[DSP-10] Problems with Serial Shift Registers.

[Chuck E. Swedblom]

Hi Mike,

My question is:  Why are my results of UDIAG2 on U107 not as they
are show in the "PLL Diagnostics" sheet?

I get: U107-15  0V
         U107-1   0V
         U107-2   0V
          U107-3  0V should be 5V
          U107-4  5V should be 0V
          U107-5   0V
          U107-6   0V
           U107-7  0V should be 5V

This DSP10 has been working flawlessly for three years
prior to this failure.  I am using the KDSP-10.

Answers follow  your questions.

Thank you for your help.

73,  Chuck  WA6EXV


On Thu, 09 Feb 2006 18:14:20 -0800 kd7ts <kd7ts at ispwest.com> writes:
> Hi Chuck,
> 
> I looked over my notes on this, and didn't see anything that fits 
> your symptoms. The +9 on U6 points to a lock problem on the 19.68 
> synthesizer. From your description it seems most likely to be a 
> programming problem with the 145170 registers. Programming is only 
> done once when the program is loaded.
> 
> 
> I do have a couple of questions though. 
> 
> Have you ever plugged P-101 in backwards then powered up the DSP-10 
> ?

NO!  I built the box so that it is impossible to reverse P-101.

> 
> Is hardware set to 1 in the config file, (UHFA.CFG)

Yes, the hardware is set to 1.

> 
> What versions are you using for UHF3.EXE and UHFA.EXE ? 

I am using UHFACFG2 and UHF3x.

> 
> 73 Mike KD7TS
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