GE Ultrasonic USM Go, Operator'S Manual

Page: 73 / 190

Chapter 2. Instrument Setup
USM Go Operator’s Manual 55
2.6.2 Using AUTOCAL
Note:
While following the instructions in this section, refer to Figure 14 on page 56 .
1. In the
ACQUIRE
menu, activate the
AUTOCAL
submenu using the joystick ( ).
2. Use the joystick ( ) to select the function titled S-REF1 . Then, press the function toggle or move the joystick ( ) to change
the value to match the thickness of the thinner calibration standard. The S-REF1 function has both coarse and fine adjustment modes.
Coarse adjustments are made with the function toggle, while fine adjustments are made with the joystick.
3. Use the joystick ( ) to select the function titled
S-REF2
. Then, press the function toggle or move the joystick ( ) to change
the value to match the thickness of the thicker calibration standard. The S-REF2 function has both coarse and fine adjustment modes.
Coarse adjustments are made with the function toggle, while fine adjustments are made with the joystick.
4. Apply couplant and couple the probe to the thinner calibration standard. With the
A START
function highlighted, press the function
toggle or move the joystick ( ) to shift the starting point of Gate A until Gate A lies over the echo corresponding to the thickness of
the thinner standard (see Figure 14 on page 56 ). Coarse adjustments are made with the function toggle, while fine adjustments are made
with the joystick.