Eric,
One of the best features of SDR-1000 is the present metering system. It has
already replaced expensive spectrum analyzers as a high quality narrow band
laboratory instrument. Keep it as the default set-up. Many users (especially
the professionals) like to see on the spectrum, panadaptor and S-meter
displays what happens at the antenna connector level. Make the other
suggested display modes selectable only under the Display tab of the Setup
window.
By the way, my display range is usually set up from -170 to 0 dB. I want to
see the noise floor changes in all conditions including the spurious signals
generated by the DDS and the possible start of the system saturation by the
overloading signal to be measured.
Ahti OH2RZ
----- Original Message -----
From: "Eric Wachsmann - FlexRadio" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; "'Alan Davis'" <[EMAIL PROTECTED]>;
<FlexRadio@flex-radio.biz>
Sent: Monday, November 07, 2005 10:42 PM
Subject: Re: [Flexradio] AGC suggestion
Correction: The panadapter is shown pre-filter. The Spectrum display
mode should be shown post-filter (so you can see the skirts). The
multimeter is post-filter, pre-AGC.
Eric Wachsmann
FlexRadio Systems
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
radio.biz] On Behalf Of Eric Wachsmann - FlexRadio
Sent: Monday, November 07, 2005 2:38 PM
To: 'Alan Davis'; FlexRadio@flex-radio.biz
Subject: Re: [Flexradio] AGC suggestion
Alan,
I agree that we need to have some sort of RF Gain control on the front
panel. It remains to be seen whether this should just control the Max
AGC Gain or some combination of that and the AF and/or other controls.
I have to disagree with the other two suggestions though, and here is
why: The spectrum/multimeter are shown BEFORE the DSP. This includes
the AGC, filtering, etc. This is what makes this like a true spectrum
analyzer as it is showing you what is seen by the antenna. I don't
think we want to involve the AGC in these types of readouts just based
on that idea.
