OHAUS 2500 User manual

Defender 2500 Bench Scale
Instruction Manual

REVISION HISTORY
Date
Version
Description
May 12
th
2023
A
Initial release
July 14th 2023
B
Merge EN and PL

Defender 2500 EN-1
TABLE OF CONTENTS
1. INTRODUCTION .........................................................................................................................................2
1.1. Safety Precautions ...................................................................................................................................2
1.2. Intended Use ............................................................................................................................................2
1.3. Overview of Parts and Controls ...............................................................................................................3
1.4. Control Functions .....................................................................................................................................3
2. INSTALLATION...........................................................................................................................................5
2.1 Packing List ..............................................................................................................................................5
2.2 Setup ........................................................................................................................................................5
2.2.1 Power Supply Connection.................................................................................................................5
2.2.2 PC Connection..................................................................................................................................5
2.2.3 Column Mount Installation ................................................................................................................6
2.3 Selecting the Location ..............................................................................................................................7
3. OPERATION................................................................................................................................................8
3.1 Turning On/Off the Terminal ....................................................................................................................8
3.2 Setting the Display to Zero .......................................................................................................................8
3.3 Changing the Units of Measure................................................................................................................8
3.4 Printing Data.............................................................................................................................................8
3.5 Application Modes ....................................................................................................................................8
3.5.1 Weighing ...........................................................................................................................................8
3.5.2 Totalization........................................................................................................................................9
3.5.3 Dynamic Weighing / Display Hold.................................................................................................. 10
3.5.4 Peak Hold....................................................................................................................................... 12
3.5.5 Counting......................................................................................................................................... 12
4. MENU SETTINGS .................................................................................................................................... 13
4.1 Menu Navigation ................................................................................................................................... 13
4.1.1 User Menu (In segments) .............................................................................................................. 13
4.1.2 Button Navigation........................................................................................................................... 14
4.2 Calibration Menu ................................................................................................................................... 14
4.2.1 Initial Calibration............................................................................................................................. 15
4.2.2 Zero Calibration [ZErO] ................................................................................................................... 15
4.2.3 Span Calibration [SpaN] .................................................................................................................. 15
4.2.4 Linearity Calibration [LIN] ............................................................................................................... 16
4.2.5 GEO Code Adjustment [GEO] .......................................................................................................... 16
4.2.6 Calibration Test [C.test] ................................................................................................................. 17
4.2.7 End Cal [End] ................................................................................................................................. 17
4.3 Setup Menu ........................................................................................................................................... 17
4.4 Readout Menu....................................................................................................................................... 18
4.5 Unit Menu .............................................................................................................................................. 20
4.6 RS232 Menu ......................................................................................................................................... 20
4.7 Print Menu ............................................................................................................................................. 21
4.8 Lock Button Configuration..................................................................................................................... 24
5. LEGAL FOR TRADE................................................................................................................................ 25
5.1 Settings ................................................................................................................................................. 25
5.2 Verification............................................................................................................................................. 25
5.3 Sealing .................................................................................................................................................. 26
6. COMMUNICATION................................................................................................................................... 27
6.1 Terminal to Device Port Connections.................................................................................................... 27
6.1.1 USB (Type C) Port ......................................................................................................................... 27
6.1.2 RS232 Port..................................................................................................................................... 28
7. MAINTENANCE ....................................................................................................................................... 29
7.1 Cleaning ................................................................................................................................................ 29
7.2 Troubleshooting..................................................................................................................................... 29
7.3 Service Information ............................................................................................................................... 29
8. TECHNICAL DATA .................................................................................................................................. 30
8.1 Specifications ........................................................................................................................................ 30
8.2 Drawings and Dimensions .................................................................................................................... 31
8.3 Table of GEO Code Values................................................................................................................... 32
9. COMPLIANCE.......................................................................................................................................... 33
10. APPENDICES........................................................................................................................................... 35
10.1 MT Standard Continuous Output .......................................................................................................... 35
10.2 MT-SICS Commands ............................................................................................................................ 37
10.3 OHAUS Commands .............................................................................................................................. 38
10.4 OH-Continuous Print ............................................................................................................................. 39

