[hpsdr] OZY Startup Info

[Christopher T. Day]

Phil_C,

Phil_H and I got very confused about this on the TeamSpeak Friday. By
following the traces and buzzing it out, we both concluded that the mark
on the silk-screen labeled the anode connection. Phil_H checked his
diodes with a DVM and for his LEDs concluded that the green marks were
on the anode. However, I checked the LIT-ON datasheet for these devices
and concluded that the green dots should be marking the cathode of the
LEDs. See the data sheet here:
http://rocky.digikey.com/WebLib/Lite-on/Web%20Data/LTST-C171CKT.pdf

and a photo here:
http://rocky.digikey.com/WebLib/Lite-on/Web%20Photos/LTST-C171AKT,LTST-C
171CKT,LTST-C171EKT,LTST-C171GKT,LTST-C171YKT.jpg

I put my diodes down with the green dots to the right; D13 lights when I
apply power (the FPGA was not down at that point). Phil_H put his down
with the green dots to the left and his light as well.

On your pictures, you have the green dots to the left. I presume they
light.

On my Atlas, I have the green dots _away_ from the 'A' on the
silk-screen and they all light. (They are green light versions of the
same part as Ozy.)

Does any one have any idea what is going on?


	Chris - AE6VK



-----Original Message-----
From: Phil Harman [mailto:pvharman at arach.net.au] 
Sent: Monday, July 17, 2006 7:21 AM
To: Philip Covington; HPSDR discussion list; Lyle Johnson; Bill Tracey;
Steven Bible
Subject: Re: [hpsdr] OZY Startup Info

***** High Performance Software Defined Radio Discussion List *****

Hi Phil,

I've just built my Atlas board and the band on the LEDs is the cathode
on 
these and not the anode. Are these the same LEDs that we use on the OZY 
board?

Phil...


----- Original Message ----- 
From: "Philip Covington" <p.covington at gmail.com>
To: "HPSDR discussion list" <hpsdr at hpsdr.org>; "Lyle Johnson" 
<kk7p at wavecable.com>; "Phil Harman - VK6APH" <pvharman at arach.net.au>;
"Bill 
Tracey" <kd5tfd at arrl.net>; "Steven Bible" <n7hpr at tapr.org>
Sent: Monday, July 17, 2006 9:52 PM
Subject: Re: OZY Startup Info


> Also, for the OZY alpha builders please refer to:
>
> <http://hpsdr.org/wiki/index.php?title=OZY_REVA_ALPHA_REVLIST>
>
> for the proposed changes to the alpha boards.
>
> 73 de Phil N8VB
>
>
> On 7/17/06, Philip Covington <p.covington at gmail.com> wrote:
>> Hi all,
>>
>> Please check the HPSDR Wiki page:
>>
>> <http://hpsdr.org/wiki/index.php?title=OZY_REVA_STARTUP>
>>
>> for information on startup/assembly of the OZY alpha boards.  I won't
>> be posting the updates to the mailing list because most people
>> subscribed won't be interested.
>>
>> For those building the OZY alpha boards, please refer to the above
page 
>> often.
>>
>> 73 de Phil N8VB
>>
>
>
>
> -- 
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14/07/2006
>
> 



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