Home » The PARIS Forums » PARIS: Main » OK, one more question about calibrating inputs
|
|
|
|
|
|
| Re: OK, one more question about calibrating inputs [message #83020 is a reply to message #82980] |
Thu, 12 April 2007 19:28   |
Paul Braun
Messages: 391
Registered: September 2005
|
Senior Member |
|
|
On Thu, 12 Apr 2007 00:01:44 -0600, "Dave(EK Sound)"
<audioguy_editout_@shaw.ca> wrote:
>You would be calibrating the inputs REALLY LOW.
>
>+4 is the **0VU** setting on pro gear.. which can be
>anything from -21 dB to -9dBFS depending on who makes the gear.
>
>The idea is to set whatever you feed Paris with to 0VU
>(console, pre's etc) then adjust the input trims to *your
>desired* level for 0VU. Here, we used the full output level
>of a DA88 to determine the input cal for our cards (at the
>time, we transfered in a LOT from DA88/38)
>
>Basically, you want the head-end stuff to be operating at an
>optimum level without the Paris inputs clipping.
>
OK, I"m confused.
With the 8-in set for +4, I plugged my little tone generator into one
of the channels on the board. Tone genny was set for +4, 1KHz. I set
the input gain on the channel so it was at a solid 0VU, which on that
board does translate to +4. Then I checked the 8in card. I turned
the trimmer all the way up, and could not get it to clip. If I set
the card to -10, however, I had plenty of leeway and was able to make
it clip, then back it down.
Why, with the input channel at a solid +4 going from a pre-everything
insert right into the 8in card set at +4, can I not get it to clip so
I can trim it out? Right now, it looks like I should just jack all
the trimmers up and let it ride, but that can't be right.
pab
|
|
|
|
| Re: OK, one more question about calibrating inputs [message #83022 is a reply to message #83020] |
Thu, 12 April 2007 20:15 |
audioguy_editout_
Messages: 249
Registered: December 2005
|
Senior Member |
|
|
Here is what I would do...
Generate a 0dbFS wave file at 1KHz (this can be done in
Wavelab if you have it). Import it and play it back in
Paris at full level and assign the playback to one of the
analog outputs. Patch a *balanced* 1/4" cable from that
output to the input of the AD card. Adjust the input trim
UP till the MEC module clips then back off the level till
the clip light goes away. Move to the next channel and
repeat.. This will match your in and out analog levels.
David.
Paul Braun wrote:
> On Thu, 12 Apr 2007 00:01:44 -0600, "Dave(EK Sound)"
> <audioguy_editout_@shaw.ca> wrote:
>
>
>>You would be calibrating the inputs REALLY LOW.
>>
>>+4 is the **0VU** setting on pro gear.. which can be
>>anything from -21 dB to -9dBFS depending on who makes the gear.
>>
>>The idea is to set whatever you feed Paris with to 0VU
>>(console, pre's etc) then adjust the input trims to *your
>>desired* level for 0VU. Here, we used the full output level
>>of a DA88 to determine the input cal for our cards (at the
>>time, we transfered in a LOT from DA88/38)
>>
>>Basically, you want the head-end stuff to be operating at an
>>optimum level without the Paris inputs clipping.
>>
>
>
> OK, I"m confused.
>
> With the 8-in set for +4, I plugged my little tone generator into one
> of the channels on the board. Tone genny was set for +4, 1KHz. I set
> the input gain on the channel so it was at a solid 0VU, which on that
> board does translate to +4. Then I checked the 8in card. I turned
> the trimmer all the way up, and could not get it to clip. If I set
> the card to -10, however, I had plenty of leeway and was able to make
> it clip, then back it down.
>
> Why, with the input channel at a solid +4 going from a pre-everything
> insert right into the 8in card set at +4, can I not get it to clip so
> I can trim it out? Right now, it looks like I should just jack all
> the trimmers up and let it ride, but that can't be right.
>
> pab
|
|
|
|
Goto Forum:
Current Time: Sat Mar 22 19:15:56 PDT 2025
Total time taken to generate the page: 0.10050 seconds
|
The PARIS Forums
Search
Help
Members
Register
Login
Home
