Author Topic: serial cable from TS-480 to Radio-RRC  (Read 9034 times)

KV6T

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serial cable from TS-480 to Radio-RRC
« on: 2012-02-07, 07:00:54 »
Sorry for my general lack of familiarity with RS-232 data cables.   Just

Why will a "standard" straight-through RS-232 from the TS-480 RF unit to the Radio-RRC COM2 not work in this application?   As far as I can see from the diagram on page 147, It looks like pins 2,3,5,7,8 are connected straight through.

Thanks,

Mark

dj0qn

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Re: serial cable from TS-480 to Radio-RRC
« Reply #1 on: 2012-02-07, 08:09:15 »
Mark,

Because one is male and the other female, so the pinout is backwards.
I found a link that shows this clearly: http://www.zytrax.com/tech/layer_1/cables/tech_rs232.htm#pins

73,
Mitch DJ0QN / K7DX

KV6T

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Re: serial cable from TS-480 to Radio-RRC
« Reply #2 on: 2012-02-07, 15:44:34 »
Mitch,

Thanks for your reply.

I actually saw that site, but I was still confused.  Is the standard DB9 M/F cable wired 1-5, 2-4, 3-3, 4-2, etc. rather than 1-1, 2-2, 3-3, ....

If that's the case, it appears that the EIA did this to confuse us :)

Thanks,

Mark



dj0qn

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Re: serial cable from TS-480 to Radio-RRC
« Reply #3 on: 2012-02-07, 17:10:25 »
Hi Mark,

I would compare it to looking in a mirror....everything is in the same place, just reversed.
That is how this is as well  ;)

73,
Mitch DJ0QN / K7DX

KV6T

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Re: serial cable from TS-480 to Radio-RRC
« Reply #4 on: 2012-03-02, 08:13:39 »
I made the cable and it works great on COM2.  Thanks again for your help.

Remoterig rocks!