Allied Vision Technologies MF-145B2 Instruction Manual download pdf (Page 148)

Marlin Technical ManualV.2.7.0

148

Controlling image capture

Microcontroller-Sync is an internal signal. It is generated by the microcontroller

to initiate a trigger. This can either be a direct trigger or a release for ExSync if

the camera is externally triggered.

End of exposure to first packet on the bus

After the exposure, the CCD or CMOS sensor is read out; some data is written into

the FRAME_BUFFER before being transmitted to the bus.

The time from the end of exposure to the start of transport on the bus is:

500 μs ± 62.5 μs

This time 'jitters with the cycle time of the bus (125 μs).

Figure 74: Data flow and timing after end of exposure

OneShot Command

C-> ExSync

Integration-Start

Timebase Reg.

Shutter-Reg.

Offset

Processing Delay

< 250µs

<= 8µs

Timebase x Shutter + Offset = Exposure Time

First Packet on Bus

<= 500µs

+/-62.5 µs

Exposure

Marlin F-033: 12 µs

Marlin F-046 12µs

Marlin F-080: 30 µs

Marlin F-080-30fps: 17 µs

Marlin F-145: 26µs

Marlin F-146: 26 µs

Marlin F-201: 39 µs

Marlin F-131: < 1 µs

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Allied Vision Technologies MF-145B2 Instruction Manual Page 148