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| Siglent P510 Probes - Junk or bad luck ? |
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| tautech:
--- Quote from: bdunham7 on September 15, 2023, 01:46:23 pm --- --- Quote from: tautech on September 15, 2023, 04:34:55 am ---We have failures with these too. --- End quote --- I'm 12 for 12 with the PP215. Now if they would just make a PP215 without the switch, that would be a truly worthy product IMO. A readout pin for the SDS2000X+ would make it outstanding. --- End quote --- Next class of probe are these, compensation on the BNC and probe is in of a more compact design: https://siglentna.com/product/sp2035a-auto-sense-350-mhz-oscilloscope-probes/ Standard probe for SDS2354X Plus and 2kX HD. |
| Doctorandus_P:
So apparently a loose PCB in the probe is a common problem and they send you a replacement when you send them a picture of a faulty one. So that solves most of it. For the rest, if the PCB inside the probe moves, then just drill a hole through the outer shell of the probe and inject some hot glue to fixate the PCB. (Of course after you've received confirmation you get a new probe). As for the probe switch. Sure you can do low frequency stuff with the switch set to 1:1, and it lowers the noise floor, as there is less amplification in the scope, but you can do that with any wire. |
| TomKatt:
--- Quote from: Doctorandus_P on September 16, 2023, 12:39:04 pm ---As for the probe switch. Sure you can do low frequency stuff with the switch set to 1:1, and it lowers the noise floor, as there is less amplification in the scope, but you can do that with any wire. --- End quote --- Not disagreeing, but it can be a little tough poking around with a wire - a probe is easier to handle and safer to use. Doesn't matter if it's basically just a wire with a probe on the end. It's a tool like any other, and you can have better or worse implementations of that tool. Dave has a video showing a 9M resistor soldered to the end of some coax - there's your 10X wire probe, and he claims the performance rivals probes costing hundreds of $. But a conventional probe design is usually easier to use. I remember the first scope I used was some 1950's tube set with wire-nut terminals on the front panel - you just attached wires to your gear. And it worked for the task. |
| tautech:
--- Quote from: Doctorandus_P on September 16, 2023, 12:39:04 pm ---So apparently a loose PCB in the probe is a common problem and they send you a replacement when you send them a picture of a faulty one. So that solves most of it. --- End quote --- Probes only have 1 year warranty. Most common fault has to do with a poor crimp to the coax shielding braid IME. This shows itself by the 1x/10x switch not 10x dividing the signal cleanly when the reference (Gnd) lead is not used. < Our predelivery check while compensating the probes while we're at it. I have never seen a new one with loose guts. Member xrunner had a dud PP215 NIB, replaced by Siglent NA without question so he decided to investigate the dud one and got it working as it should. Repair starts here and in following posts: https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg4657630/#msg4657630 End result. https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg4667176/#msg4667176 |
| bd139:
I still can't see why they don't buy in some 10x fixed probes. Surely something like an Agilent 10074C can be produced for the same or probably less money than a shitty switchable one. Actually on that they really need to sell the following separately as well: 1. Standard 10x probe 2. Standard 1x probe 3. Replacement hardware kit for the above! Probe kits need the long strap, ground spring, coax adapter, markers and some decent plastic protectors that allow SOIC / DIP poking. Should ship Nx 10X (where N=number of channels) and 1x 1X with the scopes. |
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