TCP 202A probe connection to MSO2024B using a TPA-BNC adapter



User, Forum
Posted Wed, 28 Sep 2022 22:30:55 GMT by User, Forum

I'm using a benchtop variable DC power supply operating in constant current short circuit mode, and a DMM measuring the current. Is it technically feasible to use a TCP 202A current probe connected to a MSO2024B using a TPA-BNC adapter, with 12V DC @1.5 ADC?

Answer
Expert, Tektronix Applications
Posted Wed, 28 Sep 2022 22:35:56 GMT by Expert, Tektronix Applications

No, the TCP202A needs to use the 1103 probe power supply and a 50Ω terminator instead of the TPA-BNC adapter. This is due to the TCP202A being designed for a 50Ω termination instead of the MSO2kB 1MΩ termination.

If you switch to connecting the TCP202A to a 1103, then have a 50Ω termination between the 1103 and the scope it will resolve the issue. Note, you will need to manually configure the channel to support this setup

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