Dme Tuning Configuration; Dme Tuning Calibration And Checkout; Dme Tuning Interconnect References; Htaws Interfaces - Garmin GPS 400W Installation Manual

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.
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
AUDIO 1 HI
AUDIO 1 LO
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
REDUCED PROTECTION (RP MODE)
TERRAIN CAUTION ANNUNCIATE
TERRAIN WARNING ANNUNCIATE
TERRAIN NOT AVAILABLE ANNUNCIATE
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.
Page 4-22
Rev. G
NOTE
Connector
P4001
P4001
Connector
P4001
P4001
P4001
P4001
GNS 400W Series Installation Manual
Pin I/O
37 Out
38 Out
Pin I/O
7 Out
8 Out
12 Out
13 Out
190-00356-08