[time-nuts] FTS Datum 1000A-100

Magnus Danielson magnus at rubidium.dyndns.org
Fri Jan 16 04:19:04 EST 2009


David C. Partridge skrev:
> I think Mark was being ironic - i.e. he agrees with you.

Unfortunately, being ironic on a public email-list or forum needs to be 
applied with care. When a less knowing person comes in it can go 
terribly wrong in this case. Lack of traditional markings like :-> etc 
which could give a hint is also important. Within a group of peers it's 
not as much a problem as when others come in...

Cheers,
Magnus

> D. 
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Magnus Danielson
> Sent: 16 January 2009 09:05
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] FTS Datum 1000A-100
> 
> Mark Sims skrev:
>> Ahhh, yes...  as the Great One once said:  If it jams,  force it.   If it
> breaks,  it needed fixing anyway...
> 
> So my first attempt should be to apply 230 VAC directly, since if it fails
> it needs fixing anyway...
> 
> Sorry. Broken logic. Try again.
> 
> This is one of the fields which that kind of reasoning DOES NOT APPLY. 
> Overvoltage and overcurrent is things you need to know the limits for not to
> cause a mess.
> 
> There are other things in which the logic may apply, but again, this is not
> one of those. When having a component in your hand, the same kind of range
> of allowed voltages etc. is not expected since it is expected that the box
> that they go into will handle that as a complete design. If every component
> would have huge overvoltage protection schemes they would be bulky and
> overpriced.
> 
> Besides, I have been fairly successful at opening up things and reverse them
> to the level that I know what levels I can use.
> 
> Cheers,
> Magnus
> 
>> ------
>>
>>>> Or you could just connect the 24V supply and see if you get the 
>>>> clock out, and vice versa. This is certainly a lot easier and less 
>>>> destructive than taking the thing apart to find out which supply is 
>>>> which surely.
>>>>
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