All Questions
Tagged with probe oscilloscope
131
questions
0
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1
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71
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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 ...
- 1,029
6
votes
4
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746
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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 ...
- 1,029
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81
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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 ...
1
vote
4
answers
72
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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 &...
- 315
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52
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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 ...
- 3,032
1
vote
0
answers
88
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Why are there (almost) no current shunt probes?
Most of the current probes for osciloscopes I can find are somehow magnetically coupled and have a high isolation and price.
However, in PCB design shunt resistors are often used.
Why does one not ...
2
votes
1
answer
196
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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
0
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1
answer
92
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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
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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
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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
0
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1
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1k
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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
3
votes
2
answers
181
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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
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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
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0
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75
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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
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2
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461
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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