[hpsdr] Excalibur checkout

Graham / KE9H KE9H at austin.rr.com
Sat Jan 9 18:39:32 PST 2010


Geoff:

You are clear to power it up.

Several have reported different values of resistance to ground on the 5 
Volt line.
Most likely due to a difference in the voltage of your Ohmmeter, and not 
a problem.

You are mostly looking for shorts, and you don't have any of those.

--- Graham

==

Geoff wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Guys,
> 	I'm trying to complete the pre-power checkout on my just assembled Excalibur. 
> I show no shorts to ground on atlas +12V or +5V. For the +6V test point I 
> have about 2.4K to ground (OK). For the +5V test point I show 15.1K to ground 
> versus 4.1K expected. For the +3.3V test point I show 111.9K to ground (sort 
> of close). I re-checked these with both the lower pin of J3 and the shield of 
> the lower BNC. I also tried a second meter.
> 	Any advice you can give with respect to these anomalies would be appreciated. 
> I haven't tried a "smoke test" yet.
>
> 73 de Geoff vk2tfg.
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