Checkline TI-MVX - Manual (Page 38)

3) Use the LEFT and RIGHT arrow keys to scroll the view options. Once the
appropriate view is displayed, press the MEAS key to return to the measurement
screen.
7.2 Display Views
RF
The RF mode shows the waveform in a simi-
lar fashion to an oscilloscope. It shows both
the positive and the negative peaks. The peak
(either positive or negative) selected for
measurement is shown in upper portion of
the display.
It’s important to note that a measurement
must fall inside the displays viewable range in
order to see the waveform. However, even if
the waveform is outside of the viewable range
of the display, a measurement can be taken
and viewed on the digital readout. If the wave
is outside of the display range, you can man-
ually change the range by adjusting the Delay
and Width values, or you can use the Auto
Find feature located in the UTIL menu of the tabbed menu items. Refer to page
58 for additional information on the Auto Find feature.
The following is a list of the viewable features on the display:
A) Stability of Reading Indicator – Indicates the stability of the return echo on a
scale of 1 to 6 – the solid bars displayed in the figure above indicate a repeat-
able signal. If the TI-MVX is displaying a reading from memory, the repeatability
indicator will be replaced by the text “MEM”.
B) Battery life Indicator – Fully charged batteries will appear filled in solid. Note:
The diagram shows the batteries at approximately 50%.
C) Thickness Reading – Digital readout of thickness (inches or millimeters).
D) Detect Indicator – The broken vertical line displays the zero crossing (flank)
detection point on the waveform where the measurement has been obtained.
Notice that the digital thickness readout is the same as the location of the detect
indicator according to the measurements labels F, also in the diagram.
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DIGITS VIEW
The Digits view is a basic digital thickness
gauge look and feel. The larger digits make it
much easier for the operator to monitor the
thickness readings. The Scan Bar has also
been added to the Digits view to provide the
user with yet another visual tool for easily moni-
toring changes in thickness readings due to
internal flaws or defects.
The following is a list of the viewable features
on the display:
A) Stability of Reading Indicator – Indicates the
stability of the return echo on a scale of 1 to 6
– the solid bars displayed in the figure above
indicate a repeatable signal. If the TI-MVX is displaying a reading from memory,
the repeatability indicator will be replaced by the text “MEM”.
B) Battery life indicator – Fully charged batteries will appear filled in solid. Note:
The diagram shows the batteries at approximately 50%.
C) Thickness reading – Digital readout of thickness (inches or millimeters).
D) Large Digits – Large readout of thickness (inches or millimeters).
E) Units Label – Display’s the current unit of measurement (inches or millime-
ters).
F) Measurement Labels – The measurement labels are calculated and displayed
based on where the left side of the display has been set (Delay), and the overall
viewable area (Width) of the display. Note: The gray hash marks break the dis-
play up into 5 segments, or quadrants. The measurement labels correspond to
the measurement at each hash mark.
G) Scan Bar – The scan bar corresponds directly with thickness represented by
the horizontal labels on the on the display. As you can see from the diagram
above, the filled horizontal bar is displayed at .500”. This display can be very
useful when scanning materials in either B-Scan or Digits display views. It is
much easier to watch and notice deflections for flaws and pits using the scan
bar, rather than trying to notice changes in the digital value. If the user is scan-
ning a pipe, for instance, and passes over a pit during the process, the scan bar
will quickly deflect and alarm the user to go back and search for the defect.
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