Checkline TI-MVX - Manual (Page 15)

3.5 TUNE – Menu
Gain: Increases or decreases the overall amplitude
of the signal. Much like turning the volume up or
down on a stereo receiver. Refer to page 47 for
further info.
AGC: The TI-MVX is equipped with an automatic gain control when operating in
echo-echo mode only. This is much like turning the volume up or down on a
stereo receiver. However, the TI-MVX will automatically control how much the
volume is turned up or down. Alternatively, the AGC can be manually controlled
using the same procedures as GAIN described above. Refer to page 46 for
further info.
Threshold: Enables the user to set the sensitivity level of the TI-MVX. The
amplitude of the signal must reach and exceed the threshold level before a
measurement is detected. Refer to page 48 for further info.
Polarity: The TI-MVX operates on a zero crossing detection principle. This
feature toggles which stroke of the cycle the crossing detection uses, either
positive or negative. Refer to page 61 for further info.
Rect Waveform: This option provides the user an outlined or filled view option
when the display setting is in RECT (rectified) wave mode only. Refer to page
63 for further info.
3.6 GATE – Menu
Measure Mode: Used to select the measurement
mode for different application requirements. The
modes are P-E (pulse-echo), P-E GT(pulse-echo
w/gate), and E-E(echo-echo). Refer to page 23 for
further info.
Gate 1: Gates allow the user to view areas or sections of the waveform and
ignore others. Gate 1 can be used in both pulse-echo and echo-echo measure-
ment modes. Refer to page 50 for further info.
Gate 2: Gates allow the user to view areas or sections of the waveform and
ignore others. Gate 2 is only used in echo-echo measurement mode. Refer to
page 53 for further info.
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Setting the Coordinates of the Grid
Note: A grid is defined by using coordinates to define the Top Left and the
Bottom Right corners of the grid. Alpha coordinates are horizontal across the
top, and numeric coordinates are vertical down the side. Therefore, to define the
top left corner of the grid, there will be an (X,Y) coordinate. Where X is an alpha
column location across the top and Y is a numeric row location down the side.
Use the same logic when choosing the lower right corner.
Setting the Top Left Coordinate
1) Use the UP and DOWN arrow keys to scroll
through the new Grid List Items until TOP LEFT is
highlighted.
2) Press the ENTER key to activate the Coordinate
Edit Box.
3) Use the LEFT, & RIGHT arrow keys to scroll the
Columns, and the UP, DOWN arrow keys to scroll
the Rows.
4) Press the OK key to select the coordinate and
return to the Grid List Items screen, or ESC to
cancel the selection and return to the Grid List
Items menu.
Setting the Lower Right Coordinate
1) Use the UP and DOWN arrow keys to scroll
through the new Grid List Items until LOWER
RIGHT is highlighted.
2) Press the ENTER key to activate the
Coordinate Edit Box.
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