EN-2 Defender 2500
1. INTRODUCTION
This manual contains installation, operation, and maintenance instructions for Defender 2500. This instruction
manual helps you to install and use this scale easily. Therefore, you must read it carefully before installation
and operation.
1.1. Safety Precautions
Definition of Signal Warnings and Symbols
Safety notes are marked with signal words and warning symbols. These show safety issues and warnings.
Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions and false results.
Signal Words
WARNING
For a hazardous situation with medium risk, possibly resulting in severe injuries or
death if not avoided.
CAUTION
For a hazardous situation with low risk, resulting in damage to the device or the
property or in loss of data, or minor or medium injuries if not avoided.
ATTENTION
For important information about the product. May lead to equipment damage if not
avoided.
NOTE
For useful information about the product.
Warning Symbols
General hazard Explosion hazard Electrical shock hazard
Safety Precautions
CAUTION: Read all safety warnings before installing, making connections, or servicing this
equipment. Failure to comply with these warnings could result in personal injury and/or property
damage. Retain all instructions for future reference.
Before connecting power, verify that the equipment’s input voltage range and plug type are
compatible with the local AC mains power supply.
Do not position the equipment such that it is difficult to reach the power connection.
Make sure that the power cord does not pose a potential obstacle or tripping hazard.
Operate the equipment only under ambient conditions specified in these instructions.
The equipment is for indoor use only.
Do not operate the equipment in wet, hazardous, or unstable environments.
Do not allow liquids to enter the equipment.
Use only approved accessories and peripherals.
Disconnect the equipment from the power supply when cleaning.
Service should only be performed by authorized personnel.
WARNING: Never work in an environment subject to explosion hazards! The housing of the
instrument is not gas tight. (Explosion hazard due to spark formation, corrosion caused by the
ingress of gases).
WARNING: Electrical shock hazards exist within the housing. The housing should only be opened by
authorized and qualified personnel. Remove all power connections to the unit before opening.
1.2. Intended Use
This instrument is intended for use in pharmacies, schools, businesses and light industry. It must only be used
for measuring the parameters described in these operating instructions. Any other type of use and operation
beyond the limits of technical specifications, without written consent from OHAUS, is considered as not
intended. This instrument complies with current industry standards and the recognized safety regulations;
however, it can constitute a hazard in use. If the instrument is not used according to these operating
instructions, the intended protection provided by the instrument may be impaired.

Defender 2500 EN-3
1.3. Overview of Parts and Controls
Figure 1-1 Defender 2500
Item
Description
Item
Description
1
Front Housing
6
RS232 Connector
2
Control Panel
7
USB Type-C Connector
3
Rear Housing
8
Mini DIN Connector
4
Screws (4)
9
Load Cell Connector
5
Battery Cover
1.4. Control Functions
Figure 1-2 Defender 2500 Control Panel
1
2
4
5
3
6
7
8
9

EN-4 Defender 2500
Button
Primary Function
(Short Press)
On/Zero
If the terminal is
off, short press to
turn on the
terminal.
If the terminal is
on, short press to
set the display
value to zero.
Print
If an interface is
enabled, the current
display value can be
transmitted to the
interface port.
Function
This key initiates
the specific
function in
different
application modes.
Tare
Performs a tare
operation.
Secondary
Function
(Long Press)
Off
If the terminal is
on, long press to
turn off the
terminal.
Units
Changes the
weighing unit.
Mode
Changes the
application mode.
Menu
Enter the user menu.
Menu Function
(Short Press)
Yes
Selects the
current setting on
the display or
goes into a sub-
menu.
No
Moves to the next
menu or menu item.
Rejects the current
setting on the
display and moves
to the next available
one.
Back
Moves back to the
previous menu
item.
Exit
Exits the user menu.
Aborts a calibration in
progress.
NOTE:
•Short Press: Press the key less than 1 second.
•Long Press: Press and hold the key for more than 3 seconds.
Figure 1-3 Display
Item Description Item Description
1
Net weight symbol
7
Pound, Ounce, Pound:Ounce symbols
2
Preset Tare, Tare symbols
8
Kilogram, gram symbols
3
Negative symbol
9
Dynamic Weighing mode symbol
4
Totalization symbol
10
Pieces symbol
5
Stable weight symbol
11
Battery symbol
6
Center of Zero symbol
1
2
3
4
5
6
11
10
9
8
7

