TH2883 Series Operation Manual Chapter 2 General specifications
2-2
Comparison output PASS/FAIL display
Beeper alarm
Beep mode ON (adjust for high and low tone), OFF
Memory Built-in memory: 100 files
USB disk memory
Interface HANDLER (START, STOP, PASS, NG, BUSY, EOC, etc.)
RS232C USB Device USB Host LAN
2.2 Comparison methods
2.2.1 Area size comparison
As shown in figure 2-1, when comparison method is set to AREA SIZE, the area sizes of both
standard waveform and the tested waveform are calculated (integration method) between A and
B. The percent deviation is the ratio of the area size difference to the area size of the standard
waveform between A and B, expressed as a percentage.
Figure 2-1 Area Size Comparison
The area size of the waveform is nearly proportional to the energy loss in the winding. When a
sample winding has a short circuit between layers, the short circuit area is reflected as an
increase of energy loss.
2.2.2 Differential area comparison
When comparison method is set to Differential Area, TH2883 calculates the area size of
differential portion between the standard waveform and the tested waveform from A to B. (The
differential portion area size is indicated as the shaded part in Figure 2-2.) The percent deviation
is the ratio of the differential portion area size to the area size of the standard waveform between
A and B, expressed as a percentage.
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