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Sine testing can be done two ways:
1. Overall test level control, where we do not care
about what frequency causes the response
energy.
2. Fundamental Control, which requires Tracking
Filters. See Figure 2 below
Nearly all tests presume Tracking Filters are being
employed. PUMA provides True analog quality tracking
filters created in DSP with the same Sine-Co-Sine
Heterodyne method SD patented in 1961, If you must test
to MilStd expectations, you must use tracking filters. FFT
based processes DO NOT yield the same accuracy that
Digital Tracking Filters offer.
Signal Generation hardware matters. PUMA generates
harmonic free analog quality Sine signals that permit
remarkable resonance control and accuracy.
NOT generating Harmonic content, means the power
amplifier WON’T receive high frequency energy which it
CANNOT reproduce, thereby removing another worry
from the Test Professional’s mind.
Figure 1
• Analog quality sine signal generation
• Multi-channel digital tracking filters with
variable fixed and proportional
bandwidths
• Digital re-sampling provides true
proportional bandwidth tracking filters
• Sweep range from 0.1 to 10,000 Hz
• Optional resonance search and phase-
tracked dwell
• Frequency Response Function (FRF)
measurements for all active channels
• Independent limit profiles for each active
measurement channel
Figure 2
Graphics so POWERFUL, the user
interface can be simple
CATS Sine
Control Methods
Control loop
Control Performance
Dynamic range
Output signal
Level accuracy
Loop time
Compression rate
Harmonic distortion
Reference Profile
Definition
Segment types
Crossover frequencies
Alarm and abort limits
Sweep range
Sweep resolution
Spectrum dynamic limits
Limit Profiles (optional)
Definition
Segment types
Crossover frequencies
Number
Control Parameters
Mode of operation
Test duration
Measurement processing
Tracking filter types
Transducer types
Number of control channels
Multi-channel control
strategy
Abort channels
Compression
Units
Box Tolerance Enable
Startup/Shutdown Rate
Sweep Parameters
Sweep mode
Sweep duration
Number of sweeps
Sweep rate-linear
Sweep rate-logarithmic
Initial sweep direction
Safety Features
Shaker limits
Technical Specifications
True analog-quality sine sweep with a double precision
integrated phase algorithm for low distortion
Greater than 80 dB with 0.05 dB level step control over
the full range
Analog-quality digital sine generation, using a double
precision integrated phase algorithm for low distortion
Control to within ± 1 dB at a sweep rate of1 oct/min
through a 600 Hz resonance of a linear system with a
Q of 70 with an internal 20% proportional tracking filter
Sweep frequency resolution±0.5% of the drive
frequency
Less than 5 msec for single channel control
Up to 3,500 dB/sec with unconditionally stable
feedback control loop
< -75 dB at full output
Up to 500 frequency segments
Constant displacement, velocity, acceleration, and
straight line acceleration (linear or logarithmic)
Automatically calculated to avoid segment boundary
discontinuities
Independent positive and negative alarm and abort
margins
User-defined sweep range from 1 to 5000 Hz; and 0.01
to 10000 Hz (Premier) optional
User-defined resolution of 450 to 800 points per
sweep; 450 to 2400 points per sweep (Premier)
optional
Acceleration range, maximum or minimum
acceleration, maximum velocity and maximum
displacement
Up to 500 frequency segments
Constant displacement, velocity, acceleration, and
straight line acceleration (linear or logarithmic)
Automatically calculated to avoid segment boundary
discontinuities
Up to the number of active channels minus one
(Premier)
Manual, automatic
Maximum 99,999 sweeps or 9999:59:59
(hhhh:mm:ss); unlimited test
RMS, or tracking filter processing for all channels in
parallel; processing type individually selectable for
each channel
Proportional to drive frequency, 1 to 200% and fixed
bandwidth, 1 Hz to 1,000Hz
Control based on acceleration, velocity, displacement
(transducer with programmable transition frequency
band)
1 to all available channels, max 16
RMS, arithmetic average, min, max
Abort test when user-defined level exceeded
5% to 100%
m/s2 - m/s - mm; g – in/sec - in; g - m/s – mm
Alarm & Abort width set 0 to 100%
1 to 99 dB/sec
Linear, logarithmic
User-defined, maximum 999:59:59 (hhh:mm:ss)
0.01 to 100,000
0.00003 to 300 Hz/sec (0.0018 to 18,000Hz/min)
0.1 to 800 Oct/min
Up, down
Pretest verification that spectrum dynamic limits are
within shaker operational limits (acceleration, velocity,
displacement and voltage)
Spectral Dynamics, Inc.
