Rice Lake 482-AG, Technical Manual

Page: 23 / 60

Configuration
© Rice Lake Weighing Systems ● All Rights Reserved 19
3.1.1 Digital Filtering
Digital filtering is used to create a stable scale reading in challenging environments. The 482-AG (firmware version 1.03 and
later) allows for the selection of adaptive filtering, rolling filtering or off for no filtering. The A/D sample rate must be selected
first. Then select the type of digital filter using the DIGFIL parameter.
Figure 3-2. Adaptive Filter and Rolling Averaging Filter Sub-menu
Parameter Settings Description
AFSENS LIGHT
MEDIUM
HEAVY
Digital filter cutout sensitivity – the light setting responds quickly to small weight changes and is less stable; the heavy setting
responds slowly to small weight changes and is more stable; use the heavy setting in an unstable environment
AFTHRH 000002 Digital filter cutout threshold – specifies the filter threshold, in weight value; when a weight change exceeds the value set for
threshold, digital filtering is suspended; a setting of 0 disables the filter; the decimal point in the entered value is assumed;
if the dd is 1 lb, a value of 1 is equal to 1 lb; if the dd is 0.1 lb, a value of 1 is equal to 0.1 lb
LOCK SEC The lock setting prevents the filter from resetting adaptive filtering; The threshold will not reset filtering until the specified lock
time is met
RFSTG1
RFSTG2
RFSTG3
2
4
8
16
32
64
1
Rolling filter stages – the number of A/D samples that are averaged in each stage; a higher number gives a more stable
display by minimizing the effect of a few noisy readings, but slows down the settling rate of the indicator
RFSTG1 Default - 16
RFSTG2 Default - 32
RFSTG3 Default - 32
RFSENS 8OUT
16OUT
32OUT
64OUT
128OUT
2OUT
4OUT
Rolling filter cutout sensitivity – specifies the number of consecutive readings that must fall outside the rolling filter threshold
(RFTHRH parameter) before digital filtering is suspended; if NONE is selected, the filter is always enabled
RFTHRH NONE
2 dd
5 dd
10 dd
20 dd
50 dd
100 dd
200 dd
250 dd
Rolling filter cutout threshold – specifies the rolling filter threshold, in display divisions; when a specified
number of consecutive scale readings (RFSENS parameter) fall outside of this threshold, digital filtering is suspended;
if NONE is selected, the filter is always enabled
Table 3-3. Adaptive Filter Parameters
ADPFIL
AFTHRH
000002
AFSENS
LIGHT
MEDIUM
HEAVY
2OUT
4OUT
8OUT
16OUT
32OUT
64OUT
128OUT
RFSENS
NONE
2 dd
100 dd
50 dd
20 dd
10 dd
5 dd
200 dd
250 dd
RFTHRH RFSTG1
2
4
8
16
32
64
1
ROLFIL
RFSTG2
2
4
8
16
32
64
1
RFSTG3
2
4
8
16
32
64
1
MENU CONFIG FORMAT CALIBR PROGRM PASWRD TEST
LOCK
SEC