Nano-5G Series GigE Vision Camera
Troubleshooting
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195
No camera exposure when expected
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Verify by using the camera in free-running mode. Do not use external trigger mode when
testing a camera setup.
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If using free-running mode, verify that the exposure period is set to the maximum possible
for the set frame rate.
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Load the factory default from the Power-up Configuration in CamExpert. This will reset the
camera to its nominal acquisition rate.
Camera acquisition is good but frame rate is lower than expected
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While running CamExpert and grabbing in free run mode, check the GigE Vision Transport
Layer Control to verify and possibly increase the Interpacket Delay. In multi-camera setups
using a Gigabit Ethernet switch, the Device Link Throughput may need to be reduced so
that each camera can equally share the available bandwidth.
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While running CamExpert and grabbing in free-run mode at the maximum frame rate, start
the
Sapera Monitor
tool from the Sapera Tools installed with Sapera.
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Make sure the
Memory Overflow
event monitor is enabled.
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Continue grabbing from the Nano-5G at maximum frame rate. If any memory overflow
events are counted, then the Nano-5G internal buffer could not be transmitted on time and
was discarded. Such a condition may occur with large frame color or high frame rate Nano-
5G cameras.
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Note that the Sapera CamExpert tool has limits to the maximum frame rate possible due to
CamExpert generating an interrupt for each acquired frame. The Sapera Grab Demo may be
better suited for testing at higher frame rates.
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Verify that network parameters are optimal as described in the Teledyne DALSA Network
Imaging Module manual. Ensure the host computer is not executing other network intensive
tasks. Try a different Gigabit NIC.
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Note that a changed acquisition frame rate becomes active only when the acquisition is
stopped and then restarted.
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If using an external trigger, verify the trigger source rate and Nano-5G parameters such as
trigger to exposure delay.
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USB to Ethernet adapters are not recommended nor guaranteed. Even in cases where the
camera seems to be connected and transferring images, reports of random disconnections
are common. If the user wishes to try such an interface, limit this to just one high quality
unit, never more. Multiple units have not worked in a machine vision environment.
Camera is functional, frame rate is as expected, but image is black
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Verify that the lens iris is open.
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Aim the Nano-5G at a bright light source.
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Check that the programmed exposure duration is not too short or set it to maximum.
See Sensor Control Category.
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Using CamExpert set the Nano-5G to output its Internal Pattern Generator. This step is
typically done for any camera installation to quickly verify the Nano-5G and its software
package. See Internal Test Pattern Generator for information on using CamExpert to select
internal patterns from Nano.
Summary of Contents for Genie Nano-5G Series
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