To evaluate whether batteries have deteriorated, measure the
internal resistance of a fresh battery. Deteriorated batteries will have
about 1.5 to 2 times (values for reference purposes) as high internal
resistance as a fresh one. Use these values as guidelines when
determining deterioration evaluation values.
Example: Changes in the internal resistance and voltage
associated with battery deterioration
Internal resistance: 0.5 m
Voltage: 2.0 V
(Example values)
The measurement recording prompt uses voice prompts and the
display to inform you of the battery number you are to measure
next. You can get your jobs done neatly, which will no longer require
you to start all over again.
Thank you very much for choosing the Hioki BT3554-50, BT355451, BT3554-52 Battery Tester. To ensure your ability to get the most
out of this instrument over the long term, please read this manual
carefully and keep it available for future reference.
Model
number
(Order code)
BT3554-50
BT3554-519465-10 Pin Type Lead
BT3554-52L2020 Pin Type Lead
Hereafter, the model number is referred to as the one that appears
on the product, BT3554-50.
Model name printed on
the instrument
BT3554-50
Standard accessory lead
None
Latest edition of instruction manual
The contents of this manual are subject to change,
for example as a result of product improvements or
changes to specications.
The latest edition can be downloaded from Hioki’s
website.
• Android, Google Play, and Google Chrome are trademarks of Google, Inc.
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the United States and certain other countries.
• Windows and Microsoft Excel are either registered trademarks or
trademarks of Microsoft Corporation in the United States and other
countries.
• The Bluetooth
Bluetooth SIG, Inc. and any use of such marks by Hioki E.E. Corporation
is under license. Other trademarks and trade names are those of their
respective owners.
• Other products and company names are trade names, registered
trademarks, or trademarks of their respective owners.
®
word mark and logos are registered trademarks owned by
When you open the package, carefully inspect the instrument to
ensure that everything is in good condition, and that no damage
occurred during shipping. In particular, check the accessories, panel
switches, and connectors. If the instrument seems to have been
damaged or does not work as specied, contact your authorized
This pin type lead has parallel
arranged pins. The pins possess
high-strength wear-resistant.
This lead, having the pins that
can be inserted into a hole 5 mm
in diameter, lets you perform
measurement without removing
terminal covers. You can also
perform measurement in virtually
any location because the pins can
be inserted diagonally in hard-toreach places.
Model 9772-90 Tip Pin
The 9772-90 is a replacement tip
pin for the 9772 Pin Type Lead.
Model 9460 Clip Type Lead with
Temperature Sensor
Using the 9460 lets you measure
resistance, voltage, and
temperature simultaneously.
The 9467 can clip on thick rodlike
terminals of measurement targets.
You can perform four-terminal
measurement just by clipping the
lead on to the target.
Approx. φ29 mm
Model 9451 Temperature Probe
(Cable length: 1.5 m)
Connect the 9451 to the TEMP.
SENSOR terminal on the top face
of the instrument.
Order code: 9451-01
(Cable length: 0.1 m)
Connect the 9451S to the TEMP.
SENSOR terminal on the top face
of the instrument.
Model Z5038 0 Adj Board
(For the 9465-10, L2020, and
9772)
Hook-and-loop fasteners are
separately necessary to stick the
Z5038 to the carrying case. Please
use commercially available hookand-loop fasteners.
This instrument is designed to conform to IEC 61010 Safety
Standards, and has been thoroughly tested for safety prior to
shipment. However, using the instrument in a way not described in
this manual may negate the provided safety features.
Carefully read the following safety notes before using the
instrument.
DANGER
Mishandling the instrument could result in bodily
injury or even death, as well as damage to the
instrument. Familiarize yourself with the instructions
and precautions in this manual before use.
WARNING
Electricity can potentially cause serious events such
as an electric shock, heat generation, re, and an arc
ash due to a short-circuit. If you have not used any
electrical measuring instruments before, you should
be supervised by a technician who has experience in
electrical measurement.
Protective gear
WARNING
Performing measurement using this instrument
involves live-line work. To prevent an electric shock,
use appropriate protective insulation and adhere to
applicable laws and regulations.
Indicates the presence of a potential hazard. When the symbol
is printed on the instrument, refer to a corresponding topic in the
Instruction Manual.
Indicates a fuse.
Indicates a grounding terminal.
Indicates DC (Direct Current).
Indicates the power button that switches the instrument between
on and o states.