Defender 2500 EN-5
2. INSTALLATION
2.1 Packing List
Item
Description
Quantity
1
Terminal
1
2
USB cable
1
3
AC adapter
1
4
Column
1
5
Column adapter
1
6
Base including pan
1
7
Warranty Card
1
8
Instruction Manual
1
2.2 Setup
2.2.1 Power Supply Connection
The Type-C cable and the AC adapter can supply power to the terminal.
USB Power
1. Use the Type-A end of the USB cable to connect to the PC.
2. Use the other side of the USB cable to connect the terminal.
AC Adapter Power
1. Use the Type-A end of the USB cable to connect to the AC adapter.
2. Use the other side of the USB cable to connect to the terminal.
3. Plug the AC Adapter into the electrical outlet.
Dry Battery Power
4 disposable AA size dry batteries (not included) can supply power to the terminal.
1. Open the battery compartment door at the bottom of
the terminal.
2. Install the batteries in the battery compartment.
The battery symbol indicates the battery status:
Battery 5%~25% remaining
Battery 50%~75% remaining
Battery 25%~50% remaining
Battery 75%~100% remaining
2.2.2 PC Connection
USB to PC
USB is the preferred method of connection. If you connect a USB cable to the PC, it allows the USB
communication with the PC.
NOTE: The USB cable to a PC connection can supply power to the terminal as well.
1. Use the Type-A end of the USB cable to connect to the PC.
2. Use the other side of the USB cable to connect the terminal through the mounting hole in the bracket.
RS232 to PC
The RS232 is the alternative method of connection.
1. Connect the RS232 cable to the terminal through the
mounting hole in the bracket.
RS232
2. Connect the other side of the RS232 cable to the PC.
(Typically labeled COM 1, COM A or IOIOI).
3. To supply power, you can use the USB cable and AC
adapter or the dry batteries.
Battery

EN-6 Defender 2500
2.2.3 Column Mount Installation
1
2
3
5
7
4
6
8

Defender 2500 EN-7
2.3 Selecting the Location
To ensure accuracy, proper performance and safety, locate and operate the base on a stable, level surface.
Avoid locations with rapid temperature changes or excessive dust, air currents, vibrations, electromagnetic
fields or heat.
Level the base by adjusting the four leveling feet until the bubble in the level indicator is centered. A wrench
may be needed to loosen the locking nut above each leveling foot. When the base is level, retighten the locking
nuts up against the base to lock each foot into place.
NOTE: Ensure that the base is level each time its location is changed.
CORRECT INCORRECT

EN-8 Defender 2500
3. OPERATION
3.1 Turning On/Off the Terminal
To turn on the terminal, you can press the On button. The terminal performs a display test, and momentarily
displays the software version, the GEO value and then enters the last active weighing mode.
NOTE: If the hardware lock switch is enabled, LFt ON will also be displayed briefly.
To turn the terminal off, you can long press the Off button until OFF is displayed.
3.2 Setting the Display to Zero
The value of the display can be set to zero under the following conditions:
1. Automatically at Power On (Initial zero).
2. Semi-automatically (Manually) by pressing the ON/ZERO Off button.
3. Semi-automatically by sending the Zero command (Z or alternate zero command).
If you want to set the value of the display by pressing the ON/ZERO Off button, please make sure that the
terminal is stable.
3.3 Changing the Units of Measure
To change the weighing unit, you can long press the Print Units button until the wanted weighing unit appears
on the display.
3.4 Printing Data
Before you print out the displayed data with a printer or sending the data to a computer, please set the
communication parameters in the Print Menu.
You can press the PRINT Units button for sending the displayed data to the communication port.
3.5 Application Modes
Activating / Deactivating the Application Mode
Steps:
1. Long press the Menu button until mM.E.N.U appears on the display.
2. Release the Menu button, and C.A.L appears on the display.
3. Short press the No button several times until mM.O.d.E appears on the display.
4. Press the Yes button to enter the application mode.
5. Short press the No button several times until the wanted selection appears on the display.
6. Press the Yes button, and ON appears on the display. If you want to activate the application mode, short
press the Yes button. If you want to deactivate the application mode, short press the No button until OFF
appears on the display, then short press Yes button.
3.5.1 Weighing
This mode is the default factory setting, and it is used to determine the weight of the loads in the selected unit
of measure.
Entering the Mode and Starting to Weigh
Steps:
1. Long press the button Function Mode until wWEIGH appears on the display.
2. Put the container on the platform. Once the value is stable, you can see “*” on the display.
3. Press the button Tare to tare. If the terminal performs well, you can see the value on the display is 0.
4. Put the load on the container and read the weight value of the load from the display. Once the value is
stable, you can see the “*” is on the display.
NOTE: You can check the value of the tare weight by long pressing the Tare button.
The Weighing configurations are defined below (Defaults in Bold).
Item
Available Settings
Comments
Weighing (
wWeIGH
)On, off To enable or disable Weighing
NOTE: You cannot disable the Weighing mode if you are in the mode currently.

