A&D AD-4430B Instruction Manual - page 2
6.3. Digital Linearization ( )
Digital linearization is the non-linearity compensation function that can rectify or
reduce linearity deviation between zero point and weighing capacity.
Up to four points can be specified except zero. (Refer to
)
Relationship of points : Zero =
<
<
<
<
The high-order correction curve is used so that zero point and individual points
are arranged in a straight line.
Digital linearization includes span calibration.
When
and a number are displayed, an error has occurred. Refer to
"Calibration Error" for details.
A flashing decimal point means "no weighing value".
Before calibration, turn on the AD4430B more than 10 minutes so as to avoid
temperature drift (change).
Step 1 When turning off the display, press and hold
the key and press the
key ( +
key). Then
of calibration mode
is displayed. Press the
key to display
.
Step 2 Press the
key to select
and
press the
key to enter digital
linearization.
Step 3
of the zero point is displayed.
Step 4 Place nothing on the pan.
While
LED is displayed, press the
key to store the weighing value.
Then
is displayed for 2 seconds.
Step 5 When displaying
,
press the
key to select
a mass value. Specify it using
the
and
key.
Step 6 Place the mass on the pan.
While
LED is displayed,
press the
key to store
the weighing value.
Then
is displayed
for 2 seconds.
Step 7
is displayed. Repeat the same
operation as Step 5 and Step 6 at the
second point.
Step 8
is displayed. Repeat the same
operation as Step 5 and Step 6 at the third
point.
Step 9
is displayed. Repeat the same
operation as Step 5 and Step 6 at the fourth
point.
Step 10
is displayed. Press the
key
to store new parameters into FRAM and
display
.
Step 11 Press the
key to return to weighing mode.
Remove all of mass from the pan.
7. Function Mode (Function List)
The function mode stores parameters to control the weighing module.
The parameters are stored even without power supplied.
7.1. Outline
Types of Functions
............Calibration
............Linearity
.............Basics
............Hold function
............BCD output
The input voltage of the zero point (
), the span input voltage (
),
mass for span input voltage (
) are revised in calibration mode.
The decimal point flashes in function mode.
If
pressing
the key while displaying the digital filter (
), the current
weighing value can be monitored. Press the
key again to return function
mode.
7.2.
Operation
7.2.1.
Select Modes Under Function Mode
..............Selects a type of select mode (3 upper figures)
..........Enters a selected mode.
..............Selects an item under the selected mode (2 lower figures)
..........Enters the item.
..........Stores parameters and returns to weighing mode.
7.2.2.
Parameters Selection And Digital Parameters
P
Type of parameter selection ( all figures flashing)
..........Selects a parameter.
.......Activates (store) parameter and returns to select mode.
.......Deactivates parameter and returns to select mode.
D
The type to change value ( figure flashing )
..........Moves the flashing figure.
..........Changes the value of the flashing figure.
.......Activates (store) value and returns to select mode.
.......Deactivates value and returns to select mode.
7.3.
Types and Items
7.3.1.
Calibration (
) Of Select Mode
Item
Range
Item Name
Descriptions
Default
Type
0 to 0.0000
Decimal point
position
Decimal point position of value.
0 0.0 0.00 0.000 0.0000
0
P
1 to 50
Minimum division
(A scale / digit)
Minimum division of value.
1 2 5 10 20 50
1
P
1 to 99999
Weighing capacity
(Max. measurement)
Measurement can be displayed up to +8 digits
(8 scales) from capacity. Decimal point
depends on
.
70000
D
0 to 100
Zero adjustment
range
The range that the
key (zero key) works.
Deviation from the calibrated zero point [%].
2
D
0.0 to 5.0
Zero tracking time Used with
for zero tracking [sec.]
0.0
D
0.0 to 9.9
Zero tracking band Used with
for zero tracking [digit]
0.0
D
0.0 to 9.9
Stability detection
time
Used with
for stability detection [sec.]
1.0
D
0 to 9
Stability detection
band
Used with
for stability detection [digit]
2
P
0 to 1
Tare and zero
adjustment when
unstable
The adjustment when value is unstable.
0: Disables
both
functions.
1: Enables both functions.
