System
Interface
280 A0534-30.0 HBM: public MGCplus
If two or more PCs are to be used with an MGCplus it is essential for
"MultiClient" to be activated.
While the measured values of one client are being recorded, none of the
other clients can make changes to the recording of measured data. External
clients can only reset the time channel. All the other measured data
recording parameters, such as sampling rate groups, triggers, channel
selection, etc., are divided between the client processes.
Notice
But every client can effect changes in the parameterization of every
amplifier. For example, should a client change the zero offset or the filter
setting of an amplifier, this will immediately have repercussions for the
recorded data of another client process. In this case, the recorded
measurement traceability information will not match the effective amplifier
parameters.
What constraints are there to consider?
The number of measured values that can be generated in an MGCplus is
limited to 307,200 per second (16 modules at a maximum of 19,200
measured values per second).
Each module in the MGCplus system can transmit no more than 19,200
measured values per second to the external interfaces. If one client request
net values, for example, and another gross values, this may cause "link
resource conflicts", which can be cleared by HBM software. Other
manufacturers' software can perhaps not resolve these "link resource
conflicts" automatically.
The communication processor has an internal ring buffer where measured
values can be stored temporarily if external users delay collection. In
multi-client mode, the various external clients must share this internal buffer.
HBM catman software (catman Easy/AP and catman enterprise) can be
used to view utilization of the buffer and data acquisition performance.
It is not possible to specify absolute rates for measured value transmission
over the individual system interfaces, as external influences (PC and
software performance) must be taken into account.
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