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6.c. Use 3rd U/S Probe: Set to 1 and the default action is to use CH2 (when
available) as the U/S signal for CH0 and CH1. Set to 0 and all probes to be
used as D/S signals. The Factory Default is 1.
6.d. Apply SINE Unc: This is the SINE multiplier of the Standard Deviation in
BGECT. It was an attempt to convey the uncertainty in the BGECT in the
regression line by applying a SINE wave to the BGECT Line. However, this
adds noise to an already busy graph so it is set to Zero as default.
6.e. Anomaly Detect: Sometimes an EC measurement device will produce an
anomalous value, like zero, for no known reason. This erroneous mea-
surement can corrupt a calculated Q, the associated uncertainty, and also
the plot. Set parameter to a non-zero value to instruct QQ to set record-
ed EC.T values less than this anomaly value to the previous measure-
ment. Set to zero to disable this feature. The factory default is 1 uS/cm.
6.f. Sound Volume %: Adjust to change “Quack” volume.
6.g. LCD Contract: Adjust to improve contrast.
6.h. B-Light Bright %: Adjust to change Background Light. Factory Default is 50%.
6.i. Use Regression Line: This will determine if the regression line is used to
calculate Uncertainty for a given channel. Factory default is 1.
6.j.
Show BGECT Line: Set to display the BGECT Regression Line. Factory default is 1.
6.k. BGECT Reg.Snap Tol%: The uncertainty obtained from the chosen Un-
certainty method before the regression line will snap to both Pre- and
Post- BGECT Samples. Before this occurs, only the Pre-BGECT is used in
the regression line equation.
6.l. Trans.Min.Size: The minimum number of characters to be considered a
valid transmission. Factory Default is 23.
6.m. Auto Adj. Pre-BGECT: Enter a number between 1 and 30 to indicate the
number of points before 5
σ
(5 standard devations) from the Pre-BGECT
the trace is exceeded in order to reset the Pre-BGECT endpoint. During a
measurement, the QiQuac will record the mean and
σ
of the Pre-BGECT.
When the current ECT value exceeds 5
σ
, we can be 99.9999% confident
that it is significantly larger than the Pre-BGECT and the Pre-BGECT end
will move N values back from this time. When this occurs, the QiQuac
will quack quickly and the EC.T label will change from “ECT:” to “ECT=”.
Enter 0 to turn off this feature. Default is 5 points.
6.n. Restore Defaults: Select to restore factory defaults.
6.o. Back Select to return to the setup menu.
7. Serial Term
Select to access a serial terminal program (baud 9600, 8,N,1)
C H A P T E R 4 : Q IQUAC M E N U S YS T E M
