Sequential Sorting
Sequential sorting with the same nominal can be set up in essentially the
same way as for overlap sorting, with a nominal value only defined for bin 0.
However, every bin will need both upper (+LIM) and lower (–LIM) limits
defined. For example, to sort a particular resistor into the bands —2% to —1%, ±
1%, and +1% to +2%, bin 0 has its NOM set to the nominal resistor value, +LIM
set to —1% and –LIM set to —2%; bin 1 has no NOM value and its +LIM is set
to +1% and its –LIM to —1%; bin 2 has no NOM either, its +LIM is set to +2%
and its –LIM is set to +1%.
Sequential sorting with different nominals can again be set up in
essentially the same way but this time every bin has NOM set to its respective
nominal. If the limits associated with each nominal are symmetric then only
+LIM need be set, but if they are asymmetric then –LIM will also need to be
set.
In both schemes bin 8 can be set with the limit for the minor term, if
required, exactly as described previously.
Any parts that do not fall into the pass bins or bin 8, including any 'gaps'
between the limits of the sequential bins are assigned to bin 9, the general
failure bin.
Storing and Recalling Sort Set—ups
Set—ups for multi—bin sorting are stored and recalled from non—volatile
memory exactly as described for simple pass/fail sorting.
Page 28
MZ-805 L/C/R meter
August 2002