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Thread: Allowable ICD length
face BY : John email (remove spam text)

Hello Anthony & PIC.ers,

My workshop pc is in a more-or-less fixed position, while the 16f877
target is a machine sitting outside under a car-port & weighs 250kg.
Definitely not mobile, that one.

I started by making a twp comms extension cable between the ICD and
16f877 header extension of  10.4 metres, knowing it was much longer
than I really needed.  It performed poorly, with many hang-ups, GPFs
etc., and was generally painful.
After halving the length to 5.2m it worked perfectly & I was still
*just* able to string it out to the target.

Hope this helps, as un-scientific as it is....

best regards,   John

PS  For the SI-challenged,          5.2 metres  =  17 foot and a wee bit.

>Date:    Wed, 31 May 2000 14:05:31 -0500
>From:    Anthony Clay <KILLspamzarthragspamspamINTCON.NET>
>Subject: Allowable ICD length
>I am about to start experimenting with this ICD Module today, after I'm
>with the documentation.  Concerning the "telephone cable" between the ICD
>and header, how long can it be?

e-mail from the desk of John Sanderson, JS Controls.
Snailmail:          PO Box 1887, Boksburg 1460, Rep. of South Africa.
Tel/fax:            Johannesburg  893 4154
Cellphone no:   082 469 0446
email:                jsandEraseMEspampixie.co.za
Manufacturer & purveyor of laboratory force testing apparatus, and related
products and services.

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See also: www.piclist.com/techref/microchip/devprogs.htm?key=icd
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