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Groups > comp.lang.forth > #37453
| From | rickman <gnuarm@gmail.com> |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: What is greenarrays up to lately? |
| Date | 2015-03-20 00:51 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <meg8vr$t67$1@dont-email.me> (permalink) |
| References | (6 earlier) <ea196b75-8829-4581-9402-f5e43c0238cc@googlegroups.com> <87wq2dhnvj.fsf@jester.gateway.sonic.net> <med4tn$iue$1@dont-email.me> <0be8e3c3-30da-4098-b637-bbdddb8e7319@googlegroups.com> <87pp84u47c.fsf@jester.gateway.sonic.net> |
On 3/19/2015 4:23 PM, Paul Rubin wrote: > > Rick mentioned a potential digital oscilloscope application, and might > be interested in this: > > https://www.picotech.com/support/topic14347.html > > Someone mentioned it to me (I think that's the product) and according to > the person's description, it uses the Beaglebone's on-chip realtime > coprocessors to implement an oscilloscope that goes up to 100 MHz. Is that 100 MHz bandwidth or 100 MHz sample rate? Most often any MHz number on such a scope project is sample rate while commercial scopes cite the usable bandwidth. I believe it was when I was trying to determine the feasibility of the scope project that I gave up on the GA144 in general. There are some gaping holes in the timing data provided for the GA144 and when I tried to dig a bit deeper into it I was told the info was "confidential" or something to that effect. Seems if you learn the details of the timing it might enable you to reverse engineer the comms port design or something. So you can't get detailed timing on I/O operations and so you can't use the I/O at close to it's max capabilities. I was told to write my app and measure the performance... lol I guess GA understands the concept of shooting from the hip and if it doesn't work, just scrapping the design. I shouldn't say I've given up entirely on the GA144. As I believe I mentioned before there are still two projects I might try the GA144 in. One is a DDS design where the GA144 could provide 5 simultaneous outputs which could be related signals or completely independent. The 5 DAC inputs could be used for clocking, synchronization or other related features. The other project is a receiver app, rather an SDR (software defined radio) for low frequency signals. This could be a direct to antenna design if I can get the input threshold stable enough. In theory this could run from a very low power source such as a single AA battery or even scavenge power from the environment. The GA144 might be low power enough to pull this off. -- Rick
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What is greenarrays up to lately? polymorph self <jackvanc3@gmail.com> - 2015-03-11 21:54 -0700
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-15 14:08 -0700
Re: What is greenarrays up to lately? hughaguilar96@gmail.com - 2015-03-15 19:10 -0700
Re: What is greenarrays up to lately? polymorph self <jackvanc3@gmail.com> - 2015-03-16 21:58 -0700
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-17 12:19 -0700
Re: What is greenarrays up to lately? Jason Damisch <jasondamisch@yahoo.com> - 2015-03-17 13:24 -0700
Re: What is greenarrays up to lately? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-03-16 18:03 +0000
Re: What is greenarrays up to lately? Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-03-16 19:42 +0000
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-17 16:26 -0400
Re: What is greenarrays up to lately? Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-03-19 11:24 +0000
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 00:12 -0400
Re: What is greenarrays up to lately? Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-03-21 23:03 +0000
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-21 21:14 -0400
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-22 00:38 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-22 18:35 -0400
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-22 16:18 -0700
Re: What is greenarrays up to lately? Bernd Paysan <bernd.paysan@gmx.de> - 2015-03-23 01:06 +0100
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-22 22:20 -0400
Re: What is greenarrays up to lately? Jason Damisch <jasondamisch@yahoo.com> - 2015-03-23 08:02 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-23 16:13 -0400
Offer + Re: What is greenarrays up to lately? Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-04-08 09:51 +0100
Re: Offer + Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-04-10 00:47 -0400
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-17 16:24 -0400
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-17 13:57 -0700
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-17 14:36 -0700
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-17 16:36 -0700
Re: What is greenarrays up to lately? Dennis Ruffer <daruffer@gmail.com> - 2015-03-18 07:00 -0700
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-18 15:54 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-18 19:27 -0400
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-18 16:44 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-18 20:24 -0400
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-19 07:22 -0700
Re: What is greenarrays up to lately? Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-03-19 22:20 +0000
Re: What is greenarrays up to lately? Bernd Paysan <bernd.paysan@gmx.de> - 2015-03-20 00:14 +0100
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-20 08:24 -0700
Re: What is greenarrays up to lately? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-03-20 15:30 +0000
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-20 08:49 -0700
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-20 09:04 -0700
Re: What is greenarrays up to lately? Bernd Paysan <bernd.paysan@gmx.de> - 2015-03-20 20:32 +0100
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 12:31 -0400
Re: What is greenarrays up to lately? Bernd Paysan <bernd.paysan@gmx.de> - 2015-03-20 19:44 +0100
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-20 08:20 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 00:22 -0400
Re: What is greenarrays up to lately? Mark Wills <markwills1970@gmail.com> - 2015-03-20 03:07 -0700
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-20 08:41 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 12:49 -0400
Re: What is greenarrays up to lately? Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-03-21 13:29 +0000
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 12:43 -0400
Re: What is greenarrays up to lately? Jason Damisch <jasondamisch@yahoo.com> - 2015-03-20 09:48 -0700
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-19 07:34 -0700
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-19 13:23 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 00:51 -0400
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-20 21:05 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-21 04:04 -0400
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-21 09:16 -0700
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-21 14:02 -0400
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-20 00:39 -0400
Re: What is greenarrays up to lately? JUERGEN <epldfpga@aol.com> - 2015-03-19 07:15 -0700
Re: What is greenarrays up to lately? Howerd <howerdo@yahoo.co.uk> - 2015-03-18 00:09 -0700
Re: What is greenarrays up to lately? Paul Rubin <no.email@nospam.invalid> - 2015-03-18 00:23 -0700
Re: What is greenarrays up to lately? lynx <rinkasu@kaze.void.null> - 2015-03-19 23:40 +0000
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-17 23:16 -0400
Re: What is greenarrays up to lately? albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-03-18 11:05 +0000
Re: What is greenarrays up to lately? rickman <gnuarm@gmail.com> - 2015-03-22 22:38 -0400
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