Defender 2500 EN-9
3.5.2 Totalization
This application is used to accumulate the multiple weights manually or automatically. Statistical data (the
number of samples, the total weight, the average weight, the minimum weight, the maximum weight and the
difference in weight) is stored in memory for review and printing.
Application Settings
There are three totalization options:
Off (OFF): Disable the totalization function.
Manual (mMAN): Enable the totalization function manually with Function button.
Automatic (AutO): The terminal performs the totalization function automatically.
NOTE: The option of Manual is the default setting.
Setting the Totalization Option:
1. Long press the Menu button until the mM.E.N.U appears on the display.
2. Release the Menu button, the C.A.L appears on the display.
3. Short press the No button several times until mM.O.d.E appears on the display, then press the Yes button.
If you do it successfully, you can see the reset on the display.
4. Short press the No button several times until t0tal appears on the display, then press Yes button to
enter the sub menu.
5. Short press the No button several times to select the wanted totalization option. If the wanted option
appears on the display, you can press Yes button to confirm.
6. Press the Exit button to exit.
Entering the Mode
1. Long press the Mode button until tOtAL appears on the display.
2. Release the Mode button, and the CLr.ACC appears on the display.
•If you need to remove the stored totalization result of the last time, you can press the Yes button, and
then the terminal performs a new round of totalization function.
•If you need to reuse the stored totalization result of the last time, you can press the No button to
continue the totalization of the last time.
NOTE: If there is a container on the platform, the display shows CLr.PAN until the container is removed or
you press the Tare button to tare.
Totalization Method
Manual: The operator initiates the totalization with the Function button.
Automatic: The terminal performs the totalization function automatically.
If the terminal performs the totalization well, you can see the ∑is flashing. It will keep flashing until the weight
is removed and the platform is stable.
NOTE:
•Before you weigh the next load, you must remove the previous load.
•The terminal only stores the stable value of the display.
•When Legal for Trade is turned ON, for NTEP/MC models, gross and net weight cannot be added to the
same total. If the first weight is recorded in gross, the next one should be recorded in the same way. It is
the same for the net weight.
Checking the Totalization Result
You can press the Function button to check the result.
The result includes the number of samples, the total weight, the average weight, the minimum weight, the
maximum weight and the difference in weight (the maximum weight minus the minimum weight). The values
are displayed for 1 second each.
Totalization Rules
You will fail to do the totalization operation under the following conditions.
1. The current weight value is unstable.
2. The net weight of the load is smaller than 5d.
3. The overall totalized weight is larger than 999999.（The unit depends on your setting.）
4. The total number of totalizations exceeds 9999 times.

