©
National Instruments Corporation
4-1
NI 177x Smart Camera User Manual
4
Connecting Lighting and
External Devices
This chapter provides information about connecting the NI 177x Smart
Camera to external devices, including external lighting and triggering
devices.
Connecting Lighting Devices
To connect a light directly to the NI 177x Smart Camera, connect the
LED_DRV signal to the positive terminal on the lighting device. Connect
the ground of the NI 177x Smart Camera and the lighting device to a
common ground.
The controlled current output sources current for a LED lighting device.
You can control the amount of current by specifying a value between 0 and
500 mA, in 256 steps.
To configure a light, you can enter the lighting data manually in MAX or
Vision Builder AI:
•
MAX
—Select the
Lighting
tab of the NI Smart Camera configuration
page and click
Configure Light
. The light must be configured in
MAX before you can use it in LabVIEW.
•
Vision Builder AI
—Select the
Lighting
tab of the
Acquire Image
(Smart Camera)
step and click
Configure Light
.
Connecting a Light Controller
You can connect a light controller to the NI 177x Smart Camera in order to
control any connected lighting devices.
Caution
The controlled current output is an unregulated output dependent on the range of
the power supply provided to the device. If the power provided to the device is ±10% with
+5% AC ripple, the controlled current output could be as high as 27.6 V. If the provided
power exceeds the input voltage specifications of the third-party lighting controller, do not
connect the controlled current output to the controller to prevent damage to the controller.
Use a power supply with tolerances that meet the requirements of the controller.
