Thanks to everyone for the comments.
It does seem that the fluctuations in the output power meter readings are an
artefact of the sampling/averaging process that drives the meter display. I
will have a play with the multimeter options to see if there is a setting
which provides a more meaningful result when sending CW.
73, Brian VK3MI ZL1AZE
-----Original Message-----
From: Tim Ellison, W4TME
Sent: Tuesday, February 14, 2012 3:38 AM
To: Jim Jannuzzo
Cc: flexradio@flex-radio.biz ; t...@flexradio.com
Subject: Re: [Flexradio] FLEX-3000 FLUCTUATING CW OUTPUT POWER
You can try lowering those time values and see what happens.
Tim Ellison, W4TME
Product Management, Sales & Support
FlexRadio Systems^(TM)
4616 W Howard Ln, Suite 1-150
Austin, TX 78728
Phone: 512-535-4713 Ext. 223
Email: t...@flexradio.com <mailto:t...@flexradio.com>
Web: www.flexradio.com <http://www.flexradio.com>
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On 2/13/2012 11:31 AM, Jim Jannuzzo wrote:
So, you could go to Setup | Display tab, and change the Multimeter
options, correct? Which option would most effectively show the almost
real time power- decrease Multimeter Average Time, or increase one of the
related Refresh rates, or decrease one of hte Peak Hold times?
Jim KJ2P
> Date: Mon, 13 Feb 2012 10:44:36 -0500
> From: t...@flex-radio.com
> To: flexradio@flex-radio.biz
> Subject: Re: [Flexradio] FLEX-3000 FLUCTUATING CW OUTPUT POWER
>
> Ray hit the nail on the head. It does have to do with the sampling
> cycle frequency and the RF at that point in time.
>
> Tim Ellison, W4TME
> Product Management, Sales & Support
> FlexRadio Systems^(TM)
> 4616 W Howard Ln, Suite 1-150
> Austin, TX 78728
> Phone: 512-535-4713 Ext. 223
> Email: t...@flexradio.com <mailto:t...@flexradio.com>
> Web: www.flexradio.com <http://www.flexradio.com>
>
> logo
>
>
> On 2/13/2012 8:32 AM, Ray, K9DUR wrote:
> > Brian,
> >
> > I believe that that is normal. Without looking into the code to be
certain,
> > I would guess that the meter samples the output at some interval&
averages
> > the result. Depending upon how the samples line up with the cw
waveform,
> > the average power during any one sample period will vary.
> >
> > 73, Ray, K9DUR
> > http://k9dur.info
> >
/
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