User's Manual Part 2

T
2
CAS / Part No. 9000000
SYSTEM DESCRIPTION AND INSTALLATION MANUAL
34-43-20
15 Feb 2003
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4--51
Table 4--6. TAWS/RWS Non--Configurable Pinout(cont)
Pin
Designation
Functional DescriptionSignal
RTP--14K dc Output Reference Return: This is the Analog Reference
Return for the +5 Vdc Output
Reference voltage on pin
RTP--14J. Hence, the output
voltage is measured between the
Analog Reference +5 Vdc output
and Analog Reference Return
output.
RTP--15A Audio Output -- 8Ω (H) The 8Ω analog outputs are used
to drive a speaker in the aircraft
for the annunciation of aural
alerts. The TCAS has it’s own
audio output, and TAWS and
RWS functions share an audio
output. The TCAS and
TA WS/RWS outputs are
independent and separately
controlled.
RTP--15B Audio Output -- 600Ω (H) The 600Ω analog outputs are
used to drive an intercom or
headset in the aircraft for the
annunciation of aural alerts. The
TCAS has it’s own audio output,
and TAWS and RWS functions
share an audio output. The
TCAS and TAWS/RWS outputs
are independent and separately
controlled.
RTP--15C Audio Output -- 8Ω (L) / 600Ω (L) This is the Ground return for
both the 8Ω and 600Ω Audio
outputs (RTP--15A and --15B
respectfully).
RTP--15D APM Power This is the +12 Vdc power
source for the Airplane
Personality Module.
RTP--15E APM Return This is the Ground return for
+12 Vdc APM power source.
See pin RTP--15D
RTP--15F APM Clock This the APM Clock Output
which is used to synchronize
serial output to the APM. The
Clock output frequency is 2.0
MHz + 1% when the APM is
being accessed and is set to a
logic 0 (not toggling) when the
APM is not being accessed.