<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Apr 9, 2017 at 7:06 PM, Mark Atherton <span dir="ltr"><<a href="mailto:markaren1@xtra.co.nz" target="_blank">markaren1@xtra.co.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div class="m_-1398887733270128871moz-cite-prefix">Which Salaea do you have Charles ?<span class="HOEnZb"><font color="#888888"><br></font></span></div></div></blockquote><div><br></div><div>I have one of the old original ones: 8-bt, 24MHz devices they don't sell any more. The new devices are up to 100MHz. Small print: you probably can only get 100MHz if you're sampling 2 or 4 bits.<br><br></div><div>At one customer's place there was a problem with some SPI comms getting screwed up. Very intermittent (one per hour or more). They had a $20k logic analyser with about a 1-minute deep buffer. Could not catch the problem.<br><br></div><div>We set up the salaea and ran it for an hour. Problem captured. Problem fixed 20 minutes later.<br><br></div><div><br></div><div> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div bgcolor="#FFFFFF" text="#000000"><div class="m_-1398887733270128871moz-cite-prefix"><span class="HOEnZb"><font color="#888888">
<br>
-Mark</font></span><div><div class="h5"><br>
<br>
On 9/04/2017 6:24 PM, Charles Manning wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">
<div>
<div>I'm with Mike on this.<br>
<br>
</div>
Nice looking kit, but a real pity it only has 16k buffers.<br>
<br>
</div>
Being able to stream with the Salaea makes for something quite
amazing. I've used it for logging, then analysing many hours of
samples.<br>
<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, Apr 9, 2017 at 3:24 PM, Matthew
Pike <span dir="ltr"><<a href="mailto:jumbledthoughts389@hotmail.com" target="_blank">jumbledthoughts389@hotmail.<wbr>com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>Seems like my shopping kart link doesn't work (at least
not on my smart phone).<br>
These are the items I was referring to:</p>
<p><tt>$442.86 Analog Discovery 2 <a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://www.digikey.co.nz/product-detail/en/digilent-inc/410-321/1286-1117-ND/5810115" target="_blank">
http://www.digikey.co.nz/produ<wbr>ct-detail/en/digilent-inc/410-<wbr>321/1286-1117-ND/5810115</a></tt><tt><br>
</tt><tt> $23.79 Set of 6 Mini Grabbers <a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://www.digikey.co.nz/product-detail/en/digilent-inc/240-052/1286-1050-ND/4090099" target="_blank">
http://www.digikey.co.nz/produ<wbr>ct-detail/en/digilent-inc/240-<wbr>052/1286-1050-ND/4090099</a></tt><tt><br>
</tt><tt> $31.73 BNC Adaptor board <a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://www.digikey.co.nz/product-detail/en/digilent-inc/410-263/1286-1073-ND/4840860" target="_blank">
http://www.digikey.co.nz/produ<wbr>ct-detail/en/digilent-inc/410-<wbr>263/1286-1073-ND/4840860</a></tt><tt><br>
$31.73 2 BNC Oscilloscope Probes <a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://www.digikey.co.nz/product-detail/en/digilent-inc/460-004/1286-1075-ND/4840870" target="_blank">
http://www.digikey.co.nz/produ<wbr>ct-detail/en/digilent-inc/460-<wbr>004/1286-1075-ND/4840870</a><br>
$530.11 (Total)<br>
</tt></p>
<p><tt>I can stand to skip the mini grabbers, and maybe
get cheaper BNC probes elsewhere, but I am still
looking at ~$500.<br>
That's the most I've every considered spending on
electronics equipment. Christchurch Robotics may be
bad for my wallet :)</tt></p>
<p><tt><br>
</tt></p>
<p><tt>Matt Pike<br>
</tt></p>
<div>
<div class="m_-1398887733270128871h5">
<br>
<div class="m_-1398887733270128871m_-6076370136158812100moz-cite-prefix">On
8/04/2017 11:09 a.m., Matthew Pike wrote:<br>
</div>
<blockquote type="cite">
<p>Looks good to me - I'm going for the Pro Bundle,
as I'd like some BNC scope probes with it.</p>
<p>Here's a shopping kart at Digi-Key, with the
equivalent items. $530.11. (<a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://www.digikey.co.nz/short/3w53b8" target="_blank">http://www.digikey.co.nz/shor<wbr>t/3w53b8</a>)<br>
</p>
<p>If you just want the scope, $442.86 from
Digi-Key. Much better than Element 14 or RS-Online</p>
<p><br>
</p>
<p>Matt Pike<br>
</p>
<br>
<div class="m_-1398887733270128871m_-6076370136158812100moz-cite-prefix">On
5/04/2017 6:57 a.m., Mike Field wrote:<br>
</div>
<blockquote type="cite">If anybody wants to try
before they buy I can lend you mine for a few
days.<br>
<br>
Pretty much a jack of all trades, master of none -
main restriction being usable bandwidth and sample
buffer sizes are limited.<br>
<br>
For purely digital work a Saleae is 100x better as
samples are streamed to the PC for analysis and
decode.<br>
<br>
For analogue work a low end Scope with real probes
is better/usable, and has more bandwidth.<br>
<br>
Any bench PSU would be a better PSU. <br>
<br>
But it is integration of all the functions that is
awesome, esp between the signal generator and the
scope inputs (so you can test phase and freq
response of the system under test).<br>
<br>
However it does fit in the palm of your hand,
making it handy if working within its limitations.
