Technics turntable remote start info needed

[Joe[_14_]]

Hi.. I hope this isnt to much off topic. I have a Technics SP25
broadcast turtable that I would like to be able to remote start. On
the underside of the unit next to the grounding terminal there is,
what looks like a 1/8" jack. I was wondering if thats for the remote
start, and how would that be wired? I dont want to just experiment as
I dont want to short out anything. I did look all over for info on
this but couldnt find anything in ref to this. Any infor would be a
help.
Thanks

[Mark]

Any infor would be a
> help.
> Thanks

I found this..

http://www.henryeng.com/pdf_MANUALS/utcsci.pdf

Mark

[Joe[_14_]]

On Jan 14, 12:53*pm, Joe > wrote:
> Hi.. I hope this isnt to much off topic. I have a Technics SP25
> broadcast turtable that I would like to be able to remote start. On
> the underside of the unit next to the grounding terminal there is,
> what looks like a 1/8" jack. I was wondering if thats for the remote
> start, and how would that be wired? I dont want to just experiment as
> I dont want to short out anything. I did look all over for info on
> this but couldnt find anything in ref to this. Any infor would be a
> help.
> Thanks

Thanks Mark..Thats just the info I needed..perfect!!!!!

[William Sommerwerck]

> http://www.henryeng.com/pdf_MANUALS/utcsci.pdf

"Push the START switch to start the turntable; push the STOP switch to stop
the turntable. If a maintained switch is used to control the UTC, opening
the switch will stop the turntable. The mode indicators will always indicate
either the RUN or STOP condition."

So if the START switch is a maintained switch, and you also have a momentary
STOP switch, what does pressing the STOP switch do? Does it stop the 'table?
If so, the START switch will be in the "run" position, even though the
'table is stopped.

See what I mean about people not knowing how to write user manuals?

[Bill Graham]

William Sommerwerck wrote:
>> http://www.henryeng.com/pdf_MANUALS/utcsci.pdf
>
> "Push the START switch to start the turntable; push the STOP switch
> to stop the turntable. If a maintained switch is used to control the
> UTC, opening the switch will stop the turntable. The mode indicators
> will always indicate either the RUN or STOP condition."
>
> So if the START switch is a maintained switch, and you also have a
> momentary STOP switch, what does pressing the STOP switch do? Does it
> stop the 'table? If so, the START switch will be in the "run"
> position, even though the 'table is stopped.
>
> See what I mean about people not knowing how to write user manuals?

Not being familiar with this particular turntable, I can only comment on how
they are usually configured. The start switch usually picks a "run" relay,
which then holds through its own point and the "stop" switch, which is
normally closed. Other points on this relay will energize the motor. When
the stop switch is pressed, the relay drops, and cannot repick until and
unless tha start switch is pressed again. The stop switch is normally
closed, and pressing it opens the circuit.

[Fred[_13_]]

"Bill Graham" > wrote in message ...
> William Sommerwerck wrote:
>>> http://www.henryeng.com/pdf_MANUALS/utcsci.pdf
>>
>> "Push the START switch to start the turntable; push the STOP switch
>> to stop the turntable. If a maintained switch is used to control the
>> UTC, opening the switch will stop the turntable. The mode indicators
>> will always indicate either the RUN or STOP condition."
>>
>> So if the START switch is a maintained switch, and you also have a
>> momentary STOP switch, what does pressing the STOP switch do? Does it
>> stop the 'table? If so, the START switch will be in the "run"
>> position, even though the 'table is stopped.
>>
>> See what I mean about people not knowing how to write user manuals?
>
> Not being familiar with this particular turntable, I can only comment on how they are usually configured. The start switch usually
> picks a "run" relay, which then holds through its own point and the "stop" switch, which is normally closed. Other points on this
> relay will energize the motor. When the stop switch is pressed, the relay drops, and cannot repick until and unless tha start
> switch is pressed again. The stop switch is normally closed, and pressing it opens the circuit.

That's the way most R/R tape machines work; the relays are switching
AC to the motors, high current AC or DC to the brake & pinch roller
solenoids, etc. Turntables usually use solid state logic rather than relays
as they're switching low voltage, low current DC, and the logic may be
somewhat more complex, especially if the tonearm is semi or fully automatic
as it is on most Technics turntables.

