OHAUS JR4KD User manual

Instruction Manual
PRECISION Standard
Electronic Balances
JR Series
Ohaus Corporation
29 Hanover Road
Florham Park NJ
07932-0900

2
NOTE:NOTE:
NOTE:NOTE:
NOTE: THIS EQUIPMENT HAS BEEN TESTED AND FOUND TO
COMPLY WITH THE LIMITS FOR A CLASS A DIGITAL DEVICE, PUR-
SUANT TO PART 15 OF THE FCC RULES.
THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PRO-
TECTION AGAINST HARMFUL INTERFERENCE WHEN THE
EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT.
THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO
FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN AC-
CORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE
HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS. OPER-
ATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY
TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER
WILL BE REQUIRED TO CORRECT THE INTERFERENCE AT HIS
OWN EXPENSE.
THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIM-
ITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS
SET OUT IN THE INTERFERENCE-CAUSING EQUIPMENT STAN-
DARD ENTITLED “DIGITAL APPARATUS”, ICES-003 OF THE
DEPARTMENT OF COMMUNICATIONS.
CET APPAREIL NUMERIQUE RESPECTE LES LIMITES DE BRUITS
RADIOELECTRIQUES APPLICABLES AUX APPAREILS NUMERIQUES
DE CLASSE A PRESCRITES DANS LA NORME SUR LE MATERIEL
BROUILLEUR : “APPAREILS NUMERIQUES”, NMB-003 EDICTEE PAR
LE MINISTRE DES COMMUNICATIONS.
Unauthorized changes or modifications to this equipment are not
permitted.

3
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
INTRODUCTION .................................................................................................. 5
DESCRIPTION ..................................................................................................... 5
UNPACKING ........................................................................................................ 6
INSTALLATION .................................................................................................... 7
Environment .................................................................................................. 7
Draft Shield ................................................................................................... 7
Pan and Pan Support .................................................................................... 8
AC Adapter.................................................................................................... 8
OPERATION ........................................................................................................ 9
Turning the Balance ON................................................................................ 9
Stabilization ................................................................................................... 9
Auto Range Models....................................................................................... 9
Checking Calibration ................................................................................... 10
Weighing .................................................................................................... 10
Taring .......................................................................................................... 11
USING MENUS TO CONFIGURE THE BALANCE ........................................... 12
CALIBRATION MENU ........................................................................................ 13
Calibration Menu Protection ........................................................................ 13
Calibration Weights ..................................................................................... 13
Span Calibration.......................................................................................... 14
Linearity Calibration .................................................................................... 15
End .............................................................................................................. 16
USER MENU ...................................................................................................... 17
User Menu Protection ................................................................................. 17
Reset to Factory Defaults............................................................................ 18
Averaging Level .......................................................................................... 19
Stability Range ............................................................................................ 20
Auto-Zero .................................................................................................... 20
End .............................................................................................................. 21

4
SETUP MENU .................................................................................................... 22
Setup Menu Protection................................................................................ 22
Unit Selection .............................................................................................. 23
Lock Switch ................................................................................................. 24
End .............................................................................................................. 25
MENU LOCK-OUT PROTECTION..................................................................... 25
CARE AND MAINTENANCE.............................................................................. 26
TROUBLESHOOTING ....................................................................................... 26
Error Codes................................................................................................. 27
SERVICE INFORMATION ................................................................................. 28
SPECIFICATIONS ............................................................................................. 29
PARTS INFORMATION ..................................................................................... 30
REPLACEMENT PARTS ................................................................................... 30
ACCESSORIES ................................................................................................. 30
LIMITED WARRANTY........................................................................................ 31

