PTF 3207A - System Time & Frequency Accuracy

Go to Contents Precise Time and Frequency, Inc., 50L Audubon Road, Wakefield, MA 01880, USA ptf 3207A rev G
Tel: +1-781-245-9090 e-mail: info@ptfinc.com www.ptfinc.com pg. 8
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System Time & Frequency Accuracy
The tables below describe system clock accuracy while locked to the reference source indicated.
GPS Receiver Reference
1 PPS Output: UTC(USNO) 20 nS RMS, 100 nS peak
Frequency Output Accuracy: <1 x 10-12 @ 1 day
Frequency/Timing,
Allan Deviation, Stability
1 second 5 x 10
-11
10 seconds 1 x 10
-11
100 seconds 2 x 10
-11
1000 seconds 5 x 10
-12
10000 seconds 7 x 10
-13
IRIG B (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
Time Code Input Reference
1 PPS Output: 10 µS to the incoming code, IRIG B (am)
10 nS to the incoming code, IRIG B (DCLS)
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 IRIG B 120 (am)
Time Code Output: 10 µS to the incoming code
Accuracy of IRIG B 000 (DC Level Shift) 10 µS to the incoming code (IRIG B am)
Code Output: 10 nS to the incoming code (IRIG B DCLS)