[QuadList] Audio and Time Code Quiz of the week

chill315 at aol.com chill315 at aol.com
Tue Mar 6 22:10:44 CST 2012


Ron

You are correct as to the level.  +3 db.  The reason being that SMPTE time code is a square wave.  Thus the RMS energy is higher by that amount.  The peak to peak level is the same as a sine wave that shows 0 db on the meter.

That answers the first part of the questions.  

Chris Hill

On Mar 6, 2012, at 10:52 PM, Ron Fleury <sngman4 at yahoo.com> wrote:

> Steve Orland had me record it +3db as I recall from 1975 on a vr2000...saturation? RF
> 
> --- On Mon, 3/5/12, Chill315 at aol.com <Chill315 at aol.com> wrote:
> 
> From: Chill315 at aol.com <Chill315 at aol.com>
> Subject: [QuadList] Audio and Time Code Quiz of the week
> To: quadlist at quadvideotapegroup.com
> Date: Monday, March 5, 2012, 5:58 AM
> 
> The RA-4000 discussion last week got me thinking about the recording of SMPTE time code. 
>  
> So here are a couple of questions and we will see who comes up with the correct answers.
>  
> What is the record level as shown on the audio meter for SMPTE time code and why?
>  
> The AVR series dealt with time code in a straightforward manner.  Why did the VR series of machines have to be modified?  List more than one reason.
>  
> What was the VR Modification provided by AMPEX?  Bonus points if you can tell me what kit it came with.
>  
> Chris Hill
> WA8IGN
> 
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