[OZAPRS] Maxon DM-2550 Carrier Detect out?

[Mike Townsend]

Howdy,
If I recall correctly this pin is floating. You can check it for correct 
Carrier Detect action with a ohmmeter between pin 6 and earth as a carrier

comes and goes it should switch between low and high or is it high and low

ohms. Also if you play with the squelch, the pot on the lower board that
is 
adjusted by dropping a suitable tool through the hole on the upper board 
between the two flexi cables you should also be able to toggle pin 6 CD 
output.
If you connect the pin to a 5v rail through a 10k resistor you should then

see it toggle with a voltmeter. This is how I coupled it to a Tinytracker 
and then selected 'Invert CD IN' in the Config application.

Mike, VK2INT.

----- Original Message ----- 
From: "Michael Carey" <michaelcarey at internode.on.net>
To: "VK / ZL APRS Users" <ozaprs at aprs.net.au>
Sent: Tuesday, December 19, 2006 12:26 PM
Subject: [OZAPRS] Maxon DM-2550 Carrier Detect out?


> Hi Everybody,
> I've got a Maxon DM-2550 (bought from Garry Nosworthy) which I'm about
> to pair up with a WXTrak at my local club station. In the service
> manual, it mentions that Pin 6 on the 9-pin connector is Carrier Detect.
> But my DM-2550 doesn't seem to toggle this pin when receiving a signal.
> Is there something I need to do to enable this? There is mention in the
> PDF. that Power Save mode can only be used when CD isn't being used. Do
> I need to reprogram my unit?
> Regards,
> Michael Carey
> VK5ZEA
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs
> 

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