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Siglent SPD3303D review
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KungFuJosh:

--- Quote from: lugamodder on September 12, 2024, 01:56:47 pm --- I have an old SPD3303D power supply, which is discontinued but in excellent condition. Firmware version 1.01.01.06R2. "upgraded" to SPD3303S . It has a minor voltage issue on the first channel. Has anyone managed to calibrate the SPD3303D/S? I am using the NI VISA Test Panel and PYVISA lib with the SPD3303X calibration guide https://www.eevblog.com/forum/testgear/siglent-sds3303x(-e)-calibration-fw1-01-01-02-07r2-best-practice/ with no success. The issue is that after executing the commands "*CALCLS 0" and "*CALCLS 1" correctly, the command "CALibration:VOLTage CH1,1,0.8736" is not accepted, and the power supply beeps. I tried downgrading to SPD3303D, changing the number of decimal places, removing and adding different line-ending characters, but without success.  I also tried downgrading the firmware to the only one I found, 1.01.01.03R1, but also without success. The device doesn’t want to update through EasyPower. Has anyone had a successful calibration of such a power supply?

--- End quote ---

I have the SPD3303X and was able to calibrate it. I used the instructions in the older service manual (attached). The instructions were removed in the newer service manual for some reason. Hopefully it will help your situation.
lugamodder:

--- Quote from: KungFuJosh on September 12, 2024, 05:03:10 pm ---
--- Quote from: lugamodder on September 12, 2024, 01:56:47 pm --- I have an old SPD3303D power supply, which is discontinued but in excellent condition. Firmware version 1.01.01.06R2. "upgraded" to SPD3303S . It has a minor voltage issue on the first channel. Has anyone managed to calibrate the SPD3303D/S? I am using the NI VISA Test Panel and PYVISA lib with the SPD3303X calibration guide https://www.eevblog.com/forum/testgear/siglent-sds3303x(-e)-calibration-fw1-01-01-02-07r2-best-practice/ with no success. The issue is that after executing the commands "*CALCLS 0" and "*CALCLS 1" correctly, the command "CALibration:VOLTage CH1,1,0.8736" is not accepted, and the power supply beeps. I tried downgrading to SPD3303D, changing the number of decimal places, removing and adding different line-ending characters, but without success.  I also tried downgrading the firmware to the only one I found, 1.01.01.03R1, but also without success. The device doesn’t want to update through EasyPower. Has anyone had a successful calibration of such a power supply?

--- End quote ---

I have the SPD3303X and was able to calibrate it. I used the instructions in the older service manual (attached). The instructions were removed in the newer service manual for some reason. Hopefully it will help your situation.

--- End quote ---

Thanks, I use almost the same manual but without success, the SCPI command "CALibration:VOLTage " is not accepted by the device in any variations I tried. It seems there are differences between the D/S and X series.
KungFuJosh:

--- Quote from: lugamodder on September 14, 2024, 03:16:00 pm ---Thanks, I use almost the same manual but without success, the SCPI command "CALibration:VOLTage " is not accepted by the device in any variations I tried. It seems there are differences between the D/S and X series.

--- End quote ---

It was finicky. I looked, but unfortunately I couldn't find my notes on what worked beyond that manual.
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