SVS-VISTEK
Feature-Set
84
7.3.4
PWM
Pulse width modulation
Description of the function used within the sequencer or implemented by
the pulseloop module
During Pulse Width Modulation, a duty cycle is modulated by a fixed
frequency square wave. This describes the ratio of ON to OFF as duty
factor or duty ratio.
Why PWM?
Many electrical components must be provided with a defined voltage.
Whether it’s because they do not work otherwise or because they have the
best performance at a certain voltage range (such as diodes or LEDs).
Diode characteristic
Since LEDs have a bounded workspace, the PWM ensures a variable
intensity of illumination at a constant voltage on the diodes.
In addition, the lifetime of a diode increases. The internal resistance is
ideal in this area. The diode gets time to cool down when operated with a
PWM in its workspace.
Implementation of PWM
Modulation frequency:
The basic frequency of the modulation is
defined by the cycle duration "T".
𝑇
𝑃𝑃𝑃
=
1
𝑓
𝑃𝑃𝑃
Cycle duration "T" is written into the registry by
multiple of the inverse of camera frequency.
(15 ns steps) Refer to:
𝑇
𝑃𝑃𝑃
=
1
66, 6
�𝑀𝑀𝑀
∙
PWMMax[SeqSelector]
= 15
𝑛𝑠
∙
PWMMax[SeqSelector]
Содержание EXO Series
Страница 5: ...Contents v 11 IP protection classes 125 12 Glossary of Terms 126 13 Index of figures 129 14 Index 132 ...
Страница 18: ...SVS VISTEK Getting Started 18 4 6 Driver Circuit Schematics Figure 4 basic Illustration of driver circuit ...
Страница 21: ...SVS VISTEK Connectors 21 ...
Страница 26: ...SVS VISTEK Dimensions 26 Side Right Top ...
Страница 27: ...SVS VISTEK Dimensions 27 Bottom Back ...
Страница 28: ...SVS VISTEK Dimensions 28 Cross Section 6 2 exo250 CL exo252 CL front side Left ...
Страница 29: ...SVS VISTEK Dimensions 29 ...
Страница 30: ...SVS VISTEK Dimensions 30 Side Right Top ...
Страница 31: ...SVS VISTEK Dimensions 31 Bottom Back Cross Section ...
Страница 32: ...SVS VISTEK Dimensions 32 6 3 exo267 CL exo304 CL ...
Страница 33: ...SVS VISTEK Dimensions 33 ...
Страница 34: ...SVS VISTEK Dimensions 34 ...
Страница 35: ...SVS VISTEK Dimensions 35 6 4 exo4000 CL front side Left ...
Страница 36: ...SVS VISTEK Dimensions 36 Side Right Top ...
Страница 37: ...SVS VISTEK Dimensions 37 Bottom Back ...
Страница 38: ...SVS VISTEK Dimensions 38 Cross Section ...
Страница 39: ...SVS VISTEK Dimensions 39 6 5 exo5000 U3 front side Left ...
Страница 40: ...SVS VISTEK Dimensions 40 Side Right Top ...
Страница 41: ...SVS VISTEK Dimensions 41 Bottom Back Cross Section ...
Страница 65: ...SVS VISTEK Feature Set 65 ...
Страница 71: ...SVS VISTEK Feature Set 71 Figure 42 I O Lines with open end indicate physical in and outputs ...
Страница 81: ...SVS VISTEK Feature Set 81 Strobe Control Example Setup Figure 47 Illustration of an application using the 4IO ...
Страница 102: ...SVS VISTEK Specifications 102 Spectral sensitivity characteristics Figure 64 IMX183LQJ Figure 65 IMX183LLR Color Mono ...
Страница 105: ...SVS VISTEK Specifications 105 Spectral sensitivity characteristics Figure 66 IMX249LQJ Figure 67 IMX249LLJ Color Mono ...
Страница 108: ...SVS VISTEK Specifications 108 Spectral sensitivity characteristics Figure 68 IMX250LQJR Figure 69 IMX250LLR Color Mono ...
Страница 111: ...SVS VISTEK Specifications 111 Spectral sensitivity characteristics Figure 70 IMX267LQR Figure 71 IMX267LLR Color Mono ...
Страница 114: ...SVS VISTEK Specifications 114 Spectral sensitivity characteristics Figure 72 IMX304LQR Figure 73 IMX304LLR Color Mono ...
Страница 124: ...SVS VISTEK Troubleshooting 124 Space for further descriptions screenshots and log files ...
Страница 135: ...SVS VISTEK Index 135 Vertical Binning 59 Viewer Software 14 Warranty 121 WARRANTY 7 121 White Balance 54 Why PWM 84 ...