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]
Summary of Contents for EXO Series
Page 21: ...SVS VISTEK Connectors 21 ...
Page 26: ...SVS VISTEK Dimensions 26 Side Right Top ...
Page 27: ...SVS VISTEK Dimensions 27 Bottom Back ...
Page 28: ...SVS VISTEK Dimensions 28 Cross Section 6 2 exo250 CL exo252 CL front side Left ...
Page 29: ...SVS VISTEK Dimensions 29 ...
Page 30: ...SVS VISTEK Dimensions 30 Side Right Top ...
Page 31: ...SVS VISTEK Dimensions 31 Bottom Back Cross Section ...
Page 32: ...SVS VISTEK Dimensions 32 6 3 exo267 CL exo304 CL ...
Page 33: ...SVS VISTEK Dimensions 33 ...
Page 34: ...SVS VISTEK Dimensions 34 ...
Page 35: ...SVS VISTEK Dimensions 35 6 4 exo4000 CL front side Left ...
Page 36: ...SVS VISTEK Dimensions 36 Side Right Top ...
Page 37: ...SVS VISTEK Dimensions 37 Bottom Back ...
Page 38: ...SVS VISTEK Dimensions 38 Cross Section ...
Page 39: ...SVS VISTEK Dimensions 39 6 5 exo5000 U3 front side Left ...
Page 40: ...SVS VISTEK Dimensions 40 Side Right Top ...
Page 41: ...SVS VISTEK Dimensions 41 Bottom Back Cross Section ...
Page 65: ...SVS VISTEK Feature Set 65 ...
Page 71: ...SVS VISTEK Feature Set 71 Figure 42 I O Lines with open end indicate physical in and outputs ...
Page 124: ...SVS VISTEK Troubleshooting 124 Space for further descriptions screenshots and log files ...