Figure 6-20 INTERFACE ALARM CARD BLOCK DIAGRAM

    98
• SECTION 7 ALIGNMENT AND TEST PROCEDURES

  99
  • 7.1 RECEIVER ALIGNMENT

    99
  • 7.1.1 PRETEST

    99
  • 7.1.2 VOLTAGE MEASUREMENTS

    99
  • 7.1.3 PROGRAM TUNE-UP CHANNEL

    99
  • 1. Using the PC and software, program the Synthesizer for the Receive frequency.

    99
  • 2. Tune the VCO capacitor L102 for +7V DC ±0.05V at TP401. Increase the receive frequency by 1 MH...

    99
  • 3. Alternately tune CV151 and CV152 in 1/2-turn to 1-turn increments until a voltage is measured ...

    99
  • 4. Retune CV151/CV152 for a peak at TP401.

    99
  • 1. Program the Synthesizer for the Highest receive frequency (i.e. 150 or 178 MHz).

    99
  • 2. Set the control line voltage for 15V at TP401. Check 2 MHz below the programmed frequency (i.e...

    99
  • 1. Program the Synthesizer for the Lowest receive frequency (i.e. 132 or 150 MHz).

    99
  • 2. Set the control line voltage for 2V at TP401. Check 2 MHz above the programmed frequency (i.e....

    99
  • Figure 7-1 RECEIVER ALIGNMENT POINTS

    100
    • 7.1.4 RECEIVER FREQUENCY ADJUST

      100
    • 1. Place a pick-up loop (sniffer) or RF probe connected to a frequency counter near TP102.

      100
    • 2. Set Y401 (TCXO) for the Injection Frequency ±50 Hz (Inj Freq = chnl freq + 52.95 MHz).

      100
      • 7.1.5 VCO TEST

        100
    • 1. The software programs the synthesizer for 1 MHz above the receive channel.

      100
    • 2. The voltage on TP401 should be < 10V.

      100
    • 3. Record the voltage on TP401 __________.

      100
    • 4. The software programs the synthesizer for 1 MHz below the receive channel.

      100
    • 5. The voltage on TP401 should be > 4V.

      100
    • 6. Record the voltage on TP401 __________.

      100
    • 7. If the voltages recorded in Steps 3 and 6 are not within ±0.2V, tune L102 as required to balan...

      100
    • 8. The software programs the synthesizer for the receive frequency.

      100
      • 7.1.6 FRONT END ADJUSTMENTS

        100
    • 1. Set the signal generator to the receive frequency at a level sufficient to produce an output v...

      100
    • 2. Tune CV101, CV102, CV103, CV104, CV105, and CV106, then repeat, for a peak voltage at TP201. D...

      100
    • 1. Set the generator to an RF level sufficient to produce 2V DC at TP201.

      100
    • 2. Remove any modulation from the signal generator.

      100
    • 3. Increase the signal generator RF frequency 2.5 kHz.

      101
    • 4. Adjust CV211 for peak DC voltage at TP201.

      101
    • 5. Adjust CV212 for peak DC voltage at TP201.

      101
    • 6. Reset the signal generator to the tune-up frequency.

      101
    • 7. Set the signal generator to 100 mV into the receiver with a 1 kHz tone at ±1.5 kHz deviation. ...

      101
    • 8. Tune Z215 for 2V ±0.05V at U203, pin 9.

      101
    • 9. Tune RV215 for 387 mV RMS, ±5 mV RMS, at TP202.

      101
    • 10. Adjust RV212 for 2V ±0.05V at TP202.

      101
    • 11. Connect a distortion analyzer to TP202.

      101
    • 12. Tune L211, L213, L214 and L216 for minimum distortion <5%, (typically <3%).

      101
    • 13. Repeat Step 12 then Steps 8, 9 and 10.

      101
    • 1. Set the generator to an RF level sufficient to produce 2V DC at TP201.

