26 Feb
1999
26 Feb
'99
3:50 p.m.
At 08:37 PM 2/26/99 -0500, you wrote:
Upon the date 06:58 PM 2/26/99 +0000, Joe said
something like:
<lots sniped>
At 05:21 PM 2/26/99 -0500, Chris wrote:
>Upon the date 12:40 PM 2/26/99 -0800, Sellam Ismail said something like:
>>
>>Does anybody know when Hewlett-Packard made the Model 130C oscilloscope?
>>Its tube based. The serial number is 503-03353.
>
1960 added to the first two digits
ONLY if it's a four digit prefix! Look at the serial number on Sam's
scope, do you think it was made in 2010? (1960 + 50) Use only the first
digit if it's a three digit number, as Sam's is.
is the number stated in an HP document I
recall from way back when which is yet another way HP
instructed customers
how to decipher the SN.
Not if you read the service manuals. All of the ones that I've read that
give the date break down specificly state that the actual production date
is 8 weeks ahead of the date in the serial number.
Joe
and the second pair is (usually) the week of
The week digits are the week date the number was assigned to the production
item.
production. Numbers after the hyphen are the
serialized number.
1834A-xxxxxx is some unit built around 34th week of 1978, for example.
That's ALLMOST true. Actually the dates on most (all?) items are offset