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Pub. 42004-417A
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
Model ACC2500 Audio Control Center
User and Installation Manual
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374
800-492-1212
Fax: 610-796-5954
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ISIT WWW
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Related Manuals for GAI-Tronics ACC2500
Summary of Contents for GAI-Tronics ACC2500
- 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 Model ACC2500 Audio Control Center User and Installation Manual GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA 610-777-1374 800-492-1212 Fax: 610-796-5954...
- Page 2 Buyer hereby agrees to indemnify, defend and hold GAI-Tronics harmless from and against any and all third party claims arising, in any manner, out of: (a) Buyer’s neglect of the equipment; (b) Buyer’s use of technicians not authorized by GAI-Tronics to service the equipment; or (c) Buyer’s improper use or modification of the equipment or failure to follow the operational and maintenance procedures provided with the equipment.
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Page 3: Table Of Contents
..........................1 NTERFERENCE ARNING CMOS I .................. 2 ANDLING OF NTEGRATED IRCUIT EVICES DESCRIPTION ..............................3 ............................ 3 EATURES AND ENEFITS ACC2500 A ................4 NTRODUCTION TO THE UDIO ONTROL ENTER ........................4 YSTEM OMPONENT EFERENCES ........................... 5 UTTON ANEL ........................ - Page 4 Table of Contents ACC2500 Audio Control Center Reloading Factory Defaults ......................... 25 Main Diagnostics Selection ......................... 26 PB1 – Line Output Adjust ..........................26 PB2 - Line-In Sensitivity ..........................27 PB3 – Internal Diagnostics.......................... 28 PB1 – Relay Module Diagnostics ..........................28 PB2 –...
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Page 5: Foreword
Foreword Scope of Manual This manual offers descriptive data and service information for the Model ACC2500 Audio Control Center. 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 ACC2500 Audio Control Center 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
Direct AMI Audio Monitoring User can hear all audio being generated by the AMI whether originated from the ACC2500 or external event such as a timed event or telephone broadcast. Live Broadcast Supports live broadcast with zone selection Front-mounted controls and Includes mute/unmute and local speaker on/off. -
Page 8: Introduction To The Acc2500 Audio Control Center
On/Off. Inputs can be configured for Button Remap, Output Link, and Link to a preprogrammed zone and alarm configuration. The ACC2500 uses DTMF control for zone selection of the Addressable Amplified Speakers or Stanchion Broadcast products. The unit allows direct entry of zones via the numeric keypad or selection of zones using a preprogrammed alias (programmed using the CARD Suite software application.) -
Page 9: Desk Set Button Panel
ACC2500 Audio Control Center Description Desk Set Button Panel TRANSMIT Button and LED The red TRANSMIT button is used to place the unit in the broadcast mode and to initiate voice and alarm transmissions. The LED, TRANSMIT located to the left of the button, illuminates steadily when transmitting voice and flashes when the AMI is actively generating a message/alarm or in a telephone voice call. -
Page 10: Internal Microphone And Speaker
The internal microphone and speaker are provided to allow one-button communication. Handset Each ACC2500 is equipped with a handset with a coil cord used for receiving and transmitting calls. The handset includes a push-to-talk (PTT) pressbar. Rear View of ACC2500... -
Page 11: Connectors
Function Battery backup AMI Connections The rear of the ACC2500 contains two modular ports used to connect to the front control port of the AMI. The 6-pin line connector is the transmit and receive audio connection to the AMI. Function... - Page 12 NOTE: It is important that those pins labeled "No connection" be left un-terminated. Connection of these pins may damage the ACC2500 or AMI and may not be covered under warranty. To facilitate the connection of these two ports to the AMI, the 69612-xxx (purchased separately) contains three modular connectors and two cables.
