ELECRAFT KAF2 Instrucciones de operaciones descargar pdf (Pagina 3)

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Construction Manual for the K2DI v.III and K2DI-PCI boards © EA3BLQ - Revision June 2005

I N D E X

Foreword ..................................................................... 3

K2DI v.III Digital Interface ............................................ 4

Picking the received AF signal up from P2 at the KAF2 or

KDSP2 boards .............................................................. 9

K2DI-PCI Computer Interface....................................... 10

Pictures and Schematics .............................................. 15

How to install the separators ........................................ 25

Schematics ................................................................ 29

FOREWORD:

This document could be considered as the 4

and last installment of my Digital Interface

Saga. The other three installments or episodes being: “K2 Digital Interface v.I”, “K2 Digital

Interface v.II.2” and “DI v.II.2 installed into the K2/100”.

For those of you who do not know it; let me succinctly explain this part of the story. If you

already know it and think I am being too repetitive, please accept my apologies and thanks

for your bearing with me.

It was back in summer 2002, when Elecraft launched the KAF2 option, -latter on they

launched the KDSP2 as a DSP filter alternative to the KAF2-, when I discovered that my DI

v.II.2, Digital Interface, could not be installed into a Complete Basic K2, featuring all the

options: KDSP2 or KAF2, KAT2, KIO2 and KBT2, nor into the Integrated K2/100, because in

neither of the two set-ups there was any free space available for my PCB. At the time it

could only be installed in a NO KAF2 or NO KBT2 configuration of the K2 as explained in the

K2 Digital Interfacev.II.2

PDF file.

From that moment on I promised myself I had to find a way out of this “cul-de-sac”. It was

a personal defy I had to overcome. From time to time I gave a thought to the challenging

problem and it was by mid November 2003 that I was suddenly struck with new ideas that

gave rise to a new design of my Digital Interface, the K2DI v.III. When I tested the

prototype board, a new idea gave birth to the design of the K2DI-PCI, Computer Interface,

as an optional daughter board of the DI.

The boards are silk-screened and double sided with plated-through holes, as usual.

The main features of both circuits are explained in the forthcoming pages of this document.

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