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页码 127
 
Genie Monochrome Series-GigE Vision Camera 
Troubleshooting    113 
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 
" on page 97
).  
•  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. 
•  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.   
•  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).  
 
Multiple Camera Issues 
•  When using multiple cameras with a computer with multiple NIC ports, confirm each Genie has been assigned 
an IP address by checking the GigE server (see 
"
).  
•  Do not use multiple NIC port configured in LLA. In this case use a DHCP server or persistent IP. 
•  When using multiple cameras connected to an VLAN Ethernet switch, confirm that all cameras are on the same 
subnet setup on that switch. See 
"