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5 Functionality
The falling edge of the trigger pulse is delayed by the time t
d
−
iso
−
input
which results from the
signal isolator. This signal is clocked into the FPGA which leads to a jitter of t
jitter
. The pulse is
then delayed by t
trigger
−
delay
by the user defined value which can be configured via camera
software. After the trigger offset time t
trigger
−
offset
the exposure is stopped.
In the trigger pulse width controlled exposure mode the falling edge of the
trigger signal for the next frame must not arrive before the end of the readout
of the current frame (see also the timings in Section 5.1.7). If this condition is
not fulfilled then not all rows are read out and the image has fewer rows than
specified by the ROI parameters.
5.2.5
Trigger Delay
The trigger delay is a programmable delay in milliseconds between the incoming trigger edge
and the start of the exposure. This feature may be required to synchronize the external strobe
with the exposure of the camera.
5.2.6
Strobe Output
The strobe output is an isolated output located on the power supply connector that can be
used to trigger a strobe. The strobe output can be used both in free-running and in trigger
mode. Strobe settings:
Strobe_Delay
Programmable delay delay from the active input trigger edge to the rising edge
of the strobe output signal.
Strobe_PulseWidth
Width of the trigger pulse in
µ
s. A setting of 0 turns off the strobe output.
Strobe_Invert
Inverts the strobe output signal. Strobe_Invert=False: strobe signal active high,
Strobe_Invert=True: strobe signal active low.
The strobe output needs a separate power supply. Please see Section 6.5, Fig.
5.11 and Fig. 5.12 for more information.
5.2.7
Burst Trigger
The camera includes a burst trigger engine. When enabled, it starts a predefined number of
acquisitions after one single trigger pulse. The time between two acquisitions and the number
of acquisitions can be configured by a user defined value via the camera software. The burst
trigger feature works only in the mode "Camera controlled Exposure Time".
The burst trigger signal can be configured to be active high or active low. When the frequency
of the incoming burst triggers is higher than the duration of the programmed burst sequence,
then some trigger pulses will be missed. A missed burst trigger counter counts these events.
This counter can be read out by the user.
The burst trigger mode is only available when
TriggerMode
=On. Trigger source is determined by
the
TriggerSource
property.
The timing diagram of the burst trigger mode is shown in Fig. 5.15.
.
48 of 123
MAN069 12/2018 V1.1
Summary of Contents for MV1-D4096 Series
Page 1: ...Photonfocus MV1 D4096 Camera Series CMOS camera with GigE interface MAN069 12 2018 V1 1 ...
Page 10: ...1 Preface 10 of 123 MAN069 12 2018 V1 1 ...
Page 12: ...2 Introduction 12 of 123 MAN069 12 2018 V1 1 ...
Page 32: ...4 Product Specification 32 of 123 MAN069 12 2018 V1 1 ...
Page 94: ...6 Hardware Interface 94 of 123 MAN069 12 2018 V1 1 ...
Page 108: ...7 Software 108 of 123 MAN069 12 2018 V1 1 ...
Page 110: ...8 Mechanical Considerations 110 of 123 MAN069 12 2018 V1 1 ...
Page 112: ...9 Troubleshooting 112 of 123 MAN069 12 2018 V1 1 ...
Page 118: ...12 Support and Repair 118 of 123 MAN069 12 2018 V1 1 ...
Page 120: ...13 References 120 of 123 MAN069 12 2018 V1 1 ...
Page 124: ...B Camera Revisions 124 of 123 MAN069 12 2018 V1 1 ...