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Symmetricom XLi User Manual

Symmetricom XLi
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XLi Time & Frequency System 187
XLi-man, Issue 8, 6/17/2008, Rev. H
2
5
1
SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
E1 Telecom Interface Output (87-6000E1-6)
Introduction
The E1 Output card provides telecommunications timing signals that comply with ITU T G.703 and ITU T
G.704 standards for 16-frame Multiframe. In addition, when the clock is configured with an appropriate
high stability oscillator option, it meets the requirements of ANSI T1.101-1999 and ITU-T G.811 for
Primary Reference Clock operation.
This card occupies a single option bay. All of its output signals are balanced and provided through panel-
mounted wire wrap pins. Two sets of Form-C relay closures are also included for major and minor alarm
indications. These closures are accessible on the panel-mounted wire wrap pins.
Figure 15:Wire-wrap outputs on the E1 card
This option card operates without software configuration by the user.
Specifications
Framed All 1's E1 2048 Kb/S Outputs (Two Outputs A and B)
Major and Minor Alarm Relay Closures
Format 16 Frame Multiframe
Line code HDB3/AMI (these are the same for all 1's)
Interface Balanced, Z0=120 Ω, on wire wrap pins
Wave Shaping As per ITU-T G.703 interface at 2048 kbits/S
Format Form-C Normally Open and Normally Closed con-
tacts
Interface Wire wrap pins
Contacts Rated to 115 VAC/150 VDC at 2 A
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Symmetricom XLi Specifications

General IconGeneral
BrandSymmetricom
ModelXLi
CategoryMeasuring Instruments
LanguageEnglish

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