Checkline DFX-7 - Manual (Page 32)

Dakota Ultrasonics
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RECT WAVE: 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 123 for
further info.
DETECT MARK: Selectable graphics option for the point of detection on the
waveform: Line, Box, Dots, None. Offers the user a graphics preference on how
they prefer to view the detection on the waveform.
3.5 TUNE – Menu
MEASURE MODE: Toggles a variety of unique measurement modes for different
application requirements: Coating Off (P-E), Coating On (PECT), Temp Comp
(PETP), Thru Coat (E-E), Thru Verify (E-EV), Coating Only (CT). Refer to page 37
for further info.
POLARITY: The DFX-7 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 125 for further info.
PULSE: The DFX-7 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. The options are Spike, Thin, and Wide. Refer to page 127 for a further
explanation.
PULSER VOLTAGE: This feature offers a 50 volt cut/boost to the pulser. The
standard setting is 150 volts. This enables the DFX-7 to offer greater penetration for
difficult material types, or increased resolution on noisy materials. Refer to page 128
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 119 for further info.
ATTN: This feature is a 20dB attenuator, as well as a 20dB amplifier. The primary
purpose is to is to offer further flexibility to the DFX-7 , by either cutting or boosting
signal strength. In instances where the 60 dB range is not enough, or too much, this
feature allows you to increase/decrease the amplifier strength by a power of 10 or
(20dB). The standard setting is zero, which is an arbitrary value at a constant
attenuation. The attenuation value is added to the gain value. Therefore, if the
attenuator is increased to 20dB, this value is added to the value of the gain setting.
Refer to page 129 for a further explanation.