© PCE Instruments
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Fig. 9
– Display of signal in the complex plane (XY)
Fig. 10
– Mix of two frequencies (MIX)
The flaw detector has the mechanism of automatic flaw alarm (ALARM). It is
provided for the creation of up to 4 "frames" (threshold levels) of alarm for
each frequency and mix (examples of threshold levels see Figure 14, 15, 16,
17). These frames together with the signal form an event (for example, the
threshold level exceeding by the signal). An operator is able to adjust the
reaction to an event. Reaction to an event can be the following:
− LEDs illuminating on the instrument panel;
− or LEDs illuminating and sound alarm.
"ALARM" menu setup
This menu allows setting of ALARM (automatic flaw alarm). There is a
possibility to setup ALARM for each frequency and mix. ALARM itself is the
response of flaw detector to the event occurring at crossing or non-crossing
of alarm frame (threshold level) by a signal. All in all one alarm frame can be
activated for each frequency.