1
P
0 to 1
Tare when the
gross weight is
negative
Tare when the gross weight is negative.
0: Disables
tare.
1: Enables
tare.
1
P
0 to 1
Output when
overflow and
unstable
Serial output when overflow and unstable.
0: Disables
output.
1: Enables
output.
1
P
1 to 3
Exceeding negative
gross weight
Judgment when the negative gross is exceeded.
1: Gross
<
-99999
2: Gross
<
-capacity
3: Gross
<
-19
digit
1
P
1 to 2
Exceeding negative
net weight
Judgment when the negative net is exceeded.
1: Gross < -99999 2: Gross < -Capacity
1
P
0 to 1
Clear the zero
value
Select to clear the zero value.
0: Disable
1: Enable
1
P
0 to 1
Zero setting when
power is turned on
When turning power on,
0: Disable
1: Enable
0
P
-7.0000 to
7.0000
Input voltage at
zero
Input voltage of the zero point [mV/V]
0.0000
D
0.0001 to
9.9999
Input voltage at
span
Input voltage of the full scale [mV/V]
3.2000
D
1 to 99999
Calibration weight
corresponding to
input voltage at span
Mass value to equivalent to span input
voltage. (
) Decimal point depends on
.
32000
D
9.7500 to
9.8500
Gravity acceleration
of place of
calibration
Gravity acceleration of the place where
calibrating the module. [m/s
2
]
9.8000
D
9.7500 to
9.8500
Gravity acceleration
of place of use
Gravity acceleration of the place where using
the module. [m/s
2
]
9.8000
D
0 to 1
Disable averaging
hold
When turning on, the zero operation.
0: Enable
1: Disable
0
P
7.3.4.
Hold Function (
) Of The Select Mode
Item
Range
Item Name
Descriptions
Default
Type
0.00
to 9.99
Average
time
Time to calculate the average. [sec.]
0.00 : Not used
0.00
D
0.00
to 9.99
Start wait
time
Time to wait before commencing hold or
averaging. [sec.]
0.00
D
0 to 2
Condition of
automatic
start
Condition for starting the hold or averaging.
0: Not used
2: Above the near-zero range
1: Above the near-zero range, and stable
0
P
0 to 1
Release due
to falling
control input
Release when control input is falling.
0: Do not release
1: Release
1
P
0.00
to 9.99
Time release
Release after a set amount of time has
passed. [ sec.] 0.00 : Continue
0.00
D
0 to 99999
Release due
to range of
fluctuation
Release when fluctuation from the holding
value exceeds a set value. Decimal point
depends on
. 0 : Continue
0
D
0 to 1
Release in
near-zero
range
Release when the weighing value is in the
near-zero range.
0: Do not release.
1: Release.
0
P
7.3.5.
BCD Output (
) Of The Select Mode
Item
Range
Item Name
Descriptions
Default
Type
1 to 4
Output data
1: Weighing value 3: Net weight
2: Gross weight
4: Data specified at BCD input
1
P
1 to 3
Data transfer
mode
1: Stream
3: Manual
printing
2: Automatic
printing
1
P
5 to 1000
Data transfer
rate
5
times/sec.
10
times/sec. (Depends
on
)
20
times/sec.
100
times/sec.
1000 times/sec.
20
P
1 to 2
Output logic of
data transfer
1: Positive logic
2: Negative logic
2
P
1 to 2
Output logic of
negative sign
1: Positive logic
2: Negative logic
2
P
1 to 2
Output logic
of status
1: Positive logic
2: Negative logic
2
P
1 to 2
Output logic
of strobe
1: Positive logic
2: Negative logic
2
P
0 to 5
Input
selection
0: None
1: Clear
zero
2: Clear
tare
3: Changing between gross and net
4: Print
command
5: key
3
P
0 to 12
Output
selection
0: None
1: Stabilization
2: During
tare
3: Zero
band
4: Hold busy state
5: HI output (Over upper limit)
6: OK output (Within upper and lower limits)
7: LO output (Under lower limit)
8: During operating weighing (On)
9: During operating weighing (1 Hz)
10: During operating weighing (50 Hz)
11: Alarm (Zero correction error and tare error)
12: Busy key
1
P
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
Fax: [81] (3) 5391-6148
7.3.2.
