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.
