Lighting Controls Blue Box LT Series User Manual

LCDBBAND04Sept08
LIGHTING CONTROL & DESIGN
905 Allen Ave • Glendale, CA 91201 • Support 800-345-4448 • www.lightingcontrols.com
HARDWARE ACTIvATION TROUBLESHOOTING
(Continued)
Bus Checker Card Data/Power Jumper
Bus Checker CardData/Power Jumper
Bus Checker Card Data/Power Jumper
BUS SPLITTING TECHNIqUE
!
Note:To speed up troubleshooting when readings are
less than 200Ω on the Continuity or Short-Circuit test,
refer to the “Bus Length Chart” earlier in this document
before splitting the bus; this can provide an approximate
distance to a shorted pair or extra terminator from the
test point.
On the middle device of the bus, disconnect one Cat. 1.
5 cable to create two smaller “half-buses”.
Test each “half-bus” to find the side with the out-of-2.
range values.
Repeat steps 1 & 2 on the out-of-range “half-bus,” 3.
to create another “half-bus” until the cable, crimp or
device creating the out of range measurements is lo-
cated.
The idea is to split a bus in half and then half again – over and
over until the bad area has been located. It is OK to visually
inspect each cable, crimp or device to detect the problem.

Lighting Controls Blue Box LT Series Specifications

General

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