6
TimeSource 3100 225
Specifications
097-72020-01 Issue 9: November 2003
2
5
3
SSSSSSSSS SSS SSSS S SSSSS SSSSSSS S SSS SSSSS
S
Simple Network Time Protocol
Protocol Type: SNTP (Simple Network Time Protocol) compliant
with RFC-1769 for unicast applications
SNTP Accuracy: SNTP timestamp derived from UTC time via
integrated GPS receiver within –300 µs
SNTP Alarm Indications: 1. SNTP packet will indicate Stratum 2 in NTP packet
header if GPS is out of lock.
2. The “ref id” field changes from GPS to at Stratum 1
to the IP address at Stratum 2 to signify that the
reference is the TimeSource clock itself.
3. SNTP packet will indicate “clock not synchronized”
in LI field as a “3” value after user defined alarm
integration time.
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