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Forum section: electronics / general

author: JBaughb
author_rank: Regular Contributor
timestamp: May 13, 2016, 11:19:40 pm
content: gone

author: edavid
author_rank: Super Contributor
timestamp: May 14, 2016, 01:07:58 am
content: Sold

author: bitseeker
author_rank: Super Contributor
timestamp: May 14, 2016, 03:25:18 am
content: Yeah, it went really fast, followed by a function generator and a power supply. It's the EEVBlog effect.

author: Ordinaryman1971
author_rank: Frequent Contributor
timestamp: June 22, 2016, 09:05:01 pm
content: Well, sorry, I've bought all three.... opsss. Actually four....I've got the power supply, the multimeter and two signal generators.

author: bitseeker
author_rank: Super Contributor
timestamp: June 23, 2016, 01:33:14 am
content: Hey there, speedyshopper! No worries.How are the goodies? Hope you share some photos of your haul and perhaps some teardowns.

author: Brumby
author_rank: Unknown
timestamp: June 23, 2016, 01:40:04 am
content: Sigh...Deals like this are like hen's teeth in Australia.

author: edavid
author_rank: Super Contributor
timestamp: June 23, 2016, 02:25:35 am
content: So what the heck is that B+K B4100 DMM the seller has listed? No sign of it on bkprecision.com

author: bitseeker
author_rank: Super Contributor
timestamp: June 23, 2016, 02:58:38 am
content: I wondered the same thing when I saw that B4100. The 4009 sweep generator is a mystery as well. Region-specific models? Counterfeits?

author: EEVblog
author_rank: Unknown
timestamp: June 23, 2016, 05:34:48 am
content: BargainI forgot about a pallet load of Tek scopes going for auction the other day

author: Brumby
author_rank: Unknown
timestamp: June 23, 2016, 05:39:28 am
content: Where?

author: bitseeker
author_rank: Super Contributor
timestamp: June 23, 2016, 05:41:31 am
content: Pallet load!

author: bollio
author_rank: Contributor
timestamp: June 30, 2016, 08:56:59 pm
content: Quote from: bitseeker on June 23, 2016, 02:58:38 amSo I couldn't help myself, curiosity was too much... It's now on it's way to me where... definitely going to do a mini tear down on it to see what's inside. Mystery is correct, the only online reference to a 4009 sweep by BK Precision was the ebay listing itself. Will post pics when it comes in!

author: bitseeker
author_rank: Super Contributor
timestamp: July 01, 2016, 03:06:25 am
content: Thanks, bollio! Did you get the B4100 and the 4009 or just the 4009? Looking forward to seeing what's inside.The B4100 looked particularly odd to me because the LCD was so washed out. I'd expect B&K to use a better screen.

author: bollio
author_rank: Contributor
timestamp: July 01, 2016, 06:57:04 am
content: Just the 4009, I wasn't THAT curious to buy both!

author: bitseeker
author_rank: Super Contributor
timestamp: July 02, 2016, 12:03:36 am
content: LOL! OK, just curious.

author: bollio
author_rank: Contributor
timestamp: July 05, 2016, 08:46:10 pm
content: Quote from: bitseeker on July 02, 2016, 12:03:36 amWell, the "B+K Precision 4009 Sweep/Function Generator" just came in today. Everything about it screaming knock-off/forgery such as no mention ANYWHERE online about a model 4009 and unlabeled knob on the front panel (doesn't seem to do anything that I can find.)I figured I'd pop it open and have a look. It's entire shielded internally and apart from an abundance of hot glue and a mains earth cable that seemingly had worked free of itsSOLDERjoint. On the whole, it seems to be pretty well made. Looks are one thing, but thought I better test it out.I hooked it up to my fairly new (2 month old) factory calibrated Siglent 1102CML to test it out and to my amazement it was dead on the money... like 4 digits on the money! Still not sure what it is, but it is sure enough a 10Mhz waveform generator with adjustable output that ranges from 100mV to 20V amplitude. It does take a good couple minutes to warm up and settle down, and the coarse and fine adjust knobs are well coarser than they should be, but manageable.

author: bollio
author_rank: Contributor
timestamp: July 05, 2016, 08:47:29 pm
content: Some snaps of accuracy...

author: bollio
author_rank: Contributor
timestamp: July 05, 2016, 08:48:53 pm
content: and a couple more...

author: bollio
author_rank: Contributor
timestamp: July 05, 2016, 10:35:41 pm
content: By the way this seller is now a confirmed peddler of counterfeit test equipment! Just an FYI!