Symbols for various standards
Indicates that the product is subject to the Waste Electrical and
Electronic Equipment (WEEE) Directive in EU member nations.
Dispose of the product in accordance with local regulations.
Indicates that the product complies with standards imposed by
EU directives.
Character expression
The instrument’s display expresses the alphanumeric characters as
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 0
Some dierent expressions are used as below:
Indicates that the saved data has been deleted.
Indicates that the comparator buzzer is set to
FAIL.
Indicates that the A/D converter communications
error occurs.
Accuracy labeling
The instrument accuracy is expressed by dening a percentage of
the reading and a limit value for errors in terms of digits.
readingDisplay value
Indicates the value displayed by the instrument. Limit values
for reading errors are expressed as a percentage of the
reading (“% of reading”).
digitsResolution
Indicates the minimum display unit (in other words, the
smallest digit that can have a value of 1) for a digital
measuring instrument. Limit values for digit errors are
expressed using digits.
Observe the following precautionary information to ensure that the
instrument can be used safely and in a manner that allows it to
perform as described in its specications.
Use of the instrument should conrm not only to its specications,
but also to the specications of all accessories, options, LR6
Alkaline batteries, and other equipment in use.
Installing the instrument
CAUTION
Installing the instrument in inappropriate locations could
cause a malfunction of the instrument or an accident.
• Exposed to direct sunlight or high temperature
• Exposed to corrosive or combustible gases
• Exposed to a strong electromagnetic elds or
electrostatic charges
• Near induction heating systems (such as high-frequency
induction heating systems and IH cooking equipment)
• Susceptible to vibration
• Exposed to water, oil, chemicals, or solvents
• Exposed to high humidity or condensation
• Exposed to high concentrations of dust particles
Do not place the instrument on an unstable or uneven
surface. Doing so could cause the instrument to fall or turn
over, causing bodily injury or damage to the instrument.
To prevent an electric shock, do not remove the
instrument’s case. The internal components of the
instrument carry high voltages and may become very
hot during operation.
To avoid damage to the instrument, do not subject it to
vibration or mechanical shock during transportation and
handling. Exercise particular care to avoid subjecting the
instrument to mechanical shock, for example by dropping.
• Wear gloves of rubber or similar material during
measurement.
• Ventilate the rooms where batteries have been
installed before measuring batteries to prevent
explosions. Sparks may occur when a test lead is
connected to a battery to be measured, which can
ignite any accumulated inammable gases such as
hydrogen.
After measuring a high-voltage battery, rst short-circuit
the test lead to discharges the DC elimination capacitor
connected across the lead before continuing to measure a
low-voltage battery. Otherwise the low-voltage battery may
be subject to an excess voltage, causing damage to the
battery.
To avoid damage to the instrument, do not apply voltage
to the EXT.HOLD and TEMP.SENSOR terminal.
• Do not place the test lead in contact with the measurement
terminals of a leaky battery. Doing so may cause a degradation
in the instrument functionality due to exposure to electrolyte
from the leaky battery.
• Subjecting the test lead to an excessive common-mode voltage
could cause the following issues:
(1) Unstable measured values
(2) Wire-break detection display ([−−−−])
Attaching ferrite cores around the test lead or placing the
instrument some distance away from the oor may have a
lightening the eect.
• To avoid an electric shock, disconnect the test lead
from the object under measurement before open the
cover to replace the LR6 Alkaline batteries or fuse.
• To prevent instrument damage or an electric shock,
use only the screw for securing the fuse cover in
place that is originally installed. If you have lost the
screw or nd that the screw is damaged, please
contact your Hioki distributor for a replacement.
• Use a fuse only specied by Hioki.
Failure to observe this could damage the
instrument, resulting in bodily injury.
Specied fuse: Model Z5050 Fuse Set (216.630,
Littelfuse Inc., fast-acting, rating: 250 V / F 630 mA,
interrupting rating: 1500 A)
• Do not short-circuit, recharge, or disassemble
LR6 Alkaline batteries, or dispose of them in re.
Batteries may explode if mistreated.
• Do not use the instrument with the fuse holder
short-circuited.
Failure to observe this could damage the
instrument, resulting in bodily injury.
Poor performance or damage from LR6 Alkaline battery
leakage could result. Observe the cautions listed below:
• Do not mix old and new LR6 Alkaline batteries, or
dierent types of LR6 Alkaline batteries.
• Be careful to observe the battery polarity during
installation.
