MULTISYNC 100 GPS CLOCK – INSTRUCTION MANUAL
v
MultiSync 100 GPS Clock
Table of contents
General safety precautions.......................................................................................... ii
Safety words and definitions.......................................................................................iii
For further assistance ..................................................................................................iii
1 PRODUCT
DESCRIPTION
Product description........................................................................................................1
Features..............................................................................................................................................................1
Order codes .....................................................................................................................2
Specifications..................................................................................................................2
Accuracy.............................................................................................................................................................2
Electrical .............................................................................................................................................................2
Output options.................................................................................................................................................3
Networking........................................................................................................................................................3
Environmental specifications ...................................................................................................................3
Mechanical specifications..........................................................................................................................4
Antenna requirements.................................................................................................................................4
Testing and certification .............................................................................................................................5
2 THEORY OF
OPERATION
GPS and precise time synchronization.......................................................................7
The IRIG-B Time Code Standard...................................................................................8
Modulated IRIG-B ...........................................................................................................................................9
Unmodulated IRIG-B .....................................................................................................................................9
IEEE-1344 Extensions ................................................................................................................................10
Defining IRIG-B Time Codes....................................................................................................................10
IRIG-B in the MultiSync 100 1588 GPS Clock ..................................................................................11
IRIG-B wiring considerations..................................................................................................................12
Network Time Protocol / Simple Network Time Protocol..........................................................12
SNTP...................................................................................................................................................................12
NTP/SNTP in the MultiSync 100.............................................................................................................13
IEEE 1588 / PTP / C37.238............................................................................................13
Message-Based Synchronization ........................................................................................................13
Components of a 1588 Network..........................................................................................................14
C37.238 ............................................................................................................................................................16
1588 and C37.238 in the MultiSync 100 ...........................................................................................16