      101
    • 2. Remove any modulation from the signal generator.

      101
    • 3. Increase the signal generator RF frequency 5 kHz.

      101
    • 4. Adjust CV201 for peak DC voltage at TP201.

      101
    • 5. Adjust CV202 for peak DC voltage at TP201.

      101
    • 6. Reset the signal generator to the tune-up frequency.

      101
    • 7. Set the generator to 100 mV into the receiver with a 1 kHz tone at ±3 kHz deviation. (1000 mV ...

      101
    • 8. Tune Z205 for 2V ±0.05V at U201, pin 9.

      101
    • 9. Tune RV203 for 387 mV RMS, ±5 mV RMS, at TP202.

      101
    • 10. Adjust RV202 for 2V ±0.05V at TP202.

      101
    • 11. Connect a distortion analyzer to TP202.

      101
    • 12. Tune L201, L203, L204 and L206 for minimum distortion <5%, (typically <3%).

      101
    • 13. Repeat Step 12 then Steps 8, 9 and 10.

      101
      • 7.1.7 AUDIO DISTORTION

        101
    • 1. Plug a 16 ohm load at J101 or J104 on the TPI (Third Party Interface Card).

      101
    • 2. Connect a distortion analyzer to the 16 ohm load.

      101
    • 3. Measure the distortion of the receive audio at J101 or J104 on the TPI with the local volume c...

      101
    • 4. The reading shall be less than 3%. (Typically less than 1%.)

      101
    • 5. Measure receive sensitivity at J101 or J104 on the TPI.

      101
    • 6. The reading should be less than 0.35 mV. (Typically 0.25 mV.)

      101
    • 7. The software programs the synthesizer for 1 MHz above the Receive frequency.

      101
    • 8. Receive sensitivity should be less than 0.35 mV. (Typically less than 0.30 mV.)

      101
    • 9. The software programs the synthesizer for 1 MHz below the Receive frequency.

      101
    • 10. Receive sensitivity should be less than 0.35 mV. (Typically less than 0.30 mV.)

      101
    • 11. Adjust the signal generator level to produce 15 dB SINAD.

      101
    • 12. Adjust RV201 for 0.5V ±0.02V at TP201.

      101
      • 7.2 EXCITER ALIGNMENT

        102
      • 7.2.1 PRETEST

        102
    • 1. Set TCXO modulation adjust RV101 fully counterclockwise.

      102
    • 2. Connect the power meter to J402.

      102
      • 7.2.2 VOLTAGE MEASUREMENTS

        102
  • Figure 7-2 EXCITER ALIGNMENT POINTS

    102
    • 7.2.3 PROGRAM TUNE-UP CHANNEL

      102
    • 1. Using the PC and software, program the Synthesizer for the Transmit frequency.

      102
    • 2. Press the space bar to key the Exciter.

      102
    • 3. Tune the VCO inductor L102 for +4.5V DC ±0.05V at TP1 (U403, pin 6). Increase the transmit fre...

      102
    • 4. Measure the Power Output of the Exciter at J402. Reading should be > +18 dBm.

      103
    • 5. Press the space bar to unkey the Exciter.

      103
    • 1. Program the Synthesizer for the Highest transmit frequency (i.e. 150 or 178 MHz).

      103
    • 2. Press the space bar to key the Exciter.

      103
    • 3. Set the control line voltage for 7.5V at TP1. Check 6 MHz below the programmed frequency (i.e....

      103
    • 4. Press the space bar to unkey the Exciter.

      103
    • 1. Program the Synthesizer for the Lowest transmit frequency (i.e. 132 or 150 MHz).

      103
    • 2. Set the control line voltage for 2V at TP1. Check 6 MHz above the programmed frequency (i.e. 1...

      103
      • 7.2.4 VCO TEST

        103
    • 1. The software programs the synthesizer for 3 MHz above the Tune-Up frequency.

