I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate an
internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB of raw data. I can
It might make sense to layout something on the front section of
the board.
As long as that section isn't stuffed it won't get in the way.
Whatever is
likely to be most popular.
Does anybody know of an inexpensive FPGA card like that?
Tom eventually went with a USBee SX board. The
There are two issues with this problem. One is clock recovery. The other is
getting a large chunk of data into memory and presumably on to disk.
This leads in to a question I've been meaning to ask for a while. I've been
looking for a low cost FPGA on PCI board. This might be a wild goose
I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate
an internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB of raw data. I can
handle
Tom Van Baak wrote:
I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate
an internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB
Tom Van Baak skrev:
I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate
an internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB
I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate
an internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB of raw data. I can
handle
Tom Van Baak wrote:
I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate
an internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB
I am on the road right now, so I am not in front of it, but I have
the HandyScope HS3 100MHz USB which can run a strip chart recorder
for days / years if you like; depending on hard drive space. The
strip chart may be only available at lower speeds? I dunno... I
can't remember but
WB6BNQ wrote:
Tom Van Baak wrote:
I have a old data device that is spitting out TTL data at 10 MHz.
There's just a data line (no clock) but the edges clearly indicate
an internal 10 MHz clock.
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC.
At 14:31 -0700 10-04-2009, WB6BNQ wrote:
As others have suggested, perhaps a Software Defined Receiver would do the
trick. The best one on the market and the cheapest uses a very high speed A/D
process for a range of 500Hz to 30MHz.
Look at the following URL: http://www.rfspace.com/SDR-IQ.html
In message f75434b2bb1f4c31b339d06b495ed...@pc52, Tom Van Baak writes:
What is the best/quickest/easiest way to capture data like this?
I've looked at various USB or LAN logic analyzer and 'scopes
but most seem to work on batches of data. I need a continuous
capture.
GNUradios USRP ?
--
-- Forwarded message --
From: Tom Van Baak t...@leapsecond.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Date: Fri, 10 Apr 2009 13:38:55 -0700
Subject: [time-nuts] OT: 10 MHz data capture, help
I'd like to do a continuous capture
of precise time and frequency measurement
time-nuts@febo.com
Date: Fri, 10 Apr 2009 13:38:55 -0700
Subject: [time-nuts] OT: 10 MHz data capture, help
I'd like to do a continuous capture of the bits, for up to tens of
minutes, into a PC. That comes to about 1 GB of raw data. I can
handle
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