Acquisition System
System Time Base and Synchronization
Central time base for all acquisition cards
Accuracy
±
3.5 ppm; aging after 10 years
±
10 ppm
Base
Binary, Decimal or External
Synchronization sources
IEEE1588:2008 PTP V2 (Precision Time Protocol) using a Two
-
Step master, End
-
to
-
End
protocol
Master/Slave synchronization; Slave or Master mode on built
-
in connector
Master output card (G083): Option to synchronize up to 16 Slave systems
IRIG (G001/G002): Option to synchronize IRIG A & B time sources
GPS (G002): Option to synchronize GPS satellite time
PTP synchronization accuracy
±
150 ns; no Ethernet switch used
Use only End
-
to
-
End, Two
-
Step master PTP aware switches. The accuracy depends on
which switch is used.
Acquisition Slots
Unused slots must be covered using the GEN DAQ blind panel. This closes the mainframe front panels for EMC/EMI and safety compliance
and also regulates the internal airflow to cool the acquisition system correctly.
Maximum slots
3
Acquisition cards
Any combination of GEN DAQ acquisition cards
Digital Event/Timer/Counter connector
1; Connected to slots A and B
Thermal control
Every acquisition card and the acquisition system monitors its own temperature and status.
This is used to regulate fan speeds and reduce noise while optimizing airflow and power
consumption.
Calibration
Any changes to the acquisition system configuration may change its internal thermal
gradients. As accurate calibration relies on a steady and repeatable thermal environment,
calibration is void if changes are made in the configuration. For information on calibration
impact, please refer to the individual card specifications.
GEN3i
I3763-3.1 en HBM: public
367