5
PRECISION
Standard Balance
INTRODUCTION
Thismanualcoversinstallation,operationandtroubleshootingfortheOhausPrecision
Standard balances, Models JR120, JR200, JR400, JR400D, JR600, JR2K, JR4K and
JR4KD. Toinsureproperoperationofthebalance,pleasereadthismanualcompletely.
DESCRIPTIONDESCRIPTION
DESCRIPTIONDESCRIPTION
DESCRIPTION
The Ohaus Precision Standard series balances are precision weighing instruments,
designed to provide years of service with virtually no maintenance. The Precision
Standard series is constructed using a die-cast aluminum base finished with a durable
epoxy powder paint which is resistant to commonly used acids, contains a one piece
solid-stateprecisionelectronicsPCboard,asevendigitLCDdisplaywhichis0.6inches
in height. All Precision Standard series balances are factory set to measure in grams.
Eachbalanceoperatesthroughaseriesofmenuswhichenableprecise calibrationand
linearity along with various other parameters which enhances operation. A built in lock
switch prevents preset settings from being changed. To prevent measurements from
being affected by air currents, a draft shield is used on Models JR120, JR200 and
JR400D balances. Power is supplied through an AC adapter which is available in five
voltages for world-wide usage. Accessories include: an RS232 interface kit which
allows printing of results through an external computer, an RS232 Interface cable with
a print switch, weigh below hook, security device and calibration weights.

6
UNPACKINGUNPACKING
UNPACKINGUNPACKING
UNPACKING
Your Precision Standard balance was shipped with the following items:
•a pan
•a pan support
•an AC power adapter
•a draft shield (JR120, JR200 and JR400D only)
includes draft shield and snap clamp
•this instruction manual
•your warranty card
Itisrecommendedtosavethecartonandpackingmaterialforstoring,transportingthe
balance or returning it for service.
Round Pan Square Pan
Pan SupportAC Adapter Pan Support
Precision Standard
Balance
(Square pan and support for
Models JR2K, JR4K and
JR4KD)
(Round pan and support
for Models JR120,
JR200, JR400, JR600,
and JR400D)

7
INSTALLATIONINSTALLATION
INSTALLATIONINSTALLATION
INSTALLATION
EnvironmentEnvironment
EnvironmentEnvironment
Environment
Thebalanceshouldalwaysbeusedinanenvironmentwhichisfreefromexcessiveair
currents, corrosives, vibration, and temperature or humidity extremes. These factors
will affect displayed weight readings.
DO NOT install the balance:
•Next to open windows or doors causing drafts or rapid temperature changes.
•Near air conditioning or heat vents.
•Near vibrating, rotating or reciprocating equipment.
•Near magnetic fields or equipment that generates magnetic fields.
•On an unlevel work surface.
Draft Shield (JR120, JR200 and JR400D)Draft Shield (JR120, JR200 and JR400D)
Draft Shield (JR120, JR200 and JR400D)Draft Shield (JR120, JR200 and JR400D)
Draft Shield (JR120, JR200 and JR400D)
To install the draft shield:
1. Position the draft shield on top of
the balance as shown.
Make sure the rib at the
front of the draft shield
base butts up against the
raised lip of the display
panel.
2. The snap clamp should be ori-
ented so that the double clip
is toward the front of the
balance.
Insert the double clip of the
snap clamp into the opening
in the draft shield base, and clip
the draft shield base to the balance.
Press the rear clip of the snap clamp
into place.
Position rib up against
display panel.

8
Pan and Pan SupportPan and Pan Support
Pan and Pan SupportPan and Pan Support
Pan and Pan Support
Square PanSquare Pan
Square PanSquare Pan
Square Pan
Insert the pan support into the hole in the
weighing mechanism as shown in the il-
lustration. Make sure the hole in the pan
support faces the rear of the balance.
Onceinstalled,thepansupportshouldnot
rotate.
The pan has a guide pin which protrudes
from the bottom. Place the pan on the
support making sure the guide pin is in-
serted in the hole in the pan support.
AC AdapterAC Adapter
AC AdapterAC Adapter
AC Adapter
Plug the molded connector of the adapter
into the receptacle at the rear of the bal-
ance. Plug the adapter into a convenient
AC outlet. When power is applied to the
balance, it will begin a self test cycle.
During this time, the display will count
downfrom10anddisplaythewordCHEC.
PAN
SUPPORT
Round PanRound Pan
Round PanRound Pan
Round Pan
Insert the pan support into the hole in the
weighing mechanism.
Place the pan on the support.
SUPPORT
PAN
AC ADAPTER
RECEPTACLE

