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Behringer DCX2496 mod - what to do with RS232 port?
Behringer DCX2496 mod - what to do with RS232 port?
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Old 10th February 2021, 03:22 AM   #1
tommus is offline tommus  United States
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Default Behringer DCX2496 mod - what to do with RS232 port?

I am working on a mod to the DCX that involves removing the input/output board. I want to keep using the RS232 port. Can I just go from the D-sub pins to the input on the DSP board? Or is there some sort of circuitry on the I/O board that processes the D-sub input? Thanks.
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Old 10th February 2021, 04:23 AM   #2
Davey is offline Davey  United States
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No, no circuitry, but a few of the handshake lines (1,4,6) on the DB-9 connector are looped. But your connected computer/cable probably won't care if it sees those.

Dave.
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Old 10th February 2021, 05:10 AM   #3
BesPav is offline BesPav  Russian Federation
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I'll drop rs232 out and provide or I2S input with masterclock out from DCX2496, or I2S output of 3 pairs stereo for external DACs like DBX 4800 do.
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Old 12th March 2021, 01:36 PM   #4
tojoko is offline tojoko  Netherlands
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Default DCX2496

Quote:
Originally Posted by Davey View Post
No, no circuitry, but a few of the handshake lines (1,4,6) on the DB-9 connector are looped. But your connected computer/cable probably won't care if it sees those.

Dave.
Hi
Does someone have a schematic of the RS-232 connection to the mainboard?
Have replaced the OutputPCB for a passive (diy) board and want to keep RS-232 function,
Cheers, Tom.
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Old 12th March 2021, 01:55 PM   #5
tommus is offline tommus  United States
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Click the image to open in full size.

You need 3 pins from the small header: #9, 17, 18
These correspond to pins 5, 3 and 2 on the D-sub.
5 is ground, 2 and 3 are Rx and Tx.
(I mixed up Rx and Tx when building and I forget which is which)

Click the image to open in full size.

I used a D-sub connector with a Phoenix style breakout board and wired the loopbacks onto it.
Jumper pins 1+4+6 together, and also 7+8.
Just make sure the connector you get will fit between the chassis wall and power supply.

Last edited by tommus; 12th March 2021 at 02:04 PM.
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Old 15th March 2021, 08:55 AM   #6
tojoko is offline tojoko  Netherlands
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Default passive out DCX2496

Hi
Thanks!
Tojoko.
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