[time-nuts] Low-Cost 6+ GHz Prescaler board for HP/Agilent 53181A/53131A/53132A
Pete Lancashire
pete at petelancashire.com
Thu Mar 25 16:10:02 UTC 2010
A quick pass and or random thoughts ..
> 1- The minimum measurable frequency
provide a pass thru path optionally have layout on the board
for a relay and its associated driver/interface.
> 3- Let's speak about input protection. More ...
Are there any negatives to having it optional ? I.E. no parts
on the board ? The old FR4 is 'free'.
> 4- Connectors. The PCB board will input into a standard SMA connector
SMA is OK for me, optionally consider SMB's and offer a SMB to SMA bulk
head
> 5 build options. I would buy the bare board but a parts kit I think
would be good. One big issue is storage of bulk SMD parts. Unless you
have controlled dry storage you can end up tossing out a lot of parts.
One consideration is having a assembly house just do the SMDs, Rs, Cs,
and the ICs. The rest can be done by hand.
> 6 Price .. make sure you consider all costs. The little ones can add
up, anti-static bags, padded envelopes, etc all cost money.
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