Texas Instruments DLP LightCrafter 6500, User Manual, Page: 16 / 60

J21
J19
J25
J22
Pin 3
Pin 2
Pin 1
Pin 3
Pin 2
Pin 1
Pin 3
Pin 2
Pin 1
Pin 3
Pin 2
Pin 1
DLP LightCrafter 6500 Connections
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16 DLPU028C – October 2014 – Revised November 2016
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DLP LightCrafter 6500 and 9000 Module Overview
1.5.2 DLP LightCrafter 6500 Trigger Input and Output Voltage Selectors
The trigger inputs on J20 are inputs from external devices to control the pattern sequence. While trigger
input 2 is high, trigger input 1 will advance the pattern sequence to the next pattern in the sequence on
every pulse.
The trigger outputs on J24 are outputs to control external devices. While trigger output 1 going high
indicates the start of the exposure time of the pattern (and going low indicates the stop), trigger output 2
marks the beginning of each pattern start with a 20 µs pulses. Trigger output 1 can be used for triggering
a camera and capturing the patterns as they are displayed on some object. A computer can then use
trigger output 2 to keep track of each pattern. The captured images can then be reassembled to produce,
for example, a 3D point cloud.
Both input and output triggers have voltage level selectors. Use J19, J21, J22, and J25 to select the
voltage as shown in
Figure 1-6 . If no voltage is selected, then the onboard logic will not be functional and
any outgoing or incoming signals will not available.
Figure 1-6. DLP LightCrafter 6500 Trigger Voltage Level Selectors