RE: [CAD_CAM_EDM_DRO] Looking for scale interprolator circut

Jon,

You do realise that the cct is defined by all three pages yes ?

I realise that you may not be impressed with this cct but it is ineed a very
high capability unit (read the manual). This is one way to implement such an
interpolator, obviously there are othe methods implemented using many more
components and not relying on an FPGA.

To interpolate an analog signal, one must first sample it and then convert
this to a digital result prior to applying an appropriate algorithm. Using a
device such as an FPGA or high speed microprocessor/microcontroller is
likely one of the lowest part count methods for doing this.

CS

>Look at page 53.
>

There is no page 53 of the manual, as the pages themselves are labeled.
Acrobat labels the pages differently, so i'm guessing you mean Acrobat's
page 53, which is actually page 49 of the document.
That page seems to be 4 serial data level translators and an FPGA.
A square on a schematic with an FPGA is not going to do you much good,
either, without the configuration information for the FPGA. The interface to
the analog scales is actually on the next page, where it shows the 15-pin D
connectors with the SIN+/SIN- and COS+/COS- signals going into an
op-amp. But, that's all there is on that page, and that is a FAR cry from an
interpolator.

Jon

>CS
>
>
>
>>Jon Elson <elson@...> wrote:
>>
>>cstrudwicke@... wrote:
>>
>>
>>
>>>Have a look at the rear of this manual :
>>>
>>>http://www.deltatau.com/fmenu/ACC-51P.pdf
>>>
>>>This is a 4096x interpolator board from Delta Tau.
>>>
>>>
>>>
>>>
>>>
>>No, it is just a signal conditioner that converts the differential
>>sin/cos
>>signals to single-ended, and feeds them to an ADC that is processed
>>by the Delta-Tau DSP processor. So, there is almost nothing actually
>>shown in those schematics.
>>
>>Jon
>>
>>
>>
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>Addresses:
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>FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
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timg@...

>Moderator: pentam@... indigo_red@... davemucha@...

[Moderators]

>URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
>OFF Topic POSTS: General Machining
>If you wish to post on unlimited OT subjects goto:

aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.

>http://www.metalworking.com/news_servers.html
>
>http://groups.yahoo.com/group/jobshophomeshop I consider this to be a

sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.

>
>NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.

DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........

>bill
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>
>Yahoo! Groups Links
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Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com

Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
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List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO

OFF Topic POSTS: General Machining
If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
http://www.metalworking.com/news_servers.html

http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.

NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
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