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22 TCG - TIME CORRECTED GAIN
The TCG function increases gain as distance increases in order to achieve an overall level of
sensitivity for the same reflector at different distances. The gain is adjusted at each selected point
to display the signal amplitude at a predetermined reference level.
Further
information
www.elcometerndt.com.
22.1 SETTING UP THE TCG FUNCTION
Before setting up and using the TCG function you must:
1. Conduct a two point calibration - see "Known Thickness Calibration" on page 30.
2. If you are going to use the TRIG mode, set it up before using the TCG function - see "Setting
up Trigonometry Mode" on page 37.
TCG SETTINGS
Setting
Values
TCG
ON
AUDIBLE
OFF
DRAW
ON
OFF
CURVE
ON
OFF
% SCRN
Numerical
HEIGHT
value
ADJUSTING TCG SETTINGS
1. Select MENU/TCG
2. Use the LEFT and RIGHT keys to scroll the value, or press ENTER to open the digits edit box
and adjust the value using the navigation buttons
3. Press OK to set the value and return to the menu screen, or ESC to cancel.
4. Press MEAS to return to the measurement screen.
can
be
found
on
Function
Enables the TCG function.
Enables audible signal.
Disables the TCG function.
When disabled, all the other menu items are greyed out.
Enables draw mode.
Disables draw mode.
Enables TCG correction curve and displays the curve on the
measurement screen.
Disables TCG correction curve.
Sets the reference level of the TCG as a percentage of full
screen height (FSH).
the
Elcometer
NDT
Knowledge
Centre
on
42
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