      103
    • 2. Press the space bar to key the Exciter.

      103
    • 3. The voltage on U403, pin 6 should be < 7V. Power output should be > +18 dBm.

      103
    • 4. Press the space bar to unkey the Exciter.

      103
    • 5. The software programs the synthesizer for 3 MHz below the Tune-Up frequency.

      103
    • 6. Press the space bar to key the Exciter.

      103
    • 7. The voltage on TP1 (U403, pin 6) should be > 2.5V. Power output should be > +18 dBm.

      103
    • 8. Press the space bar to unkey the Exciter.

      103
    • 9. The software programs the synthesizer for the Transmit Channel.

      103
      • 7.2.5 TCXO FREQUENCY ADJUST

        103
    • 1. Connect a 10 dB pad and frequency counter to J402.

      103
    • 2. Press the space bar to key the Exciter.

      103
    • 3. Tune TCXO Y401 for the Transmit Channel Frequency, ± 50 Hz.

      103
    • 4. Press the space bar to unkey the Exciter.

      103
      • 7.2.6 TRANSMIT MODULATION ADJUST

        103
    • 1. Connect a 10 dB pad and modulation analyzer to J402.

      103
    • 2. Press the "FM" and "3 kHz LPF" switches of the modulation analyzer.

      103
    • 3. Inject a 1 kHz sine wave at 400 mV RMS into J2, pin 5 on the back of the Station. NOTE: This t...

      103
    • 4. Adjust U207 with "Up/Dn" and "PgUp/PgDn" keys for 707 mV RMS on P100, pin 29. This waveform sh...

      103
    • 5. Press the space bar to key the Exciter.

      103
    • 6. Set RV401 for ±3 kHz deviation for 25 kHz channels ( ±1.5 kHz deviation for 12.5 kHz channels).

      103
    • 7. Press the space bar to unkey the Exciter.

      103
    • 8. Adjust R237 for a 2V P-P square wave on P100, pin 29 of the TPI. NOTE: This test changes the T...

      103
    • 9. Press the space bar to key the Exciter.

      104
    • 10. Set RV101 for "best" square wave as observed on the modulation analyzer output to the oscillo...

      104
    • 11. Press the space bar to unkey the Exciter.

      104
    • 12. Repeat Steps 1-7. Very little adjustment of RV401 should be needed.

      104
      • 7.3 110W POWER AMPLIFIER ALIGNMENT

        104
      • 7.3.1 INTRODUCTION

        104
      • 7.3.2 DRIVER TUNING AND LIMIT ADJUSTMENTS

        104
    • 1. Connect an antenna or dummy load to the RF port (50 ohm impedance).

      104
    • 2. Connect the: Power supply ground lead to P105 +15V DC lead to P103 +26.5V DC lead to P101 36-p...

      104
    • 3. Set the signal generator to +19 dBm ±0.1 dB. Connect the signal generator to A9.

      104
    • 4. Press the space bar to key the PA.

      104
    • 5. Monitor the voltage on R45 on the RFIB and set R76 for 1.3V DC (see Figure 7-4).

      104
      • 7.3.3 POWER AMPLIFIER TUNING

        104
    • 1. Set RV501 on the PA fully counterclockwise. Set RV502 on the PA fully clockwise, see Figure 7-3.

      104
    • 2. Set Forward Power Adjust RV601 and Reflected Power Adjust RV602 on the power detector board fu...

      104
    • 3. Monitor the voltage on R45 on the RFIB and set R76 for 1.3V DC (see Figure 7-4). This sets the...

      104
    • 4. Set each of the quiescent currents for Q502 and Q503 for 10 mA (DC) each.

      104
    • 5. Program the power output for the correct frequency range as follows: 132-150 MHz 110W 150-178 ...

      104
    • 6. Press the space bar to key the PA. Output power will be approximetly 80W.

      104
    • 7. Monitor the output power and tune C601 and C602 for maximum output power (see Figure 7-3).

