GH-3100
Installation & Operation Manual
TP-559
Operation
Page 5-29
Revision K
March 30, 2017
Figure 5-19: Example of ARINC 429 NAV & CSDB NAV Interconnect
5.3.5.1 ILS Mode
The indicator enters ILS Mode when the pilot chooses to display VOR / ILS information through the
main menu and the NAV receiver is in the ILS mode. An ILS frequency is defined as having an odd
number in the tenths of MHz position over the range of 108.10 MHz through 111.95 MHz.
When in ILS Mode the indicator displays an ILS descriptor and a left / right deviation indicator. If the
pilot has selected ILS Normal Mode through the main menu an up / down deviation indicator is shown in
addition to the left / right deviation indicator and ILS descriptor.
SOFTWARE VERSION 1.X
If the indicator is configured for ARINC 710 ILS Receiver, the VOR/ILS NAV mode is considered ILS
mode.
SOFTWARE VERSION 3.X
If the indicator is configured for ARINC 710 ILS Receiver, and an ARINC Input bus is configured for
VOR/ILS1 this NAV mode is considered ILS mode only. If the indicator is configured for ARINC 710
ILS Receiver, and an ARINC Input bus is configured for VOR/ILS2 this NAV mode is considered VOR
mode only.
5.3.5.1.1 ILS Descriptor
The descriptors are “ILS”, “ILS 1”, “ILS 2”, or “ILS 3”.
When in ILS Mode using ARINC 429 input Buses and the pilot has selected the bus receiving the
VOR/ILS 1 data, the source of the deviations are identified according to the VOR/ILS 1
ANNUNCIATOR configuration.
When the pilot has selected the input receiving the VOR/ILS 2 data, the source of the deviations are
identified according to the VOR/ILS 2 ANNUNCIATOR configuration.
When in ILS Mode using CSDB Bus 1, configured to VOR/ILS 1 and the pilot has selected the bus
receiving the VOR/ILS 1 data, the source of the deviation is identified according to the VOR/ILS 1
ANNUNCIATOR configuration.
When in ILS Mode and the CSDB Bus 1 is configured as AUTO. The bus data identifies the source of the
shown data.
