How Do I Choose the Best Fiber-Optic Scope?

A light oscilloscope is a recording instrument that records the instantaneous value of one or more parameters on a photosensitive recording paper by using a vibrator to deflect and reflect the light beam.

Light oscilloscope

Light beam oscillograph : The measured parameter can be electricity such as current or voltage, or various non-electricity that has been converted into electricity. For example, when used with strain gauges in mechanical engineering, it can measure stress, strain, and torque. And vibration. The light oscilloscope records with a light beam. The light beam has no inertia, and the optical record has no friction. It can also increase the optical amplification by increasing the length of the light arm. Compared with other recorders, the working frequency of the light oscilloscope is higher, up to 10,000 Hz, while the general pen recorder does not exceed 100 Hz, and the jet recorder does not exceed 1000 Hz. It also has the advantages of higher current sensitivity, lower recording error, and lighter and smaller instruments. It is especially suitable for making a multi-line oscilloscope that can record several or dozens of different parameters at the same time, but the waveform can only be processed after Appears, and the recording paper used is more expensive.

The first light oscilloscope appeared in the early 20th century. Beginning in the 1960s, the use of ultraviolet direct recording paper greatly simplified the process of displaying waveforms and made the operation of the oscilloscope more convenient and reliable.

The light oscilloscope consists of a measurement part and a recording part. The measurement part is mainly composed of the magnetoelectric system oscillator (see

The vibrator is a key part of a light oscilloscope. Different types of vibrators have different natural frequencies, operating frequency ranges, sensitivity, and maximum allowable current. When using, select the appropriate oscillator according to the signal to be measured. The recording error of a light oscilloscope is generally ± 5%. The natural frequency of the vibrator can reach 15000Hz, and it can record the current signal below 10000Hz. The measurement part is driven by current, and the input impedance is low, usually only tens of ohms, which is suitable for recording of low internal resistance voltage signal source or current signal source. The light oscilloscope is mainly used to record the transient process of current, and the recording and analysis of non-electricity such as vibration and strain. It can also be used to observe physiological phenomena.