[QuadList] VR-1200B Daily Servo Set UP

[Guy Spiller]

These 70Cs will do 2 seconds or less, as well.  As soon as the guide 
pulls in, it locks so fast, it's scary!
The earlier 70s would do maybe 6 seconds dependably.  The good news is 
that the servos on all of them are absolutely stable and do not drift 
with temperature at all.
Guy

C. Park Seward wrote:
> My Ampex/Merlin will lock in 2 seconds from Ready. I assume other 
> 1200s will do the same if properly adjusted.
>
> I usually enter Play from Ready but don't do it within valuable 
> program material. I will hit the tape in a section like bars or black 
> so as not to disturb any good, active recording.
>
> Of course if you are really brave, rewind then hit FF and then stop as 
> the tape is slowing down and hit Play just as the tape is gong about 
> 15 IPS!
>
>  
> Best,
> Park
>
> C. Park Seward
> Visit us: http://www.videopark.com
>
>
>
> On Aug 23, 2009, at 4:18 PM, Don Norwood wrote:
>
>> Hi Chris:
>>  
>> I agree absolutely that the machines should lock in 4 seconds (from 
>> stop mode, less from standby) if the servo settings are correct.  My 
>> point was that with the improvements I mentioned, the servo stays in 
>> adjustment, which saves you from having to do the daily setup.  It's 
>> not unusual for the error voltages to remain zeroed and the 
>> oscillators on frequency for weeks or even months at a time.
>>  
>> Incidently, I'd be curious about how others operate VR-1200/2000 or 
>> RCA TR-70 machines regarding rolling old tapes from stop or from 
>> standby.  Not what was done "back in the old days", but what you do 
>> now with vintage material.  My approach is to always roll from stop.  
>> The reason is that I believe it is easier on the tape, considering 
>> that if the capstan is already at speed when the pinch roller 
>> engages, it is more stressful to the tape. 
>>  
>> Don
>>  
>> ----- Original Message -----
>>
>>     *From:* Chill315 at aol.com <mailto:Chill315 at aol.com>
>>     *To:* quadlist at quadvideotapegroup.com
>>     <mailto:quadlist at quadvideotapegroup.com>
>>     *Sent:* Sunday, August 23, 2009 3:49 PM
>>     *Subject:* Re: [QuadList] VR-1200B Daily Servo Set UP
>>
>>     One of the things that we did was keep the servos very tight.  If
>>     the machine was locking in 4 or more seconds, then it was time to
>>     do an alignment. 
>>      
>>     Yes the power supplies were an issue but the machine could do a
>>     reliable lock in less than 4 seconds.  Our situation was that we
>>     were editing and had to make the servos as tight as possible.
>>      
>>     Chris Hill
>>
>>      
>>
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-- 
Guy Spiller
email: quadruplex at verizon.net
phone: (804) 379-2050
website: www.GuySpiller.com
Midlothian, VA