[Elecraft] P3 - Power up glitches with K3

[Mike K2MK]

Hi Phil,

My time proven technique to find the source of K3 or P3 behavior
abnormalities is to blame the computer first. Disconnect the serial cable to
your PC then see if the problem still exists.

73,
Mike K2MK


Phil Westover wrote
> 
> I've got a P3 connected to my K3 with all the proper connections.  
> 
> K3 info:
> s/n 1206
> Firmware:  MCU 4.36, DSP 2.73, Flash Parameters 1.14
> P3 info:
> s/n 1490
> Firmware:  1.09 
> 
> When I first hooked up the P3 a few months ago, I set the jumpers (and
> connected a power cable) to power it up from the K3.  At that time, I got
> immediate connection and immediate "talking" between the P3 and the K3. 
> Frequency and filter width showed up correctly immediately at power up.  
> 
> After a couple of months, it appears to not immediately 'talk' with the K3
> upon power up.  Sometimes no frequency nor filter bandwidth are displayed. 
> Sometimes frequency is displayed, but no filter bandwidth. Sometimes the
> bandwidth shows up and is shifted off the right.  In all cases, I can
> manually power down the P3 and toggle it back up, and all those things
> eventually show up properly.  Sometimes it takes several on-off toggles (5
> or more).  In one instance, it didn't come up after several toggles, then
> about 10 minutes later they started talking correctly.
> 
> Cables are tightly attached.  There is no movement to the rigs during use. 
> This appears to be software related, not mechanical.
> 
> Ideas?
> 
> - Phil, WA7URV
> 


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