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Page 13: Accessories, And Options And Kits
ACC2500 Audio Control Center Description Accessories, and Options and Kits Description Part No. CARD Suite Software on CD XAC1000A Programming Cable XAC0004A Relay Control Field Install Kit XRC0001A* Mounting Kit for Option Boards XAC0100A Power Supply, 120 V ac 60 Hz... -
Page 14: Performance Specifications
Description ACC2500 Audio Control Center 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) Tx/Rx impedance......................600 ohms nominal Power input .......... -
Page 15: Operation
Operation The ACC2500 provides system control of a GAI-Tronics wide-area broadcast system consisting of an Audio Messenger Interface (AMI), amplified addressable speakers and/or stanchion broadcast products. It allows selection of individual units or zones and selection of preprogrammed speech/tone alarms. -
Page 16: Idle Mode
ACC2500 Audio Control Center Idle Mode When power is applied, the ACC2500 is in the receive or idle mode, allowing any AMI audio to be heard through the speaker or handset. It is always in this mode unless the unit is transmitting. -
Page 17: Initiating Live Voice Broadcasts Without An Alarm
ACC2500 Audio Control Center Operation If zone aliases have been programmed using the CARD Suite application, the operator may choose a zone using a name instead of a direct number. For example, zone 123 can be programmed as “Zone 1,” zone 234 can be “Zone 2,”... -
Page 18: Handset Transmit
All models can be keyed to transmit with an external desk microphone when used with the optional Model XAAB002A Audio Accessory Box. Use of the GAI-Tronics Model XHS002A Desk Mic, or compatible microphone, is recommended. Refer to the XAAB002A documentation for connection and installation of this option. -
Page 19: Alarm Selection
Operation Alarm Selection In addition to live voice broadcasts, the ACC2500 allows selection of programmed alarm/speech messages to be broadcast to particular zone. If the displayed alias has a preconfigured alarm associated with it, the operator may not change it or turn it off. To select an alarm, press the... -
Page 20: Initiating Alarm Broadcasts Without Voice
Operation ACC2500 Audio Control Center Initiating Alarm Broadcasts without Voice After the desired zone and alarm have been selected, the operator may begin broadcasting the alarm by pressing and releasing any PTT source such as the main button, handset PTT or PTT of a TRANSMIT connected accessory. -
Page 21: Stopping The Broadcast Of An Alarm
ACC2500 Audio Control Center Operation Stopping the Broadcast of an Alarm Once an alarm broadcast has been initiated, it may be desirable to stop playback or select another alarm instead. This can be done in many ways. To stop the alarm being broadcast, press any of the following buttons:... -
Page 22: Initiating Live Voice Broadcast During An Alarm Broadcast
Overdialing DTMF The ACC2500 allows the operator to generate DTMF sequences while field units are active. This can be used to remotely control the field units’ volume or to add in additional field units by specifically dialing the address of the desired field units. -
Page 23: Programmable Buttons
ACC2500 Audio Control Center Operation Programmable Buttons The four programmable buttons with LED indicators are used to custom configure up to eight user functions. The through buttons are accessed directly, while the buttons are accessed using the key while depressing one of the through buttons. -
Page 24: Combination Button Operation
PTT is active. *When the optional Model XAAB002A Audio Accessory Box is used with the ACC2500, the handset port is used as a connection point for the audio accessory box. Therefore, any attached accessories will use the handset microphone sensitivity when the microphone’s PTT is asserted. -
Page 25: Installation
Installation Planning the Installation Typical ACC2500 Connection Diagram Hot Backup ACC2500 Connection Diagram *Requires the optional XRC0001A relay board and connection per Table 1 below. 09/08... -
Page 26: Mounting
Foreword section of this manual. Electrostatic Discharge (ESD) Protection The ACC2500 have ESD protection circuitry that provides a high degree of protection against ESD, and power and telephone line surges. The circuitry shunts the transient currents to earth ground through the ground terminal. -
Page 27: Cable Installation Safety Considerations
ACC2500 Audio Control Center Installation Cable Installation Safety Considerations Wiring should conform to the Article 800 of the National Electrical Code. Use listed communication wiring and cabling for interconnection to other equipment that is suitable for the purpose. Cables should be... -
Page 28: Microphone Sensitivity Adjustments
ACC2500 Audio Control Center Microphone Sensitivity Adjustments After connections have been made, the ACC2500 must be configured for transmit and receive audio levels. These adjustments are made using the front panel buttons. The microphone sensitivity adjustment is used to compensate for different user voice levels and varied acoustical conditions. Refer to the following instructions to adjust the different microphones. -
Page 29: Level Adjustments And Diagnostics
ACC2500 Audio Control Center Installation Level Adjustments and Diagnostics Programming Menu The programming buttons, through , are used to navigate the menu for specific installations and to perform diagnostics. The diagram below illustrates which buttons to press to access the diagnostic menu features. -
Page 30: Main Diagnostics Selection
