A digit DG7 from the LED display driver board is used to adjust the
brightness of the meter lamp thru a small op amp ckt. I figure that the duty
cycle of DG7 should remain the same, but maybe the height of the pulses
changes a little as LEDs are turned on by the LED display driver board and
the integrating meter brightness ckt is a little sensitive to the amplitude
of these pulses.
I don't quite understand the original post...the dimming due to VOX clears
up when going into and out of the menu? Mine doesn't. Maybe you have a
resistance problem as well.
Chuck, KE9UW
> -----Original Message-----
> From: tentec-bounces@contesting.com
> [mailto:tentec-bounces@contesting.com]On Behalf Of Bill NY9H
> Sent: Thursday, February 26, 2004 8:36 AM
> To: tentec@contesting.com
> Subject: Re: [TenTec] OMNI 6 Display glitch
>
>
>
> >
> >i noticed that since day one... engaging either the split or
> vox dims my
> >lights.
> if you turn on both functions the dial gets even dimmer....
> yet if you xmit at full power the lights don't dim with
> that load....
>
> i actually looked at the schemo last year, but got distracted,
>
> my argonauts don't do that.
>
>
>
> bill
>
>
>
>
>
>
>
> >Hi Guys,
> >
> >Has anyone has their S meter and LED display lighting
> >dim randomly upon occasion? The S meter lamps and LED
> >digits both are tied to the display driver board which
> >accepts serial commands from the logic board. If I
> >hold the LOCK key until CHOOSE displays then tap it to
> >clear the display returns to normal intensity. Has
> >anyone seen this or found a cure outside of cleaning
> >the driver board connectors?
> >
> >Thanks,
> >Don Rasmussen
> >Carlsbad, Ca.
>
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