Page 6-32
GTN 625/635/650 TSO Installation Manual
Rev. C
190-01004-02
6.10 Ground Checks (Configuration Mode)
The following checks are done in Configuration Mode. For instructions concerning entering
Configuration Mode, see Section 6.4.
6.10.1
Main Indicator Check (Analog Only)
NOTE
If the GTN is interfaced to an electronic HSI and the main indicator analog output is not
used, this check is not required.
If the GTN is interfaced to an analog indicator on the main
CDI/OBS, perform the following steps:
1.
Access the Main Indicator (Analog) Diagnostics
page, as shown in Figure 6-37 by touching the
‗Main Indicator (Analog)‘ key on the GTN
Diagnostics page.
2.
Verify correct operation of the lateral deviation,
flag and TO/FROM flag using the corresponding
selections.
3.
Verify correct operation of the vertical deviation
and flag using the corresponding selections.
4.
Verify correct operation of the OBS knob using the SELECTED COURSE display. At 30°
increments around the OBS card, ensure that the indicated value is within 2° of the value set on
the indicator. If the resolver is not within 2°, calibrate the resolver as described in Section 6.6.5.
6.10.2
VOR/ILS Indicator (Analog) Diagnostics
If the GTN is interfaced to an analog indicator on the
VOR/ILS Indicator output, perform the following steps:
1.
Access the VOR/ILS Indicator (Analog)
Diagnostics page, as shown in Figure 6-38, by
touching the ‗VOR/ILS (Analog)‘ key on the
GTN Diagnostics page.
2.
Verify correct operation of the lateral deviation,
flag and TO/FROM flag using the corresponding
selections.
3.
Verify correct operation of the vertical deviation
and flag using the corresponding selections.
4.
Verify correct operation of the OBS knob using the SELECTED COURSE display. At 30°
increments around the OBS card, ensure that the indicated value is within 2° of the value set on
the indicator. If the resolver is not within 2°, calibrate the resolver as described in Section 6.6.11.
Figure 6-37. Main Indicator (Analog)
Diagnostics Page
Figure 6-38. VOR/ILS Indicator (Analog)
Diagnostics Page
