[Elecraft] Fwd: Take Two: 2000A RCU and K3 CAT

[Hank Garretson]

---------- Forwarded message ----------
From: Hank Garretson <w6sx at arrl.net>
Date: Sat, Feb 22, 2014 at 9:36 AM
Subject: Take Two: 2000A RCU and K3 CAT
To: acom-list at yahoogroups.com


I moved the Y-cable to between the P3 and computer. Everything is now
working perfectly. There is stuff going on between the K3 and P3. The
computer cable out of the P3 looks like a K3 to both the computer and to
the 2000A RCU.

73,

Hank, W6SX


On Sun, Feb 16, 2014 at 1:42 PM, I wrote:

Just got the new ACOM 2000A RCU. Hooked it up to my K3 and N1MM Logger
> using Figure 7-2 CAT Connection by RS-232 Y cable.
>
> Also have the P3. Y cable is between K3 and P3. A RS-232 cable goes from
> P3 to computer.
>
> K3 baud is set at 38,400.
>
> RCU is set for CAT-K3.
>
> It works with hiccups. 2000A follows K3 frequency. When I change band or
> band segment, I hear the 2000A stepped motors--just as expected and wanted.
>
> BUT, with K3 sitting on a steady frequency, the ACOM hiccups. At random
> intervals (for example: 8 seconds, 8 s, 61 s, 10 s, 20 s, 15 s, 23 s, ...)
> I hear the 2000A stepped motors as if 2000A is changing frequency. RCU
> frequency segment indication momentarily changes to a different, random
> frequency segment and then goes back to the right segment.
>
> Seems like a polling issue, but I don't have the foggiest.
>
> Perhaps K3/P3 should be treated as a single unit, and I should put the Y
> cable between P3 and computer?
>
> Help please. Suggestions?
>