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1. 09:30 AM - Re: icom A210 upgrade (Robert L. Nuckolls, III)
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| Subject: | Re: icom A210 upgrade |
At 11:47 AM 8/2/2014, you wrote:
>
>Icom and their vendors state that the A210 com radio is a slide in
>replacement for the A200 as long as you are not using the built in
>intercom. However the A210 also outputs rs232 data on pin 1 of the
>card edge connector and that pin is grounded to make the panel light
>work on the A200. I can spend a lot of time trying to disconnect
>that pin and hope nothing else gets interfered with in the tight
>space behind my panel but I've been trying to determine if leaving
>that pin grounded will actually harm the data output circuitry on
>the A210? I'm not likely to ever use the data output but if someone
>knows that there is little risk of leaving it grounded, I'd sure
>appreciate hearing about it.
It appears that Pin 1 on the A200 was
ground for the panel lighting.
The A210 Service Manual says the RS232
input/output is managed by an Analog Devices
ADM202. In the data sheet for this part
we find the statement:
Emacs!
It appears that nothing untoward will
happen if you don't unground pin 1.
Bob . . .
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