Power Supply: SPD3303X vs  DP832A vs ??? - Page 1
Forum section: electronics / testgear

author: Plasmateur
author_rank: Regular Contributor
timestamp: August 10, 2019, 05:52:48 pm
content: I'm looking to purchase a power supply soon and I'm trying to find out what the best deal is for the $600 range.I'm not sure if the Rigol DP832 can be hacked to a DP832A or if the siglent SPD3303X-E can be hacked to a SPD3303X.If so, then the prices on these units would come down quite a bit. I'm looking at these particular units because they offer the 1mV/1mA resolution. I would prefer and even finer resolution, but I think anything in that range might cause the costs to go up out of my range.Does anyone here have a preference between these two units? For me, the Siglent looks nicer (which shouldn't matter) and I've had an easier time programming Siglent equipment with respect to Rigol. The spec sheet of the rigol unit claims it can go just a bit higher on the max volts and current. The Siglent's third channel also seems to offer different voltages while the Rigol is just a hard 5.5V.Or perhaps there is another programmable power supply offered by a different manufacture that I should also consider? I included some information about these devices below.SPD3303X DC -http://www.saelig.com/siglent-power-supplies/spd3303x.htmPrice: $539Code:min/max min/max Vres IresCH1- V:0-32 I:0-3.2 1mV 1mACH2- V:0-32 I:0-3.2 1mV 1mACH3- V:2.5/3.3/5 I:0-3.2DP832A -http://beyondmeasure.rigoltech.com/acton/attachment/1579/f-01c9/1/-/-/-/-/file.pdfPrice: $840Code:min/max min/max Vres IresCH1- V:0-33 I:0-3.3 1mV 1mACH2- V:0-33 I:0-3.3 1mV 1mACH3- V:5.5 I:0-3.3

author: maginnovision
author_rank: Super Contributor
timestamp: August 10, 2019, 05:56:58 pm
content: They can both be hacked. The biggest differences are UI, 3rd channel on Rigol is not isolated from 2nd channel(share a ground), and siglent is not as flexible on 3rd channel. Unlike what you think it's got the same configuration as other 2 channels. Configure voltage, current, ovp, ocp, and full data visible on screen. For me it ended up coming down to the fact that I prefer to have the numeric entry keypad on the Rigol.

author: BillB
author_rank: Unknown
timestamp: August 10, 2019, 05:58:51 pm
content: There are several threads here discussing these supplies.https://www.eevblog.com/forum/testgear/basic-power-supply/The lower models from both manufacturers can be hacked, and there are pros and cons for each unit.

author: Plasmateur
author_rank: Regular Contributor
timestamp: August 10, 2019, 07:17:48 pm
content: Quote from: maginnovision on August 10, 2019, 05:56:58 pmThanks! The numeric keypad won't be an issue for me because I plan to control the unit remotely. Good to know about the 3rd and 2nd channel on the Rigol unit.

author: maginnovision
author_rank: Super Contributor
timestamp: August 10, 2019, 08:50:09 pm
content: Yea, if you don't care about physical controls you basically just have to decide between isolated channels for 2-3, and if you need the more flexible 3rd channel of the Rigol.

author: tautech
author_rank: Super Contributor
timestamp: August 10, 2019, 10:37:45 pm
content: @PlasmateurFYIhttps://www.eevblog.com/forum/testgear/siglent-ads-firmware-file-format/msg1830584/#msg1830584