[hpsdr] Updated Hermes User Guide

[RW Mail List]

Hi,

I'm confused, is this indicating that the TAPR Hermes PCB's are different to 
the assembled production boards? Think there was some layout changes that 
improved noise rejection, like repositioning the power connector etc. Are 
the TAPR PCB boards the new (latest) or old version?

Would like to know before I order a Hermes PCB board.

Roderick Wall, vk3yc.



-----Original Message----- 
From: Kjell Karlsen
Sent: Monday, July 23, 2012 2:29 AM
To: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] Updated Hermes User Guide

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

Hi.

This is as an information to the Hams that bought the extra Hermes PCB´s
from TAPR: There are some differences of the connections to J16. There was
a misunderstanding during the PCB layout that lead to this. The correct
connections are as follows:

Pin  1= PTT IN
Pin  2= Left Line IN.
Pin  3= Right Phone OUT.
Pin  4= Spkr 2 OUT.
Pin  5= Spkr 1 OUT.
Pin  6= Analogue input 1.
Pin  7= Digital input 4.
Pin  8= Digital input 3.
Pin  9= Open Collector 0 OUT
Pin 10= Open Collector 2 OUT.
Pin 11= Open Collector 4 OUT.
Pin 12= Open Collector 6 OUT.
Pin 13= PTT OUT
Pin 14= GND.
Pin 15= Right Line IN.
Pin 16= Left Phone OUT.
Pin 17= Digital Input 1.
Pin 18= ???. (NC)
Pin 19= Analogue Input 2.
Pin 20= ??? (NC)
Pin 21= Digital Input 2.
Pin 22= Open Collector 1 OUT.
Pin 23= Open Collector 3 OUT.
Pin 24= Open Collector 5 OUT.
Pin 25= Open collector ref.
Pin 26= ??? (NC)

The power input connector, J18 (6 pins instead of 4) is different from the
production board and it is also placed different.

NB: As far as I know, only 14 PCB´s exists with this configuration! (Abhi
may have some too.)

If someone is interested in the right schematic for this PCB, please
contact me and I´ll mail it to you.

73, Kjell




På Sun, 22 Jul 2012 14:21:38 +0200, skrev Phil Harman <phil at pharman.org>:

> ***** High Performance Software Defined Radio Discussion List *****
>
> All,
>
> There is an updated version of the Hermes User Guide (V1.5) available 
> here:
>
> http://svn.tapr.org/repos_sdr_hpsdr/trunk/Hermes/Documentation
>
> Thanks to all those who provided feedback on the corrections/additions 
> required and in particular for the detailed review undertaken by Peter, 
> VK3PF.
>
> Could those maintaining web sites please link to this version of the 
> guide.
>
> Thanks
>
> 73 Phil...VK6APH
>
>
> _______________________________________________
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>


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