      104
    • 8. Set Forward Power Adjust RV601 for rated power (110W or 100W).

      104
    • 9. Press the space bar to unkey the PA.

      104
    • 10. Disconnect the antenna or dummy load from the RF port.

      104
    • 11. Press the space bar to key the PA. NOTE: This will not harm the PA.

      104
    • 12. Adjust Reverse Power Calibration Pot RV602 for equal voltages on W121 and W126 on the RFIB or...

      104
    • 13. Press the space bar to unkey the PA.

      104
  • Figure 7-3 110W POWER AMPLIFIER ALIGNMENT POINTS

    105
  • Figure 7-4 RF INTERFACE BOARD ALIGNMENT POINTS

    105
  • Figure 7-5 POWER EXTENDER CABLES

    105
  • Figure 7-6 RECEIVER TEST SETUP

    106
  • Figure 7-7 EXCITER TEST SETUP

    107
  • Figure 7-8 110W POWER AMPLIFIER TEST SETUP

    108
    • 7.4 FULL REPEATER ALIGNMENT

      109
    • 7.4.1 PERFORMANCE TEST PROGRAM

      109
    • 1. Select the TEST - FULL REPEATER - ALL TEST and press Enter.

      109
      • 7.4.2 REPEATER SETUP

        109
      • 7.4.3 TRANSMITTER TEST/ADJUSTMENTS

        109
    • 1. Press the space bar to key the repeater.

      109
    • 2. The IAC Transmit LED should turn on to indicate the repeater is transmitting (see Figure 7-14).

      109
    • 3. Press the space bar to unkey the repeater.

      109
    • 4. Press the space bar to key the repeater.

      109
    • 5. Check the frequency of the transmitted signal. The frequency should be ±50 Hz of the channel f...

      109
    • 6. Adjust the frequency with Y401 (TCXO) on the Exciter (see Section 7.2.5).

      109
    • 7. Press the space bar to unkey the repeater.

      109
    • 1. Press the space bar to key the repeater.

      109
    • 2. Check the transmit output power. The power can be adjusted from the computer using the cursor ...

      109
    • 3. Press the space bar to unkey the repeater.

      109
      • 7.4.4 RECEIVER TESTS/ADJUSTMENT

        109
    • 1. Check the receiver injection frequency by using a "sniffer" pickup loop, or RF probe connected...

      109
    • 2. Adjust Y401 (TCXO) on the Receiver to within ±50 Hz of the channel frequency + 52.95 MHz.

      109
    • 1. Adjust the RF generator for 100 mV into the Receiver with a modulation tone of 1 kHz at ±3 kHz...

      110
    • 2. On the MAC, insert test cables into J100/J103 and connect to an AC voltmeter.

      110
    • 3. Adjust R237 for 0 dBm (775 mV RMS).

      110
    • 4. On the MAC, connect a 16 ohm load and distortion analyzer to J101 or J104.

      110
    • 5. Adjust R236 for 2.8V RMS and measure the distortion. Distortion should be < 3%.

      110
    • 1. Adjust the RF generator for 100 mV into the Receiver with a modulation tone of 1 kHz at ±3 kHz...

      110
    • 2. On the MAC, connect a 16 ohm load and distortion analyzer to J101 or J104.

      110
    • 3. Adjust R236 for 2.8V RMS.

      110
    • 4. Remove modulation from the RF generator. The measured level must be £ -50 dB.

      110
    • 1. Adjust the RF generator for 100 mV into the receiver with a 1 kHz tone at ±3 kHz deviation 25 ...

      110
    • 2. On the MAC, connect a 16 ohm load and distortion analyzer to J101 or J104.

      110
    • 3. Adjust R236 for 2.8V RMS.

      110
    • 4. Re-adjust RF level for 12 dB SINAD. 12 dB SINAD reading should be £ 0.35 mV.

