PC/ANALYSIS™
Data Acquisition and Analysis for the Vibration
and NVH Laboratory
- FFT, Swept Sine and Shock SRS included.
- Fast computational and real-time speed without
costly DSP boards!
- High density grid plotting yields quality
presentation!
- Achieve high performance without UNIX!
Standard Windows NT PC hardware reduces training/maintenance costs.
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HARDWARE
SPECIFICATIONS |
SOFTWARE SPECIFICATIONS |
PC/ANALYSIS Systems are based on standard PC
computers with Windows NT without costly and proprietary DSP cards and hardware
architectures. With specialized PC/ANALYSIS algorithms, layers of standard
PC inefficiency have been improved for the throughput/compute needs of the dynamics test
laboratory. PC/ANALYSIS Systems are designed for the test lab high
performance needs of simultaneous data acquisition, data storage, real-time computation
and display. Call for the latest information on system and performance specifications.
PERFORMANCE
• 1024 pt. Complex/Complex FFT with windowing and averaging:
< 300 micro-seconds (450 MHz Pentium II)
• >20 kHz real-time bandwidth for 16 channels each sampling at
60 kHz, with simultaneous contiguous raw data storage,
FFT computation/storage and graphic display.
COMPUTER
• 32 bit Windows NT PC or Workstation
• PCI bus
• Intel Pentium II CPU
• Second processor optional
• 64 to 512 MByte memory, ECC optional
• Ultra DMA 33 main disk
• Ultra SCSI data disk(s)
• 2,000,000 samples/s disk throughput standard
• CD ROM drive
• CD WORM for data archiving
or
• Read/write CD ROM for data backup
• High resolution color monitor
• Laser printer & plotter
• Color printer optional
• Ethernet networking
| DATA ACQUISITION
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1 to 128 channels standard,
12 bit ADC resolution
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16 bit ADC resolution optional
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2 MHz aggregate sampling (12 bit ADC)
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Programmable anti-aliasing filters
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Programmable input ranges :
±10 V, ± 5 V, ± 2 V, ± 1 V, ± 5 0 0 m V, ± 2 0 0 m
V, ± 10 0 m V, ± 50 mV, ± 20 mV,
±10 mV
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Sine COLA signal input:
separate from measurement channel
inputs 100 mV to 5.0 V peak to peak
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Shock and Random acquisition trigger input:
S/W standard, programmable slope,
level and channel H/W optional, 8 bit, ± 78 mV to ±
10 V
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The
PC/ANALYSIS approach to vibration testing provides an intuitive, easy to
use interface to efficiently manage the complete test process and increase productivity.
Set-up times are reduced and inputs are monitored to reduce errors and to flag values that
exceed system limits. At the other end of the test process, data analysis and hard copy
presentation functions emulate and automate the work flow of the engineer. More than just
generic data acquisition capabilities are provided thereby increasing productivity and
returns on your investment.
PC/ANALYSIS –
GENERAL FEATURES
• Test and channel labeling
• Channel configuration and sensitivities input table
• Real-time multi-channel time and frequency test monitoring
• Screen display of analysis results with zoom and cursors
• Automated and manual printing of test conditions and results
PC/ANALYSIS - SCREEN
PLOTS
• PSD, transfer and coherence functions, SRS, harmonics, magnitude, phase and
Bode display modes.
