Glazier Test Tool Guide
If the test is passed for the final onsite installation, apply a green TESTED label (as provided by View) to the
IGU cable or Smart Window Connector and move on to the next test.
Step 4: Start test
Once the GTT indicates it is ready to test, press the test button to begin testing. The test can take up to 30
seconds to be completed. The LED indicator on the bottom of the device will go either solid red or solid
green to indicate either pass (green) or fail (red). Flashing lights indicate that the test is still underway.
The progress indicator lights indicate different states before, during and after testing. Consult the table
below for troubleshooting of different LED configurations of the progress indicators.
Cable Damage:
Any cable damage will either lead to a failed completed test or failure to begin the test. If
the GTT is fully connected and the test won’t begin (flashing red light), this indicates either a damaged cable
or missing IGU parameters. Depending on which wire in the cable is damaged, the test may do a full test and
then fail or fail to start completely. Both should be considered failures.
Missing Smart Window Connector Parameters:
If the IGU parameters are missing, the test will fail to start
and show double blinking light on large indicator light as per chart above.
Non tinting IGU:
If an IGU is completely unable to tint and hold charge (i.e. Busbar disconnected), the test
will fail.
What types of failures does the GTT test for?
Tinting Performance:
The GTT does not tint the glass. Slow tinting IGU’s are not tested as part of this test.
Visual Defects:
The GTT does not tint the glass so visual defects will not be visible. Otherwise, working IGU’s
which have halos or other visual defects will pass the GTT test.
What types of failures does the GTT not test for?
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Dec 2020
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