Tanita BD-815U User Manual

Professional Baby Scale

INSTRUCTION MANUAL

BD-815U

GB

Thank you for purchasing the TANITA digital baby scale.
For optimum performance and safety, please read this
manual carefully, and keep it handy for future reference.

Contents

Before Use

Safety Notes

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Caution Symbols

Warning
Caution
Maintenance
Instructions for Measurement

<Usage Conditions>
<Storage Conditions>
<Power Source>
<To measure correctly>
<Explanation of terminology>

Baby Basket Attachment & Removal
Part Names & Accessories
Names and Functions of Display Panel and Operation Keys

How to Use

Power supply
How to Set Up Correctly
How to Use the Scale

•When tare is not specified

•Tare weighing function

•Canceling the tare function

Memory Function for Measured Values

•Memory Function

•Memory Value “Recall” Method

•Display Weight Gain

Various Setting Methods

•Display Hold Time

•Auto Power Off Time

Output Data Format

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10
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4
4

4
5
5
6

6
6
6
6
7

8

14
16
17

18
19
19

20
21

When necessary

Troubleshooting
Specifications

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32

Safety Notes

Caution Symbols

Thank you for purchasing this precision crafted Tanita product. For optimum per­formance and safety, please familiarize yourself with the Caution Symbols below.

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These symbols are designed to alert the user to potential hazards when using this
equipment. Ignoring these Caution Symbols may result in serious injury, or damage
to the product.
Please be sure to review before proceeding with the INSTRUCTION MANUAL.

This symbol indicates the possibility of serious

Warning

injury if the product is mishandled or instruc­tions are ignored.

Caution

• Please make sure you place the scale on a level and stable surface. If the equipment is
used when the scale is unstable because not all feet are on the surface, there may be a
risk of stumbling or inaccurate measurement.
Never jump on the scale, there may be a risk of stumbling and malfunction of the equip­ment.

• For the BD-815U; Ensure you use the original AC Adapter (MODEL: AD-0920M). Using
an AC Adapter other than the original one may cause malfunction.
Do not insert or remove the plug by the cable.

• Do not place a finger into the gap or hole of this equipment.
You may get injured.

This symbol indicates the possibility of physi-

Caution

Warning

• Inserting and Removing the AC adapter
To reduce the risk of electric shock or product damage, never insert or
remove the AC adapter with wet hands.

• Do not under any circumstances dismantle or alter the device, as this
could result in electric shock or injury as well as adversely affect the preci­sion of measurements.

• To prevent fire hazard
Use only a correctly wired (120V AC) outlet, and do not use a multiple
outlet extension cable.

• Do not sit on the edge of the scale, jump on it, or bounce on the baby bas­ket, as any resultant fall or slip may cause serious injury.

• The baby basket is not designed to accommodate individuals weighing
more than 33lb(15kg).

• As a safety precaution, infants must not be left unattended on the baby
basket.

cal injury or equipment damage if instructions
are ignored.

This symbol indicates general precautions that
should be taken when using this product.

Maintenance

This is a precision manufactured and accurately calibrated product. Please
observe the following instructions.

• Never disassemble or adjust the equipment, as this may cause malfunctions. The equip­ment should only be inspected in accordance with the regulations in each country.

• When not in use for a long time, unplug the AC Adapter from the wall socket.

• Do not wipe the equipment with corrosive chemicals (benzine, cleaner, etc.). Please use
a neutral detergent to clean the equipment.

• Avoid subjecting the equipment to excessive shocks or vibrations.

• When disposing of this unit, please do so in accordance with the prevailing regulations
in each country.

• If an unauthorised person attempts to disassemble or repair any of the part, the warran­ty will become invalid. When the unit malfunctions, please consult your nearest Tanita
sales office or agent.

• Do not wash any part of the scale other than the basket with water.

Do not lean the product against the wall where people and objects pass by.

