Figure 6-11. Arinc 429 Page; Table 6-7. Arinc 429 Configuration Speed (Tx); Table 6-8. Sdi Selections; Table 6-9. Dme Settings - Garmin GTR 225 Installation Manual

6.4.2.2 ARINC 429 (GNC Only)
The ARINC 429 page (Figure 6-11) allows the installer to configure the NAV ARINC 429 output on the
GNC. Configure the port according to the connected VOR/ILS indicator. See Table 6-7 and Table 6-8 for
description of the configuration speeds.
Selection
LO SPEED
HI SPEED
Selection
COMMON
VOR/ILS 1
VOR/ILS 2
SERIAL
6.4.2.3 DME Configuration (GNC Only)
Select the DME configuration page to configure the DME channel mode settings.
6.4.2.3.1 Mode (DME Channel Mode)
This configuration setting allows the installer to set the format for DME tuning data output. See Table 6-9
for DME settings.
Selection
King Serial
Parallel 2x5
Parallel BCD
Parallel Slip
Narco 890/891
GTR 225/GNC 255 TSO Installation Manual
Page 6-8

Figure 6-11. ARINC 429 Page

Table 6-7. ARINC 429 Configuration Speed (TX)

Description
Standard low-speed ARINC 429 (nominally 12.5 kilobits per second)
High-speed ARINC 429 (nominally 100 kilobits per second)

Table 6-8. SDI Selections

Description
Generates all 429 outputs with SDI = 0
Number 1 (Pilot) VOR/ILS Receiver
TX: Generates all 429 outputs with SDI = 1
Number 2 (Copilot) VOR/ILS Receiver
TX: Generates all 429 outputs with SDI = 2
For use with serial Electronic Flight Instruments (EFIS) conforming to the
Garmin Serial Data Specification. See Appendix B

Table 6-9. DME Settings

Description
King Serial DME tuning data
2 of 5 parallel DME tuning
Shifted BCD (Binary Coded Decimal) parallel DME tuning
Slip-code parallel DME tuning
2 of 5 parallel DME tuning, compatible with the following Narco DME units:
DME 890
DME 891
190-01182-02
Rev. B