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Summary of Contents for Guardian Telecom TBA Series
- Page 1 Talk Back Intercom System Model TBA Installation & Operation P007143 Rev. D 150824 8/24/2015 11:32 AM Ph: 403.258.3100 \ email:info@guardiantelecom.com \ www.guardiantelecom.com...
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Page 2: Table Of Contents
Guardian Telecom Inc. Installation & Operation TBA Models Contents 1. Purpose....................4 2. Scope ....................4 3. Identification of equipment ..............4 3.1. TBA Model Numbering ..............4 3.2. TBA Front Panel ................5 3.3. TBA Rear Panel.................5 3.4. TBA Enclosure Inside ..............6 4. System Overview ................7 ... - Page 3 Guardian Telecom Inc. Installation & Operation TBA Models 12. Replacement Parts................23 13. Warranty....................24 14. Disclaimer ..................24 15. Warning.....................24 16. Service Telephone Number 1-800-363-8010........24 17. Feedback ..................24 18. Guardian Product Return ..............25 Figures Figure 1 - Table of TBA Models ..............4 ...
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Page 4: Purpose
Purpose This document is provided to assist in the electrical installation and operation of a Talk Back Amplifier (TBA) as produced by Guardian Telecom Inc. Scope The installation information will consist of connections to the TBA unit in the enclosure. The connections to external speakers and microphones are covered in their respective manuals. -
Page 5: Tba Front Panel
Guardian Telecom Inc. Installation & Operation TBA Models 3.2. TBA Front Panel The TBA Front Panel of the enclosure has from two to five volume controls and a power indicator. The power indicator shows the presence of AC power, and is a green illumination if AC is present. -
Page 6: Tba Enclosure Inside
Guardian Telecom Inc. Installation & Operation TBA Models 3.4. TBA Enclosure Inside The photos below show the TBA-50 with the top cover removed. Figure 4 - TBA Enclosure Inside Front Figure 5 - TBA Enclosure Inside Rear Page 6... -
Page 7: System Overview
Guardian Telecom Inc. Installation & Operation TBA Models System Overview The Talk Back Amplifier (TBA) is so named because of the ability for the user to talk back to the speakers instead of using a separate microphone to talk back. -
Page 8: Ptt Actions
Guardian Telecom Inc. Installation & Operation TBA Models 4.4. PTT Actions The Central Station Push to Talk (PTT) switch has the highest priority in using PTT. When the PTT is pressed on the Monitored or Stations #1, #2 or #3 the stations are a first-come first-served basis for PTT. -
Page 9: Installation Instructions
Guardian Telecom Inc. Installation & Operation TBA Models The Push to Talk (PTT) switches may be of a suitable rating for use in hazardous areas, or connected through an approved intrinsically safe barrier. Any application of equipment into a hazardous area must be approved by the appropriate authority. -
Page 10: Push To Talk Switches
Guardian Telecom Inc. Installation & Operation TBA Models 6.3. Push to Talk Switches The Talk Back Amplifier has a 24 volt resistive connection to Push to Talk (PTT) switches. The use of gold or silver plated switch contacts within an environmentally sealed housing is recommended for long term reliability. -
Page 11: Tba Configurations Except For Tba-33
Guardian Telecom Inc. Installation & Operation TBA Models 7. TBA Configurations except for TBA-33 The external and internal connections for the TBA’s audio connections are shown in block form below. Note that the connections of Stn #1, #2 and #3 are the same as for the Monitored (Mon) station. -
Page 12: Figure 7 - Tba Internal Audio Connections
Guardian Telecom Inc. Installation & Operation TBA Models The 8 Ohm to 325 Ohm transformer is called a “70 volt transformer”, and it connects between the output amplifier and the speaker. Stations #1, #2 and #3 are connected in the same manner as the Monitored Station shown below. -
Page 13: Tba-33 Configuration
