Name: Symmetricom XLi
Brand: Symmetricom
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XLi Time & Frequency System 3

XLi-man, Issue 8, 6/17/2008, Rev. H

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Clock Architecture

The following figures provide a simplified view of the XLi’s clock architecture.

Figure 1: Functional Timing Block Diagram

Aux Ref - 1/5/10 MHz

Rate Generation

Code Generation

Clock Machine

Phase Compare

200 MHz PLL

10 MHz Osc.

DAC

DAC Select

Clock DPLL

Phase Measurement

16.384 MHz Osc. PLL

1 PPS Timing Select

Time and Clock

Recovery

Code Input

1 PPS Output

Code Output

Rate Output

Aux Ref

1 PPS A

1 PPS B

Code Input

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Symmetricom XLi Specifications

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