author: edavid
author_rank: Super Contributor
timestamp: July 05, 2016, 10:57:45 pm
content: Do you realize that B+K doesn't make anything itself, but just relabels equipment from other companies? So, the idea of "counterfeit B+K" is a bit odd.It looks like you have a prototype that didn't become a product.

author: bollio
author_rank: Contributor
timestamp: July 05, 2016, 11:33:56 pm
content: Counterfeit pertains to a trademark. Along with authentic items comes backing, a warrantee, service, support, calibration, etc. none of these amenities are afforded to a knockoff. Apple doesn't make their gear either but you can rest assured if I start selling stuff as an Apple iPhone I'd get myself in trouble!As far as unreleased or anything like that I actually spoke with B+K Precision directly and they confirmed it to be counterfeit.

author: bitseeker
author_rank: Super Contributor
timestamp: July 06, 2016, 12:22:47 am
content: Thanks for the update bollio. Very interesting indeed. I don't recall, did it come in a B&K box too? I seemed to recall that it did and had several other models listed on the side. Looked convincing, but when searching for that model never turned up anything, I already had my suspicions.Glad to see that it's put together pretty well and working fine. Maybe a manufacturer that used to make stuff for B&K decided to make some extras.

author: edavid
author_rank: Super Contributor
timestamp: July 06, 2016, 01:50:37 am
content: Quote from: bollio on July 05, 2016, 11:33:56 pmB+K won't support anything you buy from eBay.QuoteWho exactly confirmed it? I find it very hard to believe.

author: nidlaX
author_rank: Frequent Contributor
timestamp: July 06, 2016, 02:56:39 am
content: Global Specialties sells the 5MHz version of the function generator from the same OEM presumably. Who is the OEM?http://www.globalspecialties.com/test-equipment/signal-generators/item/726-4005.htmlEDIT: Actually, I think the OEM is Protek / GS Instruments. The B4100 multi-meter is probably a rebadge with a modified front panel. I highly doubt they are "counterfeit" instruments.EDIT2: I am 99% sure the BK B4100 is a variant of the Protek B4100, but there are almost certainly internal differences as well.

author: bitseeker
author_rank: Super Contributor
timestamp: July 06, 2016, 03:42:22 am
content: At least one of those came in a B&K-branded box too. Very odd.

author: bollio
author_rank: Contributor
timestamp: July 06, 2016, 04:41:33 am
content: QuoteWho exactly confirmed it? I find it very hard to believe.I didn't get names, but I called them directly and spoke with a couple people. The guy who mainly helped me out actually said he'd look into it further and about 15 minutes later he called me back and told me straight up that it is a fake.It did I fact come in a BK Precision box with a variety of models on it. Every other BK Precision box I've seen has had these models printed directly onto the cardboard. This box, it seems, someone had covered the original printing with a sticker adding 3 bogus model numbers. 4002, 4005, and the 4009, which was this one.nidalX hit it on the head I think... Essentially someone's taken an oem and rebadged it as BK Precision to drive up the price... It's the same chassis as that 4005 with the addition of the BK trademarks, blue bumper, and the knob that has no marking is the ttl, which this doesn't have and they just left in the knob...

author: nidlaX
author_rank: Frequent Contributor
timestamp: July 06, 2016, 05:12:21 am
content: Quote from: bollio on July 06, 2016, 04:41:33 amAre they saying their own OEM is "counterfeiting" products on the side? The other products listed on that box, from the 1856D to the 2831D, are all pretty obviously done by the same company. Same enclosure, same parts on the front and back, same label designs, made in Korea, etc etc. Unlike the 4002-4009, those products ARE listed by BK. There a bunch of retailers that rebadge those instruments - Global Specialties, UniSource, EZ-Digital, and who knows what else.However, I retract my statement about Protek being the OEM since they could be another rebadger. I'm not familiar with the Korean test equipment manufacturing market.

author: bollio
author_rank: Contributor
timestamp: July 06, 2016, 05:23:12 am
content: The other products listed on that box, from the 1856D to the 2831D, are all pretty obviously done by the same company.Here's the thing... the box was originally printed for 3 devices... all legit BK products. Then someone slapped this sticker over the original text... it's all kinda strange/fishy.

author: bitseeker
author_rank: Super Contributor
timestamp: July 06, 2016, 10:53:14 pm
content: Quote from: nidlaX on July 06, 2016, 05:12:21 amIt's also possible someone else is buying equipment from an OEM and rebadging it. It'd be fun to find out what's really going on, but probably difficult to do from afar.

author: Brumby
author_rank: Unknown
timestamp: July 06, 2016, 11:06:07 pm
content: My guess is an OEM made a few products using left over parts from previous production runs...