NDT Systems Curlin-Air, Руководство пользователя

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10 10
Figure 8 - DISPLAY MENU
LEVEL
GATE level allows adjustment of the threshold level of the gate. Adjustable from 10% to 90% of
full screen height in 1% increment.
IF IN DISTance MODE (refer to Fig 8)
VELOCITY (VEL)
Sets the material velocity (inches/microsecond or mm/microsecond) used in calculations of
thickness. NOTE: The VELOCITY value will be decreased by approximately one-half from
reference velocity when ANGLE MODE is selected.
ZERO ADJUST (Zero)
A fine delay function which allows for compensation of transducer wearsurfaces, coupling
membranes and angle beam wedge. Adjustment is continuous from 0 to 300,000 nanoseconds.
BLOCK
BLOCKING GATE is used to Increase or Decrease the length of the gate that is used to block
out any unwanted signals after the Initial Pulse. Adjustment of the BLOCKING GATE will allow
proper setup for IP to first echo measurement in the distance mode. This is used if there is any
spurious noise between the IP and “real” received echo.
LEVEL
DISTance Gate Threshold allows Increase or Decrease the Measurement Threshold level. Any
echo with amplitude equal to or greater than the Thickness Gate Threshold will be measured.
The threshold gate is the bar on the left of the A-Trace frame extending to the first echo in the
figure. This is the vertical point on the echo envelope used for the DISTance measurement.
AUDIO
When AUDIO is On, the audible annunciator will sound when an alarm is activated. When
AUDIO is off, no sound is generated for alarms.
5.2.2 DISPLAY MENU
The functions grouped in the DISPLAY menu are primarily
used to select display related functions. Generally these will
be user preferences, with little, other than REJECT,
affecting calibration.
DISP
DISPlay - There are two selectable screen displays:
C
HOLLOW When selected, displays a black lined, hollow A-
trace waveform against a light background.
C
SOLID When selected, displays a black filled A-trace waveform against a light background.
SMOOTH
Smoothing, or averaging, is optionally performed on the waveform by setting each point to be the
average of itself and the point before and after it.
GRID
Turns the background grid on or off. Two types of grids can be displayed, Normal or Numbered.