User`s manual

Genie HM Series-GigE Vision Camera Troubleshooting • 145
Configuration Recommendations with Laptops
• In the NIC configuration, keep the jumbo frame size set to the maximum allowed. See "Optimizing the
Network Adapter used with Genie" on page 25.
• If VPN software is installed, most likely the VPN driver must be disabled in the NIC properties (open via
Control Panel). This would be required only on the NIC used with the Genie.
• Run the Sapera Log Viewer: Start•Programs•DALSA•Sapera LT•Tools•Log Viewer. Start the Genie
acquisition program, such as CamExpert. There should not be any "packet resend" messages, else this indicates
problem due to poor connections or extremely high EMI conditions.
• Packet resends might also be eliminated by adjusting the GigE parameter Inter-Packet Delay. Using CamExpert
(see "
CamExpert GigE Vision Parameters" on page 74), increase the inter-packet delay value from 0 to
0.000050 (50µs) and test again.
Problems with Disconnecting NICs
Genie cameras installed in environments with physical motion, vibrations, or high EMI may be disconnected by the
NIC. The following items need to be reviewed to solve the problem.
• Motion or vibrations may cause data loss because the Ethernet cable connection is not secure. Use a locking
Ethernet cable (see "
Ruggedized RJ45 Ethernet Cables" on page 125).
• High EMI may cause the NIC to drop data or to disconnect and reconnect at a lower data rate. Such situations
do not have simple solutions and may require an expert consultant.
• Some NIC products may not tolerate any data disruptions. Any condition causing the NIC to drop the
connection may make it unrecoverable. Communication with the Genie can not be reestablished without power
cycling. In this case, trying a variety of NIC products is suggested.
Ethernet Switch Issues
An Ethernet switch usually works transparently and presents no problems. Review the following list when
troubleshooting switch issues.
Basic Points for all Ethernet Switches
• Is the Ethernet switch powered on.
• Are all ports used configured as active; not disabled.
• Are all ports running at gigabit speeds–not low speed (i.e. not 10 or 100 Mbps).
• Is the switch configured to use Jumbo Frames.
• Verify the Ethernet cabling. Poor cables will cause connections to auto-configure at lower speeds.
More Complex Configurations
• When using a VLAN Ethernet switch, confirm that the Genie and controlling computer are on the same
VLAN group setup on that switch.
• When using a chain of switches, ensure that inter-switch connection speeds are the same (1000 Mbps).
• When using a multi-port switch with multiple Genie cameras all grabbing, problems such as individual
cameras randomly disconnecting, point to a switch fault with high traffic configurations. Change the switch
to one from a different manufacture or a later model. This condition was identified with an Advantech 8
Port Unmanaged Industrial Ethernet Switch EKI-2728 and the manufacturer claims to have resolved the
issues with a revised version (internal identification: -BE).
Image Loss with Many Cameras Connected to one NIC
• Example: A large number of cameras are connected to one NIC and each camera works correctly when
tested. But when all cameras are triggered simultaneously, images are lost from a number of cameras. In
such a case the NIC maximum bandwidth is exceeded if there is no mechanism to temporarily hold back