GTR 225/GNC 255 TSO Installation Manual 190-01182-02
Page 6-8 Rev. B
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.
Figure 6-11. ARINC 429 Page
Table 6-7. ARINC 429 Configuration Speed (TX)
Table 6-8. SDI Selections
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.
Table 6-9. DME Settings
Selection Description
LO SPEED Standard low-speed ARINC 429 (nominally 12.5 kilobits per second)
HI SPEED High-speed ARINC 429 (nominally 100 kilobits per second)
Selection Description
COMMON Generates all 429 outputs with SDI = 0
VOR/ILS 1
Number 1 (Pilot) VOR/ILS Receiver
TX: Generates all 429 outputs with SDI = 1
VOR/ILS 2
Number 2 (Copilot) VOR/ILS Receiver
TX: Generates all 429 outputs with SDI = 2
SERIAL
For use with serial Electronic Flight Instruments (EFIS) conforming to the
Garmin Serial Data Specification. See Appendix B
Selection Description
King Serial King Serial DME tuning data
Parallel 2x5 2 of 5 parallel DME tuning
Parallel BCD Shifted BCD (Binary Coded Decimal) parallel DME tuning
Parallel Slip Slip-code parallel DME tuning
Narco 890/891
2 of 5 parallel DME tuning, compatible with the following Narco DME units:
DME 890
DME 891
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