[time-nuts] Tbolt LCD Monitor - No DAC reading

David Bobbett d.bobbett at tiscali.co.uk
Thu May 12 20:07:45 UTC 2011


That info would certainly increase the chances of it being an issue with 
handling -ve numbers. I wonder if anybody on time-nuts has an LCD 
monitor which can display negative values?


David, G4IRQ



On 12/05/2011 16:58, Jim Hall Sr. wrote:
> I have the same symptoms. Two Thunderbolts, #1 has DAC voltage of about (+) 0.4 V. Both Lady Heather and the LCD Monitor read the voltage correctly. Thunderbolt #2 has a DAC voltage of about –.1 V. Lady Heather reads the voltage correctly but the LCD Monitor shows: 0.0000. Tends to make one suspicious that minus DAC voltages could be the problem.
> Jim Hall
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