Subject: From: Date:

RE: [ECS] Dancraft IR-3 ext. rcvr. gbailey Fri, 12 Feb 1999 23:47:25 -0700

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The Red October box uses a small series resistor of 15 ohms on the receiver
input (simple protection). This then drives a CMOS gate, TTL compatible,
running on 5 volts. The line is also diode clamped to 5 volts, so even if
you put 12 V on it, it is clamped to 5.
The input MUST be a modulated signal, so the output of a Radio Shack IR
receiver module which is demodulated won't work reliably.
The Red October measures the modulation, and reproduces it on sending, which
is why it is able to reporduce a large majority of IR signals.
Anyway, if it isn't working, make sure the signal is going less than 0.7
volts and higher than 2.5 volts. Make sure it is also modulated.
If it isn't, you can always add a modulator to the signal :-)


-----Original Message-----
From: Bill Walters [mailto:wtwalters@home.com]
Sent: Friday, February 12, 1999 5:28 PM
To: ecs-list@netbloc.com
Subject: [ECS] Dancraft IR-3 ext. rcvr.


All -

Anyone have or know the input specs for the external IR receiver input
of the IR-Jukebox 3 (aka Red October) ?

Does it use the "standard" 12vdc signal from most external IR receivers
or will it accept 5 volt TTL signals?

Anyone know?

Bill Walters

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