      110
    • 1. Adjust the RF generator for 100 mV into the receiver with a 1 kHz tone at ±3 kHz, 25 kHz chann...

      110
    • 2. On the MAC, connect a 16 ohm load and distortion analyzer to J101 or J104.

      110
    • 3. Adjust R236 for 2.8V RMS.

      110
    • 4. Set the RF generator output for 5 dB SINAD.

      110
    • 5. On the MAC, adjust R234 so the Receiver just squelches.

      110
    • 6. Increase the RF generator output until the Receiver unsquelches. Reading should be £ 10 dB SINAD.

      110
    • 1. Adjust the RF generator for 100 mV into the receiver with a 100 Hz tone at ±1 kHz, 25 kHz chan...

      110
    • 2. On the MAC, insert test cables into J100/J103 and connect to an AC voltmeter.

      110
    • 3. Adjust R235 to achieve 340 mV RMS.

      110
    • 1. Adjust the RF generator for 100 mV into the receiver with a 1 kHz tone at ±3 kHz deviation, 25...

      110
    • 2. On the MAC, plug a Speaker/Microphone into J101/J102.

      110
    • 3. Adjust R236 until the 1 kHz tone is heard.

      110
    • 1. Adjust the RF generator for 100 mV into the receiver with a 1 kHz tone at ±3 kHz deviation, 25...

      110
    • 2. On the MAC, connect a 16 ohm load and distortion analyzer to J101 or J104.

      110
    • 3. Adjust R236 for 2.8V RMS.

      111
    • 4. Re-adjust the RF generator output for 12 dB SINAD.

      111
    • 5. Press the space bar to key the transmitter.

      111
    • 6. SINAD should not degrade more than 1 dB or to no less than 11 dB SINAD.

      111
    • 7. Press the space bar to unkey the transmitter.

      111
      • 7.4.5 TRANSMIT AUDIO/DATA LEVEL ADJUSTMENTS

        111
    • 1. On the MAC, apply a 1 kHz tone at -3 dBm (578 mV RMS) to P100, pin 32.

      111
    • 2. Insert test cables into J100/J103 and connect to an AC voltmeter.

      111
    • 3. Press the space bar to key the transmitter.

      111
    • 4. Adjust R305 for 0 dBm (775 mV RMS).

      111
    • 5. Press the space bar to unkey the transmitter.

      111
    • 6. On the MAC, apply a 1 kHz tone at +7 dBm (1.73V RMS) to P100, pin 32. (Set modulation analyzer...

      111
    • 7. Press the space bar to key the transmitter.

      111
    • 8. Adjust U149 with the PgUp/PgDn and CurUp/ CurDn keys to set the maximum allowed deviation at ±...

      111
    • 9. Press the space bar to unkey the transmitter.

      111
    • 10. Remove the signal from P100, pin 32.

      111
    • 1. Adjust the RF generator for 100 mV into the receiver with a 1 kHz tone at ±1.5 kHz deviation, ...

      111
    • 2. Press the space bar to key the transmitter.

      111
    • 3. On the MAC, adjust R237 to achieve ±1.5 kHz (±100 Hz) transmit deviation, 25 kHz channels, (±8...

      111
    • 4. Press the space bar to unkey the transmitter.

      111
    • 5. Connect an AC voltmeter to J103 and P100, pin 31 (RX_VOICE).

      111
    • 6. Adjust R238 for -3 dBm (548 mV RMS).

      111
    • 7. Remove the RF generator from the Receiver.

      111
    • 1. Remove VNC cards if present. Set modulation analyzer LPF to 3 kHz. Press the space bar to key ...

      112
    • 2. Adjust U151 with the PgUp/PgDn and CurUp/Cur/ Dn keys to achieve ±1 kHz (±100 Hz) transmit dev...

      112
    • 3. Press the space bar to unkey the transmitter.

