GE MFE DMS 2 Operating Manual page 18

1. Getting Started
FIGURE 1-5—With the probe
coupled (be sure to use
couplant) and the instrument
set to the Test mode, the
DMS 2 display should look like
the one shown here. If your
instrument isn't registering a
thickness value, first try
adjusting the GAIN, so that the
A-scan ECHO crosses the
A-gate. Press under GAIN
to change the level of gain.
Increasing the gain increases
the amplitude of the displayed
signal and the height of the
echo. (Refer to Section 4.4.2
for more information on
adjusting the GAIN, or see
Section 4.4.5 on how to
change the A-gate height.)
DMS 2 Operating Manual Page 7