Keysight 35670A Dynamic Signal Analyzer
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Keysight 35670A Dynamic Signal Analyzer Versatile two- or four-channel high-performance FFT-based spectrum/network analyzer 122 μHz to 102.4 kHz 16-bit ADC Technical Overview 02 | Keysight | 35670A Dynamic Signal Analyzer - Technical Overview The Keysight Technologies, Inc. Versatile enough to be Key Specifications 35670A is a portable two- or four-channel dynamic signal analyzer your only instrument Frequency 102.4 kHz 1 channel with the ver sa til i ty to be several for low fre quen cy range: 51.2 kHz 2 channel instruments at once. Rugged and 25.6 kHz 4 channel portable, it’s ideal for field work. analysis Dynamic 90 dB typical Yet it has the per for mance and range: func tion al ity required for demanding With the 35670A, you carry several Accuracy: ±0.15 dB R&D applications. Optional features instruments into the field in one Channel ±0.04 dB and ±0.5 optimize the instrument for trou- package. Fre quen cy, time, and match: degrees ble shoot ing mechanical vibration amplitude domain analysis are all Real-time 25.6 kHz/1 channel and noise problems, characterizing avail able in the standard in stru ment. bandwidth: control systems, or general spectrum Build on Resolution: 100, 200, 400 & and network analysis. that capability with options that ei- 800 lines ther add new measurement capability Time > 6 Msamples or enhance all mea sure ment modes. capture: Take the Keysight AY6 Add two chan nels (four total) Source Random, burst 35670A 1D0 Computed order tracking types: random, periodic 1D1 Real-time octave chirp, burst chirp, where it’s needed! measurements pink noise, sine, UK4 Microphone adapter and swept-sine Whether you’re moving an in stru ment power supply (Option 1D2), around the world or around the lab, 1D2 Swept-sine mea sure ments arbitrary (Option portability is a real benefit. Small 1D3 Curve fit and syn the sis 1D4) enough to fit under an airplane seat, 1D4 Arbitrary wave form source the 35670A goes where it’s needed. 1C2 Keysight Instrument BASIC But there’s more to port a bil i ty than 100 1D0 – 1D4 bundle size. Like a nominal 12- to 28-volt 1G0 DataLink data transfer solution DC power input and self-con tained features that do not require external hardware, such as built-in piezoelec- tric integrated circuit power supply, analog trigger and ta chom e ter inputs, and optional computed order tracking. 03 | Keysight | 35670A Dynamic Signal Analyzer - Technical Overview Keysight 35670A Dynamic Signal Analyzer Versatile measure- Keysight Instru- ment modes ment BASIC Standard and optional Powerful Built-In 3.5 inch mea sure ment modes include: markers (Option 1C2) – FFT analysis flexible disk – Real-time octave analysis Extract information from Develop a custom drive (Option 1D1) measurement data with user-interface, integrate – Order analysis (Option 1D0) trace and special markers: Store instrument states, several instruments and – Swept-sine (Option 1D2) – Individual trace programs, time captured peripherals into a system – Correlation analysis – Coupled trace data, waterfall data, trace using the 35670A as – Histogram analysis – Absolute or relative data, limits, math func- the system controller, – Time capture – Peak search tions, data tables, and or simply automate All measurement options – Harmonic curve fit/synthesis tables. measurements. may be retrofitted. – Band – Sideband power Supported disk formats – Waterfall are HP-LIF and MS-DOS®. RPM display – Time parameter Internal RAM may also be formatted as storage disk. Read RPM in any mea- – Frequency and damping surement mode Shown with Option AY6 – add two channels Online help Precision Input channels Math Applications mea sure- – 16-bit ADC functions oriented help – ±0.15 dB spectrum is just a few ments amplitude accuracy Powerful math and keystrokes away. – ±0.04 dB, ±0.5 degrees data editing functions – Analog A-weighted to quickly modify filters (switchable) channel match (full Large 6.3 scale) measurement results. – Transducer (Curve fit and sensitivity input – 90 dB dynamic range inch (typical) frequency response – Engineering units: synthesis available with 2 2 – 130 dB dynamic range (17 cm) g, m/s , m/s, m, in/s , Option 1D3.) in/s, in, mil, kg, dyn, with swept-sine (Option display lb, N, and pascals 1D2) – Up/down autorange Display area is not – Built-in 4 mA – Up only autorange com pro mised by constant current portability. power supply 04 | Keysight | 35670A Dynamic Signal Analyzer - Technical Overview Source types GPIB DC power Low noise fan connector Parallel port Accepts 12 to 28 volts dc Fan may be turned off – Random noise (nominal). Use the 35250A for acoustic ap pli ca tions. – Burst random noise Integrate the 35670A Print to older HP-GL power cable for DC power Running speed depends – Periodic chirp with other instruments printers with PCL 5 source connection, or the on ambient temperature. – Burst chirp for system operation. capability, such as an HP 35251A power cable with – Pink noise System controller for LaserJet 4000 series. cigarette-lighter adapter. – Fixed Sine GPIB (IEEE-488.1 and – Arbitrary waveform 488.2) compatible source (Option 1D4) instrumentation via – Swept-sine source Keysight Instrument (Option 1D2) BASIC (Option 1C2). Note: The source is located on the Serial front panel of a standard two- port channel 35670A. AC power Universal power sup- ply will operate with any combination of volt- age between 100 and 240 VAC and line frequency between External Tachometer Power select 47 and trigger (42 Volt peak max) Switch between 440 Hz. The No external signal AC and DC power maximum power (42 Volt peak max) conditioning hardware sources without inter- requirement is No external signal required. Reads rupting instrument 350 VA. conditioning hardware frequency (RPM) on operation. required. Triggers on selected levels selected level between between ±20 Volts. ±10 Volts. Keyboard External Use a standard PC monitor keyboard to title data, Drive a VGA monitor for edit Keysight Instrument remote viewing by large BASIC programs, or to groups. operate the instrument. 05 | Keysight | 35670A Dynamic Signal Analyzer - Technical Overview Spectrum Analysis Laboratory-quality FFT-based spectrum analyzers, such Averaging mea sure ments in the field as the 35670A, are ideal for measuring the spectra of low-fre- Various averaging modes let you Obtain all of the performance of your quen cy signals like speech or further refine spectrum analysis mea- bench-top analyzer in a portable me chan i cal vibration. Transient surements. Time averaging extracts instrument. com po nents, usually missed with repetitive signals out of the noise swept-frequency analyzers, are easily while rms averaging reduces the Ease-of-use measured and displayed at speeds noise to its mean value. Ex po nen tial averaging, available for both time and Portability, versatility, and per for- fast enough to follow trends. The rms averaging, is useful for reducing mance are valued attributes, but to 35670A has both the per for mance the noise while following changing be really valuable an instrument must and features required to take full signals—tracking the resonance shifts also be easy to use. The 35670A ad van tage of this tech nol o gy. in a fatiguing structure for example. has a friendly front panel, plus online help that’s always available to 16-bits for high per for mance answer your questions. An interactive With a 16-bit ADC (90 dB typical mea sure ment state lets you configure dynamic range) and a real-time the instrument setup from a single bandwidth of 25.6 kHz, you can be display. sure nothing will be missed. Resolve signals using 100 to 1600 lines res o lu tion, 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 com pared using the front/back mode of the Keysight 35670A. 06 | Keysight | 35670A Dynamic Signal Analyzer - Technical Overview Time domain Special markers machines. A band-power marker reads the total power in a selected Use your spectrum analyzer as a Three special marker functions band of frequencies and a total low-frequency os cil lo scope or view facilitate analysis of your spectral harmonic dis tor tion marker lets you signals in the time and frequency data. Sideband markers aid analysis calculate total harmonic distortion domains simultaneously. of modulation signals. Use this without including the effects of noise. (Note: anti-alias filters can be function to quickly locate side bands switched off.) Special markers for in the complicated spectra of rotating time-domain data facilitate extraction of key control system performance Simultaneous display of fre quen cy and time parameters: overshoot, rise time, domain data facilitates setting time, and delay time. analysis of gear mesh vibration. 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 16-character entry label field are listed for each selected point. Automatic units conversion Display vibration data in the units 2 of your choice. Select g, m/sec , Measurement results at in/sec2, m/s, in/s, m, mil, inch, Kg, key fre quen cies can be lb, N, dyn, or pascals as appro pri ate labeled and listed using data table. for your application. The in stru ment au to mat i cal ly converts fre quen- cy-domain data from specified input trans duc er units to the units you select for display.