Glazier Test Tool Guide
Turn on the GTT by holding down the center button for 3 seconds. The LED lights will turn on to indicate the
device is on. Ensure there is available battery charge by checking the battery indicator as shown below. If
the charge is low, charge the device using the included 12V DC Wall Charger. The GTT can take up to 8 hours
for a full charge.
Ensure battery is charged:
STOP: The glass must be clear
In order to have an accurate test result, the glass must be clear (free of charge). Please ensure that a
shorting cap is on the IGU Smart Window Connector. If there is no shorting cap, please connect one and wait
15 minutes before testing. This must be done for all windows.
Step 1: Connect GTT to IGU Cable or Smart Window Connector
In order to test, attach M8K connection on the GTT to the IGU cable or Smart Window Connector to be
tested.
Testing:
Battery Indicator
OR
Battery Indicator
Progress Indicators
See Table on next page
Test Status Indicator
Solid red or green light indicates
pass or fail
M8K Connection
OR
OR
Step 2: Attach the alligator clip to the window
frame or bonded metal if testing field cabling
Attach the alligator clip to a grounded metal part
(not anodized or painted) of the frame to create a
common ground (without this, the system will be
unable to test for ground shorts such as a screw
going through cable or bare wire touching the
frame). This is required for all testing where the
cabling is inside the frame (not required for IGU
receipt testing). If the frame does not have raw
metal to connect, connect to a screw going into the
frame. If there is a doubt whether there is continuity
between the frame and the alligator clip, complete
a continuity test between the alligator clip body
and the frame to be connected using a digital
multimeter.
Step 3: Ensure GTT is ready to test
The GTT can start testing once it reads the Smart Window Connector. This will be indicated by a slowly
flashing green light on the test status indicator. This should take less than 5 seconds. If the indicator does not
indicate the test is ready within 10 seconds, there is an issue with the cable and the test has failed.
3
Dec 2020
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