Hi Guys,
I have a quick question for yall. I did a quick search and didnt find anything quickly about this.
Im playing around with the Digital Converters i've been using for years... They can be set for 14-20 dbu. I have them set at 18dbu in and out. (Im using antelope Orion 32 Converters)
I was messing with the DBu in and out for fun to see what happens and what would be best.... I still dont know about that part..
heres my Q.
I've been under the impression that the voltage of the oscillator should be 1.226v or somewhere near there... .which should relate to +4DBu which is 0VU Correct?
When my 4k Oscillator is at the Cal position it measures 0.9v ac. ( i dont have a meter that does terribly fine details but thats too low? )
When i inject the oscillator to a channel line in, look at the centre section and i get -4vu on the master meter when channel is centred and when i pan to the left or right i get 0vu. Seems correct....
If i inject the same tone Osc to the console master section (post or pre) vca position i get approx +3vu? Odd
If i send a tone signal from Pro Tools at -14db 1k tone out to a patch point it measures 0.8v ac (similarly close to the console cal but not the same)
When i Inject the oscillator to a channel line in, i get 0vu on the channel meter.
When sent to the master and the pan is left or right i get -1vu on the master meter. When channel pot is centred i get -5vu. Seems normal. Given the voltage difference may be giving the -1vu but the same results from the same channel different osc.
If i inject the signal to the master Pre or Post vca position i get approx -3vu...? Weird..
What am i missing here. Shouldnt the osc come out at 1.226v firstly? i know theres a trim pot on the osc. I dont want to touch it incase it is set right ... but i've recapped the console in the last year. so maybe someone set the pot last through bad caps ? Dunno...
Why would pro tools be outputting a .8v I'd assume it be outputting a 1.226 properly but i dont know...
I'll be calling our tech, but i would love to know if this is something that is way out or im doing it wrong first.
thanks!