9
OPERATIONOPERATION
OPERATIONOPERATION
OPERATION
Turning the Balance ONTurning the Balance ON
Turning the Balance ONTurning the Balance ON
Turning the Balance ON
With no load on the pan, turn the balance
ON by pressing the ON TARE button.
When first switched ON, all segments of
the display should be on as shown in the
illustration.
Thisdisplaycheckwillbedisplayedbriefly,
then the model number of the balance,
followed by a short countdown. The dis-
play will momentarily blank and then indi-
catezero. Allofthe displaysshownatthe
right only appear during initial power-up.
Auto Range ModelsAuto Range Models
Auto Range ModelsAuto Range Models
Auto Range Models
(JR400D and JR4KD)(JR400D and JR4KD)
(JR400D and JR4KD)(JR400D and JR4KD)
(JR400D and JR4KD)
Auto range balances offer both a fine
range (lower capacity/higher readability)
andacoarserange(highercapacity/lower
readability). When first turned on, the bal-
ance is in the fine range. It remains in this
rangeuntiltheweight on thepanexceeds
the fine range capacity. When weight on
the pan is greater than the fine range
capacity, the balance switches to the
coarse range.
Ifweightonthepanfallsbacktowithinthe
fine range capacity, coarse range read-
ability remains in effect until you tare the
balance with no weight on the pan.
StabilizationStabilization
StabilizationStabilization
Stabilization
Before initally using the balance, allow
time for it to adjust to changes in environ-
ment. The balance need only be plugged
in to warm up. Recommended warm up
period is thirty minutes.
•
•
•

10
WeighingWeighing
WeighingWeighing
Weighing
1. Press to rezero the display.
2. Place the object(s) or material to be
weighed on the pan.
3. Wait for the stability indicator to ap-
pear before reading the weight.
STABILITY
INDICATOR
Checking CalibrationChecking Calibration
Checking CalibrationChecking Calibration
Checking Calibration
Before using the balance, calibration
shouldbechecked.Thebalancehasbeen
calibrated before shipment, however, it
could be influenced by factors such as:
•Variations in the earths gravitational
field at different latitudes of the world.
•Rough handling.
•Changes in work location.
•Height above sea level.
To check the balance’s calibration, place
aknownmassonthecenterofthepanand
read the displayed weight.
If the displayed weight differs from the
known weight by more than acceptable
limits, refer to the Calibration Menu and
theSpecificationsattherearofthemanual.
ONON
ONON
ON
TARETARE
TARETARE
TARE

11
TaringTaring
TaringTaring
Taring
When weighing material or objects that
mustbeheldinacontainer,taringenables
you to store the container weight in the
balance’s memory, separate from the
weight of the material in the container.
1. Placeanemptycontaineronthepan.
Its weight will be displayed.
2. Press .
The display will show zero and the
container’s weight will be stored in
memory.
3. Addmaterialtothecontainer.As ma-
terial is added, its net weight will be
displayed.
4. Removingthecontainerandmaterial
fromthepanwillcausethebalanceto
display the container’s weight as a
negative number.
Taredweightremainsinbalancememory
until is pressed again.
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE

