Appendix B Troubleshooting
© National Instruments Corporation B-5 NI 17xx Smart Camera User Manual
may restart. Ensure that your lighting wire connections are correct
and/or reconfigure your lighting settings in MAX or Vision Builder AI.
• You have requested an amount of current within the specified range
of the smart camera and within the maximum lighting current settings
you configured in MAX or Vision Builder AI. If your application
requests more current than either of these two options, the smart
camera disables the Direct Drive until an allowable current level is
requested and the acquisition is reinitialized.
• If you are strobing, the on time required to illuminate for your
requested exposure time plus the lighting turn-on time does not exceed
the maximum allowed strobe duration. Refer to Chapter 5, Image
Acquisition, for more information.
• If you are strobing, the duty cycle does not exceed the maximum
allowed duty cycle at your requested frame rate. Refer to Chapter 5,
Image Acquisition, for more information.
• The on voltage of the light is within the specifications of the Direct
Drive lighting controller. Refer to Appendix A, Specifications, for
more information.
• The voltage drop of the light may have exceeded the maximum voltage
or minimum voltage requirements of the smart camera. The voltage
drop of a light can vary significantly with environmental conditions,
such as temperature, current, and strobe time. Verify that the voltage
drop across the LED+ and LED– terminals is within the specified
range of the smart camera. Your light may need to be reconfigured by
the manufacturer to bring the voltage drop within the specified range
of the smart camera. Refer to Appendix A, Specifications, for more
information.
There is No External Lighting Strobe
Possible causes and solutions:
• If you have configured the NI Smart Camera for triggering in MAX or
Vision Builder AI, verify that the smart camera is receiving a trigger.
This can be verified by checking that the IMG ACQ LED on the smart
camera illuminates when a trigger is provided on the TrigIn+/IsoIn(0)+
and TrigIn–/IsoIn(0)– pins. If you are not receiving a trigger, refer to
the No Trigger is Received troubleshooting section.
• If you are using the 24 V strobe output, verify that there is enough time
between frames for the strobe output to fully turn off before being
re-enabled. The required time will vary with the load conditions, but is
typically a few milliseconds. If a faster response is necessary, use the
5 V strobe output.
