Park Air T6T User Manual
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Park Air T6T User Manual

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T6T Transmitter User Guide
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  • Page 1 T6T Transmitter User Guide Issue 1...
  • Page 2 Handbook Title: T6T Transmitter User Guide Handbook Part Number: 31-360000TX Issue Number: Date of Issue: November 1999 Published By: Park Air Electronics Northfields Market Deeping Peterborough England PE6 8UE Telephone: From UK, 01778 345434 From outside UK, 44 1778 345434...
  • Page 3 Handbook Amendment Record Amendments to this handbook, originated by Park Air Electronics, are listed in the following table. Amendment PAE Change Date Brief Details Number Note Number Equipment Modification Record Modifications to the T6T transmitter are detailed in the following table.
  • Page 4 List of Abbreviations The following abbreviations are used in this user guide: amplitude modulation built-in test decibel digital signal processing elapsed time indicator ICAO international civil aviation organisation kilogram kilo Hertz liquid crystal display milliamp MARC multi-access remote control system mega Hertz millimetre parts per million...
  • Page 5 T6T Transmitter User Guide Section 1 General Information...

  • Page 6: Table Of Contents

    Section 1 Contents Page Chapter 1. Overview Introduction to the T6T Transmitter T6T Handbooks Operational Settings Virtual Front Panel Built-In Tests Transmitter Variants Configuring the T6T Transmitter Chapter 2. Specification Dimensions and Weight RF Characteristics Environmental Power Requirements Chapter 3.

  • Page 7: Chapter 1. Overview Page

    The maintenance kit includes a CD-ROM containing the VFP software and a lead for connecting the radio to a Personal Computer (PC). The CD-ROM also contains the software as loaded into the T6T at the time of sale. This enables the original software to be re-loaded if the transmitter's Digital Signal Processing (DSP) module is ever replaced.

  • Page 8: Operational Settings

    OPERATIONAL SETTINGS Operational settings for the T6T transmitter are configured at the front panel, through the VFP, or through an associated MARC system (or compatible control and data system). At the transmitter, operational settings are selected and displayed using the front panel Scroll/Select switch and the LCD.

  • Page 9: Virtual Front Panel

    Virtual Front Panel As an alternative to setting up the transmitter from the front panel, the T6T's virtual front panel (VFP) software can be used. To use the VFP, an IBM™ compatible PC must be connected to the transmitter (see Fig. 1-1). Using the VFP offers several advantages over setting up from a transmitter's front panel.

  • Page 10: Transmitter Variants

    TRANSMITTER VARIANTS Two variants of the T6T transmitter are available: B6350. This model operates in all modes except in AM-voice when using a 5-carrier offset. The frequency stability of this model is 1 ppm. B6350OPT1. This model operates in all modes including AM-voice when using a 5-carrier offset.
  • Page 11 MARC system. Facilities Remote Signals. Connector Reference Microphone/Diagnostics Connector Connector Microphone/headset for local AM operation. PC to allow use of the VFP Frequency counter for download maintenance purposes. software. Fig. 1-1. T6T Transmitter Configuration T6T General Information Section 1 Page 7...
  • Page 12 Intentionally Blank Section 1 T6T Transmitter User Guide Page 8...

  • Page 13: Chapter 2. Specification

    Chapter 2. Specification This chapter contains the T6T transmitter's specification that is common to all operating modes. Specifications relevant to specific operating modes are contained in the section applicable to the required operating mode. DIMENSIONS AND WEIGHT The dimensions and weight of the T6T transmitter are: Width 483 mm (19 inches).

  • Page 14: Environmental

    24 and 32 V. From 24 down to 21.6 V the output power gradually decreases. dc supply current 15 amp (maximum) with a 28 volt dc input supply. Section 1 T6T Transmitter User Guide Page 10...

  • Page 15: Chapter 3. Controls, Indicators, And Connectors

    If a fault is detected, the Alarm indicator lights and the Ready indicator becomes unlit; the transmitter cannot be used. Ready Indicator A green indicator that lights when the transmitter is ready for use and no BIT faults have been detected. T6T General Information Section 1 Page 11...

  • Page 16: Standby Indicator

    An SMB jack socket that allows a high impedance frequency counter to monitor the transmitter's reference frequency. This connector is used only for maintenance purposes. The instructions for checking and adjusting the reference frequency are given in the T6T maintenance handbook. Microphone/Diagnostics Connector...

  • Page 17: Scroll/Select Switch And Lcd

    F r e q 1 2 3 . 0 0 0 M H z C h a n P w r I I I I I I I I I I I I T6T General Information Section 1 Page 13...

  • Page 18: Rear Panel

    Caution! Before connecting an ac input supply to the transmitter, the ac input taps must be set to suit the local mains supply (see page 22). (SA3536) Fig. 1-4. AC Mains Connector Section 1 T6T Transmitter User Guide Page 14...

  • Page 19: Dc Input Connector

    Connections should be made using a 15-way D-type plug PAE part Fig. 1-6. Facilities Connector number: 20-01150100 (plug), and 20-09150101 (cover). These are CN5 Pin-Out supplied with the transmitter as item 3 (see page 22). T6T General Information Section 1 Page 15...

  • Page 20: Marc Port Cn6

    Connections should be made using a 25-way D-type plug PAE part number: 20-01250100 (plug), and 20-09250101 (cover). Fig. 1-8 Computer Port CN7 Pin-Out Antenna Connector An N-type 50 ohm coaxial socket used to connect the antenna's feeder cable. Section 1 T6T Transmitter User Guide Page 16...
  • Page 21 The active polarity is set from the front panel. An audio output for connection to a recording system. The output Tape Output is nominally -10 dBm into 100 ohm. Not Used T6T General Information Section 1 Page 17...
  • Page 22 500 mA, is used as the power source for the MARC RSE 2 equipment. Data In (+) RS422 data line. Data In (-) RS422 data line. Data Out (+) RS422 data line. Data Out (-) RS422 data line. Section 1 T6T Transmitter User Guide Page 18...
  • Page 23 Input C RS232 Input Input D RS232 Input Output A RS232 Output Output B RS232 Output Output C RS232 Output Output D RS232 Output Ground 0 volt Not used Not used Not used T6T General Information Section 1 Page 19...
  • Page 24 Intentionally Blank Section 1 T6T Transmitter User Guide Page 20...

  • Page 25: Chapter 4. Installation Procedures

    Chapter 4. Installation Procedures This chapter details the installation procedures for a T6T transmitter that are necessary irrespective of which operating mode is to be used. WARNING. LETHAL VOLTAGES! The instructions given in this chapter involve connecting lethal voltages to the transmitter.

  • Page 26: Initial Inspection Of The Transmitter

    If damage is evident, contact PAE immediately and retain the original transit packaging. The following items should be included with the transmitter: Item 1. One copy of the T6T User Guide (this handbook). Item 2. An unterminated IEC mains connector.

  • Page 27: Selecting The Correct Ac Input Tap

    If the transmitter is to be operated in AM-voice mode, go to the next procedure. If operating in other modes, refit the top cover. Fig. 1-9. Location of Input Tap Terminal Block DEV083-08 T6T General Information Section 1 Page 23...

  • Page 28: Selecting The Keying Method

    This procedure is applicable only to AM-voice mode. A number of different ‘remote’ or ‘phantom’ keying configurations are possible with the T6T transmitter. Internal jumpers must be correctly set to suit the required configuration. To do this, refer to section 2, chapter 3, of this user guide and follow the procedure ‘Selecting the Applicable Keying Method’.

  • Page 29: Fitting A Radio Into An Equipment Rack

    Fig. 1-11. Telescopic Slide Fixing Points (DEV083-09) CONNECTING REMOTE FACILITIES Remote facilities connections depend on the transmitter's operating mode. To determine the required remote connections, refer to chapter 3 of the section applicable to the operating mode. T6T General Information Section 1 Page 25...

