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The correct way to test the crystal oscillator by oscilloscope.įirst of all, let's answer the previous question. Therefore, when performing the crystal test, it is necessary to ensure sufficient bandwidth and a small input capacitance. The crystal oscillator is sensitive to the capacitive load, and the probe capacitance is relatively large, which is equivalent to a very heavy load connected in parallel in the crystal oscillator circuit, which easily leads to the circuit stop the vibration and get the correct measurement results. In addition to the bandwidth, when testing the crystal oscillator, Jotrin Electronics Limited reminds everyone that it should be paid attention to: The theoretical value of bandwidth is twice as high as the frequency of signal that be measured, the actual test square wave bandwidth should be 10 times the frequency of the measured signal. The crystal oscillator waveform is generally a sine wave or a square wave.When the output waveform is a square wave, the general rising edge is steep and contains more high-frequency signals.Īt this time, it is necessary to ensure that the test of bandwidth is sufficient. The Analysis of crystal vibration waveform The active crystal oscillator does not require an internal oscillator, the signal quality is good, stable, and the connection method is relatively simple, and does not require complicated configuration circuits. The active crystal oscillator is a complete oscillator with a transistor and a RC component except the quartz crystal. The working principle of passive crystal oscillator as follows: electrodes are plated on both sides of the quartz crystal wafer, and a certain voltage is applied to the two electrodes.īecause the piezoelectric effect of the quartz is formed, the voltage is naturally formed, a sinusoidal waveform formed.
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The Passive crystals have no voltage requirements, and the signal level is variable, that is to say, passive crystal oscillator is determined by the start-up circuit. The crystal oscillator can be roughly divided into two categories: passive crystal oscillator and active crystal oscillator.Ī passive crystal oscillator is a non-polar electronic component that requires a clock circuit to generate an oscillating signal and cannot oscillate itself. Can the 200MHZ oscilloscope not measure the crystal oscillator of 10MHZ? Jotrin Electronics Limited will solve this doubts for everyone.įirst, let's briefly introduce the crystal oscillator.
#Smart electronics smexoscope for free
There’s not an awful lot of info available at the moment, apart from a screenshot and the fact that it will also be a free download from the developer’s website.Ħ4-bit s(M)exoscope is available for free download via Armando Montanez (23.2 MB download size, ZIP archive, 32-bit & 64-bit VST/VST3 plugin format for Windows & Mac OS).Sometimes we have such doubts: When we observing the waveform of the crystal oscillator pin with an oscilloscope, the waveform is not visible or the waveform of the oscilloscope is displayed. The plugin will probably also be uploaded to the original product page (on the Smartelectronix website) sometime in the future, but it is only available on Armando’s website at the moment.īy the way, Armando Montanez is also working on another plugin called s(M)asterscope, which expected for release sometime in (hopefully) near future. It is available as a VST and VST3 plugin for use in 32-bit and 64-bit digital audio workstations. The new 64-bit s(M)exoscope can be download completely free of charge from the product page linked below. This means that it can actually be regarded as a bit of an upgrade, in away, as opposed to a 1:1 cross-platform port.
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This is absolutely huge news for all s(M)exoscope users (including myself) who haven’t been able to use their favorite oscilloscope plugin in a 64-bit DAW environment.Ĭompared to the original plugin, the new JUCE ported 64-bit version of s(M)exoscope is virtually identical, apart from the fact the it has a somewhat higher frame rate, resulting in a smoother waveform display. Until now, that is.Īrmando Montanez has ported the plugin’s source code to the cross-platform JUCE framework, making it possible to build both 32-bit and 64-bit compatible versions of s(M)exoscope. See also: Best Free Oscilloscope VST/AU Plugins!īridging 32-bit plugins to 64-bit systems is possible with utilities such as 32 Lives, but that doesn’t change the fact that s(M)exoscope never got a real substitute designed for native use in 64-bit digital audio workstations (apart from a few notable alternatives such as the MOscilloscope by MeldaProduction and Oscarizor by Sugar Audio).