[volt-nuts] Banana jack shorting straps

[Rob Klein]

Hmm, it appears that is true. I've just checked on both my 3456 and 3457 and they do indeed have a larger horizontal spacing. Interestingly, the spacing on the 3456 is slightly smaller than on the 3457.


⁣Met vriendelijke groet,
Rob Klein

verstuurd vanaf mijn smartphone​

Op 9 nov. 2017 19:48, om 19:48, Randy Evans <randyevans2688 at gmail.com> schreef:
>I believe that the Fluke shorting system has 3/4" spacing both
>vertically
>and horizontally, which is not compatible with the 3458 (I couldn't
>find a
>spec but visually it looks identically in both dimensions in the
>photos).
>The 3458 spacing is slightly greater than 3/4' horizontally.
>
>On Thu, Nov 9, 2017 at 10:14 AM, Rob Klein <rob.klein at smalldesign.nl>
>wrote:
>
>> You gentlemen are aware that these things are available from Fluke at
>a
>> fairly reasonable price?
>>
>> http://nl.farnell.com/fluke/fluke-884x-short/lead-test-4-
>> wire-fluke-884x-short/dp/1274092
>>
>>
>> ⁣Met vriendelijke groet,
>> Rob Klein
>>
>> verstuurd vanaf mijn smartphone​
>>
>> Op 9 nov. 2017 14:12, om 14:12, "David C. Partridge" <
>> david.partridge at perdrix.co.uk> schreef:
>> >Mark
>> >
>> >I'm trying to imagine what you are describing - is this PCBs with
>4mm
>> >banana plugs installed or a small PCB with two slots at 3/4" centres
>to
>> >match the socket spacing?
>> >
>> >If the latter is this intended to cover just two sockets or to short
>> >all four Force and Sense sockets together (if arranged like a
>3458A)?
>> >
>> >Thanks
>> >Dave
>> >
>> >-----Original Message-----
>> >From: volt-nuts [mailto:volt-nuts-bounces at febo.com] On Behalf Of
>Mark
>> >Sims
>> >Sent: 09 November 2017 02:14
>> >To: volt-nuts at febo.com
>> >Subject: [volt-nuts] Banana jack shorting straps
>> >
>> >The main use of these would be shorting sense to drive jacks.  They
>> >could also be used for input shorts.  The advantage over bare copper
>> >would be the ENIG gold finish... bare copper quickly forms oxide
>layers
>> >and copper oxide has a horrible thermal EMF.  Granted, ENIG gold
>> >basically involves waving a bar of gold over the plating tank and
>> >hoping some gold atoms fall off.  The board house I use deposits a
>> >thicker layer than most.   You don't want to know what "hard gold"
>> >finish would cost.
>> >
>> >Using a PCB house to fab them is probably 20 times less expensive
>than
>> >having a machine shop do them out of solid copper... maybe 50 times
>> >less if you need to get them gold plated.
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