  • Page 30: Chassis Stud Connection

    IEC publication 245 titled ‘Rubber Insulated Cables of Rated Voltages up to and Including 450/750 V (designation H05 RR-F)’. The T6T transmitter is a Class 1 equipment. The ac supply cable should have a green-and-yellow protective earthing conductor electrically connected to the protective earthing terminal of the equipment connector and the mains plug.

  • Page 31: Dc Supply Connection

    The antenna feeder cable connects to the transmitter’s rear panel N-type antenna connector (see Fig. 1-3 on page 14). SWITCHING ON When installation is complete, the transmitter should be switched on at the rear panel Power switch (see page 14). T6T General Information Section 1 Page 27...
  • Page 33 T6T Transmitter User Guide Section 2 AM-Voice Mode...
  • Page 34 Allocating Channel Numbers to Specified Frequencies To Recall Channel Frequencies To initiate an Interruptive BIT Test To View BIT Pages and Advise Screen Elapsed Time Indicator Displaying the Transmitter's Internal Reference Frequency Screen Software Versions Screen Section 2 T6T AM-Voice Operation Page 2...

  • Page 35: Introduction To Am-Voice Mode

    This chapter provides an introduction to using the T6T transmitter in AM-voice mode. INTRODUCTION TO AM-VOICE MODE In AM-voice mode, the T6T transmitter operates in the frequency range 118 to 136.975 MHz using 25 kHz or 8.33 kHz channel spacing. The transmitter produces a 50 watt carrier output that can be reduced, in 1 watt steps, to 5 watts.

  • Page 36: Operational Settings

    Setting the LCD backlight BASIC CONFIGURATION Fig. 2-1 shows the basic T6T transmitter connections for AM voice operation. If the transmitter is part of a MARC system, or other compatible control and data system, refer to ‘Configuration for Operation with MARC’...

  • Page 37: Remote Operation

    PC is connected for maintenance purposes. Maintenance using a PC connected to the Headset/Diagnostics connector is outside the scope of this user guide. Full information is contained in the T6T maintenance handbook. T6T AM-Voice Operation...

  • Page 38: Configuration For Operation With Marc

    CONFIGURATION FOR OPERATION WITH MARC When the T6T transmitter is used with a MARC system or other compatible control and data system, the remote signals are connected through the rear panel MARC connector (see Fig. 2-2). In this configuration, the rear panel Facilities and Computer Port connectors are not used unless some auxiliary signals available at the Facilities connector are required.

  • Page 39: Chapter 2. Am-Voice Specification

    10% of the set level. VOGAD has an attack time between 20 and 50 ms measured with a 10 dB step to 15 dB into VOGAD, and a decay time greater than 2 seconds. T6T AM-Voice Operation Section 2 Page 7...
  • Page 40 Intentionally Blank Section 2 T6T AM-Voice Operation Page 8...

  • Page 41: Chapter 3. Am-Voice Installation

    During installation all precautions necessary to prevent ESSD damage must be taken. INTRODUCTION The procedures in this chapter that allow a T6T transmitter to be installed for AM-voice operation are: Selecting the applicable keying method Connecting remote facilities. T6T AM-Voice Operation...

  • Page 42: Selecting The Applicable Keying Method

    "Remote Keying" and "Phantom Keying". When the jumpers have been configured, refit the transmitter's top cover. Front Panel T6T Transmitter with top cover removed showing position of DSP module and jumpers JP8...

  • Page 43: Remote Keying Configurations

    +10 to +50 Volt Keying with Positive Going Active Signal T6T Transmitter Phantom Keying Remote Keying +10 to +50 V [Front panel PTT Polarity = NEG] +10 to +50 Volt Keying with Negative Going Active Signal T6T AM-Voice Operation Section 2 Page 11...

