Wavecom W61PC V7.5.0 - Manual (Page 99)

WAVECOM Decoder W61PC/LAN Manual V7.5 Analysis Tools  89
The time duration of a video line, and thus the display resolution, is set with the sliders in Time per Line.
The range is 20,000 s (0.02 s) to 10,000,000 s (10 s) per graphical line and sampling takes place in
steps of 14 s. One graphical display line corresponds to the preset time.
Selecting the Start/Stop button controls the effective data sampling.
By moving the mouse cursor a text field is displayed. The value of the positioned segment is continuously
displayed in microseconds (s) and in Baud (Bd) with the graphical cursor. The graphical representation of
V1 channel polarity (mark or space) corresponds to the value of the displayed time and the converted
baud rate.
Also the correlation can be determined by using bit correlation. The number of time units per line set in
Time per Line in addition to the baud rate, constitute the preset values for the correlation.
The following example shows a correlation of 111 bits. The baud rate is 228.66 Bd. Hence the calculation
of the total system cycle length is (1/228.66) x 111 = 0.4854369 s.
By right-clicking on the display a menu appears. By selecting Zoom In, the mouse cursor changes its
shape. By clicking and dragging a field can be enlarged or reduced horizontally and vertically. After the
zoom field has been sized, release the mouse button. An enlarged section of the bit correlation is now dis-
played.