Baumer VisiLine, Руководство пользователя

Страница: 55 / 68

55
In general, the transmission delay is calculated as:
∑
≥
+ − + =
n
3 n
) 1 n Camera ( gE transferGi ) n Camera ( osure exp ) 1 Camera ( readout ) 1 Camera ( osure exp ) n Camera ( onDelay Transmissi
t t t t t
Therewith for the example, the transmission delays of camera 2 and 3 are calculated as
follows:
t
TransmissionDelay(Camera 2)
= t
exposure(Camera 1)
+ t
readout(Camera 1)
- t
exposure(Camera 2)
t
TransmissionDelay(Camera 3)
= t
exposure(Camera 1)
+ t
readout(Camera 1)
- t
exposure(Camera 3)
+ t
transferGige(Camera 2)
Solving this equations leads to:
t
TransmissionDelay(Camera 2)
= 32 msec + 23.8 msec - 32 msec
= 23.8 msec
= 7437750 ticks
t
TransmissionDelay(Camera 3)
= 32 msec + 23.8 msec - 32 msec + 14.9 msec
= 38,7 msec
= 1209375 ticks
Notice
In BGAPI the delay is specified in ticks. How do convert microseconds into ticks?
1 tick = 1 ns
1 msec = 1000000 ns
1 tick = 0,000001 msec
ticks= t
TransmissionDelay
[msec] / 0,000001 = t
TransmissionDelay
[ticks]