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GTN 725/750 Cockpit Reference Guide (CRG)
190-01007-04 Rev. C
Glove Qualifi
cation P
rocedur
e
GLOVE QUALIFICATION PROCEDURE
This procedure is used to qualify a specifi c glove for use with the GTN
system by guiding the user through a variety of tasks that use the touchscreen.
Due to differences in fi nger size, glove size, and touchscreens between the
6XX or 7XX unit, the qualifi cation granted by this procedure is specifi c to the
pilot/glove and 6XX or 7XX combination. GTN 7XX and 6XX units must be
evaluated separately.
The GTN touchscreen uses capacitive touch technology to sense the
proximity of skin to the display. A glove increases the distance between skin
and the display glass and may reduce the ability of the GTN to detect touches.
Therefore, when selecting a glove for use with the GTN, thinner gloves tend
to work better than thicker gloves. Leather gloves and gloves designed to
work specifi cally with capacitive touchscreen devices are often found to be
acceptable. Additionally, altering your touch technique to use the pad of
your fi nger to touch the unit rather than the tip will increase the touchscreen
sensitivity while using gloves.
This qualifi cation must be completed on the ground. Performing this
procedure in fl ight is not authorized. “Tests Required for Glove Qualifi cation”
table contains tasks that are required to qualify a glove. “Test Not Required
for Glove Qualifi cation” table contains tasks that are not required to qualify a
glove, but may limit the manner in which some functions are accessed while a
glove is worn.
1. Sit in the pilot’s seat.
2. Start the GTN in Demo mode by pressing and holding the Direct To key
during power up.
3. Perform the tasks listed in the following sections with an ungloved hand.
You do not need to record any results for this step.
4. Perform the tasks listed in the following sections with a gloved hand. For
each task, determine whether the operation is the same or worse as it
was without the glove. Record the results in the applicable table. Items
that may cause the operation to be worse include, but are not limited to:
a. Multiple attempts to select a key
b. Unintentional selection of adjacent keys
c. Excessive force on the touchscreen to select a key
Содержание GTN 725
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