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GAI-Tronics ITR1000-001 User And Installation Manual

Manual is about: Basic Tone Remote Desk Set with Line Select

Summary of ITR1000-001

  • Page 1

    Pub. 43004-032c gai-tronics corporation 400 e. Wyomissing ave. Mohnton, pa 19540 usa 610-777-1374 800-492-1212 fax: 610-796-5954 v isit www . Gai - tronics . Com for product literature and manuals g a i - t r o n i c s ® c o r p o r a t i o n a h u b b e l l c o m p a n y itr1000-001 basic tone remo...

  • Page 2

    02/12 pub. 43004-032c i confidentiality notice this manual is provided solely as an operational, installation, and maintenance guide and contains sensitive business and technical information that is confidential and proprietary to gai-tronics. Gai-tronics retains all intellectual property and other ...

  • Page 3: Table of Contents

    02/12 pub. 43004-032c ii table of contents foreword ............................................................................................................................................................... 1 s cope of m anual .......................................................................

  • Page 4

    Table of contents itr1000-001 basic tone remote desk set 02/12 pub. 43004-032c iii p ower c onnections .............................................................................................................................................. 12 l ine c onnections ...................................

  • Page 5: Foreword

    1 02/12 foreword scope of manual this manual offers descriptive data and service information for the itr1000-001 basic tone remote desk set. Service diagrams and printed circuit board details are a part of this service manual. Nomenclature the model number, located on the nameplate on the bottom, sp...

  • Page 6

    Foreword itr1000-001 basic tone remote desk set 02/12 2 safe handling of cmos integrated circuit devices many of the integrated circuit devices used in communications equipment are of the complementary metal oxide semiconductor (cmos) type. Because of their high open circuit impedance, cmos integrat...

  • Page 7: Description

    3 02/12 description features and benefits of the itr1000-001 basic tone remote desk set feature benefit adjustable receive input sensitivity and transmit output level allows flexibility with different radio systems and user environments where radio output levels, line losses, and noise factors vary....

  • Page 8

    Description itr1000-001 basic tone remote desk set 02/12 4 physical description the itr1000-001 basic tone remote desk set, when used with a tone remote adapter such as the ita2000, provides options for remote control of base station radios. It can be used as a desk set or mounted vertically on a wa...

  • Page 9

    Itr1000-001 basic tone remote desk set description 5 02/12 f1, f2, f3, and f4/ls frequency buttons normally, these buttons are used to change frequencies on the selected radio. However, the use and function of these buttons are dependent on your radio’s capabilities. Whenever a frequency button is p...

  • Page 10

    Description itr1000-001 basic tone remote desk set 02/12 6 programming switches a set of programming switches is included on the desk set. The switch settings are as follows: swa switch settings table switch determines: on off (default) swa-1 whether the handset off-hook monitor is enabled or disabl...

  • Page 11

    Itr1000-001 basic tone remote desk set description 7 02/12 accessories description part no. Tone remote adapter ita2000a audio accessory box xaab002a desk microphone* xdm004a footswitch* xfs002a headset* (requires coiled cord) xhs003c headset coiled cord* xcc004b *these accessories require the use o...

  • Page 12

    Description itr1000-001 basic tone remote desk set 02/12 8 performance specifications color ..................................................................................................................................................... Black physical size .........................................

  • Page 13: Operation

    9 02/12 operation operational description the itr1000-001 basic tone remote desk set provides radio system control from a remote location. The desk set control tones are sent to the tone remote adapter through a private or leased line, and are used to control radio functions such as transmit, channe...

  • Page 14

    Operation itr1000-001 basic tone remote desk set 02/12 10 monitor button press the monitor button (ctcss/cdcss disable) to place the radio in the monitor mode. Press this button before making a call to verify a clear radio channel is available. Transmit button press the transmit button to place the ...

  • Page 15: Installation

    11 02/12 installation planning the installation mechanical receipt inspection the itr1000-001 basic tone remote desk set is shipped in a cardboard container with inserts. Thoroughly inspect it as soon as possible after delivery. In-transit damage should be immediately reported to the transportation ...

  • Page 16

    Installation itr1000-001 basic tone remote desk set 02/12 12 equipment required test equipment rf service monitor ac voltmeter with db ranges for measuring audio levels #1 phillips screwdriver 1/8-inch flat blade screwdriver documentation base station’s tone remote adapter manual these installation ...

  • Page 17

    Itr1000-001 basic tone remote desk set installation 13 02/12 line connections to make the required line connections, a cable with a tinned bare leads stripped to about 3/8-inch or pin terminal is necessary. With the housing opened, route the lines through the slot in the housing bottom. Using a smal...

