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What instrument to use when measuring resistance on a circuit that cannot tolerate a lot of measurement voltage or power?

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Hello, out lab is using the MS058 OScope to measure the drain to source voltage on an LLC converter with a front end PFC circuit. We are seeing some discrepancy in our measurements when using two different probes. I was hoping to get some advice on this topic. The summary of the two probes is below:

- using a TIVH05L IsoVu probe with the SQPIN 500X tip the turn off VDS measurements show the voltage overshoot to be ~500V.

- using a THDP0200 the measurements are showing significantly higher overshoot voltages (~650V).

Any recommendation on which measurements are accurate and what explains the discrepancy between the two measurements?

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Hi,

I'm doing a study on including DMM6500s in an automated test equipment application to replace manual test procedures. Our current procedures use a clamp on current probe to trigger a o-scope when a DC inrush current rises above a specific level. I'm trying to see if the DMM6500 can be used in place of this current probe and have the following questions:
- Can you set the digitizing current function on the DMM6500 to trigger on the rising edge of a user-input threshold current?
- Would this waveform trigger generate a signal on the trigger output signal on the rear panel of the DMM6500?
- What's the time delay between the waveform trigger and the rear panel trigger output?
- Can the DMM be configured to perform this function using SCPI commands?
- Can the digitized buffer be read into a workstation using SCPI command?

Thank you,
Jeff