• One or two plot windows per screen
• Up to 5 curves can be overlaid on a single plot
• Automatic full scale display
• Zoom in and out
• Reference cursor
• Peak search cursors
PC/ANALYSIS -
STATISTICAL ANALYSIS
The statistical analysis feature generates a table with :
• Maximum or minimum levels
• RMS levels
• Levels at user defined frequencies
PC/ANALYSIS -
REPORT MANAGER
The report management feature automatically generates a fully documented report with :
• Multiple plots per page (up to 8)
• Multiple curves per plot (up to 4)
• Automatic or manual axis scaling
• Cursor labeling
• Data listing in Excel format
• Test identification
• Selectable portrait or landscape print format
• Fast high quality laser printer output |
PC/ANALYSIS /Sine
Swept Sine Data Acquisition and Analysis |
PC/ANALYSIS /Random
Random/FFT Signal Acquisition and
Analysis |
| Sampled data
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• |
time data and frequency
information are stored to disk for post-processing |
| Free
frequency sampling |
• |
maximum possible block mode
sampling on an integer number of sine cycles, variable sampling frequency |
| Deterministic
frequency sampling |
• |
pre-determined set of lin or log
evenly spaced frequency points, contiguous sampling |
| Real-time
analysis |
• |
fundamental, global and peak per
channel |
| Digital
tracking filter |
• |
user selectable bandwidth,
significantly improves data quality in noisy environ. |
| Post-processing |
• |
all sampled channels harmonics,
transfer functions |
| Frequency
range |
• |
1Hz to 5,000 Hz, selectable |
| Anti-aliasing
filters |
• |
automatic or manual cut-off
frequency |
| Logarithmic
sweep |
• |
up to 400 Hz/sec |
| Linear
sweep |
• |
up to 300 points/oct at 4 oct/min
(free frequency sampling) |
| • |
up to 800 points/decade
(deterministic frequency) |
| Freq
resolution |
• |
0.01% over the frequency range |
| Freq
accuracy |
• |
0.2% on magnitude |
| Analysis
accuracy |
• |
0.2° on phase |
| Real-time
display |
• |
time |
| • |
digital frequency meter |
| • |
magnitude of selectable response
channels |
| Results
storage |
• |
global, peak, harmonic components
(magnitude, phase, real, imaginary) |
|
| Sampled
data |
• |
time data is stored to disk for
post-processing |
| • |
Contiguous sampling |
| Triggering
modes |
• |
free-run |
| • |
programmable trigger level |
| • |
programmable pre-trigger |
| Real-time
analysis |
• |
PSD, transfer and coherence for
one reference channel |
| • |
all sampled channels are processed |
| Time
editing |
• |
from contiguous data, select the
time segment to be processed, independent of block limits |
| • |
eliminate DC offsets |
| • |
apply user defined windows |
| Post-processing |
• |
utilize any channel as a reference |
| • |
selectable FFT size (contig.
sampling) |
| • |
overlap processing (contig.
sampling) |
| Frequency
range |
• |
up to 2 MHz aggregate sampling |
| • |
3 times oversampling typical |
| Anti-aliasing
filters |
• |
automatic or manual cut-off
frequency |
| FFT block
size |
• |
up to 64k |
| Windowing |
• |
rectangular, Hanning, Hamming,
exponential |
| Averaging |
• |
linear, unlimited number of blocks
in real-time, exponential with selected tc |
| Real-time
display |
• |
time signal |
| • |
PSD |
| • |
overload indicators |
| • |
raw time data |
| Results
storage |
• |
PSD, transfer, coherence |
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PC/ANALYSIS
/Shock
Shock Data Acquisition and Analysis |
| Sampled data |
• |
time data is stored to disk for
post-processing |
Triggering
modes
|
• |
programmable trigger level |
| • |
programmable pre-trigger |
| Multiple
shocks |
• |
automatic re-triggering |
| Real-time
analysis |
• |
PSD, transfer and coherence for
one reference channel |
| • |
all sampled channels are processed |
| Time
editing |
• |
precisely select the time data to
be processed, independent of block limits |
| • |
eliminate DC offsets |
| • |
apply user defined windows |
| Post-processing |
• |
utilize any channel as a reference |
| • |
single and double integration |
| • |
SRS computation in 1/n octave,
n=1, 3, 6, 12, 24 and 48 |
| Frequency
range |
• |
up to 2 MHz aggregate sampling std |
| • |
10 times oversampling typical |
Anti-aliasing
filters |
• |
automatic or manual cut-off
frequency |
|
| FFT block
size |
• |
up to 64k |
| Windowing |
• |
rectangular, Hanning, Hamming |
| Averaging
(FFT) |
• |
user defined assymetrical flat-top |
| • |
linear, unlimited blocks in
real-time |
| • |
limited by disk storage in
post-processing |
| SRS
computation |
• |
primary, residual, composite |
| • |
positive, negative, maximax |
| • |
user defined damping |
| Real-time
display |
• |
time signal |
| • |
PSD |
| • |
Transfer function (Bode, |
| • |
Coherence function |
| • |
selectable response channel |
| • |
overload and noise indicators |
| Results
storage |
• |
raw time data |
| • |
PSD, transfer, coherence |
| • |
SRS |
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Specifications listed may have been updated or modified,
check with factory for latest. |
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