Symmetricom XLi User Manual

6 XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
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System Time & Frequency Accuracy
The tables below describe system clock accuracy while locked to the reference source indicated.
GPS Receiver
See GPS Signal Strength Requirements (page 21), and GPS C/A Receiver (87-8028-2) (page 191).
Time Code Input
See “F110 – J1 Input (Time Code, TIET)” on page 137.
1 PPS Output: UTC(USNO) 30 nS RMS, 100 nS peak
Frequency Output Accuracy:
<1 x 10
-12
@ 1 day
Frequency/Timing, Allan
Deviation, Stability (with
TCXO):
1 x 10
-9
@ 1 sec
3 x 10
-10
@ 10 sec
3 x 10
-10
@ 100 sec
2 x 10
-10
@ 1000 sec
1 x 10
-12
@ 1 day
AM Code Output Accuracy: 10 μS to the 1 PPS output
DC Level Shift Code Output
Accuracy:
200 nS to the 1 PPS output
Time to System Lock <20 min. typical
1 PPS Output: 10 μS to the incoming code
Frequency Output Accuracy:
1x10
-10
, referenced to 5x10
-11
carrier @ 1 day
Stability of Frequency/Timing –
Allan Deviation:
5x10
-9
@ 10 sec, referenced to 3x10
-11
@ 10 sec carrier
Accuracy of AM Code Output: 10 μS to the incoming code
Accuracy of DC Level Shift
Code Output:
10 μS to the incoming code
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Symmetricom XLi Specifications

General

Brand	Symmetricom
Model	XLi
Category	Measuring Instruments
Language	English