Linearity (
) Of The Select Mode
Item
Range
Item Name
Descriptions
Default
Type
1 to 4
Number of input
points
Number of adjustment point. If 0, 1 or 2 is
selected, digital linearization is not used.
0
P
7.0000 to
7.0000
Linear-zero
Input voltage for linear-zero input. [mV/V]
0.0000
D
0 to 99999
Linear 1
Mass value
The mass value for linear 1 input.
Decimal point depends on
.
0
D
0.0000 to
9.9999
Linear 1
Span voltage
The span voltage between linear-zero and linear
1 input. [mV/V]
0.0000
D
0 to 99999
Linear 2
Mass value
The mass value for linear 2 input.
Decimal point depends on
.
0
D
0.0000 to
9.9999
Linear 2
Span voltage
The span voltage between linear-zero and linear
2 input. [mV/V]
0.0000
D
0 to 99999
Linear 3
Mass value
The mass value for linear 3 input.
Decimal point depends on
.
0
D
0.0000 to
9.9999
Linear 3
Span voltage
The span voltage between linear-zero and linear
3 input. [mV/V]
0.0000
D
0 to 99999
Linear 4
Mass value
The mass value for linear 4 input (Full scale).
Decimal point depends on
.
0
D
0.0000 to
9.9999
Linear 4
Span voltage
The span voltage between linear-zero and linear
4 input (Full scale). [mV/V]
0.0000
D
7.3.3.
Basics (
) Of The Select Mode
Item
Range
Item Name
Descriptions
Default
Type
0000
to 1111
Disable key
switchs
Figure corresponds to each key (switch).
These are enabled at weighing mode.
Figure
4 fig.
3 fig.
2 fig.
1 fig.
Parameter 0: Enable
1: Disable
0000
2 進数
D
0 to 7
key
0: None
4: Momentary switch
1: Print command
5: Display exchange
2: Hold
6: Tare clear
3: Alternative switch 7: Zero clear
(depends
on
)
5
P
1 to 3
Display update
rate
1: 20 times/s
2: 10 times/s
3: 5 times/s
20
P
0 to 9
display
0: None
1: Zero tracking in progress
2: Alarm (Zero range setting error, over)
3: key status
4: Zero band
5: HI output (Over the upper limit value)
6: OK output (Between upper and lower limit values)
7: LO output (Below the lower limit value)
8: User input 1
9: User output 1
0
P
0 to 16
Low pass digital
filter
Selects a cutoff frequency.
0: None
6: 20.0 Hz
12: 2.8 Hz
1: 100.0 Hz
7: 14.0 Hz
13: 2.0 Hz
2: 70.0 Hz
8: 10.0 Hz
14: 1.4 Hz
3: 56.0 Hz
9: 7.0 Hz
15: 1.0 Hz
4: 40.0 Hz
10: 5.6 Hz
16: 0.7 Hz
5: 28.0
Hz
11: 4.0
Hz
15
P
1 to 3
Hold
1: Hold
immediately
2: Peak
hold
3: Averaging
hold
1
P
-99999 to
99999
Set value of
near-zero
The reference value for near-zero.
Decimal point depends on
.
10
D
1 to 2
Mass to be compared
with near-zero
1: Gross
weight 2: Net
weight
1
P
-99999 to
99999
Set value of
upper limit
Reference value for the upper limit.
Decimal point depends on
.
10
D
-99999 to
99999
Set value of
lower limit
Reference value for the lower limit.
Decimal point depends on
.
-10
D
1 to 2
Mass to be compared
with upper & lower limit
1: Gross
weight 2: Net
weight
1
P
1 to 2
Output logic of upper
and lower limit
The logic of the comparator function output.
1: Positive
logic
2: Negative
logic
1
P
-
5-
-
6-
-
7-
-
8-
key
key
key
key
key
LED Stable
key
key
key
LED Stable
key
Key to store data
Digital
linearization
In measuring
Zero point
Input No.
Example
Example
In measuring
Input No.
At each point,
perform the
same
operation and
measurement.
Input No.
Input No.
Place mass
Remove
mass
The same as step 5,6
The same as step 5,6
The same as step 5,6