Spectracom VersaSync User Manual page 266

APPENDIX
* When the receiver time is derived from the battery backed clock or set manually through the Setup Port
Interface.
The quality indicator (
receiver is unable to track any GNSS satellites, a timer is started. "Quality indicators" below
lists the quality indicators and the corresponding error estimates based upon the GNSS
receiver 1PPS stability, and the time elapsed tracking no satellites. The Tracking Zero Satellites
timer and the quality indicator reset when the receiver reacquires a satellite.
Table 5-3:
The leap second indicator (L) is defined as:
The Daylight Saving Time indicator (D) is defined as:
E x a m p l e :
?A15 271 12:45:36.123 S
The example data stream provides the following information:
254
) provides an inaccuracy estimate of the output data stream. When the
Q
Quality Time (hours) TXCO Error (milliseconds)
Space Lock <1
A <10 <10
B <100 <100
C <500 <500
D >500 >500
Quality indicators
(Space) When a leap second correction is not scheduled for the end of the month.
L When a leap second correction is scheduled for the end of the month.
S During periods of Standard time for the selected DST schedule.
I During the 24-hour period preceding the change into DST.
D During periods of Daylight Saving Time for the selected DST schedule.
O During the 24-hour period preceding the change out of DST.
OCXO Error Rubidium Error
(milliseconds) (microseconds)
<0.01 <0.3
<0.72 <1.8
<7.2 <18
<36 <90
>36 >90
VersaSync User Manual