Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 5-86 Rev. 4
5.6.7 TAWS Audio Check (For Units with TAWS Only)
NOTE
The audio panel must also be powered on for the TAWS audio check
The TAWS audio volume has an initial default of 80% of the
maximum value. The TAWS volume needs to be set to ensure
that aural alerts are audible under all anticipated noise
environmental conditions.
1. Touch the Audio configuration page from the Main
GTN Setup page.
2. Under ‘Alert Volume’, increase or decrease the
volume by touching the + or - keys.
3. Evaluate the TAWS audio messages for acceptable
volume and intelligibility during both low and high
cockpit noise levels (idle descent at low speed and
high power at Vmo). See Section 5.8.6 for the flight
check procedure.
4. Readjust the Volume as needed to ensure the TAWS
audio messages will be heard in all anticipated cockpit
noise conditions.
5.6.8 GAD 42 Interface Check
This check verifies the interface between the GTN and the GAD 42.
1. Go to the GAD 42 Configuration Page from the
External Systems page. Touch External Systems, then
touch GAD 42.
2. Verify that Status is ACTIVE.
3. Change any of the options to a different number.
4. Verify that after changing one of the options the
STATUS field changes to SENDING then changes
back to ACTIVE. If the entry reverts to the previous
number when ACTIVE is displayed, then check the
wiring connections to the GAD 42. Refer to the GAD
42 Installation Manual for details on how to
configure the GAD 42.
Figure 5-52. GAD 42
Configuration Page
Figure 5-51. Audio
Configuration Page