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SR785 Features
Instrument Modes
FFT, Time/Histogram, Correlation, Octave, Swept-Sine, Order
Tracking
Frequency Domain Measurements
Frequency Response, Linear Spectrum, Cross Spectrum, Power
Spectrum, Coherence, Power Spectral Density
Time Domain Measurements
Time Record, Cross Correlation, Auto Correlation, Orbit
Amplitude Domain Measurements
Histogram, PDF, CDF
FFT Resolution
100, 200, 400, 800 lines
Views
Linear Magnitude, Log Magnitude, dB Magnitude, Magnitude
Squared, Real Part, Imaginary Part, Phase, Unwrapped Phase,
Nichols, Nyquist, Polar
Units
V, V
2
, V
2
/Hz, V/√Hz, meters, meters/sec, meters/sec
2
, inches,
inches/sec, inches/sec
2
, mils, g, kg, lbs., N, dynes, pascals, bars,
SPL, user-defined engineering units (EUs)
Displays
Single, Dual, Front/Back overlay, Waterfall with Skew, Zoom and
Pan, Grid On/Off
Marker Functions
Trace Marker, Dual Trace Linked Marker, Absolute and Relative
Marker, Peak Find, Harmonic Marker, Band and Sideband
Marker, Waterfall Marker, Frequency-Damping Marker
Averaging
RMS, Vector, Peak Hold, Linear, Exponential, Equal Confidence
(Octave), Preview Time Record, % Overlap Averaging, Overload
Reject
Triggering
Continuous, Internal, External (Analog or TTL), Source,
Auto/Manual Arming, GPIB, RPM Step, Time Step, Pre/Post
Trigger Delay
Source Outputs
Sine, Two-Tone, Swept-Sine, White/Pink Noise, Burst Noise,
Chirp, Burst Chirp, and Arbitrary
Windows
Hanning, Blackman-Harris, Flat Top, Kaiser, Force/Exponential,
User-Defined, +/-T/2, +/-T/4, T/2, Uniform
User Math
+, -, *, /, Conjugate, Magnitude/Phase, Real/Imaginary, Sqrt, FFT,
Inverse FFT, jω, Log, Exp, d/dx, Group Delay, A, B, C
Weighting, x/x-1, Trace 1 – 4, Vector Average, RMS Average,
Peak Hold
Analysis
Harmonic, Band, Sideband, THD, THD + N, Limit Test with
Pass/Fail, Data Table, Exceedance, Statistics, Curve Fit and
Synthesis
Time Capture
Capture Time Data for later analysis (FFT or Octave). Up to 2
Msamples (8 Msamples optional) of data can be saved.
Storage
3.5”, 1.44 Mbyte, DOS formatted disk. Save data, setups and hard
copy data.
Hard Copy and Interfaces
Print to Dot Matrix or PCL (LaserJet and DeskJet) printers. Plot
to HP-GL or Postscript plotters. Print/Plot on-line (RS-232 serial,
Centronics parallel or IEEE-488) or to disk file. EPS, GIF, PCX
graphic formats also available for disk storage.
Data Conversion Utility
Data, waterfall and capture files can be converted to ASCII. Data
files can also be converted to Universal File Format, SDF format
or MATLAB MAT-File Format. SDF and SR780 files can be
converted to SR785 format.
DataViewer
Windows 95 based graphics program for viewing SR785 files.
Graphs can be pasted to the clipboard or saved in PCX, BMP or
GIF formats.