EN-10 Defender 2500
Printing Totalization Result and Format
1. Refer to the steps below, you can enable the Table on (tABLE) option in the menu.
a) Long press the Menu button until you see mM.E.N.U.
b) Release the Menu button and C.A.L. appears on the display.
c) Short press the No button several times until mM.O.d.E appears on the display.
d) Press the Yes button to enter the sub menu
e) Short press the No button several times until tABLE appears on the display, then press the Yes
button to enter the table setting options.
f) Short press the No button until ON on the screen.
g) Press the Yes button to confirm. And END appears on the display.
h) Press the Exit button to exit.
2. The Table option is enabled.
•In automatic totalization mode, the terminal will automatically totalize the current weight when it
performs totalization successfully.
•In manual totalization mode, you can press the Function button to totalize the current weight and
print it accordingly.
3. The output for current weight will appear as the example below.
Example:
4. When the totalization is finished, you can print the totalization result by below two steps.
1. Remove the load from the platform.
2. Press the Function button, and the totalization result appears on the display.
3. Press the Print button to print the result.
Refer to the example below, you will see the output of the totalization result.
Example:
NOTE: The terminal supports 32 characters, the first line is “-”. The colon is left aligned, and the
Weights/Numbers are right aligned.
NOTE: You cannot disable Totalization if you are in the mode currently.
3.5.3 Dynamic Weighing / Display Hold
This application is used to weigh an unstable load, such as a moving animal. Three different start/reset
operation types can be selected:
Off (OFF)
= Disable the mode.
Manual (mMAN)
= Averaging and resetting are initiated manually by pressing the FUNCTION key.
Semi-Automatic (SEmMI)
= Averaging is automatically initiated when the load weight is bigger than the start
weight; resetting is initiated by pressing the FUNCTION key.
Automatic (AUtO)
= Averaging is automatically initiated when the load weight is bigger than the start
weight; resetting is automatically initiated when the weight on the display is less
than 5d.
-------------------------
n: 5
Total: 100.000 g
Avg: 200.000 g
Min: 10.500 g
Max: 88.200 g
Diff: 78.300 g
1. 1000 g N
2. 2000 g N
3. 3000 g N
4. 1999 g N
5. 1000 g N
-------------------------

Defender 2500 EN-11
Display Hold
When the time is set to 0, the instrument will hold the displayed weight value on the display if that weight is
greater than start weight.
NOTE: The default start weight is 5% of initial capacity. The minimum start weight is 5 divisions. If the scale
does not operate, please check if the load is greater than start weight.
Starting the Dynamic Weighing/Display Hold Mode:
1. Long press the button Function Mode until dyNamM appears on the display.
2. Release the button Function Mode, and rEAdY appears on the display.
3. Put the load on the platform.
•If the operation type is manual, you must press the Function button to start the averaging process.
•If the operation type is semi-automatic/automatic, the terminal performs the averaging process
automatically when the load weight is bigger than the start weight.
NOTE:
•You can set the value of the start weight via this path: mM.E.N.U > mMOde > dyNamM > D.StArt. And the
correct range of the start weight value is 5d - capacity value.
•During the averaging period, the countdown timer decreases in one second increments. If the set
average time is 0s, the countdown timer is not displayed.
•The values on the display are averaged and held on the display when the countdown is completed.
4. Read the values on the display if the tilde (dynamic) symbol blinks on the display.
5. Reset the countdown timer:
•If the operation type is manual/semi-automatic, you can press the Function button to reset the
countdown timer when the countdown is running. The display shows rEAdY, and start to re-count.
•If the operation type is automatic, you can remove the load from the platform. And the average weight
will still be displayed until the duration time is over. Then the display shows rEAdY, and start to re-
count.
NOTE:
•The rEADY display must be at zero gross or net value to reset the countdown timer.
Application Settings
The Dynamic Weighing Configurations are defined below (Defaults in Bold).
NOTE: The Dynamic mode cannot be disabled if the scale is in the Dynamic mode currently.
Item
Available Settings
Comments
Dynamic Mode
（
dyNAmM
）Off (
OFF
) / on (
ON
)
Count down:
There is a countdown time.
Dynamic Operation
Type (
d.tyPE
)
Manul (
mMAN
)/
Semi-auto (
semMI
)/
Auto (
AUtO
)
Manual:
The averaging process is started and reset manually.
Semi-auto:
The averaging process is started automatically and reset
manually.
Auto:
The averaging process is started and reset automatically.
Start Weight
(
D.StArt
)
5d ~ Capacity Weight
Dynamic weighing will start when the load is bigger than the
start weight (for Semi-auto and Auto mode).
The default value is 5% of initial capacity.
Duration Time
(d.tImME)
1 ~ 10s
It is the time for the display to remain the dynamic weighing
result after the load is removed.
Average Time
(
A.tImME
)
0 ~ 30s
Time in Seconds.
Display Hold:If the average time is 0, the first stable weight
(more than or equal to 5d) will be the result.

