UNI-T UTD4000 Series

91
UTD4000 Four-channel
User Manual
10. X-Y Phase difference table :
Ifsin or
θ is the angle of disparity between the channels For
definitions of A B C D see the above figure
Calculating with this formula the angle of disparity is
θ arcsin( ) or θ arcsin ( )
If the elliptic main axis is within quadrants I and III, the angle
ofdisparity should be within quadrants I and IV,i.e.inside
(0~ ) or ( ~ )
If the main axis is within quadrants II and IV, the angle of
disparity should be within quadrants II and III,i.e.inside
( ~ ) or ( ~ )
θ
= ,
.
, , , .
,
= =
.
.
± ±
π
3π
2
π
2
A
B
C
D
A
B
C
D
2π
π
2
π
3π
2