Tektronix AM700 audio analyzer.
We offer rental and sales of audio analyzers and accessories, such as the Tektronix AM700 and Agilent 8903B, audio amplifiers such as the Keysight 33502A, and the Keysight 3458A 8.5-digit multimeter.
An audio analyzer serves as an analog and digital audio generator and as an audio and spectrum analyzer that breaks the signal down into its different frequencies. It monitors audio signals to make signal timing and amplitude measurements, and it also performs digital interface tests of the electrical characteristics and data of digital audio interfaces.
The AM700 is an easy-to-use, high-performance audio analyzer. It combines the ability to make conventional electronic audio measurements with more advanced measurements designed for emerging audio technologies.
The AM700 accepts balanced and unbalanced analog signals, as well as AES/EBU, S/PDIF and optical digital signals. Once acquired, powerful signal processing software performs the filtering, analysis and calculation of the test results. Measurement applications include FFT (with multitone mode), graph plotting, monitor, and digital interface tools.
An advanced set of measurements allows users to examine or measure important digital audio interface parameters, including eye diagram analysis, timing measurements, data format analysis and jitter measurements. The AM700’s reference capability allows the instrument to generate or measure digital audio signals while synchronized to a house digital reference.
The AM700 can generate test signals in both the analog and digital domains. The internal analog and digital audio generators operate in “true stereo” mode, providing independent signal generation capability for each channel of each generator. Full support is provided for all conventional test signal needs.
Features:
Two-channel FFT
Graph plotting
Multitone measurements
Distortion analysis
Digital audio analysis
True stereo analyzer
Analog signal generator
HP 8903B Audio Analyzer
audio equipment for rent
Electrical noise is any electrical signal that adds to an existing signal, the useful signal (music) that is meant to be amplified.
The noise level determines the lower limit of a signal; below it the signal is not valid. You hear it, as noise in the form of hisses or hums, and it masks the useful signal. In audio it may be acceptable to have a noise floor, since after all we can distinguish those signals, but it is extremely annoying, and since the goal is maximum fidelity to the original sound, it has to be eliminated.
In the case of measuring instruments, data transmission, etc., noise is far less harmless. A noise level that is too high gives inaccurate measurements or creates transmission errors.
Electrical noise is very different from ambient noise. The best-known examples in audio equipment are the background hiss of tapes and vinyl records, and the 50 Hz hum (interference), known as hum.
Rental of the Agilent 35670A dynamic signal analyzer.
Description
The HP/Agilent 35670A is a versatile FFT analyzer with a built-in source for general spectrum and network analysis, and for octave, order and correlation analysis. The built-in source with optional analysis features optimizes the instrument for analyzing and troubleshooting noise, vibration and acoustic problems, evaluating and solving rotating machinery problems, and characterizing control system parameters.
Keysight Technologies
35670A Dynamic Signal Analyzer
Versatile two- or four-channel, high-performance FFT-based network/spectrum analyzer, 122 µHz to 102.4 kHz, 16-bit ADC.
Summary of standard instrument features.
Instrument modes
FFT analysis Histogram/time
Correlation analysis Time capture
Display format
Measurement
Frequency domain
Frequency response
Power spectrum
Linear spectrum coherence
Cross spectrum
Power spectral density.
Time domain (oscilloscope mode) Time waveform autocorrelation Cross-correlation orbit diagram Amplitude domain Histogram, PDF, CDF.
Display scale.
Selectable autoscale reference
Manual scale Linear or log X-axis
Input range tracking log Y-axis
X and Y scale markers with expand and scroll.
Trace coordinates.
Linear magnitude unwrapped phase Log magnitude Real part dB magnitude of imaginary part Nyquist diagram with group delay Polar phase.
Marker functions.
Individual trace markers.
Coupled multiple trace markers. Absolute or relative marker Peak search. Harmonic markers Band marker. Sideband power markers Waterfall markers.
Time parameter markers Frequency response markers.
