Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Don Y Newsgroups: sci.electronics.design Subject: Re: GPIB bus topology Date: Thu, 2 May 2024 17:15:00 -0700 Organization: A noiseless patient Spider Lines: 43 Message-ID: References: <6632ba30$0$8096$882e4bbb@reader.netnews.com> <66341920$3$6450$882e4bbb@reader.netnews.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Fri, 03 May 2024 02:15:09 +0200 (CEST) Injection-Info: dont-email.me; posting-host="7ff8d649110e8370d6cf8434bf1d67f6"; logging-data="164389"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+jynZE7MMFI6wfYMieYemi" User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 Cancel-Lock: sha1:I8YHMg82cM+kehHdgSkVsqc14bM= Content-Language: en-US In-Reply-To: <66341920$3$6450$882e4bbb@reader.netnews.com> Bytes: 2987 On 5/2/2024 3:52 PM, bitrex wrote: >> What are you planning on using in the host (PC) to talk to the instruments? > > Hoping to use SciPy/Numpy with a National Instruments GPIB-USB dongle on a > Linux machine. Be sure the dongle is on the end of a USB cable and not supported by the USB port on the host! > There's a wonderful tech-surplus warehouse of the old fashion in the Boston > area, they sell the USB interfaces at $50 and 1 meter L-com/Belkin/assorted > brand GPIB cables at $10 a pop Like Hefrons'? I get most of my rescues as freebies from discards that aren't "mass marketable" (e.g., not many mainstream folks want 50 pound servers, SAS drives/cables, PoE switches, etc.) so have only "scrap" value (e.g., 10c/pound for a computer; 21c/pound for a VRLA battery; etc.). As a result, I have a shitload of boxes full of assorted cables: SCSI1, SCSI1-SCSI2, SCSI2-VHDCI, SunSCSI, Apple SCSI, USB2/3/c, 25pin parallel, DB9 serial, eSATA, CAT5/6, 13W3, composite video, ... Many years ago I discarded the GPIB cables as "too bulky for the functionality they provide" and moved to GPIB-over-enet. I can leave test equipment piled out of the way until needed and then just poke a patch cord into the GPIB adapter and be up and running. My only (partial) regret was discarding all the 10Base2 stuff as it was *so* much easier to route a shitload of hosts than the star topology used by *BaseT. Yeah, I could never have lived with the 1MB/s transfer speed but the hassle of having to run individual drops to each piece of kit is REALLY annoying... especially when you want to rearrange stuff! SWMBO has a cartoon of some guy crawling around under a bench amidst a tangle of wires... with my initials written above him! (My body is way too old for this sort of shit)