Physical Description - ADC DSX-3 Installation Manual

ADCP-80-353 • Issue 2 • August 2002 • Section 1: Description
In addition, patch cables can be used to split cross-connected equipment units, and connect
either of the two units to a third unit. In
equipment C.
As seen in
which are established permanently or temporarily at the centrally located cross-connect system.

4 PHYSICAL DESCRIPTION

Front and rear views of a typical fully configured DSX-3 (DSX-4U-24) Rear Cross-Connect
System bay are shown in
chassis, each capable of holding up to 24 DSX-4U circuit modules. A fuse panel located near
the top of the bay supplies power to each chassis. Provision for an AC outlet is located at the
bottom of the bay. Rings and brackets at the back of the bay allow for routing and securing
equipment in/out cables and cross-connect jumpers.
Equipment and cross-connect cabling to the cross-connect system bay is by means of BNC
coaxial connectors located on the back of the circuit module. Each circuit module also has
midsize coaxial jacks on the front for patching and monitoring.
Page 1-4
© 2002, ADC Telecommunications, Inc.
Figure 1-2, numerous testing and patch-around configurations are possible, all of
LAMP
SWITCH
GND
TL
–48V
OUT
EQPT
A
IN
LAMP
SWITCH
GND
TL
–48V
OUT
EQPT
C
IN
Figure 1-2. Typical DSX-3 (DSX-4U-24) Circuit Arrangement
Figure 1-3
Figure 1-2, equipment B is temporarily patched to
X-O/
X-O/
X-I X-I
MESSENGER
CORD
TL
PERMANENT
CROSS-CONNECT
CABLES
X-IN X-IN
X-OUT X-OUT
MON MON
OUT OUT
IN
IN
X-IN
X-OUT
MON
OUT
IN
and Figure 1-4. The bay is comprised of up to ten module
LAMP
SWITCH
GND
–48V
OUT
EQPT
B
IN
=EQUIPMENT IN OUT CONNECTOR
= CROSS-CONNECT CONNECTOR
= PATCH JACK
= PIN JACK
1267-C