Lighting Controls Blue Box LT Series User Manual

THE BLUE BOX LT MAKING UP CAT. 5 CABLE WITH RJ45 CONNECTORS 37
LCDBBMUCAT03Sept08
MISCELLANEOUS INFORMATION
Our cables are made up as “Straight Through” cables. The
connectors at each end look identical. Notice that the
green pair straddles the blue while the orange and brown
take up the edges.
Never ever have a mixed pair on pins (4) and (5). Such as
Blue on (4) and White Green on (5). This will cause major
data loss. It is hard to find since the cable tester will tell
you that the cable is OK.
An additional comment on cable testers. They only tell
you if the wires have continuity from one end of the cable
to the other and that they are in the same order at each
end. They do not tell you if you have good crimps or if
your cables will work. The cables are part of the GR 2400
system. They are the part of the system that is manufac-
tured in the field. Thus LC&D has the least amount of
control over it. We have had cables that were tested with
high end, high frequency equipment that pass individually
but when plugged in end to end, the system did not work.
visual inspection of each crimp however showed bowed
crimps. When corrected the system was fine.
CABLE kINkS
Cable kinks cause loss of data! Cat. 5 specifications say a
cable must have a radius of 1" going round a corner. Wires
that have been tightened up and then straightened out
cause data loss on our bus. If an electrician pulls a kink it
must be cut out and the wires pulled again.
DIRTY Rj45 SOCkETS
A panel can be installed and sit in a dusty electrical room
for days or months while the building is being readied. In this
way the sockets can get dirty. The grit inside the socket can
prevent a proper electri-
cal connection. It may
allow some contact but
eventually this connection
can cause problems.
Be aware of this and make
sure that the socket plugs
provided are replaced if a
cable is removed.
Additionally one can push the RJ45 connector into the
socket upside down; this causes the gold plated spring
contacts to be deformed. The only solution in this case is
to replace the entire card.
White/Orange
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown
White/Orange
Orange
White/Blue
Blue
White/Green
Green
White/Brown
Brown

Lighting Controls Blue Box LT Series Specifications

General

Brand	Lighting Controls
Model	Blue Box LT Series
Category	Controller
Language	English