Solartron 1260 - Page 104

9.4.2
9.4.3
9.4
J
9.4.1
I
LEVELS
The
voltage
levels required
to
drive the
component
test
machine.
• [
4-
5V
]
Drive levels
are
4-
5V
and OV.
a
[
+ 18V]
Drive levels are
4-
18V
and OV.
LOGIC
The
logic sense
required to
drive the
component test
machine.
•
[negative]
Negative logic, i.e.
OV
=
T'
and
4*5V (or
4-
18V)
=
'0'.
•
[
positive
]
Positive
logic, i.e.
OV
=
'0'
and
4-5V (or
4-
18V)
=
T.
BINSORT
FUNCTIONS
To
perform
the
functions
defined
under
BINSORT
A and BINSORT B
the instrument
must be
fitted
with
the binsort
option
card.
The following
hierarchy of binsort
functions
is
then
available:
SWEEP
With a
sweep enabled,
each
component
tested is subjected to a
sweep and
the
bin selected
is related
to the
worst case
result. In this mode a
SINGLE
command
results in a
single sweep
and
a
RECYCLE
command
results
in repeated
sweeps.
This
function encompasses
the LIMIT and
NORMAL functions
described
below.
LIMIT
A
limit
check can
be
selected
for one
display
parameter whilst the
other
parameter is
used for
sorting. A fail
result from
the limits check
fails the
component,
regardless
of the
binsort result.
The
LIMIT function
encompasses
the NORMAL
function described
below.
NORMAL A
binsort
check is applied to
each
measurement
result, for a selected
number of
"bins” (32
max.). Each bin
corresponds to
a specified
tolerance
band.
The
value of
the displayed
parameter to be
sorted is
compared
with
the
bin limits
(which define the
tolerance bands)
and
the
number of the
bin
whose
tolerance
fits the sorted
parameter is
displayed.
Also,
an
appropriate
bin
select line is asserted:
this may be
used to
energise
the
appropriate
trap on a
mechanical binsorter or,
with manual sorting, to
illuminate a
lamp on
the appropriate
acceptor bin.
If the
value
of the sorted parameter
is outside
all
specified tolerance
bands then
"99”
is
displayed
to
signify that
the
component has failed.
The identity
of the
bin select line asserted
is one
greater than that of the
number
of
bins. This line may be used to
energise the
fail trap on
a
mechanical
sorter or,
with manual sorting, to
illuminate
the fail bin.
Binsort
Connections
The way
to
connect
the
instrument
to a
mechanical
binsorter
will be
described in
the
binsorter
manual.
Nulling with
a
binsorter
should
be done at
the
component test
contacts.
JWS/1260/2
5.35