Symmetricom SSU-2000 User Manual

12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 443
SSU-2000 Shelf Specifications
Output Signal Specifications
Table G-6 details the input signal specifications.
Jitter and Wander
Tolerance
Meets the requirements of ITU-T G.823
Input Error Threshold 0 to 255 Intervals per hour (AIS, LOS, LOF, BPV, CRC)
Type G.703 Sec. 9 Framed E1
Input Termination External
Table F-6. Output Signal Specifications
Parameter Specification
DS1 Signals
Framing (user selectable) Outputs: D4/Super Frame (SF) or Extended Super Frame (ESF)
Signal Waveshape
Rise Time
Pulse Width
Pulse Interval
Duty Cycle
Framed, all ones, Alternate Mark Inversion (AMI) per (ANSI) T1.102
and ITU Rec. G.703
< 100 nsec
< 324 nsec, nominal
648 nsec, nominal
50%
Pulse Amplitude 2.4 to 3.6 volts peak into 100 Ω
Output Jitter < 0.03 UI
Number of Outputs 20 per module
Termination Impedance 100 Ω ± 5%
E1 Signals
Framing (user selectable) CAS, CCS
Signal Waveshape
Rise Time
Pulse Width
Pulse Interval
Duty Cycle
Framed, all ones, Alternate Mark Inversion (AMI)
Per ITU Rec. G.703 Sec. 9
< 100 nsec
< 244 nsec, nominal
488 nsec, nominal
50%
Pulse Amplitude 2.4 to 3.6 volts peak into 120 Ω
1.9 to 2.8 volts peak into 75 Ω
Output Jitter < 0.03 UI
Table F-5. Input Signal Specifications (Continued)
Parameter Specification

Symmetricom SSU-2000 Specifications

General

Brand	Symmetricom
Model	SSU-2000
Category	Power Supply
Language	English