6F8C0904 203
8.5 Troubleshooting
8
Network cable
check
1) Is the coaxial cable (10BASE5 or
10BASE2) grounded to a single
point with a resistance to ground of
100
Ω or less ?
1) Coaxial cables must be grounded to
a single point with a resistance to
ground of 100
Ω or less.
2) Do all nodes on the network
respond to PING correctly?
2) Inspect the coaxial cables for missing
termination resistors and damage.
3) Is the collision (COL) indicator
blinking frequently?
3) Since network loading is heavy:
• Transmission efficiency can be
degraded (TCP), and
• There is an increased possibility of
packet loss (UDP).
Therefore, the circuit usage conditions
should be reviewed.
4) Are the error counters read out from
the RAS information increasing as
time passes?
Error counters:
Alignment error, Short packet, CRC
error
4) Check whether there are any
defective (or substandard)
connections on the cables and at
the MAUs and T-connectors.
Check for the presence of noise
sources in the vicinity of the
network cables.
Verification items Resolution
To Next Page
Loading...
Need help?
General
