HP 35670A Dynamic Signal Analyzer Product Overview
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HP 35670A Dynamic Signal Versatile two- or Analyzer four-channel high-performance FFT-based spectrum/ Product Overview network analyzer 122 µHz to 102.4 kHz 16-bit ADC Frequency Range 102.4 kHz 1 channel 51.2 kHz 2 channel 25.6 kHz 4 channel Dynamic Range 90 dB typical Accuracy ±0.15 dB Channel Match ±0.04 dB and ±0.5 degrees Real-time Bandwidth 25.6 kHz/1 channel Resolution 100, 200, 400 & 800 lines Time Capture 0.8 to 5 Msamples (option UFC) Source Types Random, Burst random, Periodic chirp, Burst chirp, Pink noise, Sine, Swept-Sine (option1D2), Arbitrary (option 1D4) The HP 35670A shown with Four Channels (option AY6) The HP 35670A is a portable two- or piezoelectric integrated circuit power 1C2 HP Instrument BASIC four-channel dynamic signal analyzer supply, analog trigger and tachometer UFF Add 1-Mbyte NVRAM with the versatility to be several inputs, and optional computed order AN2 Add 4-Mbyte RAM instruments at once. Rugged and tracking. (8 Mbytes Total) portable, it’s ideal for field work. Yet UFC Add 8-Mbyte RAM it has the performance and function- Versatile enough to be (12 Mbytes Total) ality required for demanding R&D your only instrument for 100 1D0 - 1D4/UFC bundle applications. Optional features low frequency analysis optimize the instrument for trouble- With the HP 35670A, you carry Laboratory-quality shooting mechanical vibration and several instruments into the field in measurements in the field noise problems, characterizing one package. Frequency, time, and Obtain all of the performance of your control systems, or general spectrum amplitude domain analysis are all bench-top analyzer in a portable and network analysis. available in the standard instrument. instrument. Build on that capability with options Take the HP 35670A that either add new measurement Ease-of-use where it’s needed! capability or enhance all measure- Portability, versatility, and perfor- Whether you’re moving an instrument ment modes. mance are valued attributes, but to be around the world or around the lab, AY6 Add Two Channels (Four Total) really valuable an instrument must portability is a real benefit. Small 1D0 Computed Order Tracking also be easy to use. The HP 35670A enough to fit under an airplane seat, 1D1 Real-Time Octave has a friendly front panel, plus online the HP 35670A goes where it’s Measurements help that’s always available to answer needed. But there’s more to portabil- UK4 Microphone Adapter and your questions. An interactive ity than size. Like a nominal 12- to Power Supply measurement state lets you configure 28-volt dc power input and self- 1D2 Swept-Sine Measurements the instrument setup from a single contained features that do not require 1D3 Curve Fit and Synthesis display. external hardware, such as built-in 1D4 Arbitrary Waveform Source HP 35670A Dynamic Signal Analyzer Versatile Measurement Modes Standard and optional measurement modes include: • FFT Analysis • Real-Time Octave Analysis Powerful Markers HP Instrument BASIC (option 1D1) Extract information Built-In 3.5 inch (Option 1C2) • Order Analysis (option 1D0) from measurement Flexible Disk Drive Develop a custom user- • Swept-Sine (option 1D2) data with trace and Store instrument interface, integrate • Correlation Analysis special markers: states, programs, time several instruments and • Histogram Analysis • Individual Trace captured data, peripherals into a system • Time Capture • Coupled Trace waterfall data, trace using the HP 35670A as All measurement options • Absolute or Relative data, limits, math the system controller, may be retrofitted. • Peak Search functions, data tables, or simply automate • Harmonic and curve fit/synthesis measurements. • Band tables. • Sideband Power Supported disk formats • Waterfall are HP-LIF and • Time Parameter MS-DOS. Internal RAM RPM Display • Frequency and may also be formatted Read RPM in any Damping as storage disk. measurement mode Shown with option AY6 - Add Two Channels Math Functions Input Channels Powerful math and • Analog A-weighted data editing functions filters (switchable) Precision to quickly modify • Transducer measurement results. Online Help Measurements sensitivity input • 16-bit ADC (Curve fit and Applications frequency response oriented help • Engineering units: • ±0.15 dB spectrum g, m/s2, m/s, m, in/s2, ampltude accuracy synthesis available is just a few with option 1D3.) keystrokes away. in/s, in, mil, kg, dyn, • ±0.04 dB, ±0.5 lb, N, and pascals degrees channel • Built-in 4 mA match (full scale) constant current • 90 dB dynamic power supply range (typical) Large 6.9 inch • 130 dB dynamic (17.5 cm) display range with swept- Display area is not sine (option 1D2) compromised by • Up/Down autorange portability • Up only autorange 2 HP-IB Connector Integrate the HP 35670A with Source Types other instruments Low Noise Fan • Random Noise and peripherals for Fan may be turned • Burst Random system operation or off for acoustic DC Power applications. Noise printing/plotting. Accepts 12 to 28 