Re: KAT5 Scart and IR Distribution

["Frank Mc Alinden" <frankmc@xxxxxxxxxxxxxxxx>]

Hi Stuart / Keith

I made a 2x2 splitter meaning 2 groups of 2 leds in series and the 2 groups
are wired in parallel....
I also put a 100 ohm resistor in series with the signal to both groups....

The drive current wasnt enough to see any activity on a red led inserted
into the splitter but i had a emitter plugged in and located adjacent a
usbuirt and it responded....Have tried lowering the series resistor but the
drive current doesnt appear to go any more than .2mA....

Keith i assume you have a current limiting resistor in series with the ir
out ??

Frank

----- Original Message -----
From: "Stuart Whyte" <groups@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Monday, January 02, 2006 10:18 PM
Subject: RE: [ukha_d] KAT5 Scart and IR Distribution


> Hi Keith,
>
> 1)  Thanks for the info.  This has sorted it nicely.
>
> 2)  Is there an "optimum" that I should try?  For what
reasons will I need
> to change up or down??  Also I think this might  be what Frank is
looking
> into. Frank??
>
> Cheers
>
> Stuart
>
> ________________________________
>
> From: ukha_d@xxxxxxx on behalf of Keith Doxey
> Sent: Sun 01/01/2006 21:17
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] KAT5 Scart and IR Distribution
>
>
>
> Hi Stuart
>
>> Subject: [ukha_d] KAT5 Scart and IR Distribution
>>
>> 2 questions for the price of 1 here - probably directed to Keith
and
>> Frank.
>>
>> 1)  My old setup was sky+ to KAT5 TX via SCART then KAT5 RX to TV.
>> In this config, SKY+ would "seize" control of the TV
whenever it was
>> switched on, without the need for me to press AV.  IF I removed
the
>> Sky+ scart, TV would revet back to DVB.  Ive now put an AV switch
in
>> line that uses S-Video.  So (no surprises), I have to now press AV
to
>> access the switcher everytime the TV is switched on.  This is not
>> having a very high WAF at the moment, so need some sort of
>> resoulution.  I understand WHY this is happening, but not how to
fix
>> it.  Is there anything that can be done to the RX for example to
make
>> it think there is a Scart "seize" signal on its other
end??
>>
>
> Two ways of doing this.
>
> 1. Program a universal remote control for a "Sony Laserdisk
Player" and
> than
> you can manually force the KAT5 output as follows
>
>        0 = Off
>        1 = Full Screen 4:3 (+12V)
>        2 = Wide Screen 16:9 (+5V)
>        3 = Follow Pin at KAT5 transmitter (Default after power up)
>
> 2. Use the Pin8 signals from the source equipment. Take each Pin 8
from
> the
> sources and connect them via diodes to Pin8 of the KAT5 TX SCART
>
> eg
>
> Device        Diode           KAT5
>
> Sat Pin 8------>-----
> DVD Pin 8------>---------- KAT5 TX Pin8
> ??? Pin 8------>-----
>
> The drawback with method 2 is that any of the devices will force the
TV to
> switch if its Pin8 is active. Any device signalling Fullscreen will
> override
> any device that is signalling Widescreen.
>
>
>> 2)  Continuing with the above config, I have an rf2link
>> (http://www.pacelink.co.uk/rf2link.htm)
connected between the KAT 5
>> and Sky+.  With the addition of the switched, I would now like to
add
>> 2 IR emmiters for the DVD and switcher.  Im not interested in
zoning
>> or anything like that, just to have the IR out of the KAT5 TX have
3
>> outputs.  What would I need to accomplish this, as I think a
complete
>> FiRM setup would be an overkill.  Frank, would just a splitter do
the
>> job??
>>
>
> You could try a simple resistive splitter. Take the output from KAT5
and
> feed each emitter and the RF2link via individual resistors. Try 270R
as a
> starting point and increase or decrease as required. I wouldnt drop
below
> 100R though.
>
> If you need any more info give me a call. You have the number :)
>
> Regards
>
> Keith
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
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