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8.1.9
Increasing the gain on preamplifier
and amplifier
you
should maximize the signal amplitude, but at the same time monitor behind
parameters of the input circuit.
8.1.10
After changing any parameter that affects the absolute value of
the signal it is necessary to perform balancing by pressing
key.
8.1.11
While testing aluminum alloys it is recommended to use the
vertical gain " V GAIN" for the visual spread of signals from the distortion
and signals from a defect in a phase.
8.1.12
Select the required type of a threshold level.
8.1.13
Move the probe across the artificial defect at calibration block for
several times and visually set up the ALARM relative to the signal from the
defect. After the ALARM was properly set up, the light alarm while detecting
the defect will be triggered on the flaw detector keypad (digital indicators on
the display) and sound alarm (if it has not been turned off in "SETTINGS"
menu).
8.2
REFLECTION, DIFFERENTIAL PROBE
8.2.1
Connect the ECP to the flaw detector using a connecting cable.
8.2.2
Select parameter "PROBE"– "Reflection" or "Bridge" type (in the
"TEST" menu).
8.2.3
Set the ECP frequency in a range specified in the registration
certificate for the ECP.
8.2.4
Set the ECP drive not more then recommended in a registration
certificate for the ECP.
8.2.5
Place the ECP to the flaw-free area of a calibration block.
8.2.6
Press
key to balance the ECP.
8.2.7
It is recommended, the signal from the defect to be placed in the
first or second quadrant of the complex plane. To correct the ECP phase use
parameter.
8.2.8
Increasing the gain on preamplifier and amplifier you should
maximize the signal amplitude, but at the same monitor behind parameters of
the input circuit.
8.2.9
After changing any parameter that affects the absolute value of a
signal it is necessary to perform balancing by pressing
key.
8.2.10
Select the required type of a threshold level.
8.2.11
Move the probe across the artificial defect at calibration block for
several times and visually setting up the ALARM relative to the signal from the
defect. After the ALARM was properly set up, the light alarm while detecting