Questions tagged [probe]
A physical device used to connect an electronic instrument (such as an oscilloscope) to a circuit in order to measure quantities such as voltage, current, temperature, etc. Use in conjunction with related tags such as "oscilloscope", "voltmeter", etc., as applicable.
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Driving 50 Ω coax cable for doing measurements with oscilloscope
This is a follow up question to Using 50 Ω coax cable instead of passive probe.
In the linked question I asked whether it would be possible to use a 50 Ω coax cable instead of the passive probe for ...
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Using 50 Ω coax cable instead of passive probe
Preface, why am I asking this question?
Instead of using a passive probe with a ground clip, I want a more "permanent" and reliable connection for my measurements. Note: I'm not talking ...
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Near-field probe market recommendation [closed]
I'm planning to use a near-field probe for pre-EMC testing of my power PCBs, including AC/DC and mixed-signal designs. My goal is to identify potential emission issues before sending them to official ...
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Looking for a short sharp pin [closed]
I'm looking for a short pin with a sharp point, to be used for probing a circuit. Similar to a scope probe tip, but for a dedicated custom PCB.
Ideal length of <5mm, diameter of <1mm, solderable....
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Circuit works only when oscilloscope probe is connected and does not work otherwise
I have built the circuit shown below.
The problem is that the circuit only works when I connect oscilloscope probes between node-A and the ground.
If I remove or decouple the probe-ground from the ...
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Why is my oscilloscope math mode showing an RMS voltage in gigavolts (unexpectedly high value)
I'm experiencing an issue with my Rigol DS1202 oscilloscope. When using the math function to measure the RMS voltage of the difference between two channels (A - B), the RMS value is displayed in ...
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Can differential probes be used with floating oscilloscopes, such as handheld/tablet scopes?
I am in the market for a differential probe (and possibly a handheld oscilloscope down the track for field work). One seller I came across has a warning for many of the probes that they sell saying &...
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Two-point probe volume resistance how to measure without guard?
So I have measured the surface resistance of a highly insulative material using a Megger MIT 420/2 and a two-point probe. But how would I go about measuring volume resistance? The Megger has no guard ...
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What type of probes are used to connect to plated-through-holes without soldering a pin into the socket? [duplicate]
Are there probes that are designed to insert snugly into 40-mil holes (about the size of those needed by a DuPont connector)?
I am thinking of something that looks like a banana plug with springs on ...
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My sourcemeter lets me do a four probe connection using banana connectors or tri-ax. What do the extra lines on the tri-ax do?
The Keithley 2450 sourcemeter has two ways you can do a 4-probe measurement: in the front there are four banana connection ports labeled SENSE HI, SENSE LO,FORCE HI, and FORCE LO. In the back, there ...
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What could be the possible reason for waveform distortion while connecting differential probe GND with single ended probe GND?
I am measuring following waveforms using a DSO:
Case 1:
Waveform 1 wrt GND using differtial probe.
Waveform 2 wrt GND using single ended probe.
Result 1: Waveform 1 distorted.
Case 2:
Waveform 1 wrt ...
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Multimeter Range and Resolution
I'm confused as to how my multimeter takes readings, especially since its not an auto-range multimeter. I have to switch to the desired range to carry out measurements. Unfortunately, the resolution ...
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Should Liquid Level Sensors be supplied AC or DC
Liquid level sensors often use two probes, when the resistance between those two probes changes with reference to the level of the liquid between them, that change is resistance is read as change in ...
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How to debug a STM32 MCU Discovery board at higher rates?
I have a STM32H735G-DK Discovery board, and can debug it with gdb (or vscode and cortex-debug). However, it is very slow - hitting s in gdb can take several ...
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Z0 (resistive) high bandwidth, probe design
I plan to make a high-speed resistive probe according to the book "High-speed digital design: A Handbook of Black Magic". There is one thing I don't understand there:
Why this probe (unlike ...
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