Chapter 9 Specifications
SSU-2000e Shelf Specifications
328
SSU-2000e Technical Reference
12713140-003-2 Revision E.01 – January 2007
Power Input and Grounding Specifications
provides power input specifications.
Input Signal Specifications
details the input signal specifications.
Table 9-4. Power Input Specifications
Parameter
Specification
Supply power
–38 to –72.5 VDC (–48 VDC nominal)
1, 2, 3
Power, maximum
< 240 watts at power on
Power, typical
< 100 watts at normal operation
Connector
#6 Ring Terminal Block
1. Reversing the input polarity does not damage the unit.
2. Isolated power inputs are user-settable for positive or negative grounding schemes.
3. The 48 VDC return is connected to the common ground plane at power source.
Table 9-5. Input Signal Specifications
Parameter
Specification
DS1 Signals
Framing
D4/SF or ESF (User Selectable)
Bit Rate
1544 kbit/s
Format
AMI or B8ZS (per (ANSI) T1.102 & ITU-T G.703 Sec. 5)
Amplitude Range
+3 to –24 dBDSX
Jitter and Wander Tolerance
Meets the requirements of Bellcore GR-1244-CORE, Section 4.
Input Error Threshold
0 to 255 Intervals per hour (AIS, LOS, OOF, BPV, CRC)
Input Impedance
3.3 k
Ω
(External termination)
E1 Signals
Type
G.703 Sec. 9 Framed E1
Bit Rate
2048 kbit/s
Format
CAS or CCS (per ITU-TG.703 Sec. 2 & (ANSI) T1.102 DS1A CRC4
enabled/disabled AMI or HDB3)
Amplitude Range
+3 to –27 dBTLO