How odd, given that iOS has had robust Bluetooth support for a long time, and that both the 1177A and 1117A use the same Bluetooth profile. (It's not that the 1177A uses a weird Bluetooth type, either, it's just BT 2.1.)
How odd, given that iOS has had robust Bluetooth support for a long time, and that both the 1177A and 1117A use the same Bluetooth profile. (It's not that the 1177A uses a weird Bluetooth type, either, it's just BT 2.1.)What are you smoking? iOS has intentionally crippled BT support. It does not support SPP without using Apple's MFI chip (the Apple tax chip).
Actually, iOS only supports SPP as part of the MFI program, requiring the addition of an MFI chip from Apple
As best I can tell, the MFI chips cost about a dollar, so it's not as though its material cost is responsible for the cost differential.
As best I can tell, the MFI chips cost about a dollar, so it's not as though its material cost is responsible for the cost differential.You are just speculating.
The cost of the chips varies greatly depending on volume -- and many other factors. The Apple MFI chip cost is not the only material cost associated with MFI support. I'm not sure what your background is, but I can assure you that there are significant additional costs to product development beyond the chip cost. I could go into details, but this is not the place for it.
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.
As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.
Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?
I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-
Up until a few years ago, the price was an order of magnitude more that what you quote. It is certainly a heftier chunk than you seem to want others to believe. Why?
What does this have to do with the Keysight Bluetooth Adapter?
Does Keysight have to pay a license fee to Apple for each U1117A adapter they sell in order to have the iPad be able to link to the adapter?
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.
As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?
I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-
Up until a few years ago, the price was an order of magnitude more that what you quote. It is certainly a heftier chunk than you seem to want others to believe. Why?
"As best I can tell, the MFI chips cost about a dollar"
Actually I wasn't speculating as such, I was going by the (admittedly unreliable) numbers I found in discussions about it when I was googling the topic.
As for the cost of the chip not being the only factor, that's why I expressly stated that the material cost of the chip isn't responsible. I didn't say anything about the other costs of MFI support.Not speculating but presenting "facts" based on unreliable data found on the interwebs, by someone with no clue how Apple's MFI program works?
I'll leave this here: http://appleinsider.com/articles/14/02/07/apple-lowers-mfi-lightening-licensing-fees-paving-way-for-more-affordable-ios-accessories-
Up until a few years ago, the price was an order of magnitude more that what you quote. It is certainly a heftier chunk than you seem to want others to believe. Why?
What does this have to do with the Keysight Bluetooth Adapter?
Does Keysight have to pay a license fee to Apple for each U1117A adapter they sell in order to have the iPad be able to link to the adapter?
Was this really presented as a "fact"?Quote"As best I can tell, the MFI chips cost about a dollar"
I say, buy a cheap 1177A and a cheap used Android device and enjoy both the saving and the added freedom of not needing to use your iOS device for lab work Yes I know the 1117A has a longer range...... but my lab is not that large and with distance the reliability of connection can reduce anyway.
Fraser
As discussed earlier, the current listings have both the 1252A and 1252B. Looking at the posted datasheets the only real difference for the A from the B, other than extra frequency support in the high AC ranges, seems to be the higher input impedance at low voltages.
1) are there any practical issues that would arise from the impedance difference? I'll admit that I'm not too knowledgeable about what that means for the DMM's capabilities.
2) is there anything else I'm missing? If the minor datasheet differences aren't important, it looks like the A might be a good choice -- seems to come with a few extras and despite it's being older I'm getting the impression that the cal dates on the B's are around the same time by now.
Also despite rereading the last few pages I'm having trouble telling whether the current batch of B's is having problems or not (and who knows about the A's). I see that the seller is going to stand behind the products but I'd like to avoid any defect problems if possible. Should I be worried about anything here?
Finally, (hope I'm not asking too many questions here) does the older cal date have any practical consequences for a hobbyist use-case?
I like the high count and accuracy figures for these meters, but if they've drifted too far out of spec that's somewhat moot (and I don't have the equipment to do a nice calibration myself).
It sounds like most people have been getting good results but the cal dates appear to be sliding backwards as the seller goes through stock.
My goal or interest is just to learn the fundamentals of analog and digital electronics and build some projects like a bench power supply and microprocessor related circuits and maybe some current & resistance reference type gear. I have a thing about accuracy and like my stuff to be as close to dead on as I can afford, probably over the top. I feel like my next purchase should be along the lines of an accurate DMM. A bench unit would be fine with me, but on the surface this looks like a very good deal with the exception of a few lately showing up a bit off. Not having anyway to check it, I am not sure I would trust it without having it calibrated or at least checked by someone with some known good equipment. I don't know anyone like that so I would have to pay someone to do it, or am I miss reading some of the more recent posts. Thanks for taking the time to read this. Dave
I haven't heard anything specifically about the A models from nmori (no purchases mentioned here yet), so I don't know how they compare to his B models. I quite like the color of the A models, though I got a B one before the A's showed up.
I guess I'm the only one here to have taken the plunge on the A model. It should be arriving today or tomorrow. I'll give a rundown on what's in the box and how old the cal certs are.
I like the color of the U1253A's he's selling (darker blue) better than the light blue of the U1252A but the price is higher, the battery life is abysmal if the handheld meter spreadsheet is to be believed, and they are reportedly impossible to read outdoors.
Still kicking myself for not pouncing 2 years ago when Distrelec was selling off the U1273AX (the extended temp OLED model) for less than $500...
I understand that OLED displays contain organic components in their construction. I do not know if the ageing issue continues whether the display is on or off. If it is age related rather than use, New Old Stock units could already be well on the way to OLED display failure.