Acquisition Options
- VES-701 Microstar Labs
- VES-702 Oros
- VES-703 Teac
- VES-704 LDS Test and Measurement
- VES-705 Sony
- VES-706 Data Physics
- SignalCalc Ace
- SignalCalc Mobilyzer/430
- SignalCalc Abacus
- VES-707 Onosokki
- VES-708 VXI Technology
- VES-709 A&D
- VES-710 National Instruments
- PCI/PXI-4472
- PCI/PXI-4474
- VES-711 Larson Davis
- DSS Multi-channel Digital Sensing System
- VES-712 01dB (Coming Soon)
- VES-713 IOtech
- VES-714 Emerson Process Management/CSI
- RBMware Database Interface
- VES-715 SKF Condition Monitoring
- Microlog CMVA-40
- Microlog CMXA-50
With the new acquisition window options you can now connect your analyzer directly
to ME'scope to acquire ODS or Modal measurement data. Acquire time domain
or frequency domain measurements like Auto & Cross Power Spectra, ODS FRFs,
single or multiple reference FRFs, and Coherence.
This new ME'scopeVES option is designing around a "standard" ActiveX interface so
that different PC-based multi-channel acquisition hardware systems can be accessed
and controlled directly from the Acquisition window. This "virtual instrument
interface" makes it even simpler to acquire and post-process data.
Unique Capability
The Acquisition window is connected to both a Structure window (with the 3D model
of the test structure) and a Data Block window (were measurements are accumulated).
Using these three connected windows, the user can select measurement points and
directions graphically on a 3D structure model, acquire the measurements, and view
operating deflection shapes & mode shapes in animation on the model, even before
all measurements have been made. (View image below)
Even with a few measurements, the user can begin to see how a structure is deforming.
As more measurements are acquired, the shapes will gain more definition. This capability
is particularly useful for Impact testing, where user interaction with the data
acquisition and post-processing process is essential.
Measurement Sets
with this option, an entire test can be designed beforehand by defining Measurement
Sets, one or more measurements to be simultaneously acquired with the multi-channel
front end. To define a measurement set, the user graphically selects measurement
points and directions on the 3D model for the Measurement Set. Front end channel
setup parameters can also be defined for each Measurement Set.
Following the acquisition of a Measurement Set, the structure model can be immediately
animated using the measurements that have been accumulated in the connected Data
Block window. All measurement assignment to DOFs of the 3D model is done automatically.
Now, all acquisition and post-processing have been combined into a single step,
replacing the current two-step process of acquiring and importing measurements.
Measurement Repeatability
All acquisition information is saved in a separate Acquisition (.ACQ) file so that
an entire measurement process, including the use of multiple Measurement Sets, can
be repeated exactly the way it was previously done. This is particularly useful
since acquisition of a complete set of data in order to display shapes usually requires
multiple Measurement Sets, with each Measurement Set having different acquisition
front-end settings. As the Roving and Reference DOFs of cross channel measurements
become physically separated, front-end input channel ranges must be adjusted.
Impact testing (with force and exponential windowing), ambient, pure random and
sine excitation methods are supported. Periodic signal generation (burst random
& chirp), and octave band acquisition may be supported in the future using hardware
front-ends that have this capability.
Acquisition Window
The Acquisition window looks similar to the current Data Block window, but with
a panel on the right side for setting up and controlling the front-end acquisition.
The graphics area on the left contains both an upper and a lower graph.
Time domain Traces received directly from the acquisition front-end are displayed
in the upper graph of the window. Calculated measurements (FRFs, Coherences, etc.)
are displayed in the lower graph. The two graphics displays are separated by a horizontal
green splitter bar. The two graphs can be resized (one smaller and the other
larger) by dragging the horizontal bar vertically.