Cabling And Communication Problems - Teledyne FLIR A68 Series User Manual

Camera acquisition is good but frame rate is lower than expected
• 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.
• Make sure the Memory Overflow event monitor is enabled.
• Continue grabbing from the A68/A38 at maximum frame rate. If any memory
overflow events are counted, then the A68/A38 internal buffer could not be
transmitted on time and was discarded. Such a condition may occur with large
frame color or high frame rate A68/A38 cameras.
• 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.
• 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.
• Note that a changed acquisition frame rate becomes active only when the
acquisition is stopped and then restarted.

Cabling and Communication Problems:

• Use a shielded cable where the connector shell electrically connects the A68/A38
chassis to the power supply earth ground.
• Check that the Ethernet cable is clipped both to the A68/A38 and the NIC or switch
on the other end.
• Verify the Ethernet cabling. Poor cables will cause connections to auto-configure at
lower speeds. Use a secured Ethernet cable when the A68/A38 is in a high vibration
environment. See
• Check the Ethernet status LEDs on the NIC used with the camera. The Link Status
indicator is on and the activity LED should flash with network messages.
• Verify that the Ethernet cable is CAT5e or CAT6. This is very important with long
cable lengths.
• When using very long cables, up to the maximum specified length of 100m for
gigabit Ethernet, different NIC hardware and EMI conditions can affect the quality of
transmission.
• Minimum recommended Ethernet cable length is 3 feet (1 meter).
• Use the Log Viewer tool (see point below) to check on packet resend conditions.
Run the Sapera Log Viewer: Start•Programs•Teledyne DALSA•Sapera
LT•Tools•Log Viewer. Start the A68/A38 acquisition program, such as
CamExpert. There should not be any "packet resend" messages, else this indicates
a control or video transmission problem due to poor connections or extremely high
EMI environments.
164 • Troubleshooting
Ruggedized RJ45 Ethernet Cables
.
FLIR A68/A38 Series IR Camera User's Manual