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Pub. 43004-002B
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
ITR1000A Basic Tone Remote Desk Set
User and Installation Manual
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA
610-777-1374
800-492-1212
Fax: 610-796-5954
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ISIT WWW
GAI
TRONICS
COM FOR PRODUCT LITERATURE AND MANUALS
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Summary of Contents for GAI-Tronics ITR1000A
- Page 1 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 ITR1000A Basic Tone Remote Desk Set User and Installation Manual GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA 610-777-1374 800-492-1212 Fax: 610-796-5954...
- Page 2 (b) Buyer’s claim is made within the warranty period set forth above, Buyer may return such goods to GAI-Tronics’ nearest depot repair facility, freight prepaid, at which time they will be repaired or replaced, at Seller’s option, without charge to Buyer.
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Page 3: Table Of Contents
EPAIR FCC I ..........................1 NTERFERENCE ARNING CMOS I ..................2 ANDLING OF NTEGRATED IRCUIT EVICES DESCRIPTION ................................3 ITR1000A B ............3 EATURES AND ENEFITS OF THE ASIC EMOTE .............................4 HYSICAL ESCRIPTION ............................4 UTTON ANEL F1, F2, F3, and F4 Frequency Buttons ........................4 Volume Buttons..............................4... - Page 4 Table of Contents ITR1000A Basic Tone Remote Desk Set Line Considerations - Private Circuit........................13 Circuit Conditioning ............................13 ..........................13 ETTINGS AND DJUSTMENTS Line (Receive Audio) Input Level Adjustment.....................13 Line Output (Transmit) Level Adjustment......................14 Audio Level Setting Procedure ...........................14 2175 Hz Filter Adjustment..........................15 Handset Microphone Adjustment........................15...
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Page 5: Foreword
Foreword Scope of Manual This manual offers descriptive data and service information for the ITR1000A 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, specifically identifies GAI-Tronics equipment. -
Page 6: Safe Handling Of Cmos Integrated Circuit Devices
Foreword ITR1000A Basic Tone Remote Desk Set 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 integrated circuits are vulnerable to damage from static charges. -
Page 7: Description
Description Features and Benefits of the ITR1000A Basic Tone Remote Desk Set Feature Benefit Adjustable receive input Allows flexibility with different radio systems and user sensitivity and transmit output environments where radio output levels, line losses, and noise level factors vary. -
Page 8: Physical Description
ITR1000A Basic Tone Remote Desk Set Physical Description The ITR1000A 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 wall. -
Page 9: Control Button
ITR1000A Basic Tone Remote Desk Set Description Control Button button is used in conjunction with the Up or Down buttons to control the VOLUME VOLUME local speaker. It is also used during programming. Intercom Button The Intercom button, labeled IC, allows communication between desk set users without transmission over the radio. -
Page 10: Programming Switches
Description ITR1000A Basic Tone Remote Desk Set 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: Off (Default) SWA-1 Whether the handset off-hook Enabled... -
Page 11: Itr1000A Basic Tone Remote Desk Set Accessories
Desk Microphone* XDM002A Footswitch* XFS002A Lightweight Headset* XHS002A *These accessories require the use of the XAAB002A Audio Accessory Box ITR1000A Basic Tone Remote Desk Set Field Replacement Items Description Part No. Handset with Cord, Black HANDSET-BLACK Replacement Power Supply 3308-50008-00... -
Page 12: Performance Specifications
Description ITR1000A Basic Tone Remote Desk Set Performance Specifications Color ..............................Black Physical size..................... 7.6 W × 8.9 L × 4.7 H inches Weight..............................2.4 lbs. Temperature range ......................-35° C to +70° C Humidity ...................... 95% at 50° C (non-condensing) Line impedance......................... -
Page 13: Operation
Operation Operational Description The ITR1000A 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, channel changes, and monitor. -
Page 14: Initiating Calls