12
To access a menu, press and hold until desired menu appears, then release it.
Original factory default settings are shown in boldface type.
Use these buttons to step through menus and select submenus:
next select
selection displayed item
ONON
ONON
ON
TARETARE
TARETARE
TARE
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE ONON
ONON
ON
TARETARE
TARETARE
TARE
CAL
SPAN
LIN
END
PRINT
USING MENUS TO CONFIGURE THE BALANCEUSING MENUS TO CONFIGURE THE BALANCE
USING MENUS TO CONFIGURE THE BALANCEUSING MENUS TO CONFIGURE THE BALANCE
USING MENUS TO CONFIGURE THE BALANCE
PrecisionStandardbalancescontainfourdisplaymenuswhichenableyoutocalibrate
and configure the balance for your specific operating requirements.
Calibration Menu:Calibration Menu:
Calibration Menu:Calibration Menu:
Calibration Menu: Used to calibrate the balance for span or linearity.
User MenuUser Menu
User MenuUser Menu
User Menu: Used to adapt balance to environmental condtions.
Setup Menu:Setup Menu:
Setup Menu:Setup Menu:
Setup Menu: Used to enable, disable or customize different balance features.
Print Menu:Print Menu:
Print Menu:Print Menu:
Print Menu: Used to configure the RS232 interface.
SEL
g,dwt,ct,oz,ozt,GN,
taels 1,2,3, mommes,
lb, lb:oz
Sr
LOCSW
Calibration
User
Setup
Print
End
END
NOTE:
PRINT menu appears only
when RS232 option is in-
stalled.
USER
RESET
AL
0, 11
11
1, 2, 3
STB
.5d, 1d1d
1d1d
1d, 2d, 5d
AUTO- 0
OFF, .5d.5d
.5d.5d
.5d, 1d,3d
END
SETUP

13
CALIBRATION WEIGHTSCALIBRATION WEIGHTS
CALIBRATION WEIGHTSCALIBRATION WEIGHTS
CALIBRATION WEIGHTS
LINEARITYLINEARITY
LINEARITYLINEARITY
LINEARITY SPAN ONLYSPAN ONLY
SPAN ONLYSPAN ONLY
SPAN ONLY
MODELMODEL
MODELMODEL
MODEL WEIGHTSWEIGHTS
WEIGHTSWEIGHTS
WEIGHTS WEIGHTWEIGHT
WEIGHTWEIGHT
WEIGHT
JR120 50g, 100g 100g
JR200 100g, 200g 200g
JR400 200g, 400g 400g
JR400D 50g, 400g 400g
JR600 200g, 500g 500g
JR4K 2kg, 4kg 4kg
JR2K 1kg, 2kg 2kg
JR4KD 500g, 4kg 4kg
It is recommended that masses must
meet or exceed ASTM Class 1 Toler-
ance.Calibrationmasses areavailable
as accessories.
CALIBRATION MENUCALIBRATION MENU
CALIBRATION MENUCALIBRATION MENU
CALIBRATION MENU
Precision Standard balances can be calibrated in two ways: Span calibration or
Linearity calibration. Span calibration resets the balance’s weighing range using two
weight values: zero and a weight value at or near the balance’s capacity. Linearity
calibration minimizes deviation between actual and displayed weights within the
balance’s weighing range. Three weight values are used: zero, a weight value within
the balances weighing range, and a weight value at or near the balance’s specified
capacity. The following table shows the sequence in which submenus appear on the
Calibration menu.
Calibration WeightsCalibration Weights
Calibration WeightsCalibration Weights
Calibration Weights
Before beginning calibration, make sure
weightsareonhand. Ifyou begin calibra-
tion and realize weights are not available,
either turn the balance off, or go through
the procedure without weights. The bal-
ancewilluse previouslystoredcalibration
data. Calibration should be performed as
necessary to ensure accurate weighing.
Weights required to perform the proce-
dures are listed in the adjacent table.
Calibration Menu ProtectionCalibration Menu Protection
Calibration Menu ProtectionCalibration Menu Protection
Calibration Menu Protection
Thecalibrationmenumaybelockedoutto
prevent unauthorized personnel from
changing calibration. To lock out the cali-
bration menu, refer to section titled Menu
Lock-Out Protection.
NOTENOTE
NOTENOTE
NOTE: If calibration has been locked out,
you will not be able to access it.
CALIBRATION MENU TABLECALIBRATION MENU TABLE
CALIBRATION MENU TABLECALIBRATION MENU TABLE
CALIBRATION MENU TABLE
Selects span calibration.
Selects linearity calibration.
Used to exit the Calibration menu.

