| Products > Test Equipment |
| Siglent SDL1030X vs. Rigol DL3031A - Which is better? |
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| TBS:
Thx for the info. I did spec sheet comparison between GW Instek, Siglent and Rigol and at the end I think I am gonna pick the Siglent SDL1030X-E. The stats are not so different, it has lowest price and should have three year warranty. (And I believe that somehow the SDL1030X-E should be convertable to SDL1030X :) |
| HyperSpectral:
The SDL1020X in particular (likely the other models) has some interesting "features". When using the 4 wire mode (separate voltage sense leads), if the voltage sense leads are not connected, the unit will display a voltage that is 80% to 90% of the true voltage. This looks like a proper connection with the source having low voltage. There is no other indication of a fault. The common terminal on the rear terminal strip for connection of external signals (analog control, ext. trigger etc.), is connected directly to the negative load terminal. If such instrumentation is connected, the result could realistically be ground loops, short circuits or electric shock. This could be particularly interesting if the supply under test has a grounded positive output so that the negative output gets grounded through the externally connected equipment. The Rigol does not have these "features", so may be more suitable for advanced applications. |
| dougg:
Just discovered my DL3021 has a horrible current overshoot during the first 20 microseconds when there is a large step in requested current, say from 0 to 5 Amps. Measured a peak of 8.56 Amps which was tripping out a DC-DC converter that I was testing. Rigol seem to acknowledge this problem: https://rigol.force.com/support/s/article/How-to-reduce-overshoot-in-DL3000-series-CC-mode-in-battery-testing ... but their solution doesn't help in my case. Could someone with a Siglent SDL1030X and a 'scope with a current probe do a similar test? I set my RD6018 at 8 Volts with a current limit of 15 Amps. |
| dougg:
--- Quote from: dougg on November 07, 2022, 12:14:58 am ---Just discovered my DL3021 has a horrible current overshoot during the first 20 microseconds when there is a large step in requested current, say from 0 to 5 Amps. Measured a peak of 8.56 Amps which was tripping out a DC-DC converter that I was testing. Rigol seem to acknowledge this problem: https://rigol.force.com/support/s/article/How-to-reduce-overshoot-in-DL3000-series-CC-mode-in-battery-testing ... but their solution doesn't help in my case. Could someone with a Siglent SDL1030X and a 'scope with a current probe do a similar test? I set my RD6018 at 8 Volts with a current limit of 15 Amps. --- End quote --- Forgot to mention the slew rate was 1 Amp per microsecond. The issue is masked (with the above parameters) when the slew rate is reduced to 50 mA per microsecond. |
| TopQuark:
--- Quote from: dougg on November 07, 2022, 12:14:58 am ---Just discovered my DL3021 has a horrible current overshoot during the first 20 microseconds when there is a large step in requested current, say from 0 to 5 Amps. Measured a peak of 8.56 Amps which was tripping out a DC-DC converter that I was testing. Rigol seem to acknowledge this problem: https://rigol.force.com/support/s/article/How-to-reduce-overshoot-in-DL3000-series-CC-mode-in-battery-testing ... but their solution doesn't help in my case. Could someone with a Siglent SDL1030X and a 'scope with a current probe do a similar test? I set my RD6018 at 8 Volts with a current limit of 15 Amps. --- End quote --- SDL1020X-E (hacked to 1030), 2.5A/us, 0.1A to 5A, power supply is RD6018. Looks fine to me |
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