Products > Test Equipment
Siglent SDL1000X/SDL1000X-E Electronic Load
CM:
I am using an Agilent E3633A to supply power. I am measuring voltage at the terminals of the SDL using a calibrated Agilent 34401A 6.5 digit multimeter. I'm about 3% off at all voltages I've tested. The specification for voltage is +/- 0.02% + 0.05% FS, so that strikes me as way off.
tautech:
--- Quote from: CM on August 06, 2024, 09:47:09 pm ---I am supplying power to the load by an Agilent E3633A power supply. I am measuring voltage at the SDL input terminals using a calibrated Agilent 34401A 6 1/2 digit multimeter. I'm about 3% off on all the voltages I've tested. The specification for voltage accuracy is +/- 0.02% +0.025%FS._At no input, the SDL still shows .003V.
--- End quote ---
So will a sensitive DMM in a noisy lab.
Test with a input short.
https://int.siglent.com/u_file/download/23_04_12/SDL1000X%20Series%20Service%20Manual_E01B.pdf
CM:
I have retested by shorting the inputs. Still shows 0.003V. Seems off to me. Thank you for providing version E01B of the service manual. While it provides the verification procedures, I'm kinda disappointed that Siglent no longer provides the calibration procedures.
Martin72:
--- Quote --- I'm kinda disappointed that Siglent no longer provides the calibration procedures.
--- End quote ---
Because it is not very easy and had caused more problems than results, it was consequently withdrawn.
I personally do not trust the displayed values of loads and supplies for professional reasons alone and would always use "correct" meters for current and voltage measurements.
tautech:
--- Quote from: CM on August 06, 2024, 10:01:25 pm ---I have retested by shorting the inputs. Still shows 0.003V. Seems off to me. Thank you for providing version E01B of the service manual. While it provides the verification procedures, I'm kinda disappointed that Siglent no longer provides the calibration procedures.
--- End quote ---
In which modes ?
See datasheet for accuracy qualifications.
https://int.siglent.com/u_file/download/24_06_06/SDL1000X_DataSheet_DS0801X-E01F.pdf
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