Page 6-18
GTN 625/635/650 TSO Installation Manual
Rev. C
190-01004-02
6.8
GTN Diagnostics Page
Access the GTN Diagnostics page, as shown in Figure 6-23, by touching the ‗GTN Diagnostics‘ key on
the Configuration Mode page. The following sections describe the pages that are available on the GTN
Diagnostics page.
Figure 6-23. GTN Diagnostics Page
6.8.1
ARINC Inputs Page
The ARINC Inputs diagnostics page allows the display of ARINC 429 data that is being received over
each ARINC 429 port. Each port can be chosen for display by touching the ‗Port‘ key and toggling
between the input ports. Select a port to display. The GTN will then display the label, SSM, Data, and
SDI for each ARINC 429 input port. The data log can be paused by toggling the ‗Pause‘ key. Clear the
data log by touching the ‗Clear Log‘ key.
6.8.2
Serial Inputs Page
The Serial Inputs page allows the display of serial data that is being received and is useful for determining
if the GTN is receiving data on each connected port. Select the desired port by touching the key labeled
‗Port‘ and selecting the RS-232 channel from the list. The data log can be paused by toggling the ‗Pause‘
key. Clear the data log by touching the ‗Clear Log‘ key.
6.8.3
Discrete Pages
6.8.3.1
Discrete Inputs Page
The Discrete Inputs page displays the state of each discrete input of the GTN. To perform a checkout of
all discrete inputs see Section 6.10.3.
6.8.3.2
Discrete Outputs Page
The Discrete Outputs page displays the state of each discrete output of the GTN and allows the state to be
toggled. To perform a checkout of all discrete outputs see Section 2.
6.8.4
HSDB (Ethernet) Page
The HSDB (Ethernet) page displays the status of each HSDB port. This page displays whether or not each
port is receiving data and displays whether the port is connected or not connected. The configuration
status of each installed HSDB LRU is also displayed. See Section 6.10.5 for HSDB port configuration
instructions.
6.8.5
Main Indicator (Analog) Diagnostics Page
The Main Indicator (Analog) Diagnostics page allows the CDI connected to the main board (P1001) to be
ground checked and allows the interface to be verified. For the Main Indicator checkout procedure, see
Section 6.10.1.
