Specifications

Audio International, Inc. A/V-9691-01(-02)-x Installation & Operation Manual
Document # 540250, Rev D, 07/2004
Page 8 of 33
High-Tone Chime Inputs: Two (2) high-tone chime inputs are
provided for use. Each initiation will cause a single high tone
activation. The high-tone chime feature activates both PA/chime
key outputs when activated. High-tone input #1 is ground active
(<1.2 VDC to activate). High-tone input #2 is +28 VDC active.
Low-Tone Chime Inputs: Two (2) low-tone chime inputs are
provided for use. Each initiation will cause a single low tone
activation. The low-tone chime feature activates both PA/chime
key outputs when activated. Low-tone input #1 is +28 VDC active.
Low-tone input #2 is ground active (<1.2 VDC to activate).
PA/Chime Key Outputs: Two (2) PA/chime key outputs are
provided for use to allow for control of external events. Each output
is ground active and is activated any time any PTT/key or chime
input is activated except the cockpit chime key input.
Cockpit Chime Inhibit: A cockpit chime inhibit feature is provided
for use to inhibit all audible chime tone outputs from being present
over the Pilot and Copilot chime audio outputs. The cockpit chime
inhibit input is constant ground active (<1.2 VDC to activate). All
chime tones will be inhibited until the ground is removed from this
input.
Cabin Ringer: A cabin ringer input is provided, causing an audible
cabin ringer tone to cycle with an ON time of two (2) seconds and
an OFF time of four (4) seconds. During the two (2) second ON
time, a high tone activation occurs for a duration of 24 msec
followed by no tone for a duration of 18 msec. This process is
repeated throughout the duration of the two-second ON time. The
cabin ringer input is constant ground active (<1.2 VDC to activate).
The cabin ringer will continue to cycle until the ground input is
removed.