• Do not use LR6 Alkaline batteries after their
recommended expiry date.
• Do not allow weak LR6 Alkaline batteries to remain in
the instrument.
• Replace LR6 Alkaline batteries only with ones of the
specied type.
• Remove the LR6 Alkaline batteries from the instrument
if they are to be stored for a long time.
Handle and dispose of LR6 Alkaline batteries in accordance with
local regulations.
Precautions related to use of the CD
• Exercise care to keep the recorded side of the disc free of dirt
and scratches. When writing text on the disc’s label, use a pen or
marker with a soft tip.
• Keep the disc inside a protective case and do not expose to direct
sunlight, high temperature, or high humidity.
• Hioki is not liable for any issues your computer system
experiences in the course of using this disc.
To evaluate whether batteries have deteriorated, rst measure the
internal resistance of a fresh or non-defective battery.
If a battery has deteriorated, the internal resistance will increase
by 50 to 100 percent (value for reference purposes) from its initial
value.
The graph below shows the relation between the amount of battery
charge available and the initial value of internal resistance in a leadacid battery. “CS,” “HS,” and “MSE” denote lead-acid battery types
according to Japanese Industrial Standard (JIS).
The internal resistance of an MSE (sealed stationary lead-acid
battery) can be graphically read at approximately 1 m
and approximately 0.13 mΩ (1000 Ah).
• For an MSE (sealed stationary lead-acid battery), the warning
threshold (WARNING) of the internal resistance is dened as
about 1.5 times its initial value. The rejection value (FAIL) varies
depending on the manufacturer.
• Initial values of internal resistance may vary among batteries
under measurement with the same capacity, depending on the
model or manufacturer. Use the graph on the previous page for
reference purposes.
• Warning thresholds (WARNING) and rejection values (FAIL) of
internal resistance vary depending on the manufacturer.
Source: Battery technician certication textbook, Battery Association
of Japan (BAJ)
The battery measurement values can be compared
with the present threshold values using the comparator
function to determine the scope in which the values fall
within: PASS, WARNING, or FAIL.
See “4 Comparator Function (Evaluation Based on
Threshold Values)” (p. 69).
Changes in the internal resistance of open (liquid) stationary
lead-acid batteries, including CS and HS, and alkaline lead-acid
batteries, may be smaller than sealed lead-acid batteries. Thus, it is
sometimes dicult to determine whether such batteries have been
The instrument measures internal resistance and voltage of
batteries using AC having a frequency of 1 kHz. The internal
resistance of lithium-ion batteries can also be measured; however,
that of a packed battery will include the protective resistance, which
is installed in packed batteries. Besides, the instrument may not be
able to diagnose and evaluate the deterioration of such batteries
because changes in the internal resistance of lithium-ion batteries
due to deterioration may be smaller than lead-acid batteries.
The instrument measures internal resistance, voltage, and terminal
temperature of lead-acid, nickel-cadmium, nickel-hydrogen, and
other types of batteries, enabling you to determine if batteries have
deteriorated.
To measure terminal temperature, the 9460 Clip Type Lead with Temperature
Sensor (option) is required. To measure an ambient temperature, the
9451/9451S Temperature Probe (option) is required.
After measurement, connecting the instrument to your computer
with the accompanying USB cable enables measured data
transfer to the computer. Also, you can browse through and record
measured data on your smart phone or tablet using the wireless
communications function.
The instrument can save up to 6000 data sets consisting of
presently measured data (resistance, voltage, temperature,
comparison result). This equates to up to 12 units, each of which
consisting of 500 cell cubicles.
The instrument can be populated 100 sets of prole information
(comments, such as location information and device information,
and the buttery number information).
Saving measured data in connection with prole information
makes it possible for you to manage measurement locations,
UPSs, and batteries easily.
Measurement recording prompt
The instrument and your mobile device with GENNECT Cross
installed, using the display and voice prompts, respectively, can
inform you of comparison results and the battery number you
are to measure next. This enables you to record measured data
quickly.
Automatic hold function and automatic memory
function
When these functions are enabled, the instrument can
automatically, at the instance when the display freezes measured
values, save the measured values in its internal memory. This
can lead to increased operational eciency.
Measurement without the need for UPS system
shutdown
The instrument uses high-precision AC low-resistance
measurement technology and noise reduction technology. Time
required for measurement will be reduced since the instrument is
capable of measuring live wires without requiring a UPS system
shutdown.