  • Page 44: Phantom Keying Configurations

    Note that the audio lines in the illustrations connect to the transmitter's Facilities connector CN5. If phantom keying is required when using a MARC, or compatible control and data system, the lines connect to the MARC connector CN6 pins 2 and 3. Section 2 T6T AM-Voice Operation Page 12...
  • Page 45 Phantom Keying Remote Keying [Front panel PTT Polarity = POS] Phantom Keying Remote Keying [Front panel PTT Polarity = POS] Fig. 2-4. Phantom Keying Arrangements T6T AM-Voice Operation Section 2 Page 13...

  • Page 46: Connecting The Remote Facilities

    If the transmitter is being used in the ‘Basic Configuration’ (see Fig. 2-1 on page 5) remote signals are terminated on the rear panel Facilities connector CN5. For configurations where the T6T transmitter is being used with a MARC system, or other compatible data and control system, this procedure should be ignored;...
  • Page 47 Line In (-) Audio Line L2 Unregulated Supply Unregulated Supply Input Data In (+) Data Out (+) Data In (-) Data Out (-) Data Out (+) Data In (+) Data Out (-) Data In (-) T6T AM-Voice Operation Section 2 Page 15...
  • Page 48 Intentionally Blank Section 2 T6T AM-Voice Operation Page 16...

  • Page 49: Chapter 4. Am-Voice Operational Settings

    Chapter 4. AM-Voice Operational Settings This chapter details how the T6T transmitter is set up for AM voice operation from the front panel. It also details how to set the transmitter in and out of standby mode. The transmitter can also be set up through a MARC system, or by using the VFP. Both of these methods are outside the scope of this handbook;...

  • Page 50: Screen Protocol

    Back When Back is selected, you are returned to the previous menu. Exit When Exit is selected, you are returned to the Main screen. Section 2 T6T AM-Voice Operation Page 18...
  • Page 51 1 to 100 Page 36 Initiate a BIT test Page 37 View BIT pages and advise screen Page 38 Elapsed time indication Page 39 Display internal reference Page 40 frequency screen Software versions Page 41 T6T AM-Voice Operation Section 2 Page 19...

  • Page 52: Menu Lock Screen

    To exit the system lock screen: Turn the switch to highlight OK, then press the switch. You are returned to the main screen. Wait for the 30 second timeout to expire. You are returned to the main screen. Section 2 T6T AM-Voice Operation Page 20...

  • Page 53: Notes For Setting Up The Transmitter

    8.33 kHz 118.160 MHz 118.1666 MHz 8.33 kHz 118.165 MHz 118.1750 MHz 25 kHz 118.175 MHz 118.1750 MHz 8.33 kHz 118.180 MHz 118.1833 MHz 8.33 kHz 118.185 MHz 118.1916 MHz 8.33 kHz 118.190 MHz T6T AM-Voice Operation Section 2 Page 21...

  • Page 54: Line Level

    The VOGAD and mute thresholds are preset at 10 dB and 15 dB respectively below the line level setting. Table 2-4 Relationship between Line Level, Vogad, and Mute Threshold Line Level Average Speech Sine Wave Level Vogad Setting Level Mute Threshold Threshold (dBm) (dBm) (dBm) Section 2 T6T AM-Voice Operation Page 22...

  • Page 55: To Enter Standby Mode

    Y E S Check that the LCD blanks, and the front panel STANDBY indicator lights. The transmitter is now in standby mode. To exit standby, see the next procedure. T6T AM-Voice Operation Section 2 Page 23...

  • Page 56: To Exit Standby Mode

    F r e q 1 2 3 . 0 0 0 M H z displayed that front panel STANDBY indicator is unlit. P w r The transmitter is now ready for normal use. Section 2 T6T AM-Voice Operation Page 24...

