DPM-500 Analog Input Meter Instruction Manual
39
Display
Parameter
Action/Setting
20 nmA
20 mA output
Enter mA output value
read by milliamp meter
with at least 0.001 mA
resolution
user
User I/O
Assign function keys and
digital I/O
F1
F1 function key
Assign F1 function key
F2
F2 function key
Assign F2 function key
F3
F3 function key
Assign F3 function key
F4
F4 function
Assign F4 function (digital
input)
dI I
Digital input 1
Assign digital input 1
– 8, if
expansion modules are
connected
dO 1
Digital output 1
Assign digital output 1
– 8,
if expansion modules are
connected
ICal
Internal source
calibration
Enter internal source
calibration (used for
scaling the meter without a
signal source)
Display
Parameter
Action/Setting
C CAL
Current
calibration
Calibrate 4-20 mA current
input (internal reference
source used for scaling the
input)
C lo
Current low
Calibrate low current input
(e.g. 4 mA)
C Hi
Current high
Calibrate high current input
(e.g. 20 mA)
v CAL
Voltage
calibration
Calibrate voltage input
v Lo
Voltage low
Calibrate low voltage input
(e.g. 0 V)
v Hi
Voltage high
Calibrate high voltage input
(e.g. 10 V)
Diag
Diagnostics
Display parameter settings
LED t
LED test
Test all LEDs
Info
Information
Display software and S/N
information
Erase
Erase
Erase MeterView Pro
software stored in meter’s
memory
Noise Filter (
filter
)
The noise filter is available for unusually noisy signals that cause an unstable process variable display.
The noise filter averages the input signal over a certain period. The filter level determines the length of
time over which the signal is averaged. The filter level can be set between 2 and 199. The higher the filter
level, the longer the averaging time and so the longer it takes the display to settle to its final value. Setting
the filter level to zero disables the filter function.
Noise Filter Bypass (
bypass
)
The noise filter bypass changes the behavior of the meter so that small variations in the signal are filtered
out but large abrupt changes in the input signal are displayed immediately. The bypass value determines
the minimum amount of signal change to be displayed immediately. All signal changes smaller than the
bypass value are filtered or averaged by the meter. The noise filter bypass may be set between 0.1 and
99.9% of full scale.
Rounding Feature (
round
)
The rounding feature is used to give the user a steadier display with fluctuating signals. Rounding is used
in addition to the filter function.
Rounding causes the display to round to the nearest value according the rounding selected. See
examples below:
Rounding
Selection
Actual
Value
Display
Value
Actual
Value
Display
Value
1
12.022
12.022
12.023
12.023
5
12.022
12.020
12.023
12.025
10
12.024
12.020
12.025
12.030