Trace units.
Y-axis amplitude: unit combinations, unit value, calculated value and unit format describe the y-axis amplitude. Units: volts, g, meters/sec2, inches/sec2, meters/sec, inches/sec, meters, mils, inches, pascals, Kg, N, dyn, lb, user-defined EUs. Unit value: rms, peak, peak-to-peak. Calculated value: V, V2, V2/Hz, √Hz, V2 s/Hz (ESD). Unit format: linear, dB with user-selectable dB reference, dBm with user-selectable impedance. Y-axis phase: degrees, radians. X-axis: Hz, cpm, order, seconds, user-defined.
Signal averaging (FFT mode).
Average types (1 to 9,999,999 averages) Time exponential RMS exponential RMS Peak hold.
Averaging controls.
Overload rejection
Fast average on/off Select update rate.
Select overlap process percentage Time record preview.
+, -, *, / Conjugate Real and imaginary magnitude Square root FFT, FFT-1 LN EXP * jω or / jω PSD Differentiation A, B and C weighting Integration constants K1 to K5 Functions F1 to F5.
Measurement control
Start measurement
Pause/continue measurement.
Analysis
Limit test with pass/fail Data table with tabular readout.
Data editing.
Time capture functions
Capture transient events for repeated analysis in FFT, octave, order, histogram or correlation modes (except sine sweep).
Time-captured data can be saved to internal data or external disk, or transferred over GPIB. Zoom on captured data for detailed narrowband analysis.
Tachometer input.
Range of ± 4 V or ± 20 V Resolution of 40 mV or 200 mV Up to 2048 pulses/rev. Tachometer hold control.
Data storage function.
The built-in 3.5-inch, 1.44 Mbyte flexible disk drive also supports 720 KByte disks and a 2 Mbyte NVRAM disk. Both MS-DOS and HP-LIF formats are available. Data can be formatted as ASCII or binary (SDF). The 35670A provides storage and recall from the internal disk, internal RAM disk, internal NVRAM disk or external GPIB disk for any of the following data:
Instrument setup states
Trace data
Limit data User-math data
Time capture buffers Keysight Instrument BASIC programs Waterfall display data
Data tables
Curve fit/synthesis tables.
Source outputs.
Random Burst random
Periodic chirp Burst chirp
Pink noise Fixed sine .
Note: some source types are not available for use in optional modes
See the option description for more details.
Input channels;
Manual range Anti-alias filters On/Off Auto AC or DC coupling up only Auto range up/down Half-range LED and overload indicators A-weight filters Floating or grounded On/Off Transducer power supplies (4 mA constant current)
GPIB capabilities
Complies with IEEE 488.1/488.2 Conforms to SCPI 1992 Controller with the Keysight Instrument BASIC option.
Frequency;
20 spans from 195 mHz to 102.4 kHz (1-channel mode) 20 spans from 98 mHz to 51.2 kHz (2-channel mode) Digital zoom with 244 µHz resolution across the entire 102.4 kHz frequency band.
Calibration and memory.
Single or automatic calibration Built-in diagnostics and service tests Nonvolatile clock with time/date Date and time stamp on plots and saved data files.
Resolution ;
100, 200, 400, 800 and 1600 lines.
Windows Hann Uniform Flat top/exponential force.
Keysight 35670A specifications.
Instrument specifications apply after a 15-minute warm-up and within 2 hours of the last self-calibration. When the internal cooling fan has been turned off, specifications apply within 5 minutes of the last self-calibration. All specifications are at 400-line frequency resolution and with anti-alias filters enabled unless otherwise noted.
Evolving since 1939. Our unique combination of hardware, software, services and people can help you achieve your next big breakthrough. We are unlocking the future of technology. From Hewlett-Packard to Agilent to Keysight.
Powering up the AGILENT 35670A. The entire power-up procedure for the AGILENT 35670A takes 40 seconds. During that time the analyzer completes a self-test.
