[hpsdr] Multiple Rx -- ghpsdr3 on Windows - Success for the most part

[Dave Larsen]

Rick and Dave --

I had the same issue on my power supply with the same solution all is
working fine on my quad core linux.  On the PC (2.6 mHz p4) if I add
more that on receiver running on the PC, I get distortion as well.

   Dave, KV0S

On Sun, 2010-07-04 at 10:58 -0400, Richard Stasiak wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> GM Dave
> 
> I shorted out FU2 (5V regulator) fuse on LPU and all is now well on  
> the hardware front.  No more sudden darkness on the LED's on the HPSDR  
> boards.
> 
> Have ghpsdr3-windows server and 3 instances of dspserver running on  
> the shack computer (XP 32 bit, 3.2 Mhz. P4).  CPU running at ~70%.
> 
> I am listening to four receivers in my living room on a MacBook Pro  
> running four instances of jmonitor in OSX 10.6.2. Connected on a  
> wireless network.  It has been stable for the past hour.
> 
> Once I loaded the second instance of dspserver on my XP machine the  
> audio on the first monitor became distorted.  The audio continues to  
> be distorted on all instances of jmonitor with four receivers running.
> 
> Should I decrease the sampling rates to 48 khz. to reduce the load on  
> the XP machine?
> 
> Thanks to you Dave, John G0ORX, Bruce W1BW, Kirk KD7IRS and all of the  
> HPSDR community who have helped, for all of your hard work on this  
> code.  It is really neat to be able to play with 4 RX's at the same  
> time, especially remotely.
> 
> 73
> 
> Rick ve3mm
> 
> 
> On 4-Jul-10, at 4:50 AM, David McQuate wrote:
> 
> > ***** High Performance Software Defined Radio Discussion List *****
> >
> > Yes, Mercury 3.0 does draw significantly more current.  Ozy 18 +  
> > Mercury 3.0 draws about 1.43 amps from the 5V supply.   Looks like  
> > users of the LPU will need to replace the resettable fuse with a  
> > higher current fuse, or jumper across it.
> >
> > I see I omitted the file msecsleep.exe from the LoadMercuryFirmware  
> > folder.  Without the required waits,  re-programming of Ozy as a  
> > Byte-Blaster fails, and quartus_pgm doesn't find a USB Blaster.
> >
> > I've added that file to the LoadMercuryFirmware folder on the SVN.
> > 73,
> > Dave
> > wa8ywq
> >
> > Richard Stasiak wrote:
> >> Hi Dave and Dave
> >>
> >> Thanks for the heads up on the drive designation.  I should have  
> >> picked that one up myself.
> >>
> >> Anyway there is still something missing in that directory for  
> >> updating the Mercury FPGA.  I'm not sure what it is.  The update  
> >> still crashed, this time looking for a hardware cable (?).
> >>
> >> I was able to get the FPGA loaded by moving your revised update  
> >> batch file and the two mercury4receiver files into Phil's Update  
> >> blaster directory and running the update from there.
> >>
> >> With the code loaded I now have another issue, hardware this time.   
> >> The radio is shutting down just after I start the first receiver.   
> >> I haven't started troubleshooting yet, but I suspect the thermal  
> >> fuse in the LPU is not happy.  The new Mercury code must be drawing  
> >> a lot more current in the FPGA.  I will check it out tomorrow.
> >>
> >> 73
> >>
> >> Rick ve3mm
> >>>>
> >>>>
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> >>
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