Cygnus 4+ Operating Manual
M5-CYG4P-M-01_Iss5.doc
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2.
The Gain is set to 42 dB.
The A-Scan shows a back wall
echo signal around 100% height
and there is a thickness value.
This is the optimum setting.
3.
The Gain is set to 55 dB.
The A-Scan shows a back wall
echo signal which goes off the
screen, there are also other
earlier smaller echoes that are
becoming significant. The
thickness measurement is still
ok however.
Ideally you would reduce the
gain down to get a 100% high
signal.
Adjusting the Range
Press the Menu key and check that Range is ticked – select it if it
isn’t. Then in the measurement screen with the A-scan displayed
use the
⇧
or
⇩
keys to adjust the Range as required.
1.
When Range is selected the
range value is highlighted blue.
Here the range is set to 20mm
[20]