Reliable measured values
The instrument is capable of obtaining reliable measured values
without being aected by wire resistance of the test lead or
contact resistance because it uses the AC four-terminal method
to measure internal resistance.
Simultaneous display of resistance, voltage, and
temperature
Without switching functions, the instrument can display
battery internal resistance, voltage, and terminal temperature
simultaneously. To measure terminal temperature, the 9460 Clip
Type Lead with Temperature Sensor (option) is required. To
measure an ambient temperature, the 9451/9451S Temperature
Probe (option) is required.
Comparator function
The comparator function enables you to set threshold values
for internal resistance and voltage. This can evaluate whether
batteries have deteriorated more easily.
Computer interface
Measured data can be transferred to your computer.
Wireless communications function
Connecting the Z3210 Wireless Adapter (option) enables you
to browse through and record measured values with your smart
phone and tablet.
You can utilize the measurement recording prompt in sync with
your mobile device with GENNECT Cross installed.
Installing the Z3210 Wireless Adapter (option) in the instrument lets
you use the wireless communications function.
See “7.2 Communicating With a Mobile Device” (p. 108).
WARNING
Turn o the instrument and remove the test lead.
Failure to do so could cause an electric shock.
CAUTION
Before handling the Z3210, eliminate static electricity
from your body by touching any metallic part, such as
a doorknob.
Failure to do so could cause static electricity to damage
the Z3210.
Turn o the instrument and
1
remove the test lead.
Remove the Z5041 Protector
2
while pressing down it as
shown.
Remove the protective cap with
3
a athead screw driver.
Insert the Z3210, observing the
4
correct orientation, as far as it
will go.
Attach the Protector.
5
• Store the removed protective cap.
• When removing the Z3210, install the protective cap.
To avoid an electric shock, be sure to connect the test
lead properly.
This section describes how to connect the test lead to the
instrument. Connect the test lead’s connectors to all four terminals:
the SOURCE terminals (positive and negative) and the SENSE
terminals (positive and negative).
(Black)
(Red)
Align the marks
of the same color.
SOURCE
SENSE
(Red)(Black)
When using the 9460 Clip Type Lead with Temperature Sensor
(option), connect the mini plug to the TEMP.SENSOR terminal.
See “3.9 Measuring Temperature” (p. 68).
You can bundle up the Pin Type Lead (the 9465-10, 9772, L2020)
and the 9466 Remote Control Switch (option).
Attach the Remote Control Switch to the probe of the Pin Type
Lead. Bundle up the two cables using the spiral tubes.
Model 9465-10
(1)(2)(3)(4)
Model L2020
(4)(5)
(1) Model 9466 Remote Control Switch
(2) Probe
(3) Spiral tube (small)
Bundle up the cables at the center of the lead between the
probe and probe-side junction with the spiral tube.
(4) Junctions
(5) Spiral tubes (large)
Bundle up the cables between the junctions if you wish.
The instrument can show the date and time. Conrm the date and
time settings when using the instrument for the rst time. The time
is displayed using a 24-hour clock. The instrument’s calendar can
automatically recognize leap years.
1
2
3
(Hold down for at least
1 s.)
Let the date and time
appear.
Holding down the key at
least 1 s again will hide the
date and time.
Enter the date and time (in
the yyyy/mm/dd hh:mm
format).
Conrm your entry.
Date and time will not be
set if you switch over the
display from the clock
setup mode without
pressing the ENTER key.
You can also set the date and time using GENNECT ONE
or GENNECT Cross.
Check the instrument for any damage that may have occurred
during storage or shipping, and perform functional checks before
use. If you nd any damage to the instrument, please contact your
authorized Hioki distributor or reseller.
Inspection itemChecking method
Has the fuse
blown?
Has the test lead
broken?
Place the test lead into contact with the zeroadjustment board. If the resistance readout
remains the [−−−−] segments, the fuse may
have blown or the test lead may have broken.
Replace the fuse or test lead with a new one.
Does the
instrument’s
battery level
remain enough?
Inspecting
batteries to be
measured
48
The display, in the top right, includes the
battery level indicator
batteries. If the indicator exhibits , the
batteries should be replaced early. Please
have spare LR6 Alkaline batteries ready.
If terminals are covered with an insulating
layer, the measurement current cannot ow
suciently, resulting in measurement failure.
When the zero adjustment function executed, the instrument will
regard the measured values (correction values) as zero to display
subsequent measurement results.