  • Page 57: Am Voice Settings Procedure

    M o d e : V o i c e highlighted. Then press the switch to display S e t t i n g s the mode specific Settings menu. C a n c e l T6T AM-Voice Operation Section 2 Page 25...
  • Page 58 Turn the switch clockwise or anti-clockwise to > > increment or decrement the value. When the required value is displayed, press the switch. Turn the switch clockwise until the next screen is displayed and Mute is highlighted. Section 2 T6T AM-Voice Operation Page 26...
  • Page 59 Note that transmitter type B6350OPT1 must be used if selecting an 8 kHz carrier offset, and a separate setting up procedure must be completed. This procedure, which involves the use of external test equipment, is detailed in the T6T transmitter maintenance handbook. To select the required offset (0.0 kHz must be...
  • Page 60 13. To exit the AM Voice Settings Procedure, turn the switch to highlight OK, then press the switch. You are returned to the Main screen. When this procedure is complete, go to the General Transmitter Settings procedure starting on the next page. Section 2 T6T AM-Voice Operation Page 28...

  • Page 61: General Transmitter Settings

    M o d e the switch until Display is highlighted. R e f e r e n c e F r e q D i s p l a y > > Function Menu T6T AM-Voice Operation Section 2 Page 29...
  • Page 62 On and Off. When the correct setting is displayed turn the switch clockwise to highlight OK, then press the switch. You are C a n c e l returned to the Function menu. Section 2 T6T AM-Voice Operation Page 30...
  • Page 63 When the required value is displayed, press the switch. Turn the switch clockwise until OK is highlighted, then press C a n c e l the switch. You are returned to the Function menu. T6T AM-Voice Operation Section 2 Page 31...
  • Page 64 [Factory default setting: 9600] The baud rate must be set when the T6T transmitter is connected to a MARC system (or other compatible data and control system). The rate can be set to 300, 600, 1200, 2400, 4800, or 9600 baud.
  • Page 65 10. To exit the General Transmitter Settings Procedure, turn the switch to highlight Exit, then press the switch. You are returned to the Main screen. When this procedure is complete, go to Setting the Operating procedure starting on the next page. T6T AM-Voice Operation Section 2 Page 33...

  • Page 66: Setting The Operating Frequency

    Turn the switch clockwise until either Cancel or OK is highlighted. Then press the switch. If cancel is selected, the new frequency entered in this procedure is ignored. If OK is selected, the transmitter operates on the new frequency. Section 2 T6T AM-Voice Operation Page 34...

  • Page 67: Allocating Channel Numbers To Specified Frequencies

    The process of allocating frequency channels can be simplified by using the VFP. The VFP software is contained in the T6T transmitter's maintenance kit. From the Main screen, press the switch to F r e q u e n c y display the Options menu.

  • Page 68: To Recall Channel Frequencies

    The Main screen will then be displayed F r e q 1 2 3 . 4 5 0 M H z showing the transmitter's selected channel C h a n number corresponding operating frequency. P w r Section 2 T6T AM-Voice Operation Page 36...

  • Page 69: To Initiate An Interruptive Bit Test

    When the test has finished, check that the transmitter's front panel Alarm indicator is not lit. After a BIT test, BIT screens are automatically displayed. The screens are shown on the next page. T6T AM-Voice Operation Section 2 Page 37...

  • Page 70: To View Bit Pages And Advise Screen

    Last BIT Screen Further detail regarding the Advise screen P l e a s e C h e c k is given in the T6T transmitter maintenance handbook. 1 : A n t e n n a 2 : P A C t r l .

  • Page 71: Elapsed Time Indicator

    I n i t i a t e minutes. B I T V i e w E T I 0 0 1 2 3 : 5 9 B a c k E x i t T6T AM-Voice Operation Section 2 Page 39...

  • Page 72: Displaying The Transmitter's Internal Reference Frequency Screen

    Caution! This procedure is included only for informational purposes. The reference frequency setting must not be altered unless following the procedure given in the T6T maintenance handbook. External test equipment is required to set this parameter. Failure to comply with this caution may render the transmitter inoperable.

  • Page 73: Software Versions Screen

    B o o t V e r s i o n the Software Versions screen. View the other software modules as required. S 0 2 7 1 V 0 0 0 1 Boot Version Screen T6T AM-Voice Operation Section 2 Page 41...

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