      112
    • 1. On the MAC, apply a 1 kHz tone at +7 dBm (1.73V RMS) to P100, pin 32. Set modulation analyzer ...

      112
    • 2. Press the space bar to key the transmitter.

      112
    • 3. Measured deviation should be ±4.5 kHz (±200 Hz), 25 kHz channels (±2.4 kHz (±100 Hz) 12.5 kHz ...

      112
    • 4. Press the space bar to unkey the transmitter. Disconnect all cables.

      112
    • 1. Set modulation analyzer LPF switch to 3 kHz. Press the space bar to key the transmitter.

      112
    • 2. Deviation should be 1.5 kHz to 2.5 kHz, 25 kHz channels, (±0.750 kHz to 1.75 kHz, 12.5 kHz cha...

      112
    • 3. Press the space bar to unkey the transmitter.

      112
    • 1. On the MAC, plug a Speaker/Microphone into J101/J102. Set modulation analyzer LPF switch to 3 ...

      112
    • 2. Press the space bar to key the transmitter.

      112
    • 3. Press the microphone PTT and say "four" loudly into the microphone.

      112
    • 4. Deviation should measure ±3 to ±3.5 kHz, 25 kHz channels, (±0.75 kHz to 1.6 kHz, 12.5 kHz chan...

      112
    • 5. Release the microphone PTT.

      112
    • 6. Press the space bar to unkey the transmitter.

      112
    • 1. On the modulation analyzer press: 300 Hz HPF 3000 Hz LPF FM Pre-Display 750 mS Avg RMS Cal .44...

      112
    • 2. Press the space bar to key the transmitter and measure the Hum and Noise Ratio. The reading sh...

      112
    • 3. Press the space bar to unkey the transmitter.

      112
    • 1. On the modulation analyzer press: FM 50 Hz 15 kHz

      112
    • 2. On the MAC, apply -11.7 dBm at 1 kHz to P100, pin 32.

      112
    • 3. Press the space bar to key the transmitter.

      112
    • 4. Adjust audio level to produce ±1 kHz deviation (25 kHz) or ±0.5 kHz (12.5 kHz deviation).

      112
    • 5. On the modulation analyzer select: 300 Hz 3 kHz 750 ms de-emphasis

      113
    • 6. Distortion is < 2%.

      113
    • 1. Adjust the RF generator for 100 mV into the receiver with a 1 kHz tone at ±1.5 kHz deviation (...

      113
    • 2. Press the space bar to key the transmitter.

      113
    • 3. Adjust R305 for ±1.5 kHz ±100 Hz deviation (25 kHz channels) or 800 Hz (12.5 kHz channels) out...

      113
    • 4. Press the space bar to unkey the transmitter.

      113
      • 7.4.6 VOTER AUDIO LEVEL ADJUSTMENT

        113
    • 1. Inject a 1 kHz tone at -12 dBm (194 mV RMS) into J2, pin 17. This tone represents ±1.5 kHz dev...

      113
    • 2. On the MAC, adjust R233 to obtain a level of -6 dBm (387 mV RMS) at J100/J103.

      113
      • 7.4.7 AUDIO/DATA LEVEL ADJUSTMENTS

        113
    • 1. On the MAC, set S100 and S101, all Sections OFF.

      113
    • 2. Adjust the RF generator for 100 mV modulated with a 1 kHz tone at ±1.5 kHz deviation.

      113
    • 3. Connect a balanced AC voltmeter with a 600 ohm input impedance between balanced lines RXA+ and...

      113
    • 4. On the MAC, adjust R239 for the type of line used. Leased Line/Direct Connect (default) -12 dB...

      113
    • 1. On the MAC, set S100 and S101, all Sections OFF (see Figure 7-9).

      113
  • Figure 7-9 S100 SETTING

    113
    • 2. Inject a 1 kHz tone from a balanced 600 ohm source, at the level determined by the type of lin...

