Could Our 2-Site Round-Robin Gang Programmer Pak
Be ALL You Need ?
or
With a conventional gang programmer (where all chips are programmed
simultaneously), more programming sites always increases throughput.
But with our round-robin programmers, the above is only true to a certain
extend: you have to look at two timing parameters:
Tp -- the time it takes by the programmer to program wach chip
TL -- the time it takes by the operator to load and unload each chip
With our round-robin programmers, you can set them in production
mode, which tells the programmer to start programming immediately
after you have successfully loaded a chip into the programming socket.
Example (A):
If Tp=TL, then all you need is just TWO programming sites, because by
the time you finish unloading and loading at the second site, the
first one will be done.
Example (B):
If the ratio of Tp to TL is: 2 to 1
then you need THREE programming sites. For example, if Tp is 1 minute, and
TL is 30 seconds, then by the time you finish unloading and loading at
the third site, the first one will be done.
In General:
If the ratio of Tp to TL is: N to 1
then you need N+1 programming sites.
Refining the Math:
If N is not a whole number, say, 2.6. Then you want to round it up
to 3, which means you need a 4-site programmer setup. The reasoning is
that you want the programmer to finish first and WAIT for the operator,
instead of the other way. That is assuming human time is more important
than machine time.
Example (C):
If Tp is 26 seconds and TL is 10 seconds, then the ratio is: 2.6 to 1
then you need a 4-site (3+1=4) programmer.
Example (D):
If Tp is 24 seconds and TL is 32 seconds, then the ratio is: 0.75 to 1
then a 2-site X2 Programmer Pak would work well for you and you DO NOT
need to get even a 4-site programmer. (If you have only one programming
site, then your operator would be wasting time idling.)
Note: unloading and loading time, TL, depends a lot on the package
type you are going to use. DIP packages ted to take much less time
than surface-mount devices (SMDs).
At your service: 1-888-GO-ADVIN
(462-3846 ),
408-243-7000
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