Products > Test Equipment
Siglent SDL1000X/SDL1000X-E Electronic Load
Mortymore:
The I/V BNC monitor outputs range from 0 to 10V and that poses some challenge to get meaningful numbers, since my scope only allows to set attenuation steps of 1, 2 and 5.
Test conditions: PSU SPD3303X-E output timed steps / LOAD SDL1020X-E set to CC 1A (I:5A, V:36V)
Oscilloscope IDS-2074E
CH1 (yellow): set to current probe, 0.5X attenuation, measuring current
CH2 (cyan): set to voltage probe, 1X attenuation, measuring voltage but 3.6x lower
Math (red): Measuring Power with function CH2*3.6*CH1 (CH1 Measured directly with factor 0.5x already corrected from CH1 input attenuation, but the ratio for CH2 had to corrected to 3.6x in the math channel)
If the scope had an attenuation input that could be freely set by user, it would be just a matter of setting the needed ratio. Then the CH2 in the example would reflect the real voltage and the Math channel would just multiply CH1*CH2 to calculate Power (given it's purely resistive)
EDIT: For a photo, check a previous post with a similar setup, but there the source was a SLA battery instead of the PSU used here
Johnny B Good:
Just 18 days ago, I posted that I'd ordered a set of 4mm banana socketed binding post nuts from :-
https://www.aliexpress.com/item/1005005474135340.html
The package turned up this morning, a mere 18 days later (about a month ahead of their delivery schedule!). Unfortunately, the items didn't entirely match the given description so I've had to request a refund/return from the seller.
The problem being that just like all other sellers' photographs and the brief descriptions of "M6*60 binding post 6mm pure copper flat cap terminal 4mm hole banana socket", these had a hidden 'extra', namely that whilst the external binding post studs (and their coloured nuts)'s threads were M6 the thread pitch was 0.75mm (fine threaded) making them useless as replacement banana jack adapter nuts.
Unfortunately, there aren't any sellers on Ebay selling any variety of these "M6*60 binding post 6mm pure copper flat cap terminal 4mm hole banana socket" kits, leaving me no choice but AliExpress if I want to avoid being 'scalped'. So once more it was another deep dive into AliExpress's web site to try and track down another seller that could offer some clue that their versions complied in full with the description "M6*60 binding post 6mm pure copper flat cap terminal 4mm hole banana socket" with no hidden (and unwanted) extras like "6mm fine threaded binding post nuts".
After a surprisingly short search, I chanced upon this seller;-
https://www.aliexpress.com/item/32793961677.html?spm=a2g0o.order_list.order_list_main.4.1b601802PhPHdo
which revealed in a short video (incompatible with Opera but firing up my despicable Firefox excuse for a web browser overcame that obstacle) that the threads at both ends were quite obviously the standard M6 1mm pitch thread That was another seller whose page I now can't relocate. I guess it must have this image (last attachment) which prompted me to buy from this seller. Better yet, they were even cheaper (£1.05 each +VAT). I ordered a couple (red and black) for a total delivered price of just £4.83 (£1.80 less than I'd paid for the first lot).
The take away from my experience with AliEpress sellers and these "M6*60 binding post 6mm pure copper flat cap terminal 4mm hole banana socket" kits for anyone contemplating the "4mm banana socket upgrade option" is that you need to ensure that what you see as a 'tried and tested solution' isn't hiding the presence of a 6M fine threaded stud binding post terminal. It would seem that your best chance of seeing a more revealing view lies in any movie clips the seller may be offering.
And, BTW, has anyone managed to discover the actual OTP trip temperature on these SDL1000X electronic loads yet? >:D
BillyO:
I got mine from these guys: https://www.aliexpress.com/item/4000179697145.html
They worked like a charm.
Johnny B Good:
Thanks Bill,
If I hit the same issue with this second lot, the link you posted should make it "Third time lucky" :)
BillyO:
Hope you get the right ones this time:
Here is a picture of mine. They have the same thread on both ends and it fits the Siglent.
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