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7854 to 7804N Conversion PCB (K7-1286-XA). TOPIC WAS: 067-0912-00 needed


 

Hi Clark,
No. I have been working on something else I need much more. It will be done in 2 weeks and then I am free to start on something else.

I would like to make the 7804 Conversion board but first I need to get 5 other people willing to buy the boards which would help to justify the cost of laying out the PCB and purchasing the PC boards.

Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Clark Foley
Sent: Wednesday, October 21, 2020 12:17 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] 067-0912-00 needed

Dennis,

Did you ever make duplicates of that early 7804N conversion board (K7-1286-XA)?

Clark







--
Dennis Tillman W7pF
TekScopes Moderator


 

is that the same as the 7854 analogue test board?

Is so could be interested - what is the likely price?

David

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Dennis Tillman W7pF
Sent: 22 October 2020 22:28
To: TekScopes@groups.io
Subject: [TekScopes] 7854 to 7804N Conversion PCB (K7-1286-XA). TOPIC WAS: 067-0912-00 needed

Hi Clark,
No. I have been working on something else I need much more. It will be done in 2 weeks and then I am free to start on something else.

I would like to make the 7804 Conversion board but first I need to get 5 other people willing to buy the boards which would help to justify the cost of laying out the PCB and purchasing the PC boards.

Dennis Tillman W7pF

-----Original Message-----
From: TekScopes@groups.io [mailto:TekScopes@groups.io] On Behalf Of Clark Foley
Sent: Wednesday, October 21, 2020 12:17 PM
To: TekScopes@groups.io
Subject: Re: [TekScopes] 067-0912-00 needed

Dennis,

Did you ever make duplicates of that early 7804N conversion board (K7-1286-XA)?

Clark







--
Dennis Tillman W7pF
TekScopes Moderator


Clark Foley
 

David,

This board allows you to operate the 7854 as a 7804N. Analog scope functions only and without the readout, hence the N nomenclature. It was created early in the project to allow the analog scope guys to work independently of the digital scope portion. I have one of the prototype mainframes without the digital hardware and this little jewel lets me use the mainframe as a 400MHz scope.

The only thing that is peculiar is that the mode control buttons (LEFT, ADD, CHOP....)


Eric
 

When using the analog test board it makes the scope function as an Analog
scope you have to remove all the digital cards to use the analog test
board correctly with out bus conflicts.

Eric

On Fri, Oct 23, 2020, 7:11 PM Clark Foley <clarkfoley@...> wrote:

David,

This board allows you to operate the 7854 as a 7804N. Analog scope
functions only and without the readout, hence the N nomenclature. It was
created early in the project to allow the analog scope guys to work
independently of the digital scope portion. I have one of the prototype
mainframes without the digital hardware and this little jewel lets me use
the mainframe as a 400MHz scope.

The only thing that is peculiar is that the mode control buttons (LEFT,
ADD, CHOP....)






Clark Foley
 

Keyboard error...allow me to continue

The only thing that is peculiar is that the mode control buttons (LEFT, ADD, CHOP....) require initialization after each power cycle. There is no memory for momentary button. It's a way to put a donor mainframe to use after stripping some of the digital cards or for troubleshooting the analog section.

Clark


Glydeck
 

Dennis,

I’d be interested.

George

On Oct 23, 2020, at 4:15 PM, Clark Foley <clarkfoley@...> wrote:

Keyboard error...allow me to continue

The only thing that is peculiar is that the mode control buttons (LEFT, ADD, CHOP....) require initialization after each power cycle. There is no memory for momentary button. It's a way to put a donor mainframe to use after stripping some of the digital cards or for troubleshooting the analog section.

Clark