Guardian Telecom Inc.
Installation and Operation
Model ExP-TBA
Page 3
Overview
Talk Back System EXP-TBA
The model EXP-TBA is an intercom system designed for use in situations where frequent
communication between two stations is required. The system is particularly well suited to
drilling rig operations. The system utilizes a remote Slave loudspeaker in dual roles, to
broadcast messages from the Master Station and to act as a microphone to pick up and
transmit messages back to the Master Station. The Master Station has a microphone on the
faceplate which is activated when the Push-To-Page button on the faceplate is pressed. An
option is for the connection of a remote foot switch or hand operated button switch, which
when activated will cause the Master Station loudspeaker to act as a microphone.
The EXP-TBA system has two possible operating modes:
1.
Hands Free Talk-Back Mode:
In this mode the Slave speaker is always configured
as a microphone sending any sound in the area back to the Master Station speaker,
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 Station speaker. The ringing signal will be heard even if
the Master Station speaker volume is turned down.
2.
Push-To-Talk Mode:
In this mode neither the Master Station speaker nor the Slave
speaker is normally in transmit mode. A push button is required at the Slave speaker
to put the speaker into transmit mode. The button must be held in for the duration of
the call.
EXP-TBA Features
Enclosure and Faceplate
•
copper free cast aluminum - powder coated
Master/Slave Operation
•
only one master station required
Post Announcement Tone
•
optional – jumper on circuit board
Slave Operator Ring Tone To Master Station
•
optional – requires a push button switch at the slave speaker location
•
ring tone volume adjustable (internal)
Page Switch
•
page switch on faceplate of enclosure
•
option for external hand or foot switch
Master Microphone
•
on faceplate of master station
•
option for use of master speaker as microphone
Controls
•
separate master and slave speaker volume controls on faceplate
Power Requirement
•
24 VDC or 24/120/230 VAC