2730 Orchard Parkway
San Jose, CA 95134
TEL. 408.678.3500
FAX. 408.678.3580
Loop check max. drive
Control signal loss
Manual abort
Maximum drive signal
Startup/shutdown rates
Test Automation
Test scheduling
Sweep rate table
Compression table
Schedule cycles
Print Automation
Base Engineering Units
Engineering Units
Calculations
Channel Setup
Channel type
Sensitivity
Channel loop check
Channel label
Transducer serial number
Transducer Database
On-Line Test Analysis
Display functions
Cursors
Scaling of display
Real-time/stored data
Passive Sine Analysis
Resonance Search &
Dwell (optional)
Dwell modes
Search parameters
Q Search
Smoothing
Search Channel
Phase Reference Channel
Resonance calculation
Dwell table parameters
Dwell level type
Data Storage
Setup options
Playback
Documentation
Test summary
Run message log
Safety Features
Shaker limits
Loop check max. drive
Control signal loss
Manual abort
Maximum drive signal
Startup/shutdown rates
User-selectable, 0 to 5,000 mV RMS
Continuous automatic detection
Graphical and keyboard abort buttons
0.0001 to 12 V peak
Independently selectable, 1 to 99 dB/sec
User-defined sequence of up to 500 independent tests
run automatically
Up to 50 sweep rate vs. frequency segments
Up to 50 compression speed vs. frequency segments
1 to 100
Ability to create reports Automatically with Customized
displays
Label(EU), Conversion(EU/Transducer Units)
Integrated (Label and Scale Factor), Double
Integrated(Label and Scale Factor), Differentiated
(Label and Scale Factor), Double Differentiated (Label
and Scale Factor)
Control, measurement, reference, limit, abort, inactive
0.001 to 999,999 mV/g or mV/(m/s2) mm; EU for
Measurement Channels
Enabled, disabled
Up to 20 characters for each channel
Up to 10 characters for each channel
Table Driven Archival Database
Control, drive, measurement channel 1 to 32,
frequency response function (magnitude/phase or
real/imaginary
X and Y value readout, peak search, trace
tagging, multi-window looked positioning
Log/linear, auto-scaled/fixed
Simultaneous display and overlay of real-time data and
any stored data
Same capability as test operations w/o output
generation
Fixed frequency, phase tracked(auto/manual),
Continuous ( w/reset option)
Max no. of resonances, hysteresis, minimum Q value
Peak Ratio or –3dB points
Low, Medium, High
Any active channel
Any active channel
Resonance frequency, Q, phase, level
Duration, start frequency, dwell frequency, end
frequency, dwell level and phase, alarm limit, abort
limit
Acceleration, velocity, displacement
Sweep Increment, first sweep, last sweep
Scan through the entire test data file, with adjustable
delay and Tagging
Fully documented post-test summary, easily printed or
incorporated into any document using standard word
processing software
Text file records all system status messages displayed
during test run
Pretest verification that spectrum dynamic limits are
within shaker operational limits (acceleration, velocity,
displacement and voltage)
User-selectable, 0 to 5,000 mV RMS
Continuous automatic detection
Graphical and keyboard abort buttons
0.0001 to 12 V peak
Independently selectable, 1 to 99 dB/sec
In keeping with our commitment to continuous product improvement, the
information herein is subject to change. Copyright 2005 Spectral Dynamics, Inc.
All rights reserved. CATS and STAR logos are registered trademarks or Spectral
Dynamics Inc. All other trademarks are properties of their respective owners.
www.spectraldynamics.com
TSPUMASN0301
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