Products > Test Equipment

Wires connected without banana to binding posts (Rigol DP832 power supply)

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watchmaker:
Whenever I see poor workmanship, I look further.  I learned this restoring watches where even a damaged screw raises my antenna.

If the binding post source let that kind of machining pass, what else did they accept?  We know they accepted a lousy design that ignored the washer under the knob and the lower shoulder set too deep.  What about the "unseeable".

Reminds me of the 70s/80s machine tools out of Taiwan. They were basically "Kits" the end user finished to their own standards.

RoGeorge:
There certainly are other hidden flaws in this model, to enumerate a few:
- a radiator too small in the first version (mine is already the version with a bigger radiator)
- faulty internal wiring of the GND between channels 2 and 3 (this is mostly noticeable at high current)
- the faulty twisting of force and sense wires
- binding posts out of tolerance
- noisy fan
maybe a couple of software bugs, too, to name only a few.

Though, given its price (~$600 new, in 2015), the fact that I never needed to use it at full power, and that it was possible to unlock the mV/mA resolution together with all the other SCPI and software features made it a decent power supply.

Here, in EU, the choice of second hand lab instruments is very limited when compared with what is available on ebay USA.

coppercone2:
I took a picture so people take the warning seriously

there is a soldered wire hook banging almost into the chassis on the back of this


--- End quote ---


Sure age has something to do with this, but I noticed, cheap parts with flaws seem to age alot faster

and as I mentioned in the other thread, I had a plastic cap fall off a cartridge fuse panel mount slot, leaving a big mains wired contact on the back of the chassis.

I say, never hesitate to replace suspicious hardware if it has anything to do with the outside of the machine. If your ground is good the inside is not gonna do anything too bad. But anything that can get out side of that shield needs to be dealt with.

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