National Instruments NI Vision NI 17xx Benutzerhandbuch
Chapter 4
Lighting
4-6
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The minimum voltage drop specified for the light does not fall below
the specified range of the smart camera. Under some circumstances
some LEDs, particularly certain lights with infrared LEDs and lights
with only one LED per string, present a lower voltage drop than usual
and may be incompatible with the smart camera. These lights may
need to be reconfigured by the manufacturer to bring the voltage drop
within the specified range of the smart camera.
the specified range of the smart camera. Under some circumstances
some LEDs, particularly certain lights with infrared LEDs and lights
with only one LED per string, present a lower voltage drop than usual
and may be incompatible with the smart camera. These lights may
need to be reconfigured by the manufacturer to bring the voltage drop
within the specified range of the smart camera.
Note
The voltage drop of a light can vary significantly with environmental conditions,
such as ambient temperature, current supplied, and strobe time.
Refer to Appendix A,
, for complete specifications for the
Direct Drive lighting controller.
Connecting a Light to the Direct Drive Lighting Controller
This section applies only to the following NI Smart Cameras:
Figure 4-2 illustrates how to connect a light to the Direct Drive lighting
controller. Do not use the GND signal when connecting a light to the Direct
Drive lighting controller.
controller. Do not use the GND signal when connecting a light to the Direct
Drive lighting controller.
Figure 4-2. Connecting a Light to the Direct Drive Lighting Controller
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NI 1742
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NI 1762
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NI 1744
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NI 1764
LED–
LED+
LED
NI 17xx
Direct
Drive