14
Span CalibrationSpan Calibration
Span CalibrationSpan Calibration
Span Calibration
1. Press and hold until CAL is
displayed, then release it. Balance
will display SPAN.
2. Press .
3. When isreleased, C 0gwillbe
displayed indicating that no weight
should be on the pan.
4. Press . The display will show
-C-followedbythevalueoftheweight
which must be placed on the pan.
NOTE:NOTE:
NOTE:NOTE:
NOTE: Do not disturb the balance when
-C- is displayed. Disturbances will
result in improper calibration.
5. Place the required weight on the pan
and press . The display will
show -C- while the balance recali-
brates.
6. When the weight on the pan is dis-
played along with the current unit
indicator,thebalanceisrecalibrated.
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE

15
Linearity CalibrationLinearity Calibration
Linearity CalibrationLinearity Calibration
Linearity Calibration
1. Turn Balance on. After zero reading,
press and hold until CAL is
displayed,thenrelease. Balance will
display SPAN.
2. Press andthedisplaywillshow
LIN.
3. Press tostarttheLinearityCali-
bration Procedure. When the
is released, C 0g will be displayed,
indicating that no weight should be in
the pan.
4. Press . The display will show
-C-followedbythevalueoftheweight
which must be placed on the pan.
5. Placetherequiredweightonthepan.
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE

16
EndEnd
EndEnd
End
If you have entered the Calibration menu
and do not wish to calibrate the balance,
use END to return to normal weighing
operations.
Repeately press until End is dis-
played.
Press , when released, the balance
will returned to normal weighing opera-
tions.
6. Press . The display will show
-C- momentarily, then C followed by
the next weight to be placed on the
pan.Donotdisturbthebalancewhen
-C- is displayed. Disturbances will
result in improper calibration.
7. Placetherequiredweightonthepan,
then press . The display will
show -C- while the balance recali-
brates.Whentheweightonthepanis
displayed along with the current indi-
cator, the balance is recalibrated.
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE

17
USER MENUUSER MENU
USER MENUUSER MENU
USER MENU
The User menu is used to adapt the balance to environmental conditions. It contains
submenuswhichenableyoutoresetthebalancetofactorydefaultsettingsortoselect
specific range settings. Access to the User menu can be disabled using the Lock Out
switch. The following table shows the sequence in which submenus appear on the
User menu.
USER MENU TABLEUSER MENU TABLE
USER MENU TABLEUSER MENU TABLE
USER MENU TABLE
Sets all submenus below to original
factory default settings. Reset does not
appear if menu has been locked out.
Specifies the averaging level.
Specifies the desired stability range.
Sets Auto-Zero threshold.
Used to exit the Setup menu and store
your selections.
User Menu ProtectionUser Menu Protection
User Menu ProtectionUser Menu Protection
User Menu Protection
The User menu may be locked out to
prevent unauthorized personnel from
changing the settings. To lock out the
Usermenu,refertothesectiontitledMenu
Lock-Out Protection.
NOTENOTE
NOTENOTE
NOTE: If -SAFE- is displayed, the User
menu has been locked out. Settings may
beviewedbutnotchanged.SeetheMenu
Lock-Out Protection section to enable it
for making changes.
ToaccesstheUser menu, pressandhold
until USER is displayed, then re-
lease it.
ONON
ONON
ON
TARETARE
TARETARE
TARE

