Power Input Specifications; Input Signal Specifications; Power Input And Grounding Specifications - Symmetricom SSU-2000 User Manual

SSU-2000 Shelf Specifications

Power Input and Grounding Specifications

Table F-4 provides power input specifications.
Table F-4. Power Input Specifications
Parameter
Supply power
Power, maximum
Power, typical
Connector
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.

Input Signal Specifications

Table F-5 details the input signal specifications.
Table F-5. Input Signal Specifications
Parameter
Framing
Bit Rate
Format
Amplitude Range
Jitter and Wander Tolerance
Input Error Threshold
Input Impedance
Type
Bit Rate
Format
Amplitude Range
442 SSU-2000 User's Guide
–38 to –72.2 Vdc (–48 Vdc nominal)
< 240 watts at power on
< 100 watts at normal operation
#6 Ring Terminal Block
DS1 Signals
D4/SF or ESF (User Selectable)
1544 kbit/s
AMI or B8ZS (per (ANSI) T1.102 & ITU-T G.703 Sec. 5)
+3 to –24 dBDSX
Meets the requirements of Bellcore GR-1244-CORE, Section 4.
0 to 255 Intervals per hour (AIS, LOS, OOF, BPV, CRC)
3.3 kΩ (External termination)
E1 Signals
G.703 Sec. 9 Framed E1
2048 kbit/s
CAS or CCS (per ITU-TG.703 Sec. 2 & (ANSI) T1.102 DS1A CRC4
enabled/disabled AMI or HDB3)
+3 to –27 dBTLO
Specification
1, 2, 3
Specification
12713020-002-2 Revision D – April 2004