HBM QuantumX MX1609, Operating Manual, Page: 18 / 181

18
Introduction
HBM QuantumX
2.5 Sychronization of QuantumX modules
To enable measurement signals to be synchronized for processing and analysis, they need
to be synchronously measured.
All QuantumX modules can be synchronized among themselves. This ensures simultaneous
measurement on all channels. All the analog-digital converter rates, measuring rates and
bridge excitation voltages are also synchronized.
Synchronization methods:
Synchronization via FireWire
All the modules are synchronized automatically when they are connected via the FireWire
cable. This is the recommended method.
No CX27 module present in the system:
The module with the highest serial number takes over the Master function.
CX27 module present in the system:
If a CX27 module is connected, this automatically becomes the synchronization Master.
When starting the system, the system time is set once to the actual time.
If only QuantumX modules are being used, internal synchronization is sufficient. However, if
synchronous measurements are to be performed by different measurement systems, an
external Master must be used for synchronization.
This is also a requirement if the QuantumX modules are a long distance away from one
another, and a FireWire connection would be too costly and complex.
Synchronization with external sources
If an external synchronization source has been adjusted, the module with the best
synchronization quality becomes the Master and synchronizes all modules connected via
FireWire.
If several external sources have been selected, the system decides based on the following
order of priority:
1 Ethercat
2 IRIG
− B
3 NTP
Synchronization via EtherCAT
The CX27 gateway supports the EtherCAT ”Distributed Clocks” enhancement. In an
EtherCAT group, the time is distributed to all the EtherCAT nodes.
The CX27 module can be synchronized to the EtherCat time. This will mean that all the
QuantumX module clocks are synchronized to the specified time.