Someone may touch the product and it may fall down

54

Safety Notes (continued)

Instructions for Measurement

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Please observe the following instructions for accurate measurement.

• Measurement may not be possible on a surface that is strongly vibrating. In such cases
transfer the equipment to a stable surface with little or no vibration.

• In the case to move to a place with a temperature difference of 36˚F (20˚C) or more, leave
it before use for 2 hours or more after moving.

• While taking measurements, please keep any persons using transmitters, such as a
cellular phone, away from the unit to avoid causing margin errors.

<Usage Conditions>

Temperature Range for Use : 41˚F - 95˚F (5˚C - 35˚C)
Relative Humidity : 30% - 80% (without condensation)

<Storage Conditions>

Temperature Range of Environment : 14˚F - 122˚F (-10˚C - +50˚C)
Range of Relative Humidity : 10% - 90% (without condensation)
To avoid malfunctions, avoid storing the equipment where there is direct sunlight,
significant temperature changes, the risk of dampness, a large amount of dust, in
the vicinity of fires, or where there is the risk of receiving vibrations or shocks.

• Capacity

This shows the maximum weight that can be measured by the scale.

[Example]

In the case of Maximum capacity 33lb (15kg), it can measure up to 33lb (15kg).
* One exceeding the weighing capacity cannot be measured.

•d

This shows the amount of one scale mark. In the case of a digital display, this shows the inter­val of the numeric value to change.

[Example]

In the case of Minimum Graduation 0.1oz (0 - 12lb) 0.2oz (12 - 33lb) or 2g (0 - 6kg) 5g (6 - 15kg)
the display increases and decreases.

• Extend Minimum Graduation

Enables changing precision of measurements.

• Tare

The container, towel, blanket, etc., used when measuring weight is called “tare”.
To measure the net-weight after subtracting the weight of the tare is called "tare weighing."

Explanation of terminology

<AC Adapter>

Model

Input

Output

AD-0920M

120 VAC 60Hz

9 VDC 200mA

To measure correctly

Do not measure at a place where the temperature fluctuates
greatly.

Errors may be observed in the measured value. In the case to move to a
place with a temperature difference of 36˚F (20˚C) or more, leave it
before use for 2 hours or more after moving.

• Do not use cellular phones or microwave therapy equipment near this equipment.
It may not measure correctly due to equipment malfunction.

76

Baby Basket Attachment & Removal

A.Attachment

The baby basket is not attached to the main unit when unpacked.

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1

Pull out the lever.

Line

2

3

Align the far edge of the basket
with the stickered line.

Slide the basket over the plat­form until it stops.

B.Removal

The baby basket can be removed and washed.

1

Pull out the lever.

While gently pushing down the

2

3

lever, slide out the basket in the
displayed direction.

It is ready to remove the basket
once its far edge is aligned with
the stickered line.

4

Make sure the basket is firmly
secured and then fix it to the
platform by pushing in the lever.

Caution

Make sure the basket can't drop.

Caution

Once the basket is removed, take care not to
insert a finger or drop anything into the gap.

98

Part Names & Accessories

Names and Functions of Display Panel and Operation Keys

Front

Baby basket (for infant)

Display Panel

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Lever

Measurement is
stabilized.

Tare is specified.

Display is on
hold.

* The pointers (black triangles) indicate active items.

* The backlight is on only when the AC adapter is used.

* Thesmark appears in the digital display next to each of the

following operations, indicating which are in effect.

Display panel

Operation keys

Refer to page 11

Back

Battery cover

Level gauge

Adjusters (4)

Weight is memorized.

Operation Keys

MEMORY

* Memory of

current weight.

* Sets display

hold time.

Weight gain is displayed
for 5 seconds after pressing
the Weight Gain key.

* Available key make a “beep” sound when pressed.

WEIGHT GAIN

* Indicate the weight dif-

ference between memo­ry weight and current
weight.

* Set auto power off time.

RECALL

Indicates the memory weight
when it has memory weight.

