why we need differential probes? - All About Circuits Hi all I know we need differential probes for differential voltage measurements and single-ended for ground referenced voltages But I couldn't find any resource that explains why it is like that Maybe it is so simple but I can't see the reason Another thing that I want to ask is, can we
Taking measurements with an oscilloscope | All About Circuits If you don't have a differential probe, but have a two channel scope, you can make the same differential measurement using two identical probes The probe tips are connected to the points to be measured The ground clips are connected to circuit ground With both channels set to the same gain, set the vertical amplifier mode to A-B
isolation - Why are there so few oscilloscopes with dedicated isolated . . . Why are there so few bench osilloscopes with dedicated isolated channels? Is it a design issue, a cost issue, a business issue or is it just better with differential probes? It is a cost (price) and demand issue Most users don't need isolated inputs Most users have ground-referenced signals so a scope with non-isolated inputs is OK Cost is an issue as isolated inputs require more complex
How to Probe in a Noisy Environment | All About Circuits I am interested to know how members go about probing relevant nodes in power electronic circuits Conventional scope probes suffer from very long ground leads which pick up a lot of noise and add a lot of inductance to the path I recall a technical article on here about placing SMA connectors
How do I measure differential signals (like RS-485 or DMX) on an . . . The reason you can't measure differential signals quite as easily with an oscilloscope has to do with the fact that oscilloscopes are (generally) floating The ground lead on the probes are connected to the oscilloscope chassis, which in turn is earth grounded Because of this, anything you connect the ground lead to will also be connected to earth ground (As videos I link below demonstrate
Measuring mains in an oscilloscope | All About Circuits Have you considered a voltage divider ? Some big resistors ? Why do you need differential probe ? Do you have two probes traces , can you display the difference between the two traces ? When testing mains connected systems with a mains powered scope there is a serious need oof isolation required
Measuring 240v 3-phase circuits with an oscilloscope I use a LeCroy PPE4kV high-voltage probe, which it seems has been obsoleted and replaced with the and the , both 100× probes rated to 6 kV peak For measuring phase to phase voltages without a fancy isolated oscilloscope or isolating the equipment, you need a differential probe
Advice oscilloscope for (mainly) floating measuring - All About Circuits Using two probes to make two single-ended measurements, as shown in Figure 2 4a is an often used method It’s also usually the least desirable method of making differential measurements Nonetheless, the method is often used because a dual-channel oscilloscope is available with two probes