30
UTP AND THIN ETHERNET REPEATERS
Cause
: 2. The wires are shorted at a point more than 100 feet (30.5 m)
from either repeater.
Action
: 2. Check the LED on the other repeater. If it is red, unplug the
phone wire and using an ohmmeter, check for a short and repair as
necessary.
Symptom
: The Repeater LEDs flash red and green but no data passes
through the line.
Cause
: 1. There is a Bridge tap.
Action
: 1. Make certain the run extends between two end points only and
does not branch off to a third point.
Cause
: 2. The connection (or part of it) was made with shielded twisted
pair.
Action
: 2. Reconnect the units using unshielded twisted pair.
Cause
: 3. The connection (or part of it) was made with silver-satin cable.
Action
: 3. Make sure no silver-satin patch cables are used. Reconnect the
units with unshielded twisted pair.
Cause
: 4. Voice-rated (not data-rated) protection devices have been used.
Action
: 4. Only data-rated surge-protection devices will work properly.
Voice-rated devices typically load the lines preventing high-speed data
transmission. Replace any voice-grade surge protectors with data-rated
devices.
Cause
: 5. The distance of the run exceeds the product specifications.
Action
: 5. Break the run into two runs, or reroute the run to a distance
within the 1500 ft. (457.2 m) maximum specification.
Symptom
: A repeater port connected to another repeater has its green
LED on, but there is no communication between the repeaters.
Cause
: 1. The wires are crossed.
Action
: 1. Check the LED on the other repeater. If it is green, unplug the
phone wire at one repeater and reverse the crossed wires.
5.3 Hints and Tips
The following information will help you avoid problems with your Long
Summary of Contents for LZ1500A-R3
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