Installation ACC2500 Audio Control Center Main Diagnostics Selection To enter the main programming mode: 1. Remove power from the desk set. 2. Reapply power and wait for the through to illuminate. (The display will indicate PB4 LED “checking parameters - please wait.”) Press either PB1, PB2, PB3, to enter diagnostics. -
Page 31: Pb2 - Line-In Sensitivity
ACC2500 Audio Control Center Installation Program the desk set’s line level to achieve adequate deflection of the VU meter of the AMI. Refer to the following table for these settings: Line Output Adjustment Table Setting Line Level (600-ohm) -10 dBm... -
Page 32: Pb3 - Internal Diagnostics
AMI. Additional backup units can be cascaded in the same manner. When the primary ACC2500 recovers, it will take over command of the AMI and the backup units will enter backup mode. -
Page 33: Pb4 - Keyboard Diagnostic
ACC2500 Audio Control Center Installation PB4 – Keyboard Diagnostic This function is accessible via Main Diagnostics, then Internal Diagnostic ( ) and verifies that the keyboard is operating correctly. After entering the keyboard diagnostic mode, the display shows: KEYBOARD TEST... -
Page 34: Pb2 - Dtmf Level Adjust Mode
PB3 –AMI Message Diagnostics The AMI is programmed using the GAI-Tronics ACT tool and the messages and tones are stored in no particular order on the device. In order for the ACC2500 to allow user selection of the preprogrammed alarms, it must read the table of contents from the AMI when necessary. -
Page 35: Theory Of Operation
Theory of Operation General Desk Set Overview The ACC2500 is a multi-processor design employing state-of-the-art DSP technology to achieve superior performance over typical analog and single-processor designs. This allows for ultimate flexibility in audio processing. The heart of the design consists of U1, the DSP; and U3, the microcontroller. The DSP is responsible for audio processing of receive and transmit audio. -
Page 36: Transmit Audio
Theory of Operation ACC2500 Audio Control Center Transmit Audio Transmit audio is originated from the DSP in digital format. The DSP combines DTMF tones and voice audio to generate the transmit audio. It is converted to analog by the D/A section of U15. Upon conversion to analog, the audio is passed through the line-out gain stage consisting of U11 and U10 for level adjustment. -
Page 37: Card Suite Programming Software
GAI-Tronics’ CARD Suite Programming Software, part number XAC1000A, is needed to program some of the functions and parameter settings of the ACC2500. It allows entry of operational programming data into your personal computer for transfer to the equipment. The programmed data can be retrieved, edited, archived, and printed in hard copy for record keeping. -
Page 38: Card Suite Programming
This pretime begins after the AMI is commanded to begin transmission and allows the system to stabilize before generation of DTMF sequences. Normally, this setting is 0 ms and the ACC2500 includes a built-in pretime for a hard-wired system or one where no delays are present. If the initial DTMF sequence broadcast is being chopped off at the receiving unit, this pretime should be increased appropriately. -
Page 39: Zone Address Length
5-second increments and will require that the field units be set to the same 5-second granularity. If set to 0, the ACC2500 will generate the DTMF ZONE address each time a zone is addressed. Note that this will be the default activation time for any zone and can be overridden using preprogrammed zone aliases. -
Page 40: Preprogrammed Zone With Alarm
Max Digits From Keypad under the Paging Parameters Tab had been set to 3, the ACC2500 will extract the address of 123 and a message number of 27 from the new alias. Note that all digits following the address in the alias will be used to determine the message number. -
Page 41: Troubleshooting
The unit has been configured as a hot standby unit and is not currently “BACKUP WAITING.” communicating with the AMI. Upon connection to the AMI via primary ACC2500 failure or cable, the unit will reset and begin normal operation. Refer to the Diagnostics section of this manual for more information. 09/08... -
Page 42: Fuse Replacement
Troubleshooting ACC2500 Audio Control Center Fuse Replacement CAUTION For continued safe operation, replace fuses with the same type. • Fuses F1 and F2 are Bussmann C515S 1.25A SB 2AG. • Fuse F401 is Bussmann GMA 1A 5X20MM. 09/08... -
Page 43: Circuit Boards
Circuit Boards 09/08... - Page 44 Circuit Boards ACC2500 Audio Control Center...
- Page 45 ACC2500 Audio Control Center Circuit Boards...
- Page 46 Circuit Boards ACC2500 Audio Control Center...
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Page 47: Schematics
Schematics 09/08... - Page 48 ACC2500 Audio Control Center Schematics Desk Set - Line Interface - Sheet 1...
- Page 49 ACC2500 Audio Control Center Schematics Desk Set - User Audio I/O - Sheet 2...
- Page 50 Schematics ACC2500 Audio Control Center Desk Set - Control Microprocessor I/O - Sheet 3...
- Page 51 ACC2500 Audio Control Center Schematics Desk Set - DSP Block - Sheet 4...
- Page 52 Schematics ACC2500 Audio Control Center Desk Set - Tone Key Panel - Sheet 5...
- Page 53 ACC2500 Audio Control Center Schematics Desk Set Power Supply - Sheet 6...
- Page 54 Schematics ACC2500 Audio Control Center Schematic - Sheet 7...
- Page 55 ACC2500 Audio Control Center Schematics...
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Page 56: Notes
ACC2500 Audio Control Center Notes...
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