Appendix
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11.4 Audit Trail Support
Audit trail support provides tracking information for configuration and calibration events. To prevent potential misuse, all
configuration and calibration changes are counted as change events.
Audit trail information can be printed from Revolution or by sending the DUMPAUDIT serial reporting command. Revolution can
be used to display audit trail information. The audit trail display includes the legally relevant (LR) version number (firmware
version for the code which provides audit trail information), a calibration count and a configuration count.
See
for steps to view the Audit Trail counters.
11.5 Conversion Factors for Secondary Units
The 680HE has the capability to mathematically convert a weight into many different types of units and instantly display those
results with a press of the
Units
key.
Secondary units can be specified on the Format menu using the
SECNDR
parameter.
Multipliers are preconfigured within the indicator.
Ensure the secondary decimal point position is set appropriately for the scale capacity in the secondary units.
11.6 Digital Filtering
Digital filtering is used to create a stable scale reading in challenging environments. The 680HE allows selection of
Digital
Rolling Average Filtering
),
Adaptive Filtering
(
),
Damping
(
) or
None
(RAW) for no filtering. See
for configuration menu layout and the location of FLTCHN
parameter.
The scale’s sample rate effects all types of filtering. The A/D sample rate is selected by the SMPRAT scale parameter. The A/D
sample rate is the number of weight readings the indicator takes per second (SMPRAT). This can be 6.25, 7.5, 12.5, 15, 25, 30,
50, 60 or 120 hertz (readings per second). Set the A/D sample rate to the lowest setting required for the application. Lower
settings result in better stability.
11.6.1 Digital Rolling Average Filter (AVGONL)
The digital rolling average filter uses mathematical averaging with three stages. These configurable stages control the effect of
a single A/D reading on the displayed weight. When an A/D reading outside of a predetermined band is encountered, the digital
rolling average filter is overridden and the display jumps directly to the new value.
Digital Filter Stages (DIGFL1-3)
The filter stages can each be set to a value of 1–256. The value assigned to each stage sets the number of readings received
from the preceding filter stage before averaging. Setting the filter stages to 1 effectively disables the rolling filter.
A rolling average is passed to successive filtering stages for an overall filtering effect which is effectively a weighted average of
the product of the values assigned to the filter stages (
DIGFL1 x DIGFL2 x DIGFL3
) within a time frame corresponding to the
sum of the values (
DIGFL3
).
Digital Filter Sensitivity (DFSENS) and Threshold (DFTHRH)
The rolling averaging filter can be used by itself to eliminate vibration effects, but heavy filtering also increases settling time.
The
DFSENS
and
DFTHRH
parameters can be used to temporarily override filter averaging and improve settling time.
•
DFSENS
specifies the number of consecutive A/D readings which must fall outside the filter threshold (
DFTHRH
) before
filtering is suspended
•
DFTHRH
sets a threshold value, in display divisions; When the specified number of consecutive A/D readings
(
DFSENS
) fall outside of this threshold, filtering is suspended; Set
DFTHRH
to
NONE
to turn off the filter override
Note
Summary of Contents for Synergy 680HE
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