Symmetricom TimeHub 5500 System Manual

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097-55501-01 Issue 6 – June 2003 195
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5
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Specifications
6.1.5 Expansion Link 1 Input
Used to connect to the expansion shelf.
6.1.6 Expansion Link 2 Input
Used to connect to the expansion shelf.
6.1.7 DS1 Inputs
Connector Type: Wire-wrap pins
Connector Label: DS1 REF (T, R, S)
DS1 MON (T, R, S)
Connector Location: Input/Alarm Connector module (rear of shelf)
Number of Inputs: 4 reference inputs and/or monitoring
4 additional inputs for monitoring only
(Clocks 090-55512-02 or 090-55514-02 required)
Bit Rate: 1.544 Mb/s
Impedance: 100
Ω
Format: DS1 (Telcordia GR-499-CORE; ANSI T1.101)
Framing: D4 or ESF (selectable)
Line Code: B8ZS
SSM State: Enable
Disable
Cable Attenuation: 7.0 dB maximum
LOS Threshold: –14 dB to –10 dB (terminated) relative to
nominal 3 V amplitude
–34 dB to –30 dB (bridged) relative to
nominal 3 V amplitude

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English