Prev: Tascam M2600 MkII question
Next: ebay auction for a dcx 2496 mod
From: E. Hill on 27 Oct 2006 12:31
> Thanks. I see that computer control is through an RS232. Is there any
> way to send that through an analog audio snake?

In theory, yes. For serial, you need 5 pins (including ground). So, it could
be done using the wires from two channels.

We've been running aux-fed subs via the DCX2496 for awhile now. (A and B are
left and right, C is the aux fed sub). Works fine. I setup the rig with the
software. The UI on the screen seemed too complicated.

Eric


From: ericwhit on 27 Oct 2006 12:44

promo_john(a)yahoo.com wrote:
> Thanks. I see that computer control is through an RS232. Is there any
> way to send that through an analog audio snake?
>


Dead easy with the DBX unit as i have done this for 2 yrs over a 150 ft
whirlwind snake with not 1 problem -ever. the dbx units came with a
null modem cable, if you dont have it then get one or make one. Here is
how you wire it and only 3 wires needed..

DB9 at one end to XLR ~~ from XLR
To other DB9 end
pin 2 pin 2 ~~ pin2
pin3
pin3 pin 3 ~~ pin3
pin2
pin5 pin1 ~~ pin1
pin5

yes the pin 2 and 3 of the Db9 connector get swapped

From: E. Hill on 27 Oct 2006 12:50
> 232 doesn't travel well over long distances.

We run serial connections 100's of feet in commerical applications to run
dumb terminals. In fact, for years we ran silver satin (which looks like
6-conductor flat telephone cable). Didn't even use twisted-pair. Works fine.
I think the fastest we ever went was 38,400. No error correction, either.

When we moved to twisted-pair, there *wasn't* any noticable improvement.
But, as everything is being run CAT-5 or 6 these days, it's a better
investment for the end-user.

I would try it... Just make a couple of pig-tail adapters that use two
channels. Get a couple of 9-pin serial cables, and cut one end off. Attach
the XLR's.

Eric


From: E. Hill on 27 Oct 2006 12:59
What happened to DTR and CTS? lol.

The DCX manual doesn't state if the port uses flow control or not. I would
try it without flow control first, as you can use one XLR.

Eric


From: brad.parker79 on 27 Oct 2006 14:08
Hello,

Marc Amsterdam wrote:
> On 27 Oct 2006 07:43:22 -0700, promo_john(a)yahoo.com wrote:

> >Thanks. I see that computer control is through an RS232. Is there any
> >way to send that through an analog audio snake?

> >jp

> the unit has RS 232 which travels roughly about 15 meters before the
> signal deteriorates to much.

In theory yes RS 232 should only work around that distance , in
practice I routinely talk to Ashly Protea 4.24ds using returns on a
150' snake.

No problems.

I've also gone the distance with the QSC DSP-3 and DSP-4.

Again, no problems.

The above devices talk at 38.4 kbaud and I can easily make adjustments
in "real time" while running the system. I'll speculate that the RS
232 spec for distance may be true at 115 kbaud, but I've never had a
problem with the above units.

I have a DCX 2496, but haven't tried across the snake with it yet, I
ususally just dial it in from the front panel. I believe it will work
as well, but can't say for sure.

> it also has RS 485 which travels up to a 1000 meters over standard
> xlr cabling ( advised to terminate the v- and v+ with 110 ohm

Something I have wanted to try is to use the RS 485 to make a network
of DCX 2496s. One thing I don't care for w/ the Ashly units is that I
routinely run 2 and sometimes 3 controllers. I have to use a channel
for each serial connection, or visit one of the units w/ a laptop in
hand.

With the DCX one should be able to link to the first unit using a RS
232 connection and then talk to the other units using a daisy chain of
properly terminated RS 485 connections. This with one channel on the
snake carrying the serial signal. Has anybody here tried this?


Brad

> resistor)
> for rs485 you need a converter that "translates" rs 232 to rs 485
> the defacto standard converter used for XTA ( yes yes in know,
> expensive) is the KK systems K2 and for use with usb to rs232 dongle a
> K2 ADE ( Automatic Device Enable) is needed.

> also there are manufacturers like Quatech that make a PCMCIA rs485
> card but the KK systems is by far more flexible for what you need to
> do with it and have proven reliability.
> if you need to use a usb to serial converter Quatech has one as has
> ATEN ( UC232a)
> but pretty much any industry standard converter will work.
> i make use of a Palm usb kit that came with my old and long gone palm
> 3c handheld and it works fine, ,minded that XTA's are not very picky
> about the RS signal it gets fed

> another option is to go wireless with a WISER2400 radio system from
> OTC but the you are in a pric range that exceeds the price of a single
> unit of a dcx by far.

> a KK systems K2ade + usb dongle + a xlr to rj45 cable can be obtained
> from XTA as a complete kit for around 160 pounds. or you can find
> yourself the parts cheaper and solder them


> The wiring for the 9 pin D-type to 3 pin XLR is as follows:
> D-type XLR
> 1 1
> 3 2
> 8 3



> links

> http://www.kksystems.com/


> http://www.quatech.com/products/mobile_connectivity.php

> www.xta.co.uk

> cheers

> Marc

First  |  Prev  |  Next  |  Last
Pages: 1 2 3
Prev: Tascam M2600 MkII question
Next: ebay auction for a dcx 2496 mod