Owner's manual

DFX-8 Ultrasonic Thickness Gauge

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 41

for further info.

POLARITY: The DFX-8 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-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. 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-8 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 122 for further info.

GAIN:

The DFX-8 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 77 for further info.

AGC:

This an automatic gain control used in E-E (echo-echo), and E-EV (echo-echo

verify). The DFX-8 is equipped with an automatic gain control when operating in -E

(echo-echo), and E-EV (echo-echo verify) modes only. This feature automatically

increases/decreases the power or amplitude of the signal, to an optimal input to

output signal ratio. This might easily be considered as similar to turning the volume

up or down on a stereo receiver. Alternatively, the AGC can be manually controlled.

The DFX-8 is equipped with manual override, using an arbitrary range of 1-20 clicks.

The higher the number the better the dynamic gain range, and visa versa. Refer to

page 77 for further info.