Symmetricom 1000, 1100 manual Clock Performance, Output Signals

Chapter 1 Overview of the TimeProvider

Clock Performance

Clock Performance

Two IOCs are available:

A Rubidium-based version that meets ST2/Type II standards. This IOC meets or exceeds the ST2 requirements in ANSI T1.101 and Telcordia GR-1244, as well as the ITU-T G.812 Type II specification.

A Quartz-based version that meets ST3E/Type I standards. This IOC meets or exceeds the ST3E requirements in ANSI T1.101 and Telcordia GR-1244, as well as the ITU-T G.812 TYPE III specification and ITU-T G.812 Type I specification.

Output Signals

The main shelf has 32 output connections arranged in four groups of eight outputs; each group is labeled A through D. The optional Expansion Panel also has four groups of eight outputs that correspond to each group in the main shelf; using the Expansion Panel, the TimeProvider supports up to 64 outputs. The outputs are “universal:” you can select from E1, 2.048 MHz, T1, 8 kHz, CC, JCC, JCC4, 1.544 MHz, and 6.312 MHz. You can provision E1 and T1 signals with standard framing and G.703 formats. Additionally, TIA/EIA B-422 (1.544 and 2.048 MHz) output signals are available using the TIA/EIA B-422 Output module; this module can be installed only in the main shelf and cannot be installed in the Expansion panel.

The output types provisioned in each group of the Master shelf are automatically provisioned in the corresponding group of the Expansion panel and cannot be configured differently.

When you install a Retimer module or a TIA/EIA B-422 Output module in a main shelf output group, then you can provision the corresponding group in the Expansion panel to any desired output type.

The TimeProvider uses interchangeable Output modules, allowing you to select the connector and termination impedance. Output modules are available with the following connectors and output impedance:

BNC – 75 Ω

DB9 (4 connectors, 2 outputs per connector) – 120 Ω

DB9 (8 connectors, 1 output per connector) – 120 Ω

Metric (Siemens) 1.6/5.6 – 75 Ω

Metric (Siemens) 1.0/2.3 – 75 Ω

Wirewrap – 100 Ω/133Ω

BT43 – 75 Ω

TIA/EIA B-422 Wirewrap – 100 Ω (installed in main shelf only)

097-58001-02 Revision G – April 2008 TimeProvider User’s Guide 39