[LFS/WTB] USB 2.0/3.0 analyzer - Page 1
Forum section: electronics / general

author: blueskull
author_rank: Unknown
timestamp: July 30, 2017, 08:36:20 pm
content: Hi. I'm looking for a used USB2.0 or optionally 3.0 protocol analyzer. Will be used to facilitate development of USB protocol.Teledyne, Ellisis, ITIC, Totalphase, I don't care -- just something that allows low level (physical level, below URB level) analyzing.USB Audio Class2.0decoding will be a bonus, though at this moment I don't think any can do, but I may be wrong.Looking for a low price as I'm still a student, though almost graduated.

author: Asmyldof
author_rank: Regular Contributor
timestamp: July 31, 2017, 04:40:15 pm
content: I joined the Open-Viszla project in the Kickstarter Phase, with an early reward.Never used the board due to vastly changed time available when they were finally delivered, just received it, looked at it in the ESD lab, sealed it back up.Look at that project, if it's something you can use make me an offer for a bare-board + schematic and I'll see if that makes sense in terms of also getting it from storage, wrapping up and sending it to the Asian continent. NL postage isn't always super affordable, depending on district and amount of tracking you want (I'd suggest "as much as possible").I believe it hasn't got any working code on it, so really do check the project whether that's something you can work with before we go into a transaction that'll leave you unhappy.(Schematic came with it, printed, can also not send that with, since it's available online. Might save postage, though I doubt it.)((Any people warning "us" off of this transaction, feel free to post, I'm offering it with all good intentions, but as I never used it, anyone who has is welcome to butt in))For more back story (and clarity why I never had time to do anything with it when it was _finally done_):https://www.eevblog.com/forum/crowd-funded-projects/openvizsla-still/

author: Asmyldof
author_rank: Regular Contributor
timestamp: July 31, 2017, 07:57:40 pm
content: No worries. If you change your mind at any point, send a message. Not looking for profit. Or even 1:1 Return on Investment. Thing was written off when it arrived.

author: simmconn
author_rank: Regular Contributor
timestamp: August 02, 2017, 12:24:07 am
content: I have an old Lecroy Conquest I can let go. But I guess it may be too old for you to consider (latest software release in 2010).I've been using one of those since 2003. Back in the day it cost as much as a new car.A tool is just a tool. Newer and better tools can help you get the job done faster, but it is still the developer that determines the success or failure of a project. When I did my first USB project (proprietary video streaming with UAC 1.0), all I had was a Futureplus USB FS probe on a leased HP 165x LA. After the project was done the leasing company let us keep the LA for $1 - it has become so old at the time that they no longer want it back.

author: John_ITIC
author_rank: Frequent Contributor
timestamp: August 02, 2017, 02:54:41 am
content: The lowest priced professional USB 2.0 Protocol Analyzer is the ITIC 1480A. It is $695.http://www.internationaltestinstruments.com/products/97-1480a-usb-20-protocol-analyzer.aspxEdit: I have a Lecroy T3, which has the same GUI as the T2. There is no low-level line-state decoding of the D+ and D- in any other USB Analyzer than the 1480A (i.e. the "message view"). The 1480A, therefore, allows you to see the lowest line state up to the highest transaction view. The T2 does have 256 MB, though, while the 1480A has 32 MB.../John.

author: John_ITIC
author_rank: Frequent Contributor
timestamp: August 04, 2017, 03:53:30 am
content: Quote from: blueskull on August 02, 2017, 03:45:01 amYes, the class decoders were never implemented for the 1480A. The market price of USB 2.0 protocol analyzers are now so low that the sales do not recover the extra investment in software development of class decoding.

author: brumbarchris
author_rank: Regular Contributor
timestamp: August 04, 2017, 06:58:55 am
content: A new Packet-Master USB12 from MQP Electronics (http://www.mqp.com/usb12.htm) only costs 330GBP (excl VAT) and at that price it includes the following classes: Hub, HID, Mass Storage, Printer and Vendor .For an additional 120 GBP you can add to it also the audio class(http://www.mqp.com/usbdev_buy.htm).Now...if you were able to find one of those second hand I believe it would be a good deal.Regards,Cristian