accutuner

[John Ross]

Hi Carl,
My understanding of the RAM hold on voltage for the SATll is as follows.
Every time you switch the unit on, a capacitor charges up, and this is used 
to hold the memory. That is why it is very important to turn it on every 
couple of weeks, to recharge this capacitor.
When the capacitor discharges, then the small disk battery takes over.
The main rechargeable battery is just used for day to day operation.
If the capacitor and the disk discharge, then you do not have a hold on 
voltage for the program, and the SAT doesn't know what to do. It then has to 
be sent back to Inventronics for a reprogramming.
When it goes back for repair, they do all the new modifications, including a 
new capacitor and disk battery. (They did for me, I am assuming it is SOP.)
That is the main reason I upgraded to the SATlll, when it came out, as it 
has a flash memory, not dependant on a hold on voltage.
About changing the disk battery, as long as the capacitor is charged, you 
should be ok.
How long is it since you had your unit serviced? It might be just as well to 
send it back to Inventronics, for the most recent mods.


John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
----- Original Message ----- 
From: "Carl Meyer" <cmpiano@comcast.net>
To: <pianotech@ptg.org>
Sent: Wednesday, November 10, 2004 12:12 AM
Subject: accutuner


>I have an accutuner 11 fac type.  I bought it used and it had not been used
> for months. The battery was completely dead. It finally took a charge 
> after
> charging it several times.  It seemed to work okay.  I now want to replace
> the batteries.  I can handle that okay.
>
> My question is:  How can I be sure the program is still okay?  I thought
> that if I manually programmed  FAC  to as an example to F=6, A=5, and C=4
> then see what the stretch figures would be at a sample of notes like all
> "A"s and "D"s.
>
> I can do that before and after battery replacement, but I don't know 
> exactly
> what the numbers should be.
>
> Anybody with a recently calibrated unit like mine want to run those 
> numbers
> so that I can compare?  I'd appreciate it.  Thanks
>
> Can the memory battery be replaced as well without messing up the thang?
>
> Carl Meyer Ptg assoc
> Santa Clara, Ca.
>
>
>
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