Much like any Swiss Army Knife/Leatherman tool I
guess
<br>
<br>
Mike<br>
<br>
<div class="m_-1398887733270128871m_-6076370136158812100quote" style="line-height:1.5"><br>
<br>
-------- Original Message --------<br>
Subject: [chbot] Diligent USB test tools<br>
From: Mark Atherton <br>
To: Christchurch Robotics <br>
CC: <br>
<br>
<br type="attribution">
<blockquote class="m_-1398887733270128871m_-6076370136158812100quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
All,<br>
<br>
Have just been forwarded this message, and am
taking the liberty of <br>
passing it on, since it had been forwarded
sever times before it reached <br>
me...<br>
<br>
Looks like they are $568.84 from element 14,
even so, an interesting <br>
piece of kit.<br>
<br>
-Mark<br>
<br>
=========================<br>
<br>
Just received an Analog Discovery 2 unit for
$279 - <br>
<a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://store.digilentinc.com/analog-discovery-2-100msps-usb-oscilloscope-logic-analyzer-and-variable-power-supply/" target="_blank">http://store.digilentinc.com/a<wbr>nalog-discovery-2-100msps-usb-<wbr>oscilloscope-logic-analyzer-<wbr>and-variable-power-supply/</a><br>
<br>
- Farnell have them for about GBP 220 <br>
<a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://uk.farnell.com/digilent/410-321/oscilloscope-usb-2-ch-30mhz-100msps/dp/2528523" target="_blank">http://uk.farnell.com/digilent<wbr>/410-321/oscilloscope-usb-2-<wbr>ch-30mhz-100msps/dp/2528523</a>
<br>
.<br>
<br>
This is an interesting bit of kit - it's a
cooperation between Analog <br>
Devices (who do all the signal conditioning
and interfacing) and Xilinx, <br>
who do the logic, but put together by
Digilent, who sell Xilinx <br>
development systems... Initially just a
reference design, i.e. a <br>
technical paper, they realised that they had
something pretty neat on <br>
their hands, so made it a product.<br>
<br>
The design has turned into a really cool bit
of kit at a very acceptable <br>
price - a full design rationale is available
as are all the schematics <br>
etc. in the reference manual (also on the
Farnell page). Its a really <br>
nice unit... Two programmable supplies, 2
waveform generator channels, <br>
16 logic channels. Lots of analog too. 14-bit
A/D/A as well, not the <br>
usual 12-bit...<br>
<br>
Very few compromises have been made - by using
14-bit DACs and ADCs, it <br>
compares very favorably with far more
expensive units. The software is <br>
also extremely stable.<br>
<br>
As a small unit to keep with the laptop,
there's not a lot to argue <br>
about... I keep mine with the laptop at all
times. The wiring harnesses <br>
are only $10/each, so I leave those attached
to the boards I'm working <br>
on - the WaveForms (free) software has the
concept of projects which <br>
contain the configurations of all the devices
on the AD2 that you are <br>
using for each setup, so switching boards
takes literally a minute (or <br>
less).<br>
<br>
I was using it on the flight from the UK back
to the UAE last week - I <br>
had my laptop out, a Texas Instruments
MSP-EXP430FR5969 development <br>
board and the Analog Discovery - 6 hours of
uninterrupted development <br>
time - USB-powered dev environments are
wonderful. No problems from <br>
other passengers or the crew - I told the
steward in advance I was an EE <br>
and that I'd be working on the 'plane - I also
made sure to keep any <br>
blinking LEDs concealed<br>
<br>
I also have the probe expansion board - just
so cute!<br>
<br>
* Two-channel USB digital oscilloscope (1MΩ,
±25V, differential, <br>
14-bit, 100MS/s, 30MHz+ bandwidth - with the
Analog Discovery BNC <br>
Adapter Board<br>
* Two-channel arbitrary function generator
(±5V, 14-bit, 100MS/s, <br>
12MHz+ bandwidth - with the Analog Discovery
BNC Adapter Board<br>
* Stereo audio amplifier to drive external
headphones or speakers <br>
with replicated AWG signals<br>
* 16-channel digital logic analyzer (3.3V CMOS
and 1.8V or 5V <br>
tolerant, 100MS/s)<br>
* 16-channel pattern generator (3.3V CMOS,
100MS/s)<br>
* 16-channel virtual digital I/O including
buttons, switches, and <br>
LEDs – perfect for logic training applications<br>
* Two input/output digital trigger signals for
linking multiple <br>
instruments (3.3V CMOS)<br>
* Single channel voltmeter (AC, DC, ±25V)<br>
* Network analyzer – Bode, Nyquist, Nichols
transfer diagrams of a <br>
circuit. Range: 1Hz to 10MHz<br>
* Spectrum Analyzer – power spectrum and
spectral measurements (noise <br>
floor, SFDR, SNR, THD, etc.)<br>
* Digital Bus Analyzers (SPI, I²C, UART,
Parallel)<br>
* Two programmable power supplies (0…+5V ,
0…-5V). The maximum <br>
available output current and power depend on
the Analog Discovery 2 <br>
powering choice:<br>
<br>
...250mW max for each supply or 500mW total
when powered through USB<br>
<br>
...2.1W max for each supply when powered by an
auxiliary supply. 700mA <br>
maximum current for each supply.<br>
<br>
As of March 17th, they have also released a
fully-fledged logic analyser <br>
version, the Digital Discovery for $199 - <br>
<a class="m_-1398887733270128871m_-6076370136158812100moz-txt-link-freetext" href="http://store.digilentinc.com/digital-discovery-portable-logic-analyzer-and-digital-pattern-generator/" target="_blank">http://store.digilentinc.com/d<wbr>igital-discovery-portable-logi<wbr>c-analyzer-and-digital-pattern<wbr>-generator/</a>
<br>
.<br>
This is an up to 800MHz multi-channel logic
analyser & pattern generator <br>
for peanuts.<br>
<br>
<br>
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