Guardian Telecom Inc. Installation & Operation TBA Models 8. TBA-33 Configuration The connections for the TBA-33 PWBAs before 2012 are shown below. The 8 Ohm to 325 Ohm transformer is called a “70 volt transformer”, and it connects between the output amplifier and the speaker. -
Page 14: Figure 9 - Tba-33 Internal Transformer Wiring Pre 2011
Guardian Telecom Inc. Installation & Operation TBA Models Figure 9 - TBA-33 Internal Transformer Connections Pre 2012 Page 14... -
Page 15: Figure 10 - Tba-33 Internal Audio Connections Starting 2012
Guardian Telecom Inc. Installation & Operation TBA Models The connections for the TBA-33 PWBAs starting in 2012 are shown below. Note that the value of R161 is 10 K Ohm and R166 is 1.0 K Ohm to reduce the input gain to telephone line levels. The transformer... -
Page 16: Figure 11 - Tba-33 Internal Transformer Connections
Guardian Telecom Inc. Installation & Operation TBA Models Figure 11 - TBA-33 Internal Transformer Connections Starting 2012 Page 16... -
Page 17: Figure 12 - Station Connector Wiring
Guardian Telecom Inc. Installation & Operation TBA Models Figure 12 - Station Connector Wiring Figure 13 - Central Station Microphone Wiring Page 17... -
Page 18: Figure 14 - Central Station Speaker Wiring
Guardian Telecom Inc. Installation & Operation TBA Models Figure 14 - Central Station Speaker Wiring Page 18... -
Page 19: Installation Adjustments
Guardian Telecom Inc. Installation & Operation TBA Models Installation Adjustments The speaker outputs levels are each individually adjustable. The gain for the Central Station microphone is adjustable. The gain for the Monitored Station, Station #1, #2, and #3 are on one adjustment. -
Page 20: Powering On The Tba
Guardian Telecom Inc. Installation & Operation TBA Models 9.2. Powering ON the TBA Turn the AC power switch on the back panel to “ON”. Verify that the “Go-Ahead” tone is heard briefly on all of the speakers attached. 9.3. Monitored Station Microphone Volume Adjustment Monitored Station Volume (Microphone –... -
Page 21: Optional Ringing From Ptts
Guardian Telecom Inc. Installation & Operation TBA Models 9.11. Optional ringing from PTTs The PTTs inputs can be used to operate the speaker as a microphone with the jumpers on J21 at the “RELAY” position. The PTTs can also be used to directly activate the “Ringer” output with a jumper on J21 at the “RINGING”... -
Page 22: Product Specifications
Guardian Telecom Inc. Installation & Operation TBA Models 11. Product Specifications Electrical 120VAC @ 60 H OWER EQUIREMENT 250V, 1.0A, S , 1AG OWER UPPLY @ 50/60 H 30 VDC 10A E PTIONAL OWER UPPLIES Z OR XTERNAL OWER Audio And Control Inputs... -
Page 23: Replacement Parts
Guardian Telecom Inc. Installation & Operation TBA Models 12. Replacement Parts Part No. Description P001626 Fuse Holder P002843 Transformer 10 Pin 70.7/25V P003061 Transformer 24V Hammond - 167L24 P004078 Fuse - 1 Amp Slo-Blow Glass P004833 Switch - Rotary Cap Pointer Black... -
Page 24: Warranty
13. Warranty Guardian Telecom warrants your product to be free of defects in material and workmanship for a period of one year. Guardian Telecom will repair or replace any defective unit that is under warranty free of charge. This warranty is null and void if any non-authorized modifications have been made to this product, or if it has been subjected to misuse, neglect, or accident. -
Page 25: Guardian Product Return
When a product has been installed following user manual instructions, and the unit fails to operate, the user must contact Guardian Telecom to obtain authorization to return the product. This can be done by completing a RMA form online at www.guardiantelecom.com, or by calling the service telephone number given in this manual. - Page 26 Guardian Telecom Inc. Installation & Operation TBA Models Notes: Model No. Part No. Serial No. Date of Purchase Page 26...
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- Page 28 Guardian Telecom Inc. Toll-free 1-800-363-8010 Phone (403) 258-3100 Fax. (403) 253-4967 www.guardiantelecom.com E-mail: sales@guardiantelecom.com CONNECTED. PROTECTED. © Guardian Telecom Inc. 2015...
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