  • Page 18

    Installation itr1000-001 basic tone remote desk set 02/12 14 settings and adjustments the desk set housing must be open with the circuit board exposed. These procedures assume that the base station has been properly adjusted. Line (receive audio) input level adjustment this ensures that the tone rem...

  • Page 19

    Itr1000-001 basic tone remote desk set installation 15 02/12 audio level setting procedure 1. Set up an rf signal generator on the receive frequency with a 1 khz tone set to system reference modulation applied to the station antenna. 2. Apply sufficient rf level to ensure a fully quieted radio chann...

  • Page 20

    Installation itr1000-001 basic tone remote desk set 02/12 16 2175 hz filter adjustment this setting is factory adjusted and should only need readjustment if the notch filter circuitry needs repairs. Perform the following steps to make adjustments: 1. Cycle power to the desk set. 2. While all leds ar...

  • Page 21

    Itr1000-001 basic tone remote desk set installation 17 02/12 programming front panel programming and the diagnostic mode are accessed by key press combinations entered within 3 seconds of power up. During this period, all of the leds illuminate as an indication that programming changes can be made. ...

  • Page 22

    Installation itr1000-001 basic tone remote desk set 02/12 18 high level guard tone durations f1 f2 f3 f4 duration off off off off 120 ms off off off on 200 ms off off on off 300 ms off off on on 400 ms off on off off 500 ms function tone durations f1 f2 f3 f4 duration off off off off 40 ms off off o...

  • Page 23

    Itr1000-001 basic tone remote desk set installation 19 02/12 function tone frequencies f1 f2 f3 f4 duration off off off off 2050 hz off off off on 1950 hz off off on off 1850 hz off off on on 1750 hz off on off off 1650 hz off on off on 1550 hz off on on off 1450 hz off on on on 1350 hz on off off o...

  • Page 24

    Installation itr1000-001 basic tone remote desk set 02/12 20 programming mode n ote : the initial key press must be made within 3 seconds of power up. The desk set automatically exits the program mode and returns to normal operation after 5 minutes. Programming function key press adjust and program ...

  • Page 25: Theory Of Operation

    21 02/12 theory of operation digital circuits on power-up, microcontroller u1 reads switch swa through tri-state buffer u3. Switch readings determine certain operating characteristics of the desk set. Analog-to-digital conversions each keyboard button is associated with a particular voltage level at...

  • Page 26

    Theory of operation itr1000-001 basic tone remote desk set 02/12 22 the microcontroller selects the active microphone based on the state of the hookswitch. Microphone audio is scaled through u12d and gated to the compressor circuit consisting of u11, q8, and associated components. Microphone audio a...

  • Page 27: Troubleshooting

    23 02/12 troubleshooting troubleshooting the itr1000-001 basic tone remote desk set the following is a list of potential problems you may encounter and possible solutions. Problem possible solution general problems. Ensure that there is a valid circuit line path from the desk set to the tone remote ...

  • Page 28

    Troubleshooting itr1000-001 basic tone remote desk set 02/12 24 problem possible solution no receive audio on local speaker or handset. Ensure that the tone remote adapter is supplying audio onto the private circuit. Ensure that the desk set’s local speaker is not muted. Muting is indicated by a fla...

  • Page 29: Main Circuit Board

    25 02/12 main circuit board.

  • Page 30

    Main circuit board itr1000-001 basic tone remote desk set 26.

  • Page 31: Schematics

    27 02/12 schematics.

  • Page 32

    Schematics itr1000-001 basic tone remote desk set 28 tone desk set microprocessor section schematic - sheet 1.

  • Page 33

    Itr1000-001 basic tone remote desk set schematics 29 tone desk set i/o section schematic diagram - sheet 2.

  • Page 34

    Schematics itr1000-001 basic tone remote desk set 30 tone desk set audio section 1 schematic diagram - sheet 3.

  • Page 35

    Itr1000-001 basic tone remote desk set schematics 31 tone desk set audio section 2 schematic diagram - sheet 4.

  • Page 36

    Schematics itr1000-001 basic tone remote desk set 32 tone desk set audio section 3 schematic diagram - sheet 5.

  • Page 37

    Itr1000-001 basic tone remote desk set schematics 33 tone desk set power supply schematic - sheet 6.

  • Page 38

    Schematics itr1000-001 basic tone remote desk set 34.

  • Page 39: Definitions and Acronyms

    35 02/12 definitions and acronyms term definition csq carrier squelch ctcss a means of grouping users of a common radio channel. Subaudible tones are transmitted with audio; a particular radio’s speaker (or the speakers of a group of radios) will unmute to broadcast a transmission only if the associ...

  • Page 40

    Notes: itr1000-001 basic tone remote desk set 36.