EN-12 Defender 2500
3.5.4 Peak Hold
The Peak Hold application allows the user to collect and store the highest force value during the measurement.
Steps:
1. Press and hold the Mode button until PKHD appears on the display.
2. Press the Zero or Tare button to perform Zero or Tare if needed.
3. Short press the Function button to start, the digit will keep flashing during Peak Hold.
4. Put the object on the platform.
NOTE: Please make sure that the object’s weight is more than 5d.
5. Read the value from the display.
6. Press the Function button again to end Peak Hold.
NOTE: You cannot disable Peak Hold if you are in the mode currently.
3.5.5 Counting
This application is used to count the number of pieces on the pan based on an Average Piece Weight (APW).
Entering the Mode and Starting to Count
1. Press and hold the Mode button until COUNt is displayed.
2. Release the Mode button, the display shows CLr.PwW.
3. Set the AWP value:
•If you need to remove the stored Average Piece Weight (APW) of the last time, press the Yes button.
You can see PUt.10 appears on the display. To set the value, you can move on to step 3.
•If you need to reuse the stored APW, press the No button to start counting.
NOTE: If the display shows CLr.PAN, you can remove the weight on the platform or press the Tare
button to tare.
3. Press the No button several times until the desired value appears on the display.
NOTE:
•Available sample number selections are 5, 10, 20, 50 and 100 (The default is 10).
•If LFT is turned on, sample number selection 5 will not be available.
4. Put the specified quantity of pieces on the scale and press the Yes button. If the scale performs well, you
can see - - - - appears on the display. When the value on the display is stable, you can read the
value on the display.
5. Put the objects on the scale.
6. Read the value on the display. If the scale performs well, you can see the Pcs icon appears on the
display.
NOTE:
•You can press the Function button to check the APW value.
•Make sure that all pieces in the sample are the same. Different pieces and weights will result in an
inaccurate piece count.
•If the APW is between 0.1d and 1d, the display will show LO.rEF for 1.5 seconds. After that the scale will
start counting.
•If the APW is less than 0.1d, the display will show rEF.Err for 1.5 seconds. After that it will go back to
step 3, showing the sample size. Please replace with a heavier batch of samples and press the Yes button
to re-establish an APW value or change to a scale with readability suitable for your samples.
Application Settings
The application can be customized for user preferences. Please refer to the Application Settings section in
Weighing Mode for details about how to enter application settings.
The Counting Configurations are defined below (defaults in Bold).
Item
Available Settings
Comments
Count
（
COUNt
）
On, Off To enable Counting
NOTE: You cannot disable Counting if you are in the mode currently.

