This model has a hidden menu self adjust/calibration:
(Also applies to models of the SDG2000X series) Utility->System->System Info->Enter Password “123654”->SelfCal
I picked this up out of interest.
When setting sine 1KHz, 1,000V RMS (rest standard) measured the output AC voltage.
Of course, the DMM was not accurate to the fifth digit (it was 1,00208 V).
Now run self calibration.
When it was over, the voltage had dropped to 1,00114 V.
Let run a second time self cal. Then the voltage dropped to 0,99992, the third time to 0,99876...
Ok, the output voltage output is slightly lower with each self cal attempt.
Measured again this morning (FG "cold"), the tension was still lower than at the beginning by the amount of the three cuts from yesterday.
A new self cal with now lower device temp (I had to risk it to test, because the deviation annoyed me) achieved a higher output voltage.
It is (coincidence, the right temperature caught?!?) Almost as before the very first self cal attempt.
Even when it is warm, this is true as with the origin.
A little easier ... to know that you can get it back.
What exactly does the SDG1062X do during self calibration?