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Guardian Telecom Inc.

Installation & Operation

TBA Models

Page 23

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

P004851

Switch - Faceplate Snap In Rocker White

P005123

Label Volume Control Plate

P005995

Neon Lamp - 120VAC

P006322

Volume Control Switch Assembly

P006697

Connector - Universal Snap-In Inlet

P006698

Cord - Detachable Power Cord

P005521

PCBA - TBA50

P005882

PCBA - TBA20

P005991

PCBA - TBA30

P005998

PCBA - TBA40

P006145

PCBA - TBA41

P006146

PCBA - TBA31

P006147

PCBA - TBA21

P007142

PCBA - TBA33

P007385

PCBA - TBA22

Содержание TBA Series

Страница 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...

Страница 2: ...ion 9 6 2 2 DC Supply Options 9 6 3 Push to Talk Switches 10 6 4 Microphone 10 6 5 Speaker 10 7 TBA Configurations except for TBA 33 11 8 TBA 33 Configuration 13 9 Installation Adjustments 19 9 1 Init...

Страница 3: ...tions to 2011 13 Figure 9 TBA 33 Internal Transformer Wiring Pre 2011 14 Figure 10 TBA 33 Internal Audio Connections Starting 2012 15 Figure 11 TBA 33 Internal Transformer Connections 16 Figure 12 Sta...

Страница 4: ...assist in the selection and installation of TBA peripherals 3 Identification of equipment There are several models of Guardian Talk Back Amplifiers TBA The Printed Wiring Board Assembly PWBA in the TB...

Страница 5: ...e the volume controls have numbers from1 to 10 to assist in setting repeatability Figure 2 TBA 41 Front Panel 3 3 TBA Rear Panel The TBA Rear Panel of the enclosure has from two to five cable entries...

Страница 6: ...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 Rea...

Страница 7: ...PTT switch is engaged depressed the TBA puts a low level audio onto the Central Station speaker This low level is to prevent acoustical feedback The other speakers in the system are set to the speaker...

Страница 8: ...he bottom set of terminals will disable the Go Ahead or short Ringing tone 4 6 Applications on Drilling Rigs In drilling rig applications the TBA normally consists of Central Station at the doghouse w...

Страница 9: ...volts AC is provided therefore the service personnel should be qualified to work with electrical equipment The TBA amplifier enclosure is painted and uses stainless steel hardware internally The compo...

Страница 10: ...ource of interference such as a generator high voltage cable or AC supply transformer Each of these connections should be evaluated separately for safety 6 5 Speaker The Talk Back Amplifier has a 10 w...

Страница 11: ...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 Stations 1 2 and 3 are conn...

Страница 12: ...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 s...

Страница 13: ...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 spe...

Страница 14: ...Guardian Telecom Inc Installation Operation TBA Models Figure 9 TBA 33 Internal Transformer Connections Pre 2012 Page 14...

Страница 15: ...hm and R166 is 1 0 K Ohm to reduce the input gain to telephone line levels The transformer on the Central Station output is a 600 to 10K Ohm transformer to raise the impedance from 8 Ohms to 150 Ohms...

Страница 16: ...Guardian Telecom Inc Installation Operation TBA Models Figure 11 TBA 33 Internal Transformer Connections Starting 2012 Page 16...

Страница 17: ...Guardian Telecom Inc Installation Operation TBA Models Figure 12 Station Connector Wiring Figure 13 Central Station Microphone Wiring Page 17...

Страница 18: ...Guardian Telecom Inc Installation Operation TBA Models Figure 14 Central Station Speaker Wiring Page 18...

Страница 19: ...justment positions or mark them on the internal PWBA potentiometers Refer to Figure 15 Adjustment Locations for the locations of the following adjustments Adjust these potentiometers to the 50 rotatio...

Страница 20: ...so that it is at 50 of the rotation clockwise 9 5 Ringer Volume Adjustment Press the Monitored Station PTT switch Adjust the Ring Volume R186 to have a ringing signal that is loud enough but does not...

Страница 21: ...r RELAY on any position used as a RINGER input 9 12 Replace the TBA enclosure top panel Turn the AC Power Switch to OFF Mark the potentiometer positions with a marker on the PWBA mounted adjustments N...

Страница 22: ...R WHEN USED AS A TALK BACK MICROPHONE AUDIO 350 OHMS 1 MILLIVOLT RMS NOM 1 VOLT MAX PTT SWITCH DRY CONTACT SPST ADDITIONAL SPEAKERS WHEN USED AS TALK BACK MICROPHONES AUDIO 350 OHMS 1 MILLIVOLT RMS NO...

Страница 23: ...P004833 Switch Rotary Cap Pointer Black P004851 Switch Faceplate Snap In Rocker White P005123 Label Volume Control Plate P005995 Neon Lamp 120VAC P006322 Volume Control Switch Assembly P006697 Connect...

Страница 24: ...purposes of installing the product making adjustments and replacing components following the instructions in the product manual High voltages may be present in this product when connected to system wi...

Страница 25: ...ng the service telephone number given in this manual After providing information on the product the owner and the nature of the problem Guardian will issue a RMA number to be shown on documentation re...

Страница 26: ...Guardian Telecom Inc Installation Operation TBA Models Page 26 Notes Model No Part No Serial No Date of Purchase...

Страница 27: ...THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 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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