WEIGHT LOCK OFF

Sets the weight lock off.

Memorized value is
recalled and displayed.

g/lb•oz

AC adapter inlet

RS-232C connector

Battery housing

Selects grams or
pounds and ounces
for weighing unit.

Confirmation of accessories

Instruction manual (this book) AC adapter (9V)

AA-size batteries(4)

ON/TARE

Turns the power on
or sets the tare.

ZERO

Scale resets to
zero.

OFF

Turns power
off.

10 11

EXTEND

Provides greater
precision.

Power Supply

How to Set Up Correctly

Using batteries

(1) Turn the scale upside-down,

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and turn the finger screw on
the battery cover counter­clockwise (as indicated) to
release the screw.

•When the batteries start to run low, appears
on the display panel as a warning.

All (four) batteries should be immediately
replaced with new ones at the same time.
Note) Do not use a combination of alkaline and
manganese batteries, as such an arrangement
may result in equipment failure.
Note) Rechargeable batteries are NOT recom­mended.

•A set of standard batteries should last about
one year (assuming four readings a day).

(2) Lift off the battery cover. (3) Insert new batteries.

* Insert the batteries

such that the negative
terminals of the batter­ies are pushed up
against the coils within
the battery housing.

Image

Use the scale in a firm, flat and stable location.

• Do not position it anywhere that is subject to direct
sunlight, near heating equipment, or directly in the
path of an air conditioner outlet.

• Do not use it anywhere that is subject to significant
temperature change.

• Do not position it anywhere that is either damp or
subject to high humidity.

• After positioning the scale, pick up the baby basket
from both sides to confirm that the basket is not easily
removed before use.

• Ensure that the lever is pushed in.

Level gauge Check

•Place the scale on a flat surface to ensure

accurate measurement.

•Turn the four adjusters such that the air bub-

ble in the level guide is positioned exactly in
the center. Confirm that all four adjusters
are in contact with the surface.

Level gauge

<View from above>

Red

Using the AC adapter

(1) Insert the AC adapter jack into the AC

adapter inlet on the right side of the main
unit.

(2) Plug the AC adapter into the power outlet.

Caution

This equipment must be used
with the included AC adapter.

Air bubble

Adjusters (4)

1312

How to Use the Scale

取り扱い上のご注意

General measurement

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Press the key to turn on

1

the power.
After flashing the display.

is displayed.

< Example of the lb • oz display >

Press the key to select the unit.

2

The display alternates between the two units by pressing the key.

* Unit selection can be made valid only when “0” is displayed.

st

lb • oz unit g unit

Note

•Press the key to cancel measurements or turn off the display.

•The extended display function cannot be used if “Hold Time” is canceled, or if
the “Recall” or “Weight Gain” is displayed.

After measurement, remove the

2

baby from the baby basket.

If the display hold time has been set, the
measurement remains on display for the
set time. The display can be reset to

at any time by pressing the

key.

Extended Display Function

When the key is pressed while the

display is on hold, the weight is displayed

0.05oz (1g) units for as long as the key
remains pressed.

* The extended display function cannot be used if

“Hold Time” is canceled, or if the “Recall” or
“Weight Gain” is displayed.

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Keep pressing

14

When tare is not specified

Place the baby on the baby basket.

Once the scale stabilizes and the weight is con-

1

firmed, stabilized (") and weight lock (t) will
appear. (Beep sound)

Measurement instructions

•A warning sound beeps if a baby is placed

on the basket before is dis-

played.
If it happens, remove the baby from the bas­ket.

By releasing the key simultaneously

return to the previous display.

Release

15

How to Use the Scale (continued)

Tare weighing function

After turning on the power, the bath towel, diaper, blanket etc. is

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deducted by pressing key. Then, the baby’s actual (i.e. net)

weight (excluding the weight of the towel, diaper, etc.) can be meas­ured.

Place the bath towel or blanket

1

on the scale.

