Go/No-Go And Bin Assignment Results; Bin Sum Information; Binning And Ratio Measurement Simultaneously - IET Labs, Inc. RLC Digibridge 1693 User And Service Manual

NOTE: When POWER is switched ON - if the key-
board is not locked - nominal value is initialized at
zero. Therefore, all bin sorting is initially inhibited.
Changing Entries: Enter new value(s) - or a zero.- to
delete obsolete or erroneous nominal value or bin
limits. Do not attempt to change or enter a single
separate upper or lower limit in a bin, because any
single percentage entered for a bin will be interpreted
as a symmetrical pair of limits. Changing nominal
value does not change any limits, but does determine
the base for subsequent limit entries for specific
bins. [After function is changed to MEASURE, this
nominal value will also serve as reference for delta
percent measurements.)
RLC Unit Selection. In limit entry procedures, it is
NOT necessary to select the range that the Digibridge
will use in measuring. Just be sure that the number
you enter for nominal value is suited to the units and
unit multiplier indicated on the display panel. For
example, nominal values of .033 H, and 33 mH are
equivalent.
3.8.7 Go/No-Go and Bin Assignment
Results
If comparison (binning) is enabled, the GO/NO-GO
indicators will provide the following information after
each measurement:
GO - The DUT passed, in bin 1, 2, 3, ... 13
NO-GO - The DUT failed, in bin 0 (QDR failure)
or bin 14 (RLC failure).
If the display selection is BIN NO., the bin assignment
will be shown in the left display area.

3.8.8 Bin Sum Information

If comparison (binning) is enabled, the Digibridge
automatically keeps totals of th e number of measure-
ments assigned to each bin since power-up (or reset
of the count to zero). The sums can be called up onto
Operation
the display or sent out over the IEEE-488 bus. To
make use of the bin-sum feature use these keystroke
sequences:
• [SHIFT][BIN SUM][0][0] - requests the sum
for bin 0
• [SHIFT][BIN SUM][0][l] - requests the sum
for bin 1
• [SHIFT][BIN SUM][0][2] - requests the sum
for bin 2
• (etc) Note: sum appears at left, bin number at
right.
• [SHIFT][BIN SUM][LOCK] - sends the sums
out via the IEEE-488 bus
• [=][SHIFT][BIN SUM][0][0][1][4] - resets all
sums to zero
3.8.9 Binning and Ratio
Measurement Simultaneously
In order to bin-sort component parts whose values
lie beyond the normal measurement range of the
Digibridge, you must combine ratio measurement
(paragraph 3.3.6) with limit comparisons and binning
(paragraph 3.8). You should first become familiar
with both ratio measurement and binning procedures
because the combined procedure (as follows) can
be somewhat tricky. Just as the display is a dimen-
sionless number in ratio measurement, so the limit
comparisons are made on dimensionless ratios in this
combined procedure.
Plan ahead so that you have in mind what the ratio
display will be like for any given measurement. For
entering bin limits, each nominal ratio is the ratio
display that would be expected if a corresponding
nominal valued DUT were measured.
1693 RLC Digibridge
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