would this be pretty acurate for performing draw tests?
i already have TA496 but the clamp is too small for most battery cables. i also see the non BNC+ 30amp clamp but i like the functionality for auto zero and not needing a bettery
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Open Oct 20, 2026 - 05:47 AM
1answer
Staff Answer
Oct 20, 2026 - 08:55 AM
Yes, the TA408 can be used for parasitic draws.
It is best to plug the clamp into the scope with the software open and let it sit 3-5 minutes before being attached to a circuit. Also, do not use the Guided Test. It is expecting the 60A current clamp and even checking the Run with Probes Found optoins, there still can be problems zeroing.
Source: SA
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100A AC/DC Current Clamp with PicoBNC+ (TA408 )
The Pico 100A AC/DC Current Clamp (TA408) with PicoBNC+ does not require a battery, it is powered by the scope (4225A/4425A) via the PicoBNC+ connector. The PicoBNC+™ enables the PicoScope software to auto-configure itself for the TA408 100A AC/DC Current Clamp when used with a compatible PicoScope ...
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