[hpsdr] ADC for VSWR Measurement

[Gerd Loch]

Hi Phil,

thanks for the answer.

For my understanding: how are you going to feed the I2C signals on both Alex
RX and TX - 2 connectors on the ribbon cable?
Where is J2 on Alex with the analog signals FWD/REF PWR connected to?

73, Gerd
DJ8AY


-----Ursprüngliche Nachricht-----
Von: Phil Harman [mailto:phil at pharman.org] 
Gesendet: Samstag, 23. August 2008 13:17
An: g.loch at nt-electronics.de; hpsdr at hpsdr.org
Betreff: Re: [hpsdr] ADC for VSWR Measurement

Hi Gerd,

If it  is already a digital signal at say 0-3v then you could connect it 
directly to a spare pin(s) on the Atlas bus. The currently used pins are in 
SVN under

/trunk/Atlas/Atlas to Janus V2 - OzyV2-Penelope Interface.xls.

It they are analogue signals then you could use some of the spare four ADC 
inputs on Penelope at either P4 or J6.

The Forward and Reflected power signals from the Alex LPF filter board will 
be available on the ribbon connector that connects Alex  to Mercury. From 
Mercury you will be able to jumper across to Penelope to pick up the ADC and

hence monitor Fwd/Ref volts and then calculate  Power out, Z,  SWR etc on 
the PC. With 100w out of Alex  the log corrected directional coupler will 
read down to 100mW. This can be set lower if you want to run your PA below 
the 100w level.

73's Phil....VK6APH




----- Original Message ----- 
From: "Gerd Loch" <g.loch at nt-electronics.de>
To: <hpsdr at hpsdr.org>
Sent: Saturday, August 23, 2008 5:35 AM
Subject: [hpsdr] ADC for VSWR Measurement


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> Where can one connect the Dout of the ADC (VSWR of a PA) to in the HPSDR
> hardware ?
>
> 73, Gerd
> DJ8AY
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