[time-nuts] Achieving maximum performance when driving 5370A/Binputs
ed_palmer at sasktel.net
Sun Feb 28 09:17:00 UTC 2010
A few months ago I bought an HP 8647A signal generator that had the
plastic shaft of an optical encoder sheared off at the bushing. I had
to take the encoder apart and graft an aluminum shaft onto the stub of
the plastic one. To my amazement, it worked!
Don Latham wrote:
> I've fixed shafts like this carefully with plastic swizzle sticks and
> super glue. Did I say carefully? a little dab'll do ya...
> ----- Original Message ----- From: "Mark Sims" <holrum at hotmail.com>
> To: <time-nuts at febo.com>
> Sent: Saturday, February 27, 2010 10:10 PM
> Subject: [time-nuts] Achieving maximum performance when driving
>> If it's the one that I think it is... look closely at the photo.
>> The shafts on two of the pots are sheared off at the panel. These
>> are the display update control and the external arming level
>> control. These were custom HP pots with a funky (and delicate)
>> switch. They had brittle plastic shafts. Gee, how do I know
>> this... could it be that a large percentage of the 5370's for sale
>> have the same defect?
>> Luckily those controls are not too critical for normal operation.
>> They can be replaced with regular (switchless) pots if you jumper the
>> switch pads correctly. Be careful, there were two different layouts
>> to those controls.
>> So exactly how did you know that I bought a (cheap) 5370B a few hours
>> ago on the e-place
>> Hotmail: Trusted email with powerful SPAM protection.
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