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Like oscilloscopes, can other pieces of bench test equipment create ground loops
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Topic: Like oscilloscopes, can other pieces of bench test equipment create ground loops (Read 748 times)
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ballsystemlord
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Like oscilloscopes, can other pieces of bench test equipment create ground loops
«
on:
May 19, 2023, 12:52:04 am »
Like oscilloscopes, can other pieces of bench test equipment create ground loops?
Like bench-top DMMs, LCR meters, DC power supplies, and load banks?
Thanks!
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tautech
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Re: Like oscilloscopes, can other pieces of bench test equipment create ground loops
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Reply #1 on:
May 19, 2023, 01:23:22 am »
Bench DMM's, no.
Otherwise pretty much any instrument with a grounded BNC connector one must be wary how they use it.
Some DC supply's need be watched too as outputs are not always isolated.
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David Hess
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Re: Like oscilloscopes, can other pieces of bench test equipment create ground loops
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Reply #2 on:
May 19, 2023, 01:44:57 pm »
Power supplies usually have floating outputs, but not always.
Most other instruments with BNC connectors will create ground loops, but there are some exceptions. For instance some function generators have a galvanically isolated output.
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jonpaul
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Re: Like oscilloscopes, can other pieces of bench test equipment create ground loops
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May 19, 2023, 02:10:52 pm »
Wrong assumptions, so title makes little sense.
Check your def of "ground loops"
j
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David Hess
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Re: Like oscilloscopes, can other pieces of bench test equipment create ground loops
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Reply #4 on:
May 19, 2023, 02:51:38 pm »
Below shows an example of a pulse generator which makes some attempt to minimize ground loops. The shell of the output connector is isolated from the chassis.
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