Operation ITR1000A Basic Tone Remote Desk Set Initiating Calls Before initiating a call, press the button to verify that the radio channel is clear. To initiate a MONITOR call, press the button or the handset push-to-talk (PTT) pressbar. The TRANSMIT TRANSMIT illuminates when transmitting. -
Page 15: Installation
Sample ITR1000A Installation Diagram - Shown connected in parallel within one building. Mechanical Receipt Inspection The ITR1000A 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 company. -
Page 16: Equipment Required
Power Connections Power is applied to the ITR1000A from the provided ac wall transformer that is supplied with the unit. Power is applied to TS1-6(+) and TS1-5(-). -
Page 17: Line Considerations - Private Circuit
ITR1000A Basic Tone Remote Desk Set Installation Line Considerations - Private Circuit If leased lines from your local telephone company are used between the desk sets and the ITA2000 or similar tone remote adapter, the telephone company (Local Exchange Carrier) may request a Facility Interface Code (FIC). -
Page 18: Line Output (Transmit) Level Adjustment
Installation ITR1000A Basic Tone Remote Desk Set Line Output (Transmit) Level Adjustment This process ensures the correct audio signal level is output to the remote control line during transmission. 1. Disconnect the handset from the desk set. 2. Apply a 1000 Hz at 44 mV ac signal into the handset mic terminals (red = handset mic; black = ground). -
Page 19: 2175 Hz Filter Adjustment
ITR1000A Basic Tone Remote Desk Set Installation 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. -
Page 20: Programming
Installation ITR1000A Basic Tone Remote Desk Set Programming Front panel programming and the diagnostic mode are accessed by keypress 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 21: Function Tone Frequencies
ITR1000A Basic Tone Remote Desk Set Installation Function Tone Frequencies Duration 2050 Hz 1950 Hz 1850 Hz 1750 Hz 1650 Hz 1550 Hz 1450 Hz 1350 Hz 1250 Hz 1150 Hz 1050 Hz 950 Hz 850 Hz 750 Hz 650 Hz... -
Page 22: Programming Mode
Installation ITR1000A Basic Tone Remote Desk Set Programming Mode : The initial keypress 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... -
Page 23: Theory Of Operation
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 microcontroller inputs AN0 and AN1. -
Page 24: Speaker Volume Control
Theory of Operation ITR1000A Basic Tone Remote Desk Set Each control tone frequency is synthesized as a square wave by microcontroller U1. This signal is then scaled to the correct amplitude at inverting amplifier U19a. By means of outputs PA5 and PA6, the microcontroller selects either high level, function tone level, or low level. -
Page 25: Troubleshooting
Troubleshooting Troubleshooting the ITR1000A 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 adapter. -
Page 26: Fuse Replacement
Troubleshooting ITR1000A Basic Tone Remote Desk Set Problem Possible Solution No receive audio on local Ensure that the tone remote adapter is supplying audio onto the private speaker or handset. circuit. Ensure that the desk set's local speaker is not muted. Muting is indicated by a flashing frequency button. -
Page 27: Main Circuit Board
Main Circuit Board 01/05... - Page 28 Main Circuit Board ITR1000A Basic Tone Remote Desk Set...
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Page 29: Schematics
Schematics 01/05... - Page 30 Schematics ITR1000A Basic Tone Remote Desk Set Tone Desk Set Microprocessor Section Schematic - Sheet 1...
- Page 31 ITR1000A Basic Tone Remote Desk Set Schematics Tone Desk Set I/O Section Schematic Diagram - Sheet 2...
- Page 32 Schematics ITR1000A Basic Tone Remote Desk Set Tone Desk Set Audio Section 1 Schematic Diagram - Sheet 3...
- Page 33 ITR1000A Basic Tone Remote Desk Set Schematics Tone Desk Set Audio Section 2 Schematic Diagram - Sheet 4...
- Page 34 Schematics ITR1000A Basic Tone Remote Desk Set Tone Desk Set Audio Section 3 Schematic Diagram - Sheet 5...
- Page 35 ITR1000A Basic Tone Remote Desk Set Schematics Tone Desk Set Power Supply Schematic - Sheet 6...
- Page 36 Schematics ITR1000A Basic Tone Remote Desk Set OTES...
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Page 37: Definitions And Acronyms
Definitions and Acronyms Term Definition 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 associated subaudible tone identifies it as belonging to the radio's user group. - Page 38 Notes: ITR1000A Basic Tone Remote Desk Set...
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