Garmin GPS 400W, Installation Manual

Page: 76 / 212

Page 4-22 GNS 400W Series Installation Manual
Rev. G 190-00356-08
4.10.3 DME Tuning Configuration
Refer to Section 5.3.14 for the DME tuning configuration.
4.10.4 DME Tuning Calibration and Checkout
None.
4.10.5 DME Tuning Interconnect References
Refer to Appendix H for interconnect information.
NOTE
For the GNS 430W to tune a Narco DME 890 or IDME 891 or an ARC (Cessna)
RTA-476A using parallel 2 of 5, unique wiring and configuration are required. Refer to
Section 5.3.14 and Figure H-24.
4.11 HTAWS Interfaces
The HTAWS interfaces are only available if the airframe is configured for helicopter and HTAWS is
enabled.
4.11.1 Audio
Pin Name Connector Pin I/O
AUDIO 1 HI P4001 37 Out
AUDIO 1 LO P4001 38 Out
The AUDIO 1 is a low impedance output and is capable of driving approximately 100mW into a
500 ohm load.
4.11.2 Annunciators
4.11.2.1 HTAWS
Pin Name Connector Pin I/O
REDUCED PROTECTION (RP MODE) P4001 7 Out
TERRAIN CAUTION ANNUNCIATE P4001 8 Out
TERRAIN WARNING ANNUNCIATE P4001 12 Out
TERRAIN NOT AVAILABLE ANNUNCIATE P4001 13 Out
The TERRAIN NOT AVAILABLE ANNUNCIATE sinks up to 250 mA when not active indicating the
terrain function is not available or is inhibited, and is annunciated on the front panel display.
The following annunciator outputs sink up to 250 mA when active:
The REDUCED PROTECTION (RP MODE) output is active when HTAWS is functioning in the
reduced protection mode (RP MODE).
The TERRAIN CAUTION ANNUNCIATE output is active when an HTAWS caution is active.
The TERRAIN WARNING ANNUNCIATE output is active when an HTAWS warning is active.