Menu Bar SensorPlot™ Specifications


[ SensorPlot Overview ]  [ Typical Applications ]  [ SensorPlot Specifications ]
[ Hardware/Software Overview ]  [ Basic Measurements ]  [ Software Download ]

SensorPlot™ consists of:

  1. Computer - Pentium® computer running Windows® 95/98 (typically user supplied)
  2. 1 or more data acquisition cards
  3. Capture and Analysis software - Windows® that provides an instrument like user interface to the measurement and analysis tools

Software Specifications

Standard Measurements
Standard Measurements
- angular/linear position, velocity and acceleration
- analog voltage
- user defined measurements can be created by combining standard measurements, constants, operators and functions in user specified equations.

Equation-Based Measurements
Equation-based measurements are constructed using an equation editor that assists in combining basic system inputs (identified by user assigned names) with an extensive list of mathematical operations. Measurements are added to one or more displays for viewing. Real-time Math is used to evaluate equations as data is acquired and display the results in real-time. Equations can reference the results of other equations as a means of reducing mathematical complexity and computational cost. The number of equations evaluated by the SensorPlot™ is limited only by the amount of memory available in the computer.

Operators and Functions
- Standard math operators: addition, multiplication...
- Multi-frame functions
- Statistical and logical operators
- Complex arithmetic
- Integration, differentiation
- Spectral analysis functions
- Special functions: crop, shift...
- Filtering: moving average, moving median, tracking filters, Butterworth, Bessel, Eliptic...
Editors and Assistants
- Main equation editor
- Mini trace editor
- Spectral analysis wizard
- Filter wizard
- Generalized data fitter editor
Display Types

Displays can coexist in any number with each display presenting one or more measurements. Displays can be moved and individually resized using the mouse.

Graphical:
- Y and XY plotting versus time, sample number or versus another measurement or equation
- Single or dual Y axis
- All axis independently support auto-scaling with optional peak hold.
- 2 cursors available to each display
- Trace capture and hold
- Measurements can be duplicated, filtered, enveloped, and averaged
Spectrum:
- Similar to Graphical displays except data is plotted versus frequency, frequency number or versus another measurement or equation.
- Plots of phase and magnitude of spectral analysis functions
Numerical:
- Single numerical result of any equation in a large numerical display
Statistical:
- Tabular display of measurement statistics: current value, min, max, average, rms, peak to peak, sample count
Interactive Analysis Tools
General Data Fitter
- Fit a measurement to a list of arbitrary equations (20 independent equations max)
- Highlight of fit region, fit result, min and max residual error
- Auto creation of new measurement from fitted result
Statistics tool
- Compute statistics over a specified range
- Displays min, max, rms, standard deviation, average and peak to peak
- Highlight of min and max
Spectral Analysis Tools
- Auto range or manual analysis range selection
- Windows: Rectangular, Hanning, Hamming, BlackmanHarris, Exact Blackman, Blackman, Flat Top, BlackmanHarris 4 Term, BlackmanHarris 7 Term
- Multi-frame averaging with or w/o decay
- Single-frame averaging with or w/o segment overlap
- Auto creation of phase, magnitude, cross-power, auto-power, transfer functions and coherence measurements
Cursors
- Measurements of actual or interpolated data points
- Two per graphical/spectrum display
- Define regions of analysis
- Zooming: X-axis with autoscale Y-axis, X-axis only, Y-axis only, X and Y-axis

Hardware Specifications

Motion Sensor (quadrature signal) Inputs
  • Up to four channels per board
  • Support for both differential (RS422) and CMOS/TTL sensor outputs and signals
  • Maximum input pulse rate: 1 MPulses/Second
  • Optional 120 Ohm termination

Inputs connect to three types of sensors:

  1. sensors that produce a single pulse per incremental move
  2. sensors that produce quadrature signals (A quadrature B)
  3. step and direction signals (from stepper motor indexer/drivers)
Analog Inputs
- Maximum input voltage: +/-10V
- Single ended or differential modes (independently selected per channel)
- Input range: +/-50mV to +/-10V (independently selected per channel)
Sampling Sub-system

Users can sample based on time, position (e.g. acquire a sample every 1.2 of a rotating shaft), or external event. When sampling by time, the sampling subsystem guarantees uniform time sampling independent of CPU load (i.e. no sampling jitter).

Sampling/Acquisition Length Based On:
- Time: 1uS resolution, 1Mhz sampling rate max
- Position (resolution dependent upon motion sensor)
- External event: 1Mhz sampling rate max
- Count (length only)
Trigger System

Blocks of data can be acquired in a controlled fashion using an acquisition triggering system that allows users to trigger acquisitions based on time, position, or external event.

Manual Mode
Continuous
External
Trigger acquisitions on the rising/falling edge of an external signal applied to one of the External Trigger inputs.
Advanced
Acquire a block of data based on:
- Time: (maximum every 7.5 days)
- Count of external events
- Count of encoder pulses (position)
Continue to acquire data based on:
- Time
- Count of external events
- Count of encoder pulses (position)
- Count of acquired blocks
External Timebase Inputs
- Support for both differential (RS422) and CMOS/TTL signals
- Optional 120 Ohm terminaion
- Maximum input pulse rate: 1 MPulses/Second
External Trigger Inputs
- CMOS/TTL signals
- Maximum input pulse rate: 1 MPulses/Second
User Supplies
5V Supply:
5V +/-5%, 2.0A (max) resettable fuse
12V Supplies:
+/-12V +/-5%, 300mA (max) resettable fuse

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