Defender 2500 EN-13
4. MENU SETTINGS
The User Menu allows the users to customize the terminal settings.
4.1 Menu Navigation
4.1.1 User Menu (In segments)
C.A.L
S.E.t.u.P
r.E.A.d
mM.O.d.E
U.N.I.t
r.s.2.3.2
P.r.i.n.t
U.S.B
P.r.i.n.t.U
L.o.c.k
E.n.d
ZErO
SpaN
LIN
GEO
C.test
ENd
reset
C.Unit
CAP
Grad
P.ZerO
P.UNIt
A.tare
ENd
reset
Stable
ZErO
FIltEr
AZt
B.LIGHt
SCreeN
A.Off
P.SaUer
ENd
reset
wWeIGH
COUNt
PkHd
tOtAL
tAble
dyNamM
d.typE
d.start
d.tI
mM
E
A.tImME
ENd
reset
g
kg
lb
oz
lb:oz
t
ENd
reset
BAud
PAritY
StOP
H.SHAKE
ALt.P
ALt.t
ALt.Z
ENd
reset
ASSIGN
DEmMAN
ON.StAb
ON.ACEP
INtEr
mMt.Con
OH.Con
SICS
Stable
CONtNt
LAYOUt
ENd
reset
type
HID
CDC
ALt.P
ALt.t
ALt.Z
ENd
reset
ASSIGN
DEmMAN
ON.StAb
ON.ACEP
INtEr
mMt.Con
OH.Con
SICS
Stable
CONtNt
LAYOUt
ENd
reset
L.ALL
L.OFF
L.ZErO
L.Print
L.Unit
L.mModE
L.mMeNU
L.tArE
ENd
NOTE:
1. The following menus will not appear until the corresponding accessories are installed.
The U.S.B will appear if you connect the terminal into a PC with the USB type-C. And you can select
the HID or CDC type.
The P.r.i.n.t.U will appear if you select CDC type.
NOTE: Refer to Section 6.1.1for the USB communication settings.
2. Some modes/units may not be available in all models.
When LEGAL FOR TRADE is turned ON (the security switch S1 is in the locked position), the menu
settings will be affected as below:
•Calibration function is disabled.
•Zero Range setting is locked at 2%.
•Stable Range setting is locked at 1d.
•Auto-Zero Tracking setting is locked at 0.5d.
•Filter and Units are locked at their current settings.
•Stable Only is locked at On.
•Lb:oz unit is only for postal use if it is available.
•Power saving mode is disabled.
•Peak Hold mode is disabled.
•Counting mode: Sample number selection 5 will not be available.
NOTE: Refer to 5.3 Sealing for the position of the security switch S1.

EN-14 Defender 2500
4.1.2 Button Navigation
For menu items which need to set numbers such as the scale capacity, the current
number is displayed with all digits flashing. To revise:
1. Press the No button to begin editing.
2. The first digit is displayed flashing.
3. Press the No button to increase the digit or press the
Yes button to accept the digit and move to the next
one.
NOTE: press the Back button can decrease the digit.
4. Repeat this process for all digits.
5. Press the Yes button when the last digit has been set.
6. The new setting is displayed with all digits flashing.
Press the Yes button to accept the setting or press the
No button to resume editing.
7. To end the current menu selection, press the Yes
button to advance to the next menu, or press the No
button to return to the top of the current menu.
4.2 Calibration Menu
The terminal can perform calibrations if you select the calibration menu C.A.L.
Changing the Calibration Unit
Steps:
1. Long press the Menu button until mM.E.N.U appears on the display.
2. Release the Menu button, and C.A.L appears on the display.
3. Short press the No button, and s.Et.u.p appears on the display.
4. Press the Yes button to enter the sub menu.
5. Short press the No button, and C.Unit appears on the display.
6. Short press the Yes button, and kg / Ib blinks on the display. If you want to change the unit, short press
the No button.
7. Short press the Yes button to confirm.

Defender 2500 EN-15
4.2.1 Initial Calibration
When the terminal is operated for the first time, a zero and span calibration are recommended to ensure
accurate weighing results.
Before performing the calibration, be sure to have the appropriate calibration weights as listed in table 4-1.
Ensure that the LFT switch/calibration lock is set to the unlocked position.
You can also adjust the GEO setting according to your location.For detailed GEO information, please check
the GEO Code Adjustment section below.
Table 4-1 Suggested Span Calibration Mass (Sold Separately)
Max Capacity (kg)
Mass* (kg)
Max Capacity (lb)
Mass* (lb)
15kg
15kg
30lb
30lb
60kg
60kg
100lb
100lb
150kg
150kg
150lb
150lb
300kg
300kg
250lb
250lb
1500kg
1500kg
2500lb
2500lb
3000kg
3000kg
5000lb
5000lb
NOTE: The calibration unit is consistent with the capacity unit.
4.2.2 Zero Calibration [ZErO]
The terminal performs zero calibration with one calibration point. The zero-calibration point is established with
no weight on the platform. You can use this calibration method to adjust for a different static load without
affecting the span or linearity calibration.
Calibration procedures:
1. Long press the Menu button until you see mM.E.N.U.
2. Release the button and wait for the display to show C.A.L. Press the Yes button.
3. The display shows ZErO.Press the Yes button.
4. 0kg and the calibration unit are flashing on the display. With no weight on the platform, press the Yes
button to establish the zero point.
5. The display shows --C--, and then -DonE- when the Zero calibration is finished. Then the display
shows SPAN.
NOTE: If zero calibration is failed or if after 40 seconds the calibration is still not successful, CAL E is
displayed for 3 seconds and the previous calibration data will be restored.
6. Press the Exit button to exit.
4.2.3 Span Calibration [SpaN]
The terminal performs span calibration with one calibration point. It is established with a calibration mass
placed on the platform.
NOTE: Span calibration should be performed after zero calibration.
Calibration procedures:
1. Long press the Menu button until you see mM.E.N.U.
2. Release the button and wait for the display to show C.A.L. Press the Yes button.
3. Short press the No button to navigate until you see SPAN.Press the Yes button.
4. The calibration point and the unit are flashing on the display based on the terminal capacity and unit set in
the menu. (e.g. 030.000 kg) If you do not need to change the calibration point, skip to step 6.
5. To change the calibration point, you can do the steps that follow.
a) Short press the No button several times until the desired number appears.
NOTE: press the Back button can decrease the digit.
b) Short press the Yes button to accept the number and move on to the next digit.
c) Repeat the process until all the digits are correct.
d) Press the Yes button to accept calibration point. It is flashing on the display.
6. Place a calibration mass of the specified weight on the platform and press the Yes button.
7. The display shows --C--, and then -DonE- when the calibration is finished.
8. Then the display shows LIN. Press the Exit button to exit.
NOTE: If the terminal does not perform the calibration successfully, CAL E is displayed for 3 seconds and the
previous calibration data is restored.

