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1. Select MENU/TUNE/GAIN
2. Adjust to suit the measurement application.
3. Press MEAS to return to the measurement screen.
6.9 THRESHOLD
The threshold is the level of signal amplitude required to trigger a gate and activate the digital
thickness reading. Increasing the threshold value decreases the sensitivity of the gauge as a more
powerful signal is required to trigger the gate. For example on the A-scan display it may be clear
that there is a flaw in the material but the thickness reading is not taking this into account; lowering
the threshold has the effect of increasing the sensitivity of the gauge to a level that the flaw can be
detected. More information on thresholds can be found on the Elcometer NDT Knowledge Centre
on www.elcometerndt.com.
TO ADJUST THE THRESHOLD VALUE
The quickest way to adjust a threshold value is directly from the hot menu. Alternatively, adjust the
values using the menus:
1. Press MENU/GT1/THRESHOLD1 (THRESHOLD2 and THRESHOLD3 are accessed and
adjusted in the same way from the menus for GT2 and GT3 respectively).
2. Adjust to suit the measurement application.
3. Press MEAS to return to the measurement screen.
6.10 GATES
Your gauge is equipped with gates which control the time measurement process.
For instructions on how to use gates, see "Gates" on page 22.
6.11 ADJUSTING THE DISPLAY
Your gauge features an AMOLED display that you may customise to your preferences.
Changing the Display Brightness
Select MENU/DISP/BRIGHTNESS. Possible values are between 0 and 20
Changing the Display Refresh Rate
Select MENU/DISP/SCREEN UPDATE The AMOLED display can be set to refresh at either 60Hz
or 120Hz (times per second). Setting a high refresh rate may be beneficial when trying to detect
small defects in a material but comes at the cost of reduced battery life
Changing the Display Colour Scheme
Select MENU/DISP/COLORS Your gauge includes a range of display colour schemes.
Changing the Display DIM Time
1. Select MENU/DISP/DIM
2. Adjust to suit the measurement application
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