ADC DSX-4U-24, Руководство по установке

Страница: 17 / 34

ADCP-80-353 • Issue 2 • August 2002 • Section 1: Description
Page 1-10
©
2002, ADC Telecommunications, Inc.
4.4 Cable Rings and Troughs
Vertical
cable rings at the rear of the bay allow for routing of cross-connect jumpers up and
down
each side of the bay. Cable troughs at the top and bottom of the bay provide for the
routing
of cross-connect jumpers between bays.
4.5 Cable Brackets
The
cables are brought in at the sides of the bay and tied to the cable brackets.
4.6 Cross-Connect System
The
cross-connect system bay is an unequal flange type, 213 × 65.88 × 30.48 cm (84 × 25.94 × 12
inches).
Shelf mounting holes are spaced at 2.54 cm (1 inch). An AC outlet may be provided at
the
bottom front of the bay as an auxiliary source of 110 Vac primary power.
5 SYSTEM SPECIFICATIONS
Specifications
for the DSX-3 (DSX-4U-24) Rear Cross-Connect System are shown in
Table 1-2 .
Table 1-2. System Specifications
PARAMETER SPECIFICATION
Physical
Height:
2.13
m (7.0 feet)
Width:
55.72
cm (21.94 inches)
Depth:
30.48
cm (12 inches)
Weight:
163
kg (360 pounds) (fully equipped)
Power
Voltage:
–48
Vdc
Current:
10
mA for each lit LED tracer lamp
Environmental
Operating Temperature:
–40
° to 65 ° C (–40 ° to +149 ° F)
Storage Temperature:
–55
° to +85 ° C (–67 ° to +185 ° F)
Operating and Storage Humidity: 0% to 95% without condensation
Functional
Characteristic Impedance:
75
ohms unbalanced.
Insertion Loss:
Less
than 0.8 dB at 22.368 mHz and less than 1.9 dB at
137.088
mHz with up to 27 feet (8.23 m) of cross-connect cable.
Crosstalk:
Better
than 60 dB.
Return Loss:
Greater
than 20 dB (DC to 300 mHz).
Monitor Level:
21.5
dB ±1.5 dB below signal level (DC to 300 mHz).