Instruction Manual
9.2.9 FIL TI (Filter Time Constant)
Filter time constant is used to determine the number of readings the meter will average before displaying an input
value. The choices are 001, 002, 004, 008, 016, 032, 064, or 128.
For fixed filtering, the averaged number of samples is fixed; for Automatic Bandwidth Control, the chosen value is
the maximum number of samples in the average computed by ABC when the input is not changing significantly
(ABC, for slowly-moving signals, filters by averaging the “TI” number of samples, but follows signal changes rapidly
by decreasing that averaging number).
Pressing the ‘MENU’ button stores your selection and moves on to “RESET 1” and then to “RUN” (unless setpoints,
outputs, or communications have been unlocked for programming change).
MENU BUTTON
MAIN MENU
MIN/MAX/MENU *
BUTTON SUB MENU
DESCRIPTION
FILTER TIME CONSTANT
“001”
“002”
“004”
“008” Number of readings used in averaging.
“016”
“032”
“064”
“FIL TI”:
“128”
* Press the ‘MIN’ button to show “001”, “002”, “004”, “008”, “016”, “032”, “064” or “128”.
Press the ‘MAX’ button to select one of the above.
Press the ‘MENU’ button to store the selection made and to advance the meter to the next menu (“SP CNF”).
The underlined item is the factory preset value.
9
.2.10 SP CNF (Setpoints 1 & 2 Configuration)
Refer to Section 10 for an in-depth discussion of these features.
Setpoint configuration is used to select:
• the active zone of each setpoint to above and below the setting
• [SPC.1 & SPC.4]
• whether the open-collector output is on or off [SPC.2 & SPC.5]
• whether the reading compared with the setpoints is filtered or unfiltered [SPC.3 & SPC.6]
• enabled or disabled setpoints [SPC.7]
• enabled or disabled setpoint LED displays [SPC.8]
MENU BUTTON
MAIN MENU
MIN/MAX/MENU *
BUTTON SUB MENU
DESCRIPTION
SETPOINTS 1 & 2 CONFIGURATIONS
Setpoint 1 Active Zone:
“SPC.1=0”
Above
“SPC.1=1” Below
Setpoint 1 open-collector or relay output Active ON or OFF:
“SPC.2=0”
On
“SPC.2=1” Off
Filtered/unfiltered reading compared with Setpoint 1 value:
“SP CNF”:
“SPC.3=0” Unfiltered
CF 67 40 M1291/N/0403 11279ML-02 Rev. A