Difference between revisions of "Screen Trigger Device specifications"

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[[File:Sscreen Trigger Device TSL25xR specs.png|200px|Left|TSL25xR specs]]
 
[[File:Sscreen Trigger Device TSL25xR specs.png|200px|Left|TSL25xR specs]]
 
==Speed test Screen Trigger Device==
 
==Speed test Screen Trigger Device==
A led was connected to the output of the function generator. The led was used to illuminate the photodiode.
+
A led was connected to the output of the function generator. The led was used to illuminate the photo diode.  
  
The function generator signal is shown in yellow.
+
*The function generator signal is shown in yellow.
 +
*The output of the screen trigger detector is shown in red.
  
The output of the screen trigger detector is shown in red.
+
*Risetime and falltime of the screen trigger detector is about 0.2 mSec
  
Risetime and falltime of the screen trigger detector is about 0.2 mSec
 
 
[[File:Screen_Trigger_Device_Speed_Test.png|200px|Left|TSL25xR specs]]
 
[[File:Screen_Trigger_Device_Speed_Test.png|200px|Left|TSL25xR specs]]

Revision as of 13:28, 20 November 2023

Description

The screen trigger device is a small optical sensor that can be mounted in the corner of a screen. It contains a photo diode with build in amplifier that senses the intensity of the screen locally. It has a BNC output that gives 0 Volt output when the screen is locally black and 5 V output when the screen is locally white. This can be used to create a digital timing signal for changes on the screen.

Design

The screen trigger devices has a TSL25xR photo sensor with build-in amplifier.

Screen Trigger Schematics

Components

  • Box: Hammond 1551 Series Black ABS Enclosure, IP54, Flanged, 50 x 35 x 20mm
  • Power supply: 5V, 2.5A, 2-Pin Type C - EuroPlug with 2.1mm DC connector
  • Socket: Cliff Electronic Components DC10A SOCKET, PCB, DC POWER, 2.1MM, PK10
  • Photo Diode: Taos TSL25xR
  • Resistor: 10 kOhm

Specsheet photo diode

TSL25xR specs

Speed test Screen Trigger Device

A led was connected to the output of the function generator. The led was used to illuminate the photo diode.

  • The function generator signal is shown in yellow.
  • The output of the screen trigger detector is shown in red.
  • Risetime and falltime of the screen trigger detector is about 0.2 mSec

TSL25xR specs