Symmetricom SSU-2000 User Manual

SSU-2000 Shelf Specifications
444 SSU-2000 User’s Guide 12713020-002-2 Revision D – April 2004
Number of Outputs 20 per module
Termination Impedance 120 Ω ± 5%
Composite Clock Signals (64 kbit/s)
Signal Waveshape
Duty Cycle
Rise Time
Pulse Width
Pulse Interval
Amplitude
Termination Impedance
Rectangular (62.5% or 50/50 duty cycle), software selectable, per
G.703 Sec. 4 and GR-378
5/8 (62.5%) 50/50
< 500 nsec < 500 nsec
9.8 µS
±5% 7.8125 µS ±5%
15.625 µS
±5% 15.625 µS ±5%
2.7 to 5.5 V peak 1.0
±0.1 V
133 Ω
±5% 110 Ω
Number of Outputs 20 per module
2048 kHz Clock Signals
Signal Waveshape
Rise Time
Fall Time
Duty Cycle
Per ITU Rec. G.703 Sec. 13
Square wave
< 50 nsec
< 50 nsec
50%
±5%
Amplitude 1.0 to 1.9 volts peak into 120 Ω
.75 to 1.5 volts peak into 75 Ω
Jitter < 0.03 UI
Number of Outputs 20 per module
Termination Impedance 120 Ω ± 5% or 75Ω ± 5%
Table F-6. Output Signal Specifications (Continued)
Parameter Specification

Symmetricom SSU-2000 Specifications

General

Brand	Symmetricom
Model	SSU-2000
Category	Power Supply
Language	English