Schematics
ITR1000-001 Basic Tone Remote Desk Set
28
Tone Desk Set Microprocessor Section Schematic - Sheet 1
Page 1: ...19540 USA 610 777 1374 800 492 1212 Fax 610 796 5954 VISIT 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 Ba...
Page 2: ...t shall GAI Tronics warranty obligations with respect to services exceed 100 of the total cost of services provided hereunder Limitations Exclusions The warranty on any equipment supplied hereunder is...
Page 3: ...5 HANDSET 5 PROGRAMMING SWITCHES 6 SWA Switch Settings Table 6 LINE SELECT F4 LS 6 ACCESSORIES 7 FIELD REPLACEMENT ITEMS 7 PERFORMANCE SPECIFICATIONS 8 OPERATION 9 OPERATIONAL DESCRIPTION 9 FRONT PANE...
Page 4: ...r Adjustment 16 Handset Microphone Adjustment 16 DESK SET REASSEMBLY 16 PROGRAMMING 17 High Level Guard Tone Durations 18 Function Tone Durations 18 Function Tone Frequencies 19 PROGRAMMING MODE 20 TH...
Page 5: ...malfunctioning equipment should be returned to the factory for repair Please call 1 800 492 1212 to obtain a Return Authorization number published repair prices and shipping instructions NOTE A purch...
Page 6: ...peted areas dry environments and certain types of clothing silk nylon etc because they contribute to static build up Similarly disconnect the test probe prior to removing the ground lead 5 All electri...
Page 7: ...io channels Selectable off hook local speaker User can choose continuous local speaker when handset is off hook Programmable 3 or 4 frequency function control Any one of 16 EIA standard tones can be p...
Page 8: ...s for remote control of base station radios It can be used as a desk set or mounted vertically on a wall All connections are made inside the unit Power is supplied by an ac wall transformer that is pr...
Page 9: ...unction keys ControlButton The CTL button is used in conjunction with the VOLUME Up or VOLUME Down buttons to control the local speaker It is also used during programming IntercomButton The Intercom b...
Page 10: ...must be present for proper operation SWA 5 Continuous live speaker Enabled Disabled SWA 6 Whether line termination is enabled or disabled Disabled Enabled SWA 7 Guard tone keying Special application...
Page 11: ...se accessories require the use of the XAAB002A Audio Accessory Box Field Replacement Items Description Part No Handset with Cord Black HANDSET BLACK Replacement Power Supply 120 V ac 12 V dc 1 amp 404...
Page 12: ...Less than 45 dB below rated outputs Audio output to speakers 1 watt minimum with level in compression range Audio distortion Less than 3 THD Maximum number of remotes 10 Control functions Guard tone...
Page 13: ...ne select button Pressing the button toggles selection between line 1 and line 2 If the button is illuminated line 2 is selected if extinguished line 1 is selected This function must be enabled by mov...
Page 14: ...shes and the desk set returns to the receive mode Receiving Calls When power is applied the desk set is in the receive mode allowing receive audio to be heard through the speaker or handset The desk s...
Page 15: ...To wall mount the desk set remove the four bottom screws from the base and then rotate the base 180 Reinstall the four screws to the base and rotate the handset hook located on the front of the unit...
Page 16: ...lation on the wire Communications cables and in building wiring should be listed and marked for the purpose according to NEC Article 800 Telephone Line Lightning and Over voltage Protection The ITR100...
Page 17: ...elephone 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 The FIC is subject...
Page 18: ...te Adjustment 1 Connect an ac voltmeter to TPC1 on the main circuit board 2 Starting with the line input control pot 3 rotated fully clockwise adjust the line input control until the ac voltage level...
Page 19: ...at test point TPC1 5 Slowly adjust the desk set receive level potentiometer pot 3 until the level just stops increasing knee of compression at approximately 2 dBm 6 If multiple desk sets are used rep...
Page 20: ...t pot 1 until the tone in the speaker is at minimum volume HandsetMicrophoneAdjustment This adjustment is factory set at a nominal level suitable for many applications Make adjustments only after the...
Page 21: ...an to set parameters and then disable access to programming functions When disabled users cannot accidentally change parameters F1 through F4 function tones are set at the factory to the following fre...
Page 22: ...ions 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 FunctionToneDurations F1 F2 F3 F4 Duration Off Off Off Off 40 ms...
Page 23: ...Off Off 1250 Hz On Off Off On 1150 Hz On Off On Off 1050 Hz On Off On On 950 Hz On On Off Off 850 Hz On On Off On 750 Hz On On On Off 650 Hz On On On On 550 Hz While in the programming or diagnostic...
Page 24: ...continuous function tone frequency selected for F1 F2 F3 or F4 is generated to the speaker and wire line during this adjustment CTL F1 F2 F3 OR F4 within 3 sec of power up Increase function tone freq...
Page 25: ...ch U6 The microcontroller manages audio circuits through the outputs of serial to parallel latch U4 Operating parameters such as function tone frequencies etc are stored in serial NVRAM U2 Audio Circu...
Page 26: ...ting voltage is also connected to this divider through R154 If the dc volume control voltage at U15 pin 5 is below 0 3 V dc the speaker amplifier switches to the mute mode A dc volume control voltage...
Page 27: ...e line this level should be adequate for the tone adapter to decode the tone sequence RX audio is low or distorted Ensure that the tone remote adapter is wired correctly including the RX audio pair Au...
Page 28: ...radation of the audio signal If a leased line is being used and excessive losses are measured contact your local exchange carrier Check the pot 4 setting Distorted TX audio Verify that the tone remote...
Page 29: ...25 02 12 Main Circuit Board...
Page 30: ...Main Circuit Board ITR1000 001 Basic Tone Remote Desk Set 26...
Page 31: ...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: ...o 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 40: ...Notes ITR1000 001 Basic Tone Remote Desk Set 36...
