Photon Focus MV1-R1280-50-G2 Camera Series, Руководство пользователя

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There is a bug in the single A/B trigger mode in some camera revisions (see Ap-
pendix B, A/B Trigger Bug). In this case when the encoder position moves back
and forth by a small amount, the EncoderCounter is incremented and the decre-
ment is sometimes omitted, leading to a wrong EncoderPosition indication in
the camera. Therefore the single A/B trigger mode should not be used in the
affected versions. To have the same behaviour as the single trigger mode, but
without the bug, use the double A/B mode and double the value of
ABTriggerDi-
vider .
A
B
G r a y C o u n t e r
E n c o d e r C o u n t e r
T r i g g e r F w d
T r i g g e r B k w d
0 1 2 3 0 1 2 3 2 1 0 3 2 1 2 3 0
0 1 2 1 0
T r i g g e r F w d B k w d
1
1
Figure 5.8: Single A/B Mode
A
B
G r a y C o u n t e r
E n c o d e r C o u n t e r
T r i g g e r F w d
T r i g g e r B k w d
0 1 2 3 0 1 2 3 2 1 0 3 2 1 2 3 0
0 1 2 3 4 3 2 1 2
T r i g g e r B k w d
1
3
Figure 5.9: Double A/B Mode
A
B
G r a y C o u n t e r
E n c o d e r C o u n t e r
T r i g g e r F w d
T r i g g e r B k w d
0 1 2 3 0 1 2 3 2 1 0 3 2 1 2 3 0
0 1 2 3 4 5 6 7 6 5 4 3 2 1 2 3 4
T r i g g e r F w d B k w d
1
5
Figure 5.10: Quad A/B Mode
.
5.2 Trigger and Strobe 43