Synchronization Specification Overview
Mainframe N
t
start
t
phase
t
trigger
t
stop
Trigger origin
Transferred Trigger
Transferred Trigger
Mainframe1
Mainframe 2
Figure A.6:
Synchronization specification overview
Master to Slave and Slave to Slave timing
t
phase
(1)
t
start
(2)
t
stop
(3)
t
trigger
(4) (5)
Synchronization source
Master/Slave
≤ 150 ns
≤ cable delay
≤ 1 s
≤ 150 ns
PTP
≤ 150 ns
≤ 1 s
≤ 1 s
≤ (516 μs + cable
delays)
GPS
≤ 1 µs
≤ 1 s
≤ 1 s
≤ (516 μs + cable
delays)
IRIG
≤ (10 μs + cable
delays)
≤ 1 s
≤ 1 s
≤ (516 μs + cable
delays)
No synchronization source
Mainframes connected by Perception
simultaneously
≤ 1 s
≤ 1 s
≤ 1 s
≤ 1 s
Additional error after connection
≤ 0.5 s/hour
≤ 0.5 s/hour
≤ 0.5 s/hour
≤ 0.5 s/hour
(1)
t
phase
Maximum phase difference between signals.
(This specification is not affected by any of the other specifications).
(2)
t
start
Maximum delay between the start of recording for each mainframe.
(3)
t
stop
Maximum delay between the stop of recording for each mainframe.
(4)
t
trigger
Maximum delay to transfer a trigger from one mainframe to all other mainframes.
(5)
Note
on trigger exchange
Trigger exchange is included in the Master/Slave synchronization cable. All other synchronization modes require that the mainframes
are connected from each External Trigger Out to each External Trigger In on all the mainframes in order to exchange triggers.
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I3763-3.1 en HBM: public