Section IV. Learning the Main Unit's Faceplate
The TVR1000 Main Unit can be connected to a
single port
of any
10, 100 or 1000 Base-T device and it can be inserted
inline
between
any two LAN devices without disrupting LAN communications.
The Main Unit performs the bulk of the tests. The Remote Probe
(detailed later in this manual) adds the ability to trace cable loca-
tions and determine the pairs configuration of a cable. It is used with
the Main Unit to perform its operations.
The Main Unit performs a self-test each time it is powered ON (this
is indicated by a series of flashing LEDs). If the TVR1000 passes
the test, all LEDs will be left OFF, except the power ON LED. If the
unit continues to self-test or the red power LED is dim, it is time to
replace the 9V battery.
1) Display the speed and duplex. If a device is capable of 10,100
and 1000 all 3 speed LED(s) will light. Color indicates duplex.
2) Verify if a device is wired as a hub, switch or PC and indicate if
Data and/or Link pulses are present.
3) Make an
inline
connection between two devices to determine the
negotiated speed and duplex of the link and test the need for a
straight thru or crossover cable. The
inline
mode does not disrupt
10
communications, so the TVR1000 can be used to continuously
monitor the link for data and link activity plus speed and duplex.
These jacks and associated LEDs are the heart of the Main Unit’s
ability to save you time with your LAN tasks.
GREEN JACK (
Single port
and
Inline
tests):
The most used jack
of the three is the “Green jack” (named by its green border). All three
jacks will verify the device type (hub/switch, PC), the presence of
Data and Link pulses and Speed/Duplex, but the Green jack is used
most often because it is a “straight thru” connection to the tester’s
circuitry making it the best choice for "single port" tests. If a device is
plugged into the Green jack using a straight thru cable, the LEDs will
indicate the device correctly because of the straight thru connection.
MIDDLE JACK (
Inline
tests):
The middle jack is also connected
straight thru to the tester
. Using the Middle Jack and the Green
jack
inline
between two devices creates a straight thru connection.
RIGHT SIDE JACK (
Inline
tests)
: The jack to the far right is con-
nected to the tester by a crossover connection. Using the Right
Side Jack and the Green jack
inline
between two devices creates a
crossover connection between the two devices.
All three jacks 1) provide input to the Data, Link, Speed and Duplex
LEDs and 2) simulate both straight thru (=) and crossover (X)
connections(allowing you to determine which style patch cable is
required to make a connection between the two LAN devices).
When performing inline tests, first power ON the tester, then allow 3
seconds between plugging in devices (the time it takes the TVR1000
to make a reading).
11
Understanding the use of the
10/100/1000 LAN Test’s
three RJ45 jacks.
Power “ON/OFF” and self-test
Turns all Main Unit power ON or OFF.
10/100/1000 LAN TESTS Jacks
The Main Unit's upper RJ45 jacks per-
form the following tests (details of the
tests follow later in this section)
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