Black Box LRU4240 manual Network Problems, Ctrl-L

Dual Trunk E1 Router

Table 11-1 Unit Problems (4 of 4)

Symptom Probable Cause Solution

Some invalid data is received mixed in with a mostly good menu display.

•Refresh screen image.

•1 or more units are missing at ID, or two units have the same ID.

•To refresh screen, press

Ctrl-L.

•Reduce the baud rate on the units and terminal if you are using the maximum (38400 baud) for communicating with a very large number of units.

•If the cable from the network to the terminal exceeds the 15 m (50 ft.) maximum, fix the length.

•Verify that none of the units are missing an ID and that no two units have the same unit ID.

NETWORK PROBLEMS

Table 11-2 Network Problems (1 of 4)

Symptom	Probable Cause	Solution
The unit experiences a loss of	• Equipment Failure	• Test E1.
signal or a loss of frame on the		• Apply hardware loop to front of
Network Port.
		unit.

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