volts • Periodic Chirp System controller Running speed dc (nominal). Use the depends on • Burst Chirp for HP-IB (IEEE- HP 35250A power • Pink Noise 488.1 and 488.2) ambient cable for DC power temperature. • Fixed Sine compatible source connection, or • Arbitrary instrumentation via the HP 35251A power Waveform HP Instrument Serial Port cable with cigarette- Source BASIC (option 1C2). Plot to HP-GL Parallel Port lighter adapter. (Option 1D4) Provides direct plotters or print to Plot to HP-GL plotters • Swept-Sine control of HP-IB HP-GL and raster or print to HP-GL and Source printers, plotters, printers. raster printers. (Option 1D2) and HP SS80 disk drives. Note: The source is located on the front panel of a standard two-channel HP 35670A. AC Power Universal power supply will operate with any combination of voltage between 100 and 240 VAC and line frequency Tachometer Power Select between 47 and External Trigger (42 Volt Peak Max) Switch between 440 Hz. The (42 Volt Peak Max) No external signal ac and dc power maximum power No external signal conditioning hardware sources without requirement is conditioning required. Reads interrupting 350 VA. hardware required. frequency (RPM) on instrument Triggers on selected selected levels operation. level between between ±20 volts. ±10 volts. Keyboard External Monitor Use a standard PC Drive a multisync keyboard to title data, monitor for remote edit HP Instrument viewing by large BASIC programs, groups. or to operate the instrument. 3 Spectrum Analysis FFT-based spectrum analyzers, such Averaging as the HP 35670A, are ideal for Various averaging modes let you measuring the spectra of low- further refine spectrum analysis frequency signals like speech or measurements. Time averaging mechanical vibration. Transient extracts repetitive signals out of the components, usually missed with noise while rms averaging reduces swept-frequency analyzers, are easily the noise to its mean value. Exponen- measured and displayed at speeds tial averaging, available for both time fast enough to follow trends. The and rms averaging, is useful for HP 35670A has both the performance reducing the noise while following and features required to take full changing signals—tracking the advantage of this technology. resonance shifts in a fatiguing structure for example. 16-Bits for High Performance With a 16-bit ADC (90 dB typical dynamic range) and a real-time bandwidth of 25.6 kHz, you can be sure nothing will be missed. Resolve signals using 100 to 1600 lines resolution, or for really close-in analysis, use frequency zoom to resolve signals with up to 61 µHz resolution. Use time or RPM arming to develop waterfalls of sequential vibration spectra for trend analysis or for an overview of device vibration. Power and Linear Spectrums Match your spectrum measurement mode to the signal being tested. Use linear spectrum analysis to measure both the amplitude and phase of periodic signals such as the spectra of rotating machinery. Power spectrum analysis is provided for averaging nonrepetitive signals. Two spectrums of road induced vibration measured at different speeds are compared using the front/back mode of the HP 35670A. 4 Time Domain Use your spectrum analyzer as a low- frequency oscilloscope or view signals in the time and frequency Simultaneous domains simultaneously. (Note: anti- display of alias filters can be switched off.) frequency Special markers for time-domain data and time domain data facilitates facilitate extraction of key control analysis of gear system performance parameters: mesh vibration. overshoot, rise time, setting time, and delay time. Data Table Use a tabular format to keep track of key frequencies in the spectra of rotating machinery. The amplitude and frequency of the signal and a Markers 16-character entry label field are Markers streamline analysis by listed for each selected point. helping you select and display specific data. Marker functions include marker to peak, next right peak, and coupled Measurement markers for selecting points in results at key frequencies can multiple data displays. Markers be labeled and readouts are absolute or relative to listed using data your selected reference. table. Special Markers Three special marker functions facilitate analysis of your spectral data. Sideband markers aid analysis of modulation signals. Use this function to quickly locate sidebands in the complicated spectra of rotating machines. A band-power marker reads the total power in a selected band of frequencies and a total harmonic Automatic Units Conversion distortion marker lets you calculate total harmonic distortion without Display vibration data in the units including the effects of noise. of your choice. Select g, m/sec2, in/sec2, m/s, in/s, m, mil, inch, Kg, lb, N, dyn, or pascals as appropri- ate for your application. The instru- ment automatically converts fre- quency-domain data from specified input transducer units to the units you select for display. For example, accelerometer data is automatically converted and displayed as mils when Harmonic markers mils are selected.