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Triggering TRBO Panic externally

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KO6UX
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Joined: Mon Dec 21, 2009 12:43 pm

Triggering TRBO Panic externally

Postby KO6UX » Tue May 18, 2010 8:49 am

Hi all,

Does anyone know if its possible to trigger the Panic setting on a TRBO portable externally, such as through an audio accessory attached to the radio? I know on some Motorola portables you can trigger the panic by pulling a certain pin on the accessory connector low.

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bezking
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What radios do you own?: /\/\

Re: Triggering TRBO Panic externally

Postby bezking » Tue May 18, 2010 4:16 pm

I saw an install with the Trbo mobile in a Toyota Camry where they mounted a button somewhere in the car and when it was pressed the radio's emergency activated, so I think it's possible but don't know exactly how he did it.
The bandsplit is only a suggestion.

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khw
Posts: 41
Joined: Sun Jun 24, 2007 8:51 am
What radios do you own?: Quantars, Quantros, APX, XTS..

Re: Triggering TRBO Panic externally

Postby khw » Wed May 19, 2010 5:40 pm

According to the service manual, it's generally programmed via CPS on Prgm_In_4 which translates to pin 23 on the rear connector.

Excerpt:

23 Prgm_In_4 (Emergency) Programmable Input with dedicated function for Emergency Switch

• Prgm_I_4 (Emergency): Dedicated input that is having the function of Emergency
(Emerg_Sw). This signal connects to the MAKO EMERG_PB (U3200 pin F4) as an input.

Hope that helps,

Kevin
Kevin

KO6UX
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Re: Triggering TRBO Panic externally

Postby KO6UX » Thu May 20, 2010 10:31 am

That's for the mobile. I am trying to trigger panic with a portable.

From looking at the Motorola RSM with a panic switch it looks like the panic is triggered by pulling pin 12 on the accessory connector low. However, this appears to only work when an IMPRES RSM is attached to the radio. Since the setup I am using is not IMPRES, pulling pin 12 low doesn't trigger the panic button.

I guess the question becomes: how does the TRBO know that an accessory is or is not IMPRES.


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