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Guardian Telecom Inc. 

 

 

 

 

Installation and Operation 

Model ExP-TBA 

 

Page 7 

 

 

 

Switching between Operating Modes: 

 

When powered up the Talk Back System will operate in the 

Slave Hands 

Free mode

.  In order to avoid opening up the EXP-TBA to switch operating 

modes the following procedure is used to toggle to the 

Slave PTT mode

 and 

vice versa. 

 

1)  Press the Page-To-Page switch and hold it for longer than 5 

seconds (by counting from 1 to ten), then release the switch for a 
break time from 1/2 a second to 3 seconds. 

 

2)  Press the Push-To-Page switch ten times. Each time hold the 

switch from 1/2 a second to 2.5 seconds then release it for a break 
time from 1/2 a second to 3 seconds.. 

 

3)  Push the Push-To-Page switch and hold it for longer than 5 

seconds (by counting from 1 to ten). Then release the switch. 

 

4)  If the sequence is correct the system will switch its present 

operating mode to the other operating mode. Three beep tones will 
be heard over the Master Station speaker if the mode switching 
occurs. 

 

Note: If power is lost after the system has been switched to Slave PTT mode it 
will revert back to Slave Hands Free mode when power is restored. 

 

 

Operation  

1.  Hands Free Talk Back Mode: 

 

In Hands Free Talk Back mode the Master Station speaker is normally on and 
the Slave speaker is functioning as a microphone. 

 

Faceplate Push-To-Page switch:

  Without any switches activated any sound 

in the Slave speaker area will be heard on the Master Station speaker.  When 
the Push-To-Page switch (located on the EXP-TBA faceplate) is activated the 
Master Station speaker will be turned on – with attenuation to reduce the 
possibility of acoustic feedback, the Slave speaker will also be turned on.  
This condition will occur even if the remote Master Station or Slave switches 
are activated, since the Push-To-Page switch has priority. 

 

Remote Master Station Switch – (optional):

  This can be a foot operated or 

a hand operated button switch.  It will activate the Master Station when it is 
pushed and when the Push-To-Page switch is open.  In this condition the 
Master Station speaker is converted into a microphone.  The Slave speaker is 
turned on to broadcast the message sent from the Master Station. 

 

Slave Station Switch – (optional):

  If an optional push button switch is 

installed next to the Slave speaker a ring tone will be heard on both the 
Master Station speaker and the Slave speaker when the button is pressed.  
This will occur even if the Master Station speaker volume control is turned 
down and will alert persons in the vicinity of the Master Station. 

 

 

Summary of Contents for ExP-TBA

Page 1: ...Canada T2E 8W1 Industrial Communications Worldwide Explosion Proof Talk Back Wall Station Model ExP TBA Installation Operation P005615 Rev E 080220 2 21 2008 1 43 PM Ph 403 258 3100 email info guardia...

Page 2: ...ineering Specifications 10 Warranty 11 Disclaimer 11 Warning 11 Service Telephone Number 11 Feedback 11 Guardian Product Return 12 Table of Figures Figure 1 Features 4 Figure 2 Dimensions 4 Figure 3 M...

Page 3: ...er except when the Master Station is activated to transmit If desired a push button can be installed near the Slave speaker which when pressed will cause a ringing signal to be heard over the Master S...

Page 4: ...STER SPEAKER 1 NPT CONNECTOR FOR SPEAKER ENTRANCE VOLUME CONTROL BUTTON PUSH TO TALK SLAVE SPEAKER STATION MICROPHONE ID LABEL CERTIFICATION LABEL WARNING LABEL CAST ALUMINUM ENCLOSURE WITH POWDERCOAT...

Page 5: ...e 4 Typical Installation Page 5 14 67 373mm 7 25 184mm 0 4 10mm 4 PLACES POWER SUPPLY 24VDC 120 240VAC OPTIONAL REMOTE HAND FOOT SWITCH MASTER STATION SPEAKER MASTER STATION E O V M L U R A M E S T O...

Page 6: ...the post announcement tone set the jumper to the TONE position to disable the tone set the jumper to the OFF position Microphone input level Potentiometer This potentiometer is referenced R24 and labe...

Page 7: ...lk Back Mode In Hands Free Talk Back mode the Master Station speaker is normally on and the Slave speaker is functioning as a microphone Faceplate Push To Page switch Without any switches activated an...

Page 8: ...hone The Slave speaker is turned on to broadcast the message sent from the Master Station The Slave Station Switch When the Slave station switch is pressed the Slave speaker is converted into a microp...

Page 9: ...EN T R 54 1 J3 D ETA IL B N eutral G round H ot 2 3 1 J7 D ETAIL C 4 5 2 3 J7 D E TAIL C FR O M LA R G E TR AN S FO R M ER TR C 255 C 12 TE R M IN A LS IN P U T A D JU STM EN T R 24 M IC IN P U T A D...

Page 10: ...T SPST SWITCH AUDIO OUTPUTS MASTER SPEAKER CHANNEL 70V LINE 10 WRMS SLAVE SPEAKER CHANNEL 70V LINE 10 WRMS ENVIRONMENTAL TEMPERATURE 40 TO 60 C 40 TO 140 F HUMIDITY 0 95 RH NON CONDENSING MECHANICAL B...

Page 11: ...equential damages Warning High voltages may be present in this product Ensure that power is removed before installing performing maintenance or repairs Service Telephone Number 1 800 363 8010 North Am...

Page 12: ...ardian 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 13: ...Guardian Telecom Inc Installation and Operation Model ExP TBA Page 13 Notes Model No Part No Serial No Date of Purchase...

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Page 16: ...N E Calgary Alberta Canada T2E 8W1 Toll free 1 800 363 8010 Ph 403 258 3100 Fax 403 253 4967 www guardiantelecom com E mail sales guardiantelecom com Click to open message box Industrial Communication...

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