SVS-VISTEK
Feature-Set
81
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 eco4050TR
Страница 1: ...3 23 2017 Manual EVO Tracer series evo1050TR evo2050TR evo2150TR eco4050TR evo4070TR evo8051TR ...
Страница 15: ...SVS VISTEK Getting Started 15 Installation will proceed 8 Installation completed ...
Страница 17: ...SVS VISTEK Getting Started 17 Conform to GenICam all control features will be listed in a flat tree diagram ...
Страница 21: ...SVS VISTEK Getting Started 21 4 7 Driver Circuit Schematics Figure 6 basic Illustration of driver circuit ...
Страница 32: ...SVS VISTEK Connectors 32 ...
Страница 36: ...SVS VISTEK Dimensions 36 ...
Страница 37: ...SVS VISTEK Dimensions 37 ...
Страница 78: ...SVS VISTEK Feature Set 78 Strobe Control Example Setup Figure 73 Illustration of an application using the 4IO ...
Страница 131: ...SVS VISTEK Troubleshooting 131 Space for further descriptions screenshots and log files ...