190-01007-C1
GTN Xi Part 23 AML STC Maintenance Manual
Rev. 1
Page 3-19
3.2.5 GTN Diagnostics
The
GTN Diagnostics
page is accessed from the Configuration mode home page and is a useful tool for
diagnosing issues and troubleshooting problems. Ground checks are performed using the tools on this
page.
Figure 3-18 GTN 6XX Xi and GTN 7XX Xi GTN Diagnostics Pages
ARINC Inputs
Displays the ARINC 429 data being received over each ARINC 429 port. This is useful for determining if
the expected labels are being received and for troubleshooting incorrect or swapped wiring to the input
ports. Each port is chosen for display by touching the
Port
key and selecting between the input ports. The
GTN Xi will display the label, SSM, Data, and SDI for the selected ARINC 429 input port. The data log
can be paused by toggling the
Pause/Unpause
key. Clear the data log by touching the
Clear Log
key.
Serial Inputs
Displays the serial data being received. This is useful for determining if the GTN Xi is receiving data on
each connected port. Select the desired port by touching the
Port
key and selecting the RS-232 channel
from the list. The data log can be paused by toggling the
Pause/Unpause
key. Clear the data log by
touching the
Clear Log
key.
Discrete Inputs
Displays the state of each discrete input. This page is useful for troubleshooting discrete wiring issues.
Discrete Outputs
Displays the state of each discrete output and allows them to be toggled between
Active
and
Inactive
. This
is useful for ensuring that annunciator and signal outputs are properly connected to annunciator lights or
other LRUs, and that they are receiving the signal.
