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SIGNAL
Audio (Alert) Output
(see paragraph 2.10)
Debug Port
Extended Audio Switch
(Required to enable the
ViP™ Extended Audio
Callout feature)
Page A-4 - Appendix A
July 18, 2013
The document reference is online, please check the correspondence between the online documentation and the printed version.
SKY899
Installation Manual
CHARACTERISTICS
This output is directly compatible with industry standard audio panels
Audio output from the TRC is transformer isolated.
This output is disabled when a terrain warning alarm is detected (see
paragraph 2.7.1)
CONNECTION
Connector-Pin
P1-89
P1-90
P1-91
CABLE
Minimum 22 AWG twisted shielded pair cable
for lengths up to 30 ft.
40 mW into a 600 Ω load. Audio level is
POWER
adjustable via service menu.
FREQUENCY
0 - 3.0 kHz
Selectable 150 or 600 Ω
LOAD Z
NO CONNECTION TO EXISTING AIRCRAFT WIRING
(RS-232) is used for laptop interface to support system setup, post
installation checkout and troubleshooting. The port defaults to the
following settings (no hardware flow control):
Baud Rate:
Data Bits:
Parity:
Stop Bits:
Flow Control: Xon/Xoff
CONNECTION
Connector-Pin
J7-2
J7-3
J7-5
J7-7
J7-8
An extended audio callout switch is required when interfacing to the extended
audio switch input P1-32 of the TRC899. Units with Mod D and software 1.8
or higher are ViP™ Extended Audio Callout capable. This switch allows the
pilot to turn on and off (mute) the range, relative altitude and relative bearing
callout from the aural TA's. When the switch is in the "Normal" position the
standard phrase "Traffic, Traffic" is still annunciated.
Any SPST toggle switch (1/2 A @ 28 V dc) may be used.
CONNECTION
Connector-Pin
P1-32
CABLE
Minimum 22 AWG unshielded cable
VOLTAGE
Active:
Inactive
NOTE
Signal Name
(AUDIO_H) - 600 Ω
(AUDIO_L) - 150 Ω
(AUDIO_C) Audio Common
. The Debug Port
19,200
8
None
1
Signal Name
DIAG_RX
DIAG_TX
DIAG_GND
CTS
RTS
Signal Name
EXT_AUDIO_SW
Min: 0.0 V dc
Max: 1.5 V dc
Min: 3.5 V dc (open)
Max: 5.0 V dc
(internal 10K pull-up resistor)
009-11900-001
Revision F
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