Only if an accessory or optional test lead is used, the instrument
can meet the accuracy specications even without executing the
zero adjustment.
However, execute the zero adjustment in the following cases:
• When you wish to increase measurement accuracy
For the 3 m
on whether zero adjustment has been performed.
See “9.3 Accuracy Specications” (p. 125).
• When using a test lead, including Hioki product, that is not an
accessory or option of the instrument or whose length has been
extended
IMPORTANT
Use only the Hioki-specied test lead. Hioki does not guarantee
the accuracy and proper operation if any test lead not specied by
the company is used.
• Performing zero adjustment adjusts the zero points of all
ranges.
• Even after the instrument has been turned o, the correction
values will be retained and with the zero adjustment function
remaining enabled.
• After replacing the test lead, always perform zero adjustment
prior to measurement.
• Always use the included or optional zero-adjustment board
when performing zero adjustment.
• Keep the test lead short-circuited during zero adjustment.
• Keep the tips of the test lead away from any metal components.
• Keep the zero-adjustment board at least 10 cm away from the
instrument.
• Always use the accompanying or optional zero-adjustment
board when performing zero adjustment.
• Insert the pin tips into the hole on the zero-adjustment board
and place each of the SOURCE and SENSE terminals into
contact with the hole on the board. (See the gure below.)
SOURCE
SENSE
• Do not place the zero-adjustment board on top of the battery
or any metal. Electromagnetic induction eect could result in
unstable measurement values. In such a case, keep the zeroadjustment board away from any metal.
• If zero adjustment is performed with the Pin Type Lead short-
circuited at the tips or using a metal sheet other than the zeroadjustment board intended for this purpose, the instrument
cannot adjust the zero point accurately.
• When the distance between the terminals on the battery (target
under measurement) is more than that between the holes on
the zero-adjustment board, use the outermost holes to perform
zero adjustment.
• Consider the zero-adjustment board to be a consumable. It
is recommended to replace it with a new one after the use of
To evaluate whether batteries have deteriorated, rst, measure
the internal resistance of a fresh or non-defective battery, and then
decide the battery-deterioration evaluation values.
Deteriorated batteries will have about 1.5 to 2 times (values for
reference purposes) as high internal resistance, generating only
0.9 times as high voltage as a fresh one. Use these values as
guidelines when determining deterioration evaluation values.
Example of deterioration evaluation values
PASSWARNINGFAIL
FreshIn use
Initial value
Resistance:
Voltage:
The above values will vary depending on the manufacturer and
battery model.
See “1.1 Evaluating Battery Deterioration” (p. 23).
Connect the test lead to a battery under measurement.
4
Place all pins into contact
with the battery.
(Red)
+
See “11.1 Eects of Extending the Test Lead and Induced Voltage”
(p. 155), “11.2 Eects of Eddy Currents” (p. 156), and “11.4 Eects of
Current Density” (p. 159).
Use the 9460 Clip Type Lead with Temperature Sensor (option) to
measure battery temperature.
Use the 9451/9451S Temperature Probe (option) to measure an
ambient temperature.
See “Options” (p. 4).
Connect the connectors
1
of the 9460 Clip Type Lead
with Temperature Sensor to
the instrument.
Connect the mini-plug of the
2
9460 Clip Type Lead with
Temperature Sensor to the
TEMP.SENSOR terminal.
Connect the mini-plug of the
9451/9451S Temperature
Probe to the TEMP.SENSOR
terminal.
The instrument will detect
the temperature sensor and
automatically display the
temperature.
You can toggle between the two temperature measurement units:
Celsius and Fahrenheit.
See “How to toggle the temperature measurement units” (p. 33).
4 Comparator Function (Evaluation Based on Threshold Values)
HIOKI BT3554F961-03
(Evaluation Based on
4
Threshold Values)
4.1 Overview
The comparator function compares measured values of batteries
with the preset threshold values to evaluate batteries on a threelevel basis consisting of PASS, WARNING, and FAIL.
Comparator threshold values
Set the resistance warning threshold, resistance rejection value,
and voltage warning threshold. Up to 200 comparison conditions
can be set.
For information about how to set the thresholds, see “1.1 Evaluating
Battery Deterioration” (p. 23).
Comparator buzzer
The instrument with the default settings will produce beeps when
the comparator yields the WARNING or FAIL result.
See “4.4 Setting the Comparator Buzzer” (p. 80).
