power supply - 100MHz noise filter doesn't attenuate much
2018年1月5日 · Unfortunately my 3 filtering attempts don't attenutate the noise very much: Inductor circuit. Feedthrough capacitor circuit. Ferrite bead circuit. (Based on datasheet, Zferrite = 2000ohms @ 100MHz.) Here's a picture of the ferrite bead circuit and a scope shot (NoiseIn=yellow, NoiseOut=green), for example:
FNIRSI-1013D "100MHz" tablet oscilloscope - Page 101 - EEVblog
2024年10月12日 · Re: FNIRSI-1013D "100MHz" tablet oscilloscope. It is not about signal noise, but audible noise. When you reduce the brightness the backlight driver is pulsed with a PWM signal that has a carrier frequency somewhere around 800Hz. This …
Why is Cat5/Cat5e Ethernet cable rated 100MHz?
2015年7月30日 · no, it only means the bandwith of ethernet cable (cat5 [e] actually) is rated for 100MHz). That is totally independent to whatever you actually run through it. – PlasmaHH. Jul 30, 2015 at 12:17. Add a comment. Add a comment. Add a comment. Add a comment.
Oscilloscope bandwidth - is jump from 100MHz to 200 MHz
2018年3月2日 · Most "high" impedance *10 scope probes with a 6"/15cm ground lead self-oscillate at ~100MHz. A 200MHz scope will show you that, but a 100MHz scope will disguise it At such frequencies construction techniques and probing techniques become important. Logged. There are lies, damned lies, statistics - and ADC/DAC specs.
FNIRSI-1013D "100MHz" tablet oscilloscope - Page 75 - EEVblog
2024年1月26日 · Re: FNIRSI-1013D "100MHz" tablet oscilloscope. Change sample rate, to increase the visible bits of the DS3231 i2c bus. The original firmware cannot do that. FNIRSI 1013D Always provide a picture or video with the problem where the parameters of the oscilloscope are visible, and a picture of the diagnostic screen with the values.
How to compute clock cycle time from given frequency
2019年12月31日 · I know that Frequency = 1 / Clock Time but I am having trouble to fully understand how to manually convert it for example, to a nanosecond, given the frequency. Thanks! Frequency = 1 Clock time Frequency = Clock time. Clock time = 1 Frequency Clock time = Frequency. Clock time = 1 Frequency = 1 100 MHz Clock time = Frequency = 100 MHz.
FNIRSI-1013D "100MHz" tablet oscilloscope - Page 80 - EEVblog
2024年2月21日 · Re: FNIRSI-1013D "100MHz" tablet oscilloscope. This is a feature, the second option is to turn it off. (I decided to let the user set the limits and then turn on the sampling. (there is not enough time to sample and render the entire …
FNIRSI-1013D "100MHz" tablet oscilloscope - Page 18 - EEVblog
2020年9月6日 · Re: FNIRSI-1013D "100MHz" tablet oscilloscope. When run it asks for a filename; enter the root filename of a wav file (e.g 9 for 9.wav). It will produce json file (9.json) containing the buffer and display data plus settings for the capture. …
Why would a 150 MHz probe work fine for a 100 MHz oscilloscope?
2015年12月22日 · In the end, you will have filtered the signals over 100MHz anyway, so no big diference with using a 100MHz probe. In the other hand, if you use a probe with lower bandwidth, then it will determine the bandwidth of your input filter, and you will have less bandwidth in …
How to choose MLCC cap values for power supply decoupling?
2016年5月16日 · The 100MHz noise is associated with the switch-node ringing resulting from the parasitic inductances and capacitances. What should I look for in an MLCC that would best filter out this 100MHz noise as much as possible? I already have 10uF and 0.1uF caps, and considering adding a 3.9nF cap.