Steve most of the PC USB scopes I have seen have pretty low bandwidths and/or sampling rates that tend to top out around 200MHz and 200Msps. The software has gotten steadily better, and they usually have the advantage of comparatively deep memories. If you are only looking at repetitive signals, some of them will do ERTS to get equivalent sample rates up to a few Gsps. Otherwise don't expect real time analog b/w over 100MHz. If you really need 200MHz I would get one of the current generation Tek or Agilent scopes that are quite compact and really go up to 1GHz. They pack very nicely into Pelican rolling luggage and have USB interfaces for control and capture from your laptop. Steve Steven Kan wrote: > Heh. I thought he was asking about a PC-based 'scope :) > > On that note, does anyone here have experience with USB-based oscilloscopes? > I am looking for something to use for customer demos of our systems, and > would prefer not to have to lug a full-fledged scope around. Luggage is a > step-function, and right now I'm very nearly full. > > I need only two channels + trigger, and really need only about ~200 MHz > analog bw. 50 Ohm termination would be nice, but I can get by with an inline > terminator if I need to. I don't need much in the way of features and > smarts; I just need to display waveforms without horrible lag. > > I've read various reviews for PC-based 'scopes, but I'd like some feedback > from real engineers who have actually used any of these. > > Any recommendations or contra-recommendations? Thanks! > -- > Steven Kan (p) 310-515-5330 x24 > Pulse Instruments (f) 310-515-0068 > 1234 Francisco St., Torrance, CA 90502 (c) 818-620-3062 > mailto:steven@xxxxxxxxxxxxxxxxxxxx > http://www.pulseinstruments.com > See our new Data Acquisition system! > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > > List technical documents are available at: > http://www.si-list.net > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > > > -- Steve Weir Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 California office (408) 884-3985 Business (707) 780-1951 Fax Main office (401) 284-1827 Business (401) 284-1840 Fax Oregon office (503) 430-1065 Business (503) 430-1285 Fax http://www.teraspeed.com This e-mail contains proprietary and confidential intellectual property of Teraspeed Consulting Group LLC ------------------------------------------------------------------------------------------------------ Teraspeed(R) is the registered service mark of Teraspeed Consulting Group LLC ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu