[BC] Finding out what is inside
Kevin Tekel
amstereoexp
Sat Dec 16 23:15:08 CST 2006
Tom Osenkowsky wrote:
> Will Orban and/or CRL ever post schematics of
> the now out of production products "black boxes"
> like the 424A, etc?
You could just crack one open yourself and find out what's inside.
Sometimes due to heat and age, the potting compound inside embrittles
(is that a word?) to the point that you can easily pop the cap off
and then chip away to discover the components. You'll likely see
just a bunch of resistors, capacitors, and diodes. Some of the
Orban/CRL manuals explicitly describe these "black boxes" as
containing only passive components.
And certainly the architecture you're dealing with is already quite
"open". I have seen some circuits where all the ICs have their part
numbers ground off and the entire PC board is sealed with wax.
More information about the Broadcast
mailing list