180 CONTENTS
19.9.1 Single camera samples (HRTC)
Note
Please have a look at the Hardware Real-Time Controller (HRTC) (p. 124) chapter for basic information.
Using a single camera there are following samples available:
• Achieve a defined image frequency (HRTC) (p. 180)
• Delay the external trigger signal (HRTC) (p. 181)
• Take two images after one external trigger (HRTC) (p. 183)
• Take two images with different expose times after an external trigger (HRTC) (p. 184)
• Edge controlled triggering (HRTC) (p. 186)
19.9.1.1 Achieve a defined image frequency (HRTC)
Note
Please have a look at the Hardware Real-Time Controller (HRTC) (p. 124) chapter for basic information.
With the use of the HRTC, any feasible frequency with the accuracy of micro seconds(us) is possible. The program
to achieve this roughly must look like this (with the trigger mode set to ctmOnRisingEdge):
0. WaitClocks( <frame time in us> - <trigger pulse width in us>) )
1. TriggerSet 1
2. WaitClocks( <trigger pulse width in us> )
3. TriggerReset
4. Jump 0
So to get e.g. exactly 10 images per second from the camera the program would somehow look like this(of course
the expose time then must be smaller or equal then the frame time in normal shutter mode):
0. WaitClocks 99000
1. TriggerSet 1
2. WaitClocks 1000
3. TriggerReset
4. Jump 0
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