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  • bgg
    SK
    21/07/2022

    Very basic device, not a real lab instrument. Actually non-inverting input is the inverting one. 🤭 Metal shielding case is not grounded at all. On 100x range is a hughe phase shift and not compensated 50mV DC output offset. No frequency compesation at all, just basic opamp. +- 14.5V switching supply rails for opamp generates a lot of noise, no linear suppl. High figures of output noise in usable range, which is already very narrow. No real manual or measurement graphs available. Disapointed.

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