SRS STANFORD RESEARCH SYSTEMS SR785 Two Channel Dynamic Signal Analyzer
SR785 Two Channel Dynamic Signal Analyzer $11,950 9" High Contrast CRT Display 800H x 600V resolution makes measurement data easy to read. (U.S.
Fast Responsive Marker Standard Measurement Modes • FFT • Swept-Sine • Octave • TIme/Histogram • Order Tracking • Time Capture • Find Max/Min or track peaks • THD, THD + N • Band, sideband, harmonic power • Waterfall • Frequency and damping • Peak find • Absolute and relative • Statistics PC (XT) Keyboard Input On-Line Help Locate information on any topic, browse specifications, examine remote commands all from the front panel. Input Channels Enter text and annotations quickly and easily.
SR785 Two Channel Dynamic Signal Analyzer FFT Spectrum Analysis The SR785 Two Channel Dynamic Signal Analyzer is a precision, full-featured signal analyzer that offers state-of-the-art performance and a wide selection of features at a price that's less than half that of competitive analyzers. Building on its predecessor, the SR780, the SR785 incorporates new firmware and hardware that make it the ideal instrument for analyzing both mechanical and electrical systems.
time record, 1000 averages take exactly 4 seconds, during which the SR785 still operates at its maximum display rate. For impact testing, the average preview feature allows each time record or spectrum to be accepted or rejected before adding it to the measurement. The SR785 tracks up to 400 orders simultaneously. You can display the amplitude profile of any two orders in tracked order mode. View order maps or track individual orders with the SR785.
provided to monitor variations of RPM as a function of time. And a complete selection of time and RPM triggering modes is included allowing you to make virtually any rotating machinery measurement. available. Exponentially averaged sound power (Leq) is calculated according to ANSI S1.4-1983, Type 0. Octave displays can be plotted as waterfalls with a fast 4 ms storage interval.
user-defined thresholds are measured with high frequency resolution, while small changes are measured using wider frequency steps between points. A choice of linear sweeps with high resolution, or logarithmic sweeps with up to eight decades of frequency range is provided. any portion of the signal can be played back in any of the SR785's measurement groups except swept-sine.
output levels from 0.1 mV to 5 V and offsets from 0 to ±5 V, and delivers up to 100 mA of current. Arbitrary waveform capability is standard with the SR785. Use the arbitrary source to playback a section of a captured waveform, play a selected FFT time record or upload your own custom waveform from your computer. User Math Create your own measurement in each of the SR785's measurement groups using the math menu.
Use data tables to display up to 100 selected data points in tabular format. Limit tables allow you to define up to 100 upper and lower limit segments in each display for GO/NO GO testing. Data and limit table definitions can also be saved to and recalled from disk for quick setup. Upper trace shows original frequency response data. Lower trace shows curve fit to a portion of the data.
Hypertext links let you quickly switch between related help pages or instantly reference the remote command corresponding to any function. Use the help index to quickly locate information on any topic, jump to the on-line troubleshooting guide, browse a complete listing of the SR785's specifications, or examine a comprehensive description of the SR785's remote commands ... all from the front panel.
SR785 Specifications Cross Channel Specifications apply after 30 minutes of warm-up and within two hours of last auto-offset. All specifications are with 400 line FFT resolution and anti-alias filters enabled unless stated otherwise. Measurement Groups Standard Groups Optional Group FFT analysis, Correlation, Time Histogram, Swept Sine Order Tracking Frequency Range FFT Spans FFT Resolution Real-Time Bandwidth Accuracy 102.4 kHz or 100 kHz (both displays have the same range). 195.3 mHz to 102.
Transient Capture Mode Maximum Rate Max. Capture Length Flatness Continuous real-time data recording to memory. 262,144 samples/sec for both inputs 2 Msamples (single input) 8 Msamples with optional memory Pink Noise Source Bandwidth Flatness Octave Analysis Standards Frequency Range Accuracy Dynamic Range Sound Level Conforms to ANSI standard S1.11-1986, Order 3, Type 1-D. Band centers: Single Channel 1/1 Octave 0.125 Hz - 32 kHz 1/3 Octaves 0.100 Hz - 40 kHz 1/12 Octaves 0.091 Hz - 12.
SR785 Features Auto/Manual Arming, GPIB, RPM Step, Time Step, Pre/Post Trigger Delay Instrument Modes Source Outputs FFT, Time/Histogram, Correlation, Octave, Swept-Sine, Order Tracking Sine, Two-Tone, Swept-Sine, White/Pink Noise, Burst Noise, Chirp, Burst Chirp, and Arbitrary Frequency Domain Measurements Windows Frequency Response, Linear Spectrum, Cross Spectrum, Power Spectrum, Coherence, Power Spectral Density Hanning, Blackman-Harris, Flat Top, Kaiser, Force/Exponential, User-Defined, +/-T/2
Ordering Information SR785 (All prices U.S. list) Two Channel Dynamic Signal Analyzer . . . $11,950 (includes manual, DataViewer, disk utilities and power cord) Order Tracking . . . . . . . . . . . . . . . . . . . . . . . Free (introductory offer) Rack Mount Kit. . . . . . . . . . . . . . . . . . . . . . . $85 8 Msample RAM. . . . . . . . . . . . . . . . . . . . . . call for pricing 12 VDC-115 VAC Converter. . . . . . . . . . . . . $295 MobileCart . . . . . . . . . . . . . . . . . . . . . . . . . .
