ADCP-80-353 • Issue 2 • August 2002 • Section 1: Description
Page 1-9
©
2002, ADC Telecommunications, Inc.
4.2
DSX-4U Chassis
The
DSX-4U chassis, as shown in
,
provides the mounting for up to 24 circuit
modules.
It is 15.2 cm (6 inches) high, 48.26 cm (19 inches) wide and is designed for
installation
in bays with mounting holes spaced at 2.54 cm (1.0 inch).
Figure 1-6. DSX-4U Chassis
White
adhesive-backed designation labels are shipped with the chassis for application at the
user’s
site. These labels may be pre-printed to customer request or they may be blank to allow
designations
to be added during installation.
4.3
Fuse Panel
The
fuse panel, as shown in
provides –48 Vdc power protection for all cross-connect
system
tracer lamp LED circuitry in the bay. Power for each DSX-4U chassis is supplied
through
a separate 0.5 Amp fuse. (Each LED draws 0.01 Amp, 24 LEDs in a chassis, equates to
a
0.24 Amp load.) The GMT fuse has a colored tab which is displayed when the fuse is blown.
The
fuse panel also has a LED indicator which lights whenever any fuse on the panel is blown.
The
fuse panel may also be connected to an external alarm system.
Figure 1-7. Fuse Panel
8639-A
FRONT VIEW
USE
3 AMP
FUSE
MAXIMUM
50 AMP
MAXIMUM
TOTAL BUSS
AMPERAGE
BLOWN FUSE
INDICATOR
4
8
12
16
2389-B
REAR VIEW
REMOTE ALARMS
NEG (-)
POS (+)
1-10
11-20
1-10
11-20
–
48V
ONLY
NEG (–)
BUS
POS (+)
BUS
GND
A
B
C
D
E
F
1 2 3 4 5 6 7 8 9 10
