AGILENT 35670A

Supplemental Operator’s Guide

Section 20 : Peak Hold During a Machine Run-up and Coast-Down

Peak amplitudes experienced during run-ups and coast-downs can be measured directly with the AGILENT 35670A using peak hold. Although the resulting spectra will indicate the maximum amplitude measured in each frequency bin during the course of the run-up and run-down, it is not possible to determine from this information whether the peak was due to the fundamental frequency or a harmonic.

To measure peak amplitudes, peak hold averaging is selected with enough averages specified so that peaks can be accumulated during the entire run-up and run-down, after which the measurement is paused and the results examined.

To set up a single-channel peak hold average for a run-up duration of 1 minute, proceed as follows:

Select a frequency span and resolution, for example 800 Hz and 400 lines.

Determine the time record length for this combination, T=N/F=400/800=0.5 s

Determine how many averages are required to last for the measurement duration. Navg=Duration/T=60/.5=120 averages

Specify number of averages to be greater than this number.

Preset the AGILENT 35670A

Turn on the AGILENT 35670A, or

Press the green [Preset] hardkey

Press the yellow [Pause/Cont] hardkey if desired.

Press [CHANNELS 1 2 4 ] softkey (F7) until 1 is highlighted.

Specify measurement parameters

Press the [Freq] hardkey

Enter 800 and then press the [Hz] softkey (F2)

Press the [Avg] hardkey.

Press the [NUMBER AVERAGES] softkey (F2), enter 200, then press the

[ENTER] softkey (F1).

Turn on averaging by pressing the [AVERAGE ON OFF] softkey (F1) until ON is highlighted.

Press the [AVERAGE TYPE] softkey (F3).

Press the [PEAK HOLD] softkey (F5).

Set up display format to measure peak amplitude

Press the [Disp Format] hardkey.

Press the [SINGLE] softkey (F1)

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Agilent Technologies Agilent 35670A manual Peak Hold During a Machine Run-up and Coast-Down, Specify measurement parameters

Agilent 35670A specifications

Agilent Technologies Agilent 35670A is a prominent and versatile dynamic signal analyzer designed for various applications in vibration testing, structural analysis, and noise measurement. Engineered to meet the rigorous demands of engineers and researchers, the 35670A is especially valued for its advanced features and functionalities that facilitate detailed analysis and troubleshooting.

One of the primary features of the Agilent 35670A is its ability to perform real-time signal analysis. The instrument is equipped with a powerful processing engine that handles large amounts of data efficiently, providing fast and accurate results. This real-time capability is critical for dynamic testing applications, allowing engineers to monitor and analyze signals as they occur, thereby facilitating quicker decision-making and problem identification.

The Agilent 35670A employs advanced Fast Fourier Transform (FFT) algorithms, which provide high-resolution spectral analysis. This feature is essential for engineers needing to identify frequency components in complex signals, making it particularly useful in the fields of acoustics and mechanical engineering. The analyzer supports various types of measurements, such as magnitude and phase, enabling users to delve deeply into their data.

Another key technology embedded in the Agilent 35670A is its ability to perform multi-channel measurements. The instrument can connect to a variety of external sensors and testing devices, making it a flexible choice for users who need to analyze multiple signals simultaneously. This multi-channel feature is particularly advantageous in automotive testing, aerospace applications, and structural health monitoring.

The device also comes equipped with a user-friendly graphical interface, enhancing the overall user experience. The interface facilitates easy navigation and access to various measurement modes, settings, and data visualizations. Additionally, the Agilent 35670A supports automated measurements, allowing users to save time and reduce human error in repetitive testing scenarios.

Furthermore, the Agilent 35670A offers extensive connectivity options, including GPIB and USB interfaces, making it easy to integrate into existing laboratory setups and automated testing systems. This flexibility ensures that users can adapt the analyzer to their specific needs and workflow processes.

In summary, the Agilent 35670A stands out as a sophisticated dynamic signal analyzer that combines advanced signal processing technologies with user-friendly features. Its real-time analysis, multi-channel capabilities, and extensive connectivity options make it an invaluable tool for professionals in various engineering fields, dedicated to achieving precision in their analyses and solutions.