18
Reset to Factory DefaultsReset to Factory Defaults
Reset to Factory DefaultsReset to Factory Defaults
Reset to Factory Defaults
This submenu enables you to reset all
User menu selections to the factory de-
faultsettingsoutlinedintheadjacenttable.
To reset to factory defaults:
1. Access the RESET submenu.
2. Press to change the setting.
Select YES to reset settings or,
no to leave current settings.
Press to accept the displayed
setting.
To access a submenu:
1. Repeatedly press until the de-
sired submenu is displayed.
2. Press to select the displayed
submenu.
NOTENOTE
NOTENOTE
NOTE: You must use END to store any
changes you make to the User menu.
Thefollowingsectionsdescribeeachitem
on the User menu in detail.
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE
ONON
ONON
ON
TARETARE
TARETARE
TARE
USER MENUUSER MENU
USER MENUUSER MENU
USER MENU
FACTORY DEFAULTSFACTORY DEFAULTS
FACTORY DEFAULTSFACTORY DEFAULTS
FACTORY DEFAULTS
Averaging Level AL 1
Stability Range 1d
Auto-Zero Tracking .5d
ONON
ONON
ON
TARETARE
TARETARE
TARE
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE

19
Averaging LevelAveraging Level
Averaging LevelAveraging Level
Averaging Level
Averaging level compensates for vibra-
tion or excessive air currents. During op-
eration, the balance continually takes
weight readings from the weighing cell.
Successivereadingsarethendigitallypro-
cessed to achieve a stabilized display.
Use this submenu to specify how much
processing you need to obtain stable re-
sults.
NOTE: Averaging level does not affect
balance accuracy.
Select one of four averaging levels using
the adjacent table as a guide.
To view or change the averaging level:
1. Access the AL submenu to display
the current setting.
2. Press to change the setting.
Press to accept the displayed
setting.
When is released, AL will be dis-
played again and the Setup menu will be
returned.
AVERAGING LEVELAVERAGING LEVEL
AVERAGING LEVELAVERAGING LEVEL
AVERAGING LEVEL
AL 0 reduced stability, fastest
stabilization time
ALAL
ALAL
AL 1 normal stability, normal1 normal stability, normal
1 normal stability, normal1 normal stability, normal
1 normal stability, normal
stabilization timestabilization time
stabilization timestabilization time
stabilization time
AL 2 more stability, slow stabi-
lization time
AL 3 maximum stability, slow-
est stabilization time
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE

20
returned.
Stability RangeStability Range
Stability RangeStability Range
Stability Range
The stability range specifies how much a
displayed weight may change while the
stability indicator remains ON. When dis-
played weight changes beyond the allow-
able range, the stability indicator turns
OFFindicatinganunstablecondition.Pre-
cision Standard balances permit you to
select one of four stability ranges (in divi-
sions) as shown in the table.
WhentheRS232interfaceisconfiguredto
print stable data only, the stability range
also governs data output. Displayed data
willonlybeoutputifitiswithintheselected
stability range.
To view or change the stability range:
1. Access the Stb submenu to display
the current setting.
2. Press to change the setting.
Press to accept the displayed
setting.
When is released, Stb will be dis-
played again and the Setup menu will be
STABILITY RANGESTABILITY RANGE
STABILITY RANGESTABILITY RANGE
STABILITY RANGE
..
..
.5d smallest range: stability indi-
cator is ON only when dis-
playedweightiswithin.5divi-
sions
1d1d
1d1d
1d reduced rangereduced range
reduced rangereduced range
reduced range
2d normal range
5d largest range: stability indi-
cator is ON even though dis-
played weight changes
slightly
Auto-ZeroAuto-Zero
Auto-ZeroAuto-Zero
Auto-Zero
Auto-Zero minimizes the effects of tem-
perature changes and shift on the zero
reading. By defining a threshold level in
divisions, the balance maintains the zero
display until the threshold is exceeded.
Thissubmenupermitsyoutoselectoneof
three threshold levels, or turn the feature
OFF. Auto-Zero only functions when the
display reads zero.
OFFOFF
OFFOFF
OFF
MODEMODE
MODEMODE
MODE
ONON
ONON
ON
TARETARE
TARETARE
TARE
ONON
ONON
ON
TARETARE
TARETARE
TARE