Symmetricom TimeSource 3100 User Guide

097-72020-01 Revision K – December 2005 TimeSource 3100 User’s Guide 193
Chapter 6 Specifications
Simple Network Time Protocol
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.
Password Activated:Contact factory
Power
Connector Type: Terminal block
Connector Labels: TB1
TB2
Voltage: –40 V dc to –60 V dc (A & B feed)
Current: 750 mA maximum
Steady-state power:30 W maximum
Recommended Fuse for
Battery Feed: 3 A

Symmetricom TimeSource 3100 Specifications

General

Brand	Symmetricom
Model	TimeSource 3100
Category	GPS
Language	English