This section describes how tot set threshold values for the
comparator (resistance warning threshold, resistance rejection
value, voltage warning threshold).
You can set the threshold values through GENNECT ONE
or GENNECT Cross.
See GENNECT ONE (contained in the accompanying CD)
or User Manual on GENNECT Cross.
Example: Threshold values for a battery that initially has
an internal resistance of 0.4
a voltage of 2 V.
Resistance warning threshold: 0.6 Ω (1.5 times the initial value)
Resistance rejection value: 0.8 Ω (2 times the initial value)
Voltage warning threshold: 1.8 V
*: The initial values mean the resistance value a fresh battery or
non-defective battery has and the initial voltage value such a
battery can generate.
red and black wires of the test
lead will cause the [WARNING]
result.
[WARNING]
(Black)(Red)(Red)(Black)
Voltage
evaluation
method
[AbS]
(Default
setting)
[PoL]
Comparison method
Evaluates absolute voltage
values, regardless of whether
they are positive or negative.
The [WARNING] result will be
given for the negative voltage
value.
If the test lead is placed into
contact in reverse polarity with
a battery (the red and black
probes with the negative and
positive terminals, respectively),
the result will be given.
Data to be
saved
Signed
(minus sign
only)
Signed
(minus sign
only)
You can set the evaluation method using version 1.8 or
later of GENNECT Cross.
If you set the resistance rejection value that is less than the
resistance warning threshold, the warning threshold will change
to the same value as the resistance rejection value.
Conrm your entry.
The display will return to
measurement mode with the
comparator function enabled.
The settings are now saved.
Examples of how to read the comparator output table
Example 1:
If the measured resistance is less than or equal to the resistance
warning threshold, and the measured voltage is more than or equal
to the voltage warning threshold, the [PASS] segment will appear.
Example 2:
If the measured resistance exceeds the resistance warning
threshold but is less than or equal to the resistance rejection value,
and the measured voltage exceeds the voltage warning threshold,
the instrument will show the [WARNING] segment and produce
beeps.
When the resistance warning threshold and resistance are set to the same
value, the boundary conditions are as shown below:
This section describes how to set the instrument to produce beeps
according to the comparison result. The comparator buzzer can be
set in the following states: By default, the instrument has been set
to produce beeps when the comparator gives a WARNING result or
a FAIL judgment.
Disabled
Sounds for
PASS
Sounds
for FAIL
judgments
The instrument will not produce beeps regardless of
comparison results.
The instrument will produce beeps when the comparator
gives a PASS judgment.
The instrument will backlight the display in red and
produce beeps when the comparator gives a WARNING
result or a FAIL judgment.
When you press the key, the present comparator buzzer setting
will appear. Press the key repeatedly to cycle through the settings.
Disabled
Sounds for PASS
Sounds for FAIL
After a certain period of inactivity, the instrument will conrm your
entry and the display will return to measurement mode.
The instrument can store up to 6000 data sets consisting of
presently measured values*.
After measurement, you can browse and send saved data to your
computer or mobile device.
The internal-memory structure is as follows:
*: Date and time, resistance, voltage, temperature, comparator
*1: Can be chosen from between 1 and 100.
*2: Any comment can be registered. Strings at most 72 bytes
*3: The number assigned to the battery under measurement. Can be chosen
You can save measured data associating with prole information
previously registered. This makes the control of information,
including the UPSs equipped with batteries under measurement and
their locations, easier.
• Holding down the CLEAR key for at least 1 s can delete the
data saved most recently. However, you can delete immediately
after the data has been saved only.
Every time you hold down the key for at least 1 s, the
instrument will delete the data that is the latest at the time and
return the display to the rst memory number in the unit to
display the contents.
• While the measurement recording prompt is operating, the
instrument will return the memory number corresponding to the
rst battery number to display the contents.
Save measured values.
The instrument will assign
the chosen number to the
measured values and save
them.
After the data has been saved,
the subsequent available
memory number will appear.
Immediately after the display freezes the measured values, the
instrument will automatically save them.
Press the A.HOLD/A.MEM key several times to display the [AUTO
MEMORY] segment. The memory function will also be enabled.
Automatic holdAutomatic memory
Automatic hold and
Disabled
Use the cursor keys to choose a memory number to save. If you
choose the memory number already assigned to a measured data
set, the [USED] segment will appear.
automatic memory
Concurrent use of the automatic memory and automatic hold
functions lets the instrument automatically freeze the displayed
data and save it.