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5.3 GATE 3
5.3.1
Available Modes of GATE 3
-
OFF,
-
ON (positive logic) without any alarm,
-
ON
♪
+ (positive logic) with acoustic alarm,
-
ON
♪
- (negative logic) with acoustic alarm
-
AUTOFREEZE – any signal within GATE 3 level, which exceeds the gate level
for 1 sec. or more, will cause automatic freezing of actual picture (screenshot),
indicated by the red indicator
*FROZEN*
. The picture then may be saved – see
3.6.2. This function is used with SPOT WELD mode (optional).
5.3.2
Function of GATE 3
Intended use – monitoring of back wall
echo etc.
Fully independent GATE 3 may be
switched ON in any operation mode of
the instrument. It measures echo
position and echo peak height (% FSH),
marked with yellow cross. Values are
displayed directly underneath the gate.
Acoustic alarm with positive and negative trigger logic may be applied.
There is a possibility of GAIN correction within GATE 3 for monitoring of back wall
echo simultaneously with small defects detection.
Actual GAIN correction (GATE 3 ±XX.X dB) is displayed at the center of the right
section of the display (instead the REJECT value) in the GATES menu with GATE 3
switched on (ON, ON
♪
+ or ON
♪
-).
Notes: If required gain correction within GATE 3 cannot be executed due to actual
setting of the attenuator and basic GAIN, a figure of the gain correction is
displayed in red colour.
Info about actual gain correction is displayed with small text directly under
GATE 3 ON.
