Siglent SDM3065X Was replaced via warranty.. the Initial Siglent SDM3065X Was reading 6-18 mv high and would drift higher with time this one is stable. Siglent Customer service is Excellent.

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The Siglent SPD3303X PSU is a few years old and was calibrated using the procedures in the SPD3303 service manual with a friends Keysight EDU34450A back in July. Seems to be a very stable power supply.

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