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Guardian Telecom Inc.
Installation and Operation
Page/Talk Indoor Housing
Page 9
Ambient Noise Level Adjustment
The Ambient Noise Sensor on Guardian's Page/Talk stations automatically adjusts the
volume of the associated loudspeaker up to 10dB, so that pages can be heard over the
background noise.
There are two controls on the circuit board to adjust the Ambient Noise Sensor
mechanism. The Paging Speaker Volume Control – which is accessible from the back of
the module – sets the volume of the speaker to a comfortable level when the ambient
noise is at a minimum. The Ambient Noise Monitor Adjustment Control determines how
the speaker volume tracks the ambient noise. That is if the speaker is not loud enough
with a high ambient noise the control can be adjusted to increase the volume.
Alternatively if the speaker is too loud with a high ambient noise the control can be
adjusted to decrease the volume. It is usually not necessary to change the setting of the
Ambient Noise Monitor Adjustment Control since it is set at the factory for average
conditions. Adjustment could be necessary if for some reason the Ambient Noise
Sensor Microphone is shielded from the source of ambient noise or some similar
situation exists.
See: Figure 4 - Circuit
Board Layout
Operating the ExP-1 Single Line Station
Initiating a Call
• Remove the handset.
Note: There is one talk
line on the ExP-1.
• Ensure that the line is free.
Broadcasting a Page
• Press and hold the Page button on the handset.
• Broadcast the page. (e.g. "Joe, I need to talk to you, pick up a handset.")
Connecting with a Second Party
Note: Continue holding
down the Page button
while broadcasting the
page.
• When the second party picks up their handset, both parties are connected and can
carry on a conversation.
Freeing the Line
Note: The second party
can be located at any
other station.
• Place the handset back on the cradle.
Operating the ExP-5 Multi Line Station
Initiating a Call
• Remove the handset.
Note: There are five
talk lines on the
ExP-5.
• Select a free line using the Line selector.
Broadcasting a Page
• Press and hold the Page button on the handset.
• Broadcast the page that includes the number of the line you are using. (e.g. "Joe,
talk to me on line one.")
Connecting with a Second Party
Note: Continue holding
down the Page button
while broadcasting the
page.
• When the second party selects the appropriate channel and picks up their handset,
both parties are connected and can carry on a conversation.
Freeing the Line
Note: The second party
can be located at any
other station.
• Place the handset back on the cradle.