jgray at zianet.com
Sat Oct 10 09:14:50 UTC 2009
Trigger levels are set to "Preset" for most steps. In step 18, I
verified that Preset is 0V and the Level voltage varied from
aproximately -1.3 to +0.6 volts. The manual specifies "approximately
-1.3 to +0.5 volts."
In step 15, the standard deviation was bouncing around between about
36-57pS. The manual says that less than 100pS is good.
Time for bed.
On Sat, Oct 10, 2009 at 2:32 AM, John Miles <jmiles at pop.net> wrote:
>> Thanks for the tip. I was very careful. Only one board was really
>> stuck. I left it alone for now.
>> Just for the heck of it, I did a few more steps in the Chapter 4
>> Operation Verification. As I said, discounting the bad BNC, step 13
>> reads aproximately 103.6nS, so I continued.
>> Steps 14, 15 and 16 are ok.
>> Step 17 shows 3.6nS (should be < 1nS). Period Compliment shows
>> -96.3nS. Something very wrong here.
> What are your trigger levels? A small departure from 0.00 volts could
> account for this.
> Also, what's the standard deviation when measuring its own OCXO?
> -- john, KE5FX
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