hydratight
134
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
GAIN
is highlighted.
3) Press the
LEFT
and
RIGHT
arrow keys to scroll the value. When the
correct
Gain
is being displayed,
proceed to step 8
.
4)
Alternatively
, press the
ENTER
key to display the
Digits Edit Box
.
5) Press the
UP
and
DOWN
arrow keys to scroll the highlighted value.
6) Press the
LEFT
and
RIGHT
arrow keys to scroll the digit locations.
7) Repeat steps
5 & 6
until the
Gain
value is correctly displayed.
8) Press the
OK
key to set the
Gain
and return to the menu screen, or
ESC
to cancel entering the
Gain
.
9) Finally, press the
MEAS
key to return to the measurement.
12.5 Threshold
The
Threshold
is the level (sensitivity) of the signal amplitude required to trigger
detection. This level can be used in conjunction with the gain. Example:
suppose the user is not detecting on the first cycle of the waveform because the
amplitude of the first cycle is not large enough to break the current threshold.
Either the
Threshold
can be decreased (lower sensitivity), or the
Gain
increased
to cause a detection on the first cycle. This is also very important when the
reference length is being measured. If the threshold is set so that the amplitude
of the signal is just barely reaching the threshold, it should be decreased. If the
user does not increase it at that time, when the fastener is put under a load, the
same peak jumps can occur. Even though the threshold can be adjusted at a