Fred

[William Sommerwerck]

> "Push the START switch to start the turntable; push the STOP switch
> to stop the turntable. If a maintained switch is used to control the
> UTC, opening the switch will stop the turntable. The mode indicators
> will always indicate either the RUN or STOP condition."

> So if the START switch is a maintained switch, and you also have a
> momentary STOP switch, what does pressing the STOP switch do?
> Does it stop the 'table? If so, the START switch will be in the "run"
> position, even though the 'table is stopped.

> See what I mean about people not knowing how to write user manuals?

In case it wasn't perfectly clear, I was talking about the Start and Stop
switches on the remote, not on the 'table.

I wasn't necessarily looking for an answer. I was trying to point out that
the manual failed to address a perfectly reasonable question.

[Bill Graham]

Fred wrote:
> "Bill Graham" > wrote in message
> ...
>> William Sommerwerck wrote:
>>>> http://www.henryeng.com/pdf_MANUALS/utcsci.pdf
>>>
>>> "Push the START switch to start the turntable; push the STOP switch
>>> to stop the turntable. If a maintained switch is used to control the
>>> UTC, opening the switch will stop the turntable. The mode indicators
>>> will always indicate either the RUN or STOP condition."
>>>
>>> So if the START switch is a maintained switch, and you also have a
>>> momentary STOP switch, what does pressing the STOP switch do? Does
>>> it stop the 'table? If so, the START switch will be in the "run"
>>> position, even though the 'table is stopped.
>>>
>>> See what I mean about people not knowing how to write user manuals?
>>
>> Not being familiar with this particular turntable, I can only
>> comment on how they are usually configured. The start switch usually
>> picks a "run" relay, which then holds through its own point and the
>> "stop" switch, which is normally closed. Other points on this relay
>> will energize the motor. When the stop switch is pressed, the relay
>> drops, and cannot repick until and unless tha start switch is
>> pressed again. The stop switch is normally closed, and pressing it
>> opens the circuit.
>
> That's the way most R/R tape machines work; the relays are switching
> AC to the motors, high current AC or DC to the brake & pinch roller
> solenoids, etc. Turntables usually use solid state logic rather than
> relays as they're switching low voltage, low current DC, and the logic may
> be
> somewhat more complex, especially if the tonearm is semi or fully
> automatic as it is on most Technics turntables.
>
> Fred

Yes. I am from the pre-digitasl era, where relay logic was generally used.
But I believe the logic is similar.

[Scott Dorsey]

In article >,
Joe > wrote:
>Hi.. I hope this isnt to much off topic. I have a Technics SP25
>broadcast turtable that I would like to be able to remote start. On
>the underside of the unit next to the grounding terminal there is,
>what looks like a 1/8" jack. I was wondering if thats for the remote
>start, and how would that be wired? I dont want to just experiment as
>I dont want to short out anything. I did look all over for info on
>this but couldnt find anything in ref to this. Any infor would be a
>help.

vinylengine.com has a copy of the manual online.

I believe this is an SL1200 in disguise, actually, with all the usual
hum and cogging issues of the SL1200. The SL1200 does not have remote
start and needs to be modified with an input paralleling the switch.

If your console requires a confirmation signal saying the console is
up to speed, there is a modification from the guys at KALX which appeared
in Radio World a few years back.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Capnmax]

William,

I think you would do one *or* the other but not both. I don't find this particularly confusing but a helpful clarification in letting me know I've got options depending upon whether I'm hooking the UTC up to a broadcast console (usually with 2 separate switches) or directly to a single throw.


> "Push the START switch to start the turntable; push the STOP switch
> to stop the turntable. If a maintained switch is used to control the
> UTC, opening the switch will stop the turntable. The mode indicators
> will always indicate either the RUN or STOP condition."

> So if the START switch is a maintained switch, and you also have a
> momentary STOP switch, what does pressing the STOP switch do?
> Does it stop the 'table? If so, the START switch will be in the "run"
> position, even though the 'table is stopped.

> See what I mean about people not knowing how to write user manuals?

In case it wasn't perfectly clear, I was talking about the Start and Stop
switches on the remote, not on the 'table.

I wasn't necessarily looking for an answer. I was trying to point out that
the manual failed to address a perfectly reasonable question.