Re: [Hamlib-developer] hamlib 1.2.8 and IC-7400

[Ladislav V. <sp...@na...>]

On Thu, 4 Dec 2008, Corny, Df6fR wrote:

> Hi Lada,
>
> thanks for your questions. Here are my first answers. I have to check
> some tonight.
>
> Am Thu, 4 Dec 2008 14:41:13 +0100 (CET) schrieb Ladislav Vaiz
> <sp...@na...>:
>
>> Hi,
>> what is power supply for radio side (+8V on schematics) ?
>
> The 8V come from ACC2 of the 7400.

Should be O.K.

>> If you use terminal program like minicom, does it echo typed characters?
>
> I didn't use minicom yet, because I thought I need to type CIV
> commands. And that's what hamlib does as well. I am not sure what
> exactly to do with minicom, but I'll fool around tonight.

Try to type some characters, minicom must echo they back. Try to unplug 
the +8V, echoing should stop.


>> What voltage is on cannon pins 4 and 7 ?
>
> What does 'cannon' mean? Pins 4 and 7 are DTR and RTS and they are
> actually set to ON. So I have my laptops RS-232 level on these pins,
> this is something about 7V.

Cannon is common name for DSUB9/DSUB25 connectors in OK. +7V is correct.

>
>> Do you have oscilloscope to see signal shapes?
>
> I have one, but I didn't record the signal shapes.

Look if edges are fast without distorsion.

>> And my favorite mistake: do you have cannon connected to the right
>> connector? :-)
>
> I don't understand the question, sorry. But it is the same hardware
> configuration N1MM works without any problems (I only have one serial
> port on the laptop).

Oh, my mistake, should be "CI-V plug connected"....
Before some time I've connected CI-V plug to RTTY interface :-)


>> Is the /dev/ttyS0 opened only by rigctl (as root lsof /dev/ttyS0)
>
> Didn't check yet, but this is the first time I use the RS-232 on my
> laptop, so no other program should be using it. I'll tell you tonight.

Maybe forgotten logging program... Hamlib doesn't lock ttyS0 device so it 
can happen.

73 Lada OK1ZIA