210 XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
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1
TIME QUALITY INDICATORS
PTTI 10V 1PPS and 1PPM Output
1PPS TIME ROLLOVER PULSE:
Amplitude : 10Vdc, ±1V into
50 Ω
Pulse Width: 20uSec ± 1uSec
Rise Time: <20nSec
Fall Time: <1uSec
Phasing: In phase with the XLi 1PPS ± 100ns Qty:2
Connector: BNC female
1PPM TIME SYNCHRONIZATION SIGNAL:
Table 11:
TFOM
Number
XLi Estimated Time Error (ETE)
1111 Not Used
1011 Not Used
1010 Not Used
1001 Initial condition clock unlocked or 10mSec < ETE
1000 Clock unlocked and 1mSec < ETE <= 10mSec
0111 Clock unlocked and 100uSec < ETE <= 1mSec
0110 Clock unlocked and 10uSec < ETE <= 100uSec
0101 Clock unlocked and 1uSec < ETE <= 10uSec
0100 Clock unlocked and 100nSec < ETE <= 1uSec
0011 Clock unlocked and 10nSec < ETE <= 100nSec
0010 Clock unlocked and 1nSec < ETE <= 10nSec
0001 Clock Locked to a reference source
0000 Not Used
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