R
32
•
none of the remaining measurements shall be
below 0.9 x NDFT.
Figure 37. Pass/Fail criteria for 90/10 rule
When PSPC statistics are selected the standard
statistics displayed on the screen are replaced by
those for PSPC (Figure 38):
Figure 38. PSPC statistics - selected and
displayed on reading screen
While you are taking readings with PSPC statistics
selected, your gauge will beep and flash the LED:
Pass
:
1 beep
Green flash
Fail (90%)
:
3 beeps Green flash
Fail (<0.9xNDFT)
:
3 beeps Red flash
6.6 DISPLAY
Only applies when using dual function probes.
Allows selection of the types of readings used in the
statistical calculation when a dual function probe is
connected.
Probe
Options
FNF
F, N or F and N combined
j
F1 2
F1, F2 or F1 and F2 combined
SUBSTRATE
NDFT
0.9 x
COATING
NDFT
At least 90% of
all readings
must be in this
zone...
... no readings
must be in this
zone
To PASS 90/10
AND
90/10 FAILED if
Less than 90%
of all readings
are in this
zone...
OR
... any readings
are in this zone
Op_456_3_English.book Page 32 Thursday, January 22, 2009 7:58 PM