Good afternoon all. Today I decided to dust of my W2 and put it back in
service but had something odd happen after updating the firmware (from
0.94 to 1.00) and was wondering if anyone else had seen this. The
firmware load went fine and afterward everything was working great
except for adjustment of the SWR alarm trip point. Sending the [ and ]
commands with the W2 Utility always resulted in a response of [00; or
]00; regardless of how many times they were sent. This happened whether
or not the alarm function was enabled or a sensor was connected to the
W2. I also tried powering it off then back on, restarting the W2
utility, etc. with no changes. All other commands worked as expected. My
computer (Windows 7) doesn't have a real serial port so I'm using the
KUSB cable with FTDI chipset which has never given me any trouble.
I noticed that firmware v0.94 did not have this capability and I had
never used the alarm function before anyhow. Maybe that had something to
do with it? I finally thought that maybe a plug had to be in the 'REM'
jack on the back of the unit for the alarm function to respond so I
tried that. The first reponse was again [00; but after that it came back
with [50; indicating it was set for 5.0 and it started working as it
should. I was then able to vary the trip point up and down (from 1.2 to
5.0) and get the response I expected. After that I tried removing the
cable and it kept working, power cycling the unit (including turning off
the power supply it was connected to) with and without the cable and it
kept working. It seems to be fine now, so I'm not sure what I did or
didn't do. I built the W2 from the "kit" if that matters, but it has
always worked great excluding this. Thanks for your input.
Matt / KG6KSL
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