EN-16 Defender 2500
After waiting for 40 seconds, if the terminal still fails to perform the calibration, CAL E is displayed for 3
seconds, and the previous calibration data is restored.
4.2.4 Linearity Calibration [LIN]
The terminal performs linearity calibration with 3 calibration points. The full calibration point is established with
a weight on the platform. The mid calibration point is established with a weight equal to half of the full
calibration weight on the platform. The zero-calibration point is established with no weight on the platform. The
full calibration and mid calibration points can be altered by users during the calibration procedure.
Calibration procedures:
1. Long press the Menu button until you see mM.E.N.U.
2. Release the button and wait for the display to show C.A.L. Press the Yes button.
3. Short press the No button several times to navigate until you see LIN.Press the Yes button.
4. 0kg and the calibration unit are flashing on the display. With no weight on the platform, press the Yes
button to establish the zero point. The display shows --C--.
5. Then the first calibration point and the unit are flashing on the display based on the terminal capacity and
unit you set in the setup menu. (For example, 015.000 kg). If you do not need to change the calibration
point, skip to step 7.
6. Change the calibration point:
a) Short press the No button several times until the desired number appears.
NOTE: press the Back button can decrease the digit.
b) Short press the Yes button to accept the number and move on to the next digit.
c) Repeat the process until all the digits are correct.
d) Press the Yes button to accept calibration point. It is flashing on the display.
7. Place a calibration mass of the specified weight on the platform and press the Yes button. The display
shows --C--.
8. The second calibration point and the unit are flashing on the display based on the capacity and unit you
set in the setup menu. (For example, 030.000 kg)
NOTE: After waiting for 40s, if the terminal still fails to perform the calibration, CAL E is displayed for 3
seconds and the previous calibration data is restored.
9. Repeat step 6 and 7.
10. The display shows --C--, and then -DonE- when the Linearity calibration is finished.
11. After that the display shows GEO. Press the Exit button to exit.
4.2.5 GEO Code Adjustment [GEO]
Geographical Adjustment Factor (GEO) code is used to adjust the calibration based on the current location.
Settings from 0 to 31 are available with 12 being the default.
Refer to 8.3 Table of GEO Code Values to determine the GEO factor that corresponds to the terminal's
location.
Set the GEO factor:
1. Long press the Menu button until you see mM.E.N.U.
2. Release the button and wait for the display to show C.A.L. Press the Yes button.
3. Short press the No button several times to navigate until you see GEO.Press the Yes button.
4. The GEO point is flashing on the display (For example, 12).
5. Short press the No button several times until the desired GEO number appears. Press the Yes button to
accept. Then the display shows C.test.
NOTE: Press the Back button can decrease the digit.
6. Press the Exit button to exit.