Remote Rig

RRC 1258 Support in English => Hardware, Cabling, Installations => Topic started by: KV6T on 2012-02-07, 07:00:54

Title: serial cable from TS-480 to Radio-RRC
Post by: KV6T 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

Title: Re: serial cable from TS-480 to Radio-RRC
Post by: dj0qn 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

Title: Re: serial cable from TS-480 to Radio-RRC
Post by: KV6T 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

Title: Re: serial cable from TS-480 to Radio-RRC
Post by: dj0qn 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

Title: Re: serial cable from TS-480 to Radio-RRC
Post by: KV6T on 2012-03-02, 08:13:39

I made the cable and it works great on COM2.  Thanks again for your help.

Remoterig rocks!