Max Transient Voltage

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RSB
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Joined: Thu Jun 14, 2018 9:39 pm

Max Transient Voltage

Post by RSB »

Hello,

I'm considering the purchase of a 2204A picoscope. I understand that with the x1 probe, the maximum is +/- 20V.

Does the 2204A come with selectable x1 / x10 probes? If so, I assume that means that I can measure +/- 200V when set on x10? I'm not going to use it to measure mains voltage, I'm more interested in transient events (like the alternator load dump that is present when using the kill switch to shut down our race car motor).
I would expect it to be around 100V for maybe 400msec.

Does the scope automatically recognize that the probe is set to x10 and display the correct amplitudes on the screen?

Gerry
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Re: Max Transient Voltage

Post by Gerry »

Hi RSB,

The PicoScope 2204A does come with a x1 / x10 switchable Probe, if selected at time of purchase, which will allow you to measure +/-200V on the higher setting.

You say that you are going to measure 100V. Is that peak, peak-to-peak, or RMS voltage?

Our PicoScope 6 software provides 'Custom Probes' that will automatically correct the amplitude scaling on the screen for Probes that scale the voltage, and one of the custom Probe options is x10.

Regards,

Gerry
Gerry
Technical Specialist

RSB
Newbie
Posts: 0
Joined: Thu Jun 14, 2018 9:39 pm

Re: Max Transient Voltage

Post by RSB »

Hi Gerry,

Thanks for the quick response.

The voltage I plan to measure is peak (relative to ground). So, it sounds like the 2204A with the x10 probe will satisfy my needs.

Given the 10MHz bandwidth, what should be my expectation for the shortest duration transient that I could reliably measure?

Ray

Gerry
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Joined: Mon Aug 11, 2014 11:14 am

Re: Max Transient Voltage

Post by Gerry »

Hi RSB ,

The sample rate of the PicoScope 2204A is 100MS/s, while the Analog bandwidth is 10MHz, so the shortest duration impulses that you would be able to accurately measure, would be those with a rise and fall time of no faster than 35 nS (10%, 90%).

Regards,

Gerry
Gerry
Technical Specialist

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