ADC DSX-4U-24, Руководство по установке

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ADCP-80-353 • Issue 2 • August 2002 • Section 1: Description
Page 1-8
©
2002, ADC Telecommunications, Inc.
Table 1-1. DSX-3 (DSX-4U-24) Circuit Module Components
NAME TYPE LOCATION FUNCTION
Tracer
Lamp (TL)
Red
LED Indicator
Front Used
to identify the opposite end of a
cross-connect.
The tracer lamp flashes
for
approximately 30 seconds whenever
the
tracer lamp switch is pulled out, and
remains
lit while the tracer lamp switch
is
left pulled out. If the module is cross-
connected
to another module, the tracer
lamp
on that module will also flash
approximately
30 seconds and then
remain
lit.
Lamp
Switch (LS)
Push/Pull
Switch
Front Provides
bridged access to the output
signal
of connected office equipment to
allow
monitoring without interruption.
MON
(Monitor)
Midsize
Coaxial Jack
Front Provides
bridged access to the output
signal
of connected office equipment to
allow
monitoring without interruption.
OUT Midsize
Switching
Coaxial
Jack
Front Provides
test or patch access to digital
equipment
output terminations. Any
cross-connect
to the X-O jack is disabled
and
terminated to 75 ohm ground when-
ever
a plug is in the OUT jack.
IN Midsize
Switching
Coaxial
Jack
Front Provides
test or patch access to digital
equipment
input terminations. Any cross-
connect
to the X-I jack is disabled and
terminated
to 75 ohm ground whenever
a
plug is in the IN jack.
XO
and XI
BNC
Connector
Rear Provides
direct access to the digital
equipment
output (XO) or input (XI)
termination
for cross-connecting to any
digital
equipment output or input
termination
via the cross-connect system.
O
and I
BNC
Connector
Bottom
Rear
Provides
for connection from the digital
equipment
output (O) or input (I) termi-
nation.
(Not
marked)
Pin
Jacks
Top
Rear
Provides
for interconnecting of the tracer
lamps
for the corresponding cross-con-
nects
to allow tracer lamp operation as
described
above. The connections
between
the circuit modules should cor-
respond
exactly to the XO or XI cross
connect
jumpers. Cross-connect jumpers
are
available with messenger cords which
accommodate
both the cross-connect and
the
corresponding lamp connection.