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.
250
questions
2
votes
1
answer
196
views
Why is the frequency response from my 1X and 10X probe seem to be converging with increasing frequency?
I'm a Mechanical Engineer trying to get into electronics so please excuse my lack of understanding.
I'm feeding a 5.0 Vpp sine wave into my SDS 1202X-E scope from my signal generator (see image below)....
- 21
2
votes
1
answer
225
views
How can I check continuity longer than my probes?
I'm trying to sleuth out a wrongly wired connection on a small injection molding machine. I'm starting by verifying the connections match the diagrams from the manufacturer. However, some of the ...
- 125
0
votes
0
answers
3k
views
Constructing a redox probe using an Arduino
I'm trying to design an ORP that can be used to measure the total voltage of a solution. This solution would be a NaCl solution that's mixed with water that can be anywhere from 0 to 5000 ppm of NaCl.
...
0
votes
1
answer
92
views
Difference in voltage level using different probes [closed]
I have used an active probe and a passive probe to do the same measurement at the same site. However, the active probe has measured a lower voltage than the passive probe under DC coupling measurement....
- 31
4
votes
3
answers
255
views
How should I store my oscilloscope and probes
What are the best practices for storing an oscilloscope and probes?
Should the probes be disconnected after use, etc.?
1
vote
1
answer
449
views
Oscilloscope probe attenuation setting
I am trying to use a differential probe that has attenuation setting of 50X and 500X. However, my oscilloscope only has 1X, 10X, 100X, and 1000X. Would it cause any issue if there's a mismatch between ...
- 57
2
votes
1
answer
205
views
Sampling 24V one wire serial with a voltage divider?
I would like to sample 24V one wire serial with a voltage divider, wouldn't grounding the resistors in series potentially affect the data being transmitted?
I was considering using an optocoupler but ...
- 263
3
votes
2
answers
638
views
Trying to get a replacement set of probes for an old multimeter
Summary:
I am looking for the correct terminology to describe probes from an obsolete multimeter so that I can use this information to find replacements myself.
I am not asking for specific ...
- 273
6
votes
2
answers
230
views
How are 500 MHz standard passive probes tested?
I would like to understand how a standard passive probe is said to have a bandwidth equal to 500 MHz. Actually what is the standard setup to qualify a passive probe?
I found an article on Teledyne ...
- 2,478
0
votes
1
answer
1k
views
What is the difference between a differential probe isolated and a differential probe non isolated?
The classical differential probe are non isolated. But it also exist differential probe that are isolated.
What is the interest of isolated differential probe with respect to a non isolated ...
- 2,478
2
votes
1
answer
380
views
E field probe or H field probe to detect
I have a board that is failing radiated EMC tests. There are narrowband spikes with 50 MHz intervals (300 MHz, 350 MHz, 400 MHz, etc.)
I believe it has something to do with a clock (I suspect so since ...
- 131
3
votes
2
answers
181
views
Measurement with High Voltage Differential Probe
I am doing a measurement with this a 100 MHz high voltage differential probe with voltage derating. As per datasheet of TT-SI 9110 probe, the derating curve looks like below.
What impact this voltage ...
- 347
0
votes
3
answers
135
views
What is the probe comp signal on a Keysight DSOX2004A?
I was trying to measure a WS2812 signal on my Keysight DSOX2004A oscilloscope. The signal didn't look right for one probe. The rectangular signal looked undercompensated. Sure enough, I know that ...
- 1,049
1
vote
0
answers
75
views
How to extract parasitic capacitance of an oscilloscope?
Can someone please explain the procedure to extract the parasitic capacitance of an oscilloscope? I have seen that the contribution of probe capacitance is 3.9 pF. The scope is a Tektronix 3 series ...
- 31
0
votes
2
answers
461
views
What is the common-mode range vs the differential-mode range of a differential probe?
A differential probe has a differential-mode range of 5000 Vrms and a common-mode range of 2500 Vrms for its input voltage.
What does that mean, and what are the differences between common-mode vs ...
- 105