Velleman VTLAN7, Руководство пользователя

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VTLAN7
V. 01 – 30/10/2013 7 ©Velleman nv
Crossed connections
Visible LEDs Beeps Note
•
NON-PARALLEL
•
All numbered LEDS
2 beeps
•
Cables are crossed.
•
The numbered LEDs
indicate connections but
do not indicate the
location of the cross.
No connection
Visible LEDs Beeps Note
NO CONNECTION 1 beep
•
There is no cable
between the remote
and the main unit.
•
The cable has no intact
conductors.
5.4 Test ing an RJ 11 cable
Testing RJ11 cables is similar to RJ45 cables.
An RJ11 cable can have 2, 4, or 6 connections.
Depending on the number of connections, the LEDs will light as
follows (provided the cable is OK):
•
2 connections: LED 3 - 4
•
4 connections: LED 2 - 3 - 4 - 5
•
6 connections: LED 1 - 2 - 3 - 4 - 5 - 6.
5.5 Test ing a coaxial cable (B NC)
The device can test 25 Ω, 50 Ω, and 75 Ω cables.
1. Connect one end of the cable to the BNC connector.
2. Attach a suitable terminator to the other end of the cable.
3. Press the Test button.
The LED corresponding to the error lights up.
Results
•
SHORT: short circuit
•
CONNECTED: cable is OK.
•
NON-PARALLEL: crossed connection.
•
NO CONNECTION: cable has no terminator or is defective.