Checkline DFX-7 - Manual (Page 133)

DFX-7
Ultrasonic Flaw Detector
129
option to the user. 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. The procedure to change the pulser voltage is outlined below:
Changing the Pulser Voltage
1) Press the MENU key once to activate the menu items tab. Press the MENU
key multiple times to tab right and the ESC key multiple times to tab left until
the TUNE menu is highlighted and displaying the submenu items.
2) Use the UP and DOWN arrow keys to scroll through the sub menu items
until PULSER VOLT is highlighted.
3) Use the LEFT and RIGHT arrow keys to scroll the Pulser Voltage options.
4) Once the desired Pulser Voltage is displayed, press the MEAS key to
return to the measurement screen.
10.14 Attenuator
The DFX-7 is equipped with a 20dB signal attenuator and amplifier. This feature
offers a cut/boost to the overall signal strength. 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