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2.1.6 When the area around the devices to be actuated is clear of persons who
might be injured by an accidental actuation, and after verifying that the
receiver's green activity light is off (no radio signal is being detected), turn
the receiver's ARM switch to its "Armed" position. Refer to the receiver
manual for the corresponding arming procedure.
WARNING - If the receiver's green activity light is erratic or on
continuously, its output may be actuated immediately upon
changing its ARM switch to the "Armed" position.
2.1.7 If operating in Acoustic Trigger Mode (see section 1.4.1), turn the
transmitter lock switch to its "Enabled" position. The transmitter should be
held with the antenna in a vertical orientation, away from the body and
other conductive objects to achieve maximum range and communication
reliability. Generally, the higher the transmitter is held, the greater the
range. Conductive objects such as chain-link fences, aluminum
bleachers, and automobiles in the transmission path will reduce the
range.
Be aware that fire command transmission can occur immediately
upon depression of the "Fire A / Enable B" button if acoustic events
are occurring. Do not press the "Fire A / Enable B" button until it is
quiet, and all persons who might be harmed by device actuation are
in a safe area.
When you are sure that background noise is below the acoustic trigger
threshold and all persons who might be harmed by device actuation are in
a safe area, press "Fire A / Enable B" and hold until occurrence of the
acoustic event. The green "Xmtr Enabled" indicator will glow continuously,
and "fire command A" transmission will occur when an acoustic event is
sensed by the rear-panel microphone or when the "Fire B" button is
pressed, resulting in one sequential shot for each event occurrence.
Transmission will occur for 250 msec following an acoustic event and
continually while the "Fire B" button is held down. An acoustic event is
defined as a sound impulse exceeding the switch selected threshold.
(See section 1.7)
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