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Edited by gf1 at 2019-3-10 01:30
Dear Support,
on my 6074BD I notice significant offset errors.
Utility -> Calibration does not eliminate them.
The following image was captured immediately after running "Calibration":
As you can see, CH1 has an offset error of more than 1 div (and at 2mV/div, the error becomes even 2 div).
CH2 and CH4 have some offset error as well. Only CH3 happens to be almost OK (but still a bit off).
Btw, all inputs are terminated with 50 Ohm resistors - no signal present.
Turning the 20MHz bandwidth limit on or off also moves the trace a little but up or down.
The AC/DC switch seems not to affect the offset 
After calibrating all 4 channels, I turned off CH2, CH3, CH4 and switched to a faster timebase of 500 and 200 ns/div. The offset of CH1 did change to than 5 div:
Sotware version 20160628
FPGA version D001
PCB version V1.06
[ I had installed the software from the official product page. Is there any newer versionavaiable? ]
gf1
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Post time 2019-3-10 00:52:35
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Post time 2019-4-27 16:41:28
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