Dakota Ultrasonics
30
4.6 TUNE – Menu
GAIN:
The
MAX II
has 100dB gain range from (-30 to 70 dB), used in conjunction
with the attenuator feature above. This feature is used to increase/decrease the
power or amplitude of the signal. This might easily be considered as similar to
turning the volume up or down on a stereo receiver. Refer to page 139 for further
info.
PULSE:
The
DFX-8
has an adjustable pulse width for both high penetration and
resolution applications. The pulse width refers to the duration of time the pulser is
on. There are three different types of pulsers built into the
MAX II
– Spike, Square
Wave, and Tone Burst with adjustable voltage options of 100-400 volts and select
settings of Spike, Thin, Wide, HV Spike, HV Thin, HV Wide, TB 10MHz, TB 5MHz,
TB 2MHz, and TB 1MHz. Refer to page 171 for a further explanation.
PULSER VOLTAGE:
Adjustable voltage of 100-400 volts, depending on the pulser
option selected. The standard setting is 150 volts. This enables the
MAX II
to offer
greater penetration for difficult material types, or increased resolution on noisy
materials. Refer to page 163 for a further explanation.
DAMPING:
Provides the user with multiple input impedances to match the
impedance of the transducer, and optimized overall transducer performance. Refer
to page 165 for further info.
DIGITIZER:
Increases the measurement resolution by 2x or 4x by increasing the
number of shots/samples. The higher the sample digitizer rate, the better the
resolution, but the slower the update rate/speed and visa versa. Refer to page 163
for a further explanation.
4.7 GATES – Menu
POLARITY:
The
MAX II
operates on a zero crossing detection principal. This
feature toggles which stroke of the cycle the crossing detection uses, either positive
or negative. Refer to 13.10 for further info.
Summary of Contents for MAX II
Page 2: ......
Page 7: ......
Page 8: ......
Page 54: ...Dakota Ultrasonics 46 Figure 6 Reflection in a bending bolt ...
Page 215: ......