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O3-4D1L3 U2
1631, Issue 4, October 2009
7. MAINTENANCE
In case of equipment malfunction, check the front-panel indicators. Reference Table 5.
Since O3-4D1L3 and O3-4D1 units are used to extend DS1 circuits, they pass on network
timing. As a result, standard T1 test sets might need to be provisioned for INTERNAL
timing rather than Loop timing, as shown in Figure 9.
If an optical connector exhibits transmission loss, clean it carefully using approved
fiber-cleaning methods and materials.
C. DS1 Interface
Line Rate
1.544 Mb/s, ± 32 ppm
Line Code
AMI or B8ZS selectable
Line Impedance
100 ohms ± 5%, balanced
Line Rate Tolerance
1.544 Mb/s, ± 130 ppm
Frame Format
SF, ESF, or unframed
Pulse Amplitude
3V ± 10%
Pulse Width
324 ns ± 30 ns
Line Build-Out
0 to 655 feet; 0, 7.5 or 15 dB
Alarm Indication Signal
All ones, no framing
D. Front-Panel Connectors
DS1
24-pin, AMP CHAMP, female screw-lock
OC3 (TX and RX)
LC
Craft Network Management Port
RS-232, DB-9, female
E. Power Requirement
Input Voltage
– 42.5 VDC to – 56.5 VDC
Nominal Current
200 mA
Nominal Power Consumption
9.6 Watts
F. Environmental
Temperature Range, Operating
– 40° to +70°C
Relative Humidity, Operating
0 to 95%, no condensation
G. Physical
Shelf Mechanics
Type 3192
Size (height x width x depth)
4.76 x 1.35 x 9.95 inches
Weight
20 ounces
Table 10. O3-4D1L3 Specifications (Continued)
Description
Specification
