[ICOM] One CI-V, two serial connections?

Sat Jul 25 10:55:42 EDT 2009

Okay, that's great information.  I'll look at the polling then.

The instructions for the N2VZ Turbo Tuner (with respect to the rig):

Baud Rate Setting – The baud rate setting on the Icom radio is accomplished
by menu item “CI-V Baud” and needs to be set to ‘4800’. “CI-V Address” needs
to be set to 58H. “CI-V Transceive” needs to be Off. “CI-V” 731 set to Off.
“Tunr auto start” set to Off. “Tuner” PTT set to Off.

How does that leave me with regards to the trasceive item?

Lastly...

One of my main questions was regarding the 2-conductor 1/8" connector from
the Turbo Tuner.  It "tip" and "ring"... but no "sleeve".  Yet it's plugged
into a splitter designed for 3-conductor connectors.  Is that an issue?

Mike, WA9PIE

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Dave AA6YQ
Sent: Saturday, July 25, 2009 10:40 AM
To: 'ICOM Reflector'
Subject: Re: [ICOM] One CI-V, two serial connections?

If the nodes on a CI-V network are autonomous, then lowering the baud rate
will increase the likelihood of collision.

Most transceiver-control applications operate the transceiver in
master-slave mode (i.e. with the transceiver's "CI-V transceive" menu option
is disabled). The application issues a command, and the transceiver responds
-- so there are no collisions. The application periodically "polls" the
transceiver, directing it to report its current frequency and mode.

Reducing the transceiver control application's polling rate will reduce the
likelihood of collisions.

I am not familiar with the Turbo Tuner, but it may require the transceiver's
"CI-V transceive" menu item to be enabled, which means that the transceiver
will autonomously report its frequency whenever you change its frequency via
the front panel. Since such reports can collide with commands issued by the
transceiver control application, you should use a transceiver control
application capable of dealing with them (detecting a negative or missing
response and resending the command). Of course the Turbo Tuner's embedded
software must also be capable of dealing with collisions.

   73,

       Dave, AA6YQ

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Joe Oski
Sent: Saturday, July 25, 2009 10:24 AM
To: ICOM Reflector
Subject: Re: [ICOM] One CI-V, two serial connections?

Mike,
My application is not the same as yours.
I use a single CI-V to connect to two radios, the 746 and 756P3.
The Hex addresses are different and each radio is controlled by a different
version of MixW.
BTW on the ICOM version of level converter all four 1/8 inch jacks are in
parallel.

The issue of collisions may be the issue. I suggest you lower the baud rate
settings on the radio and tuner and of course in the software.

73
Joe O, KI5FJ
NNNN

--- On Sat, 7/25/09, Michael G. Carper <mike at wa9pie.net> wrote:

From: Michael G. Carper <mike at wa9pie.net>
Subject: [ICOM] One CI-V, two serial connections?
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Date: Saturday, July 25, 2009, 2:38 AM

Has anyone had any luck getting two serial devices to talk to a single CI-V?

I've got an IC-706MkIIG in my truck with a Turbo Tuner (this has a
2-conductor 1/8" male connector on it that plugs into the CI-V port).

I've also got a laptop with a CI-V cable (that has a 3-conductor 1/8" male
connector on it that plugs into the CI-V port).

N2VZ told me to get a headphone splitter (like you'd use for an iPod) and
connect both to the CI-V port.

I did this and it kind-of works.  Both connections have to be at the same
baud rate (the Turbo Tuner is 4800 baud, so I make the computer connect at
the same rate).

The issue is.

The Turbo Tuner gets confused and ends up taking the antenna the wrong
direction to tune.  When only the Turbo Tuner is plugged in, it works just
fine.

Thoughts?

Mike, WA9PIE

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Icom Users Net: Sundays, 1700Z, 14.316 MHz
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To support QSL/QTH.net: http://www.qsl.net/donate.html

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Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/
To support QSL/QTH.net: http://www.qsl.net/donate.html