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1693 RLC Digibridge
6. To enter RLC limits for bins 1-13, three
methods are given:
Symmetrical percentage tolerances (nested bins).
A. Enter the nominal value or DUTs to be
sorted.
The value appears on the RLC display.
For example, to enter 123.40 as the nominal value, press
[1][2)[3][.][4][=][SHIFT][=[NOM VAL].
B. Enter for bin 1 the narrowest percent toler-
ance to be sorted.
For example, for a tolerance of ±0.2% press [.] [2][%]
[=][SHIFT][BIN NO][0][1].
The numerical limits for RLC are automatically
computed and rounded off values appear on the
Digibridge displays (upper limit at the left, lower at the
right).
C. For bin 2, enter the next wider tolerance,
similarly.
Be sure to use 2 digits for the bin number.
D. Repeat the procedure for bins 3, 4, 5, ... up
to a maximum of 13 bins.
Various nominal values (bucket sort). Plan for non-
overlapping bins, each with a nominal value and limits
defined by percent tolerance.
A. For bin 1, enter nominal value and toler-
ance as described above.
B. For each successive bin, similarly enter a
new nominal value, then the tolerance and
bin number.
Changing the nominal value does not affect limits
already stored.
Any DUT that qualifies for 2 overlapping bins will
automatically be assigned to the lower bin.
Unsymmetrical tolerances:
To enter unsymmetrical limits, for example
+2% -5% in bin 6, press [2][%][-][5][%][=]
[SHIFT][BIN NO][0][6].
Two percentages of the same sign can be entered.
Always enter the more positive tolerance first.
7. You can close any bin that has been opened:
A. For RLC bins (closing bin 8 as an exam-
ple), press [0][=][SHIFT][BIN NO][0][8].
B. For D or Rs or Q with R (closing bin 0),
press [9][9][9] [9][=][SHIFT][BIN NO]
[0][0].
C. For Rp or Q with L (closing bin 0), press
[0][=][SHIFT][BIN NO][0][0].
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8. To enable GO/NO-GO lights after opening at
least one bin, leave "nominal value" at any
non-zero value.
9. To disable GO/NO-GO and all bin sorting,
press [0][=][SHIFT][NOM VAL].
Note: To see the present numerical limits for bin 3 (for
example), press [SHIFT][BIN NO][0][3]. Similarly,
to see the nominal value, press [SHIFT][NOM VAL].
10. To measure a DUT with bin sorting:
A. Press the [FUNCTION] key to select
MEASURE.
B. Press the [DISPLAY] key to select BIN
NO.
C. Insert the DUT.
D. If the measure mode is TRIGGERED,
press the START button.
E. Observe GO/NO-GO and bin-number
results.
NO-GO indicates either QDR failure (bin 0) or RLC
failure (bin 14). See also paragraph 3.1.4.
For continued operation of the Digibridge, in
MEASURE function, using the limits entered as
above, you can select any desired display, such as
VALUE, or BIN No., with the [DISPLAY] key. (If
you have the interface option, the available output
data are not limited to the display selection.) The
GO/NO-GO lights will operate unless you inhibit
comparisons. (See below.)
3.8.4 Verification of Nominal and
Limit Values
While the function is ENTER, the exact values en-
tered into the Digibridge can be seen by either of 2
methods, as follows.
During the Entry Process: A confirming display is
automatically provided immediately after the [mal
keystroke of each entry step. For example, after the
[NOM VALUE] keystroke, the entered value appears
on the RLC display. After the (BIN NO) and number
keystrokes , the actual limits of RLC value (not per-
centages) appear across the full display area: upper
limit on the regular RLC display, lower limit (4 most
significant digits) in the regular RLC display area.
For bin 0, the QDR limit appears in the QDR area.
Operation
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