Re: [ARMini-support] armini-support Digest V1 #114
- From: A Rawnsley <rcomp@xxxxxxxxxxx>
- To: armini-support@xxxxxxxxxxxxx
- Date: Mon, 11 Nov 2013 17:30:10 GMT
In message <53a8dcefbcchris@xxxxxxxxxxxxxxxxxxxxx>
Chris Johnson <chris@xxxxxxxxxxxxxxxxxxxxx> wrote:
> In article <53a8db2b64jcgl@xxxxxxxxxxxxxxx>,
> Jim Lesurf <jcgl@xxxxxxxxxxxxxxx> wrote:
>> So I'd agree that the problem may be due to the modes which a
>> PandaBoard can drive are best kept below 50Hz, but the monitor
>> wants 50Hz or more. Hence they don't really make an ideal match.
> I do not think that is the problem. My PandaBoard ES (not from
> R-Comp) is running at a screen resolution of 1920x1080 @ 60 Hz and is
> quite stable. I thought the PandaBoard ES would do 1920x1200 @60Hz.
> Ask on the ROOL forum.
Before you say that, please try testing a full-colour-spectrum on it
and check for any digital corruption in sepecific colours. The Panda
will happily run at 60hz, but will typically introduce green-tint
digital distortion in <1% of colours. I run it like this at shows,
and no-one reports seeing any problems. However, if I show specific
test images, it can be quite obvious.
It's not like Beagle which simply couldn't do higher refresh rates -
it's much more subtle, but the solution is the same - dropping the
bandwith requirements for the mode (ie. effect: reducing refresh rate)
removes the problem.
Whilst this is fine for general use, I'd imagine photo work would be
less satisfactory.
Kind wishes,
Andrew
--
R-Comp
22 Robert Moffat, High Legh, Knutsford, Cheshire WA16 6PS
Tel: 01925 755043 Fax: 01925 757377 http://www.rcomp.co.uk
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