Using near-field probes to assist in troubleshooting a PCB
In this little demonstration, I'm hooking up a set of near-field probes to my oscilloscope to demonstrate how they can assist in troubleshooting a motherboard for a computer.
Near-field probes are often used together with a spectrum analyzer for EMI precompliance testing and such, but that doesn't mean that they cannot be used for troubleshooting in the time domain as well.
Two examples of how near-field probes can be used in the time domain are shown in this video.
The first example involves investigating whether or not all parts of a motherboard seem to receive power. This can be very useful, since loss of power to a certain part of a circuit or a single chip can be quite a common cause of failure.
In the second example, I show a rather quick way of pinpointing the offender of a glitch or runt pulse that might be appearing on a certain signal by looking for coincident events in the time domain.
Видео Using near-field probes to assist in troubleshooting a PCB канала RetroGameModz
Near-field probes are often used together with a spectrum analyzer for EMI precompliance testing and such, but that doesn't mean that they cannot be used for troubleshooting in the time domain as well.
Two examples of how near-field probes can be used in the time domain are shown in this video.
The first example involves investigating whether or not all parts of a motherboard seem to receive power. This can be very useful, since loss of power to a certain part of a circuit or a single chip can be quite a common cause of failure.
In the second example, I show a rather quick way of pinpointing the offender of a glitch or runt pulse that might be appearing on a certain signal by looking for coincident events in the time domain.
Видео Using near-field probes to assist in troubleshooting a PCB канала RetroGameModz
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