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STEREO ENCODER SE4 DSP+

 
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STEREO ENCODER SE4 DSP+
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BDC
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Joined: 10 Feb 2006
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Post STEREO ENCODER SE4 DSP+ Reply with quote
1. We connect SE4 DSP+ with MAX PRO3 and the LCD informs ERROR, we think the pins are in correct place.
2. We do not connect the cable above. The audio signal through SE4 DSP and SE4 DSP+ and MAX PRO3 is very noisy and weak.
Please help by some advises ASAP.
Thanks
Fri Feb 10, 2006 2:10 am View user's profile Send private message
pcs
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Post Reply with quote
Did you connect I2C cable?

How long is the cable?

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Marko - PCS Electronics
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Fri Feb 10, 2006 2:25 am View user's profile Send private message Visit poster's website
BDC
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Post Reply with quote
pcs wrote:
Did you connect I2C cable? Yes, the cable supplied by PCS.

How long is the cable?
It is about 20cm
Fri Feb 10, 2006 2:43 am View user's profile Send private message
pcs
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Post Reply with quote
Its a bit long.

I suggest you try 2 things for a start:

1.) Make sure ground connection is correct. Now try to swap
the other two around.

2.) Try to shorten it up a bit, at least for a test.

If this fails, look at the two diodes close to eachother on the
SE4 board. Replace one of them with a low-drop shotky,
such as BAT85 or other cheap general use type.

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Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Fri Feb 10, 2006 10:12 am View user's profile Send private message Visit poster's website
BDC
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Post Thank you. It works. Reply with quote
pcs wrote:
Its a bit long.

I suggest you try 2 things for a start:

1.) Make sure ground connection is correct. Now try to swap
the other two around.

2.) Try to shorten it up a bit, at least for a test.

If this fails, look at the two diodes close to eachother on the
SE4 board. Replace one of them with a low-drop shotky,
such as BAT85 or other cheap general use type.

Wed Sep 27, 2006 10:48 am View user's profile Send private message
BDC
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Joined: 10 Feb 2006
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Post Re: Thank you. It works. Reply with quote
We have now other problem. We used SE3+ stereo coder before and very satified with it. Now we have SE4 DSP+ and found that the ouput audio level is very low. The input is standard. Has anyone an advise for me?
Wed Sep 27, 2006 11:01 am View user's profile Send private message
pcs
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Post Reply with quote
Note that there are jumpers which let you select the output level.

Also, LCD control module or I2C cable to MP3+ must be connected in order for
stereo encoder to work.

_________________
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Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Wed Sep 27, 2006 11:02 am View user's profile Send private message Visit poster's website
BDC
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Post Reply with quote
Yes. We tried 1V, 2V, 4V but nothing changes coder audio level out. We have I2C connected.
Thu Sep 28, 2006 3:44 am View user's profile Send private message
pcs
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Post Reply with quote
You can quickly inspect solders on the board to see if any component is not fully soldered.

I am preparing a troubleshooting/repair guide for these units with test measuring points
so this should help you find the problem. Probably will finish it today or tomorrow.
I'll post it in the forum under manuals.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Thu Sep 28, 2006 9:01 am View user's profile Send private message Visit poster's website
pcs
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Post Reply with quote
I have something that might. Can I email it directly?

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Thu Sep 28, 2006 3:47 pm View user's profile Send private message Visit poster's website
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