Analog Inputs Page; Power Statistics Page; Waas Diagnostics Page; Temperatures Page - Garmin GTN 635 Installation Manual

6.8.6 Analog Inputs Page

The Analog Inputs page displays the bus voltage setting for Lighting Bus 1 and Lighting Bus 2 as well is
the input voltage setting for each bus. It also displays synchro heading input diagnostics information such
as heading angle, heading valid status, AC voltage, and AC frequency.

6.8.7 Power Statistics Page

The Power Statistics page displays the number of times the GTN has powered up as well as the total
elapsed operating hours for the GTN.

6.8.8 WAAS Diagnostics Page

The WAAS diagnostics page displays the WAAS engine status, including UTC date/time, current
Lat/Lon, overall navigation status, oscillator temperature, and AGC voltage. This page also allows the
GPS/WAAS engine to be reset.

6.8.9 Temperatures Page

The Temperatures page displays the current, minimum, maximum, and average board temperatures for
the LED board, main board, display interface board, GPS/WAAS board, and COM board.

6.8.10 Error Log Page

The Error Log page allows the error log to be written to the SD card in the front slot. It also allows the
error log to be cleared.

6.8.11 Main Data Inputs Page

The Main Data Inputs page allows the data on ARINC 429, RS-232, and other electrical inputs to be
monitored. This is used for verifying electrical interfaces during installation and troubleshooting.
Information that is not being received by the GTN is dashed out.

6.8.12 VOR/ILS Indicator (Analog) Page

The VOR/ILS Indicator (Analog) Diagnostics page allows the CDI connected to the NAV board (P1004)
to be ground checked and allows the NAV indicator interface to be verified. See Section 6.10 for the
ground check.
GTN 625/635/650 TSO Installation Manual Page 6-19
190-01004-02 Rev. C