All Questions
Tagged with probe differential
14
questions
4
votes
2
answers
304
views
Why am I seeing a signal on a shorted differential probe?
I am chasing the cause of some weird microcontroller resetting behaviour in a prototype robot. As part of the debugging, I decided to look at the stability of the power supply for the MCU.
I soldered ...
- 27.5k
0
votes
0
answers
253
views
Oscilloscope "isolated" inputs
As I don't want to see my oscilloscope go up in flames when I play with probing circuits, I was wondering the following:
First off, my goal is to measure different floating voltages aka the "GND&...
- 47
1
vote
3
answers
188
views
What is the point of the following capacitors?
Sorry if this question is dumb, I'm still a student...
Anyways, I was looking at a design of a high voltage differential probe on the web and was wondering what is the purpose of the capacitors seen ...
- 19
5
votes
2
answers
2k
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Differential probe input impedance 1Meg, but 50ohm oscilloscope mode recommended
I will be experimenting with the Keysight company's N2792A differential probe.
Looking at the datasheet of the probe, the input impedance is 1Meg, but it is said to be used with the 50ohm impedance ...
- 119
2
votes
1
answer
466
views
Attenuation in the circuitry of differential vs isolated probes
Using this website as a reference for differential probes:
https://circuitcellar.com/research-design-hub/high-voltage-differential-probe/
By Andrew Levido, Circuit Cellar
The differential probe is ...
- 56.9k
0
votes
1
answer
116
views
Can a differential probe and regular coax wire be connected safely to only one channel of scope using a tee connector?
I would like to ask if I can connect a differential probe and a coax wire through a tee connector to 1 channel of an oscilloscope, in order to take different DC measurements.
The connection topology ...
- 71
1
vote
1
answer
189
views
Replacement 100 ohm resistor for differential scope probe? [closed]
I'm trying to use a P7504 ($$$) "TriMode" scope probe, and unfortunately the resistors eventually break. Does anyone have recommendations for a 100ohm resistor that would replace the ones on the probe?...
- 483
0
votes
2
answers
138
views
How to make sense of the signal trace of differential signal
I am trying to understand following signal trace picture that is shown on the wiki page of 1553 Bus. The Bus has balanced differential pair wires.
As the 1553 bus has differential signals on the ...
- 1,479
1
vote
1
answer
271
views
How can I implement a differential input for a logic analyzer probe?
I'm currently working on a project to build a portable logic analyzer. There will be 4 input channels to the design, however I was highly recommended to redesign this using a differential input to ...
- 31
24
votes
2
answers
12k
views
Review request: DIY DC to 50MHz differential oscilloscope probe
Given the cost of proper differential probes, i've decided to make my own. The requirements are:
DC to 50 MHz 3db bandwidth
A few selectable input voltage ranges, from 3V pk-pk to 300 V pk-pk
...
- 8,661
2
votes
1
answer
490
views
Passive probe vs diffential probe
In the image:
Channel 1: Drain to source voltage
Channel 2: gate to source voltage
Channel 3: Switch current
Channel 4: Load current
The image shows Vds of low side MOSFET at turn on measured with a ...
- 155
0
votes
3
answers
449
views
Questions about differential probes
(Q1) Can an active differential probe such as this Agilent N2752A
be used in a single-ended way, i.e., with one of its inputs at the GND of a circuit? Understanding of course, that we have (a) 1/...
- 360
2
votes
1
answer
942
views
Differential measurements with high voltage oscilloscope probes
This interesting post about differential measurements with a scope has raised a few questions in my mind.
I have read about true differential scope probes and they seem to be very expensive. Would ...
- 41
0
votes
2
answers
3k
views
Differential voltage measurement on shunt resistor
I trying to build a simple differential measurement circuit to feed a analog to digital chip to monitor current consumption of a board with an Arduino. So I decided to go with a "traditional" ...
- 163