Hi Dan,
Upgrade to a Tek 577...
or...
use a floating bias supply for the offset, perchance
a Lithium battery connected to a small pot bypassed
with a suitable capactior, in series with the gate
lead.
73 & Good morning,
Marv WC6W
http://wc6w.50webs.com/
--- Dan Sawyer <dansawyer@earthlink.net> wrote:
> All,
>
> I would like to use a Tek 575 to test several
> MRF-150 devices. The issue
> seem to be the gate bias and gate step are coupled.
> That is the bias
> range increases with the bias step value. The result
> is when measuring
> lower step values the bias range is insufficient to
> turn the device on.
> At higher step values the device is overdriven.
>
> Does anyone have a suggestion?
>
> - Dan
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