      113
    • 3. On the MAC, adjust R243 to obtain -6 dBm (387 mV RMS) measured at J100/J103.

      113
      • 7.4.8 REPEATER OPERATION

        114
    • 1. On the MPC, switch settings for RS-485 operation are shown in Figure 7-10.

      114
  • Figure 7-10 NEW HSDB SWITCH SETTINGS

    114
    • 2. Verify that the repeater is programmed for "Stand Alone" mode in Setup Parameters-F4 (see Sect...

      114
    • 3. The repeater is now in Normal Operation mode. Verify by the MPC front panel indicators that no...

      114
    • 1. Program an LTR portable or mobile for the following parameters. Home Repeater - Same as repeat...

      114
    • 2. The repeater is now in Normal Operation mode.

      114
    • 3. Key the radio several times on the programmed System/Group. Access should occur every time. (P...

      114
    • 1. The repeater is now in Normal Operation mode.

      114
    • 2. Verify by the MPC front panel indicators that no alarms have occurred (see Table 1-2).

      114
  • Figure 7-11 J2 TERMINAL BLOCK

    114
  • Figure 7-12 MAC ALIGNMENT POINTS

    115
  • Figure 7-13 MAIN PROCESSOR CARD ALIGNMENT POINTS

    116
  • Figure 7-14 INTERFACE ALARM CARD ALIGNMENT POINTS

    117
• SECTION 8 SERVICING

  119
  • 8.1 INTRODUCTION

    119
  • 8.1.1 PERIODIC CHECKS

    119
  • 8.1.2 SURFACE-MOUNTED COMPONENTS

    119
  • 8.1.3 SCHEMATIC DIAGRAMS AND COMPONENT LAYOUTS

    119
  • 8.1.4 REPLACEMENT PARTS LIST

    119
  • 8.1.5 TCXO MODULES NOT SERVICEABLE

    119
  • 8.2 SYNTHESIZER SERVICING

    119
  • 8.2.1 INTRODUCTION

    119
  • 8.2.2 TCXO MODULE

    120
  • 8.2.3 VOLTAGE CONTROLLED OSCILLATOR (VCO)

    120
  • Figure 8-1 LOCK DETECT WAVEFORM

    120
    • 1. The frequency of the modulus control signal on TEST 1, pin 9 should be equal to the N counter ...

      120
    • 2. The duty cycle of the modulus control signal determines the divide number of the prescaler. Th...

      120
  • Figure 8-2 MODULUS CONTROL WAVEFORM

    120
    • 8.2.4 INTERNAL PRESCALER

      120
    • 8.2.5 CALCULATING "N " AND "A " COUNTER DIVIDE NUMBERS

      121
    • 8.3 RECEIVER SERVICING

      121
    • 8.4 TRANSMITTER SERVICING

      121
    • 8.5 POWER SUPPLY SERVICING

      121
  • Figure 8-3 POWER SUPPLY REAR VIEW

    122
  • Figure 8-4 POWER SUPPLY FRONT VIEW

    122
    • 8.5.1 VOLTAGE CHECKS

      123
    • 8.6 CHIP COMPONENT IDENTIFICATION

      123
    • 8.6.1 CERAMIC CHIP CAPACITORS (510-36xx- xxx)

      123
    • 8.6.2 TANTALUM CHIP CAPACITORS (510-26xx-xxx)

      123
    • 8.6.3 CHIP INDUCTORS (542-9000-xxx)

      123
    • 8.6.4 CHIP RESISTORS

      123
  • Figure 8-5 3-DIGIT RESISTOR

    124
  • Table 8-1 CERAMIC CHIP CAP IDENTIFICATION

    124
  • Table 8-2 CHIP INDUCTOR IDENTIFICATION

    125
    • 8.6.5 CHIP TRANSISTORS AND DIODES

      125
    • 8.7 GRAFOIL REPLACEMENT PROCEDURE

      125
• SECTION 9 PARTS LIST

  127