GE SpotChecker Operating Manual page 80

Technical specifi cations
Rectifi cation
Suppression
DAC/TCG
DGS
Monitor gates
Distance measurement
Measurement resolution
Amplitude
80
full-wave, positive half-wave, negative half-wave, RF display
(up to 150 mm/5.9" steel)
0 ... 90 % linear
DAC with up to 16 curve points (reference refl ectors), dynamic range 37 dB,
maximum slope 6 dB/μs; 3 additional curves at adjustable dB distances, can be
changed to TCG (time-corrected gain) mode (horizontal recording threshold);
meets national and international test specifi cations
recording curves for all valid equivalent refl ector sizes and probes with DGS ca-
pability; setting as DAC or TCG; evaluation in dB related to curve, ERS or class
(JIS); sound attenuation and transfer correction; reference refl ectors used: back-
wall, circular disk refl ector and side-drilled hole
2 independent monitor gates, adjustable over the entire maximum calibration
range; evaluation on the basis of A-scan at display refresh rate; gate alarm: off,
coincidence, anticoincidence; visual and/or acoustic alarm
individually selectable for each gate at the echo fl ank or peak, in the RF mode ad-
ditionally at the zero transition of the increasing or decreasing echo fl ank
– initial pulse and measurement point in gate A or B
– measuring points: gate B – gate A (differential measurement)
sound path/time of fl ight: up to 12.6 mm: 0.01 mm;
otherwise 0.2 % of display width
0.5 % screen height or 0.2 dB
Issue 02, 03/2009
Specifi cations SpotChecker
SpotChecker