The weight of the bath towel is displayed.

End of measurement.

4

Remove the baby from the baby basket.

When Hold Time is set, the measurement
is retained for the set time, after which the

display resets to .

Canceling the tare function

Press the key.

2

(Beep sound)

is displayed, and the pointer

beside NET is shown. (Beep sound)

Place the baby on the baby bas-

3

ket.

The net weight of the baby (excluding the
weight of the bath towel, etc.) is dis­played. (Beep sound)

Remove the tare item(s) from

1

the basket.

Press the key with noth-

2

ing on the basket.

(Beep sound)

The tare function is canceled and

is displayed.

Caution

•Tare weighing is possible only within the maximum tare weight 4lb (2kg).

1716

Memory Function for Measured Values

Memory Function

When the key is pressed while the display is on hold, the dis-

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played value is memorized.

Press the key.

1

(Beep sound)

* When the previous reading is memorized, the

“Memory” pointer is shown.

Pressing the key overwrites the
existing record with the currently dis-

played value as the new memorized value
while the display is on hold.

< Display is on hold >

Memory cancellation

Press the key while

1

This function is used to check the value memorized previously.

Press the key.

1

(Beep sound)

The value memorized previously is shown
for 5 seconds.

* This key is valid only when this scale has a mem-

orized weight.

“Memorize” the weight before breastfeeding, and then take another
measurement after breastfeeding. The increase is calculated automati­cally, by pressing weight gain.

Place the baby on the baby basket.

(Beep sound)

1

Memory Value “Recall” Method

5 seconds

Display Weight Gain

is displayed.

The memorized value is deleted, and the
“Memory” pointer disappears.

Press the key.

2

“The currently displayed value – memorized
value” is displayed as the weight gain
(breastfeeding amount) for 5 seconds.

* If the new reading (after breastfeeding) is less than the memorized value (before breast-

feeding), a minus sign (–) is displayed.

(Beep sound)

Caution

•When checking the weight gain for another baby, be sure to memorize his/her
weight before measuring the weight gain. Each baby’s weight must be record­ed before and after breastfeeding for accurate measurement of the breastfeed­ing amount.

1918

Various Setting Methods

Three types of setting, namely “Display Hold Time” and “Auto Power
Off Time” can be used on this scale.

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Press key.

1

Press key while the screen is

(Beep sound)

2

flashing.

(Beep sound)

The “Auto Power Off Time” setting automatically turns off the power
when the scale is unused for the specified length of time.

Press key.

3

The auto power off time is shown (the default is 15 minutes), and changed by,
pressing this key.

* The auto power off times can be set are 15 minutes, 30 minutes, 45 minutes, 60 minutes, or

-- (None).

--(None) means that the auto power off function is deactivated.

Display Hold Time

You can set certain seconds to keep the measurement on the display after remov­ing the baby.

Press key.

3

The hold time is shown (the default is 10 seconds), and the display changed by
pressing this key.

* The hold times that can be set are 10 seconds, 20 seconds, 30 seconds, or -- (None).

-- (None) means the hold function is deactivated.

(Beep sound)

4

t

To complete to set the auto power

off time, press again.

Auto Power Off Time

(Beep sound)

ss

t

t

20

t

To complete to set the hold time,

4

press again.

(Beep sound)

ss

s

(Beep sound)
To save and complete that setting.

21

Output Data Format

Explanation for RS-232C-compliant output

This explanation is for the interface to output the readings from the

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Digital Baby-Scale BD-815U to external equipment (e.g. PC) as a RS­232C-compliant signal.

Grams (g) mode (transmission data)

Transmission data is output immediately after measurement regard­less of the status of the reception side (e.g. PC). Therefore, the recep­tion side must always be ready to receive data before any measure­ments are taken.

Specifications

Communication standard EIA RS-232C

Communication method Asynchronous

Signal speed 9,600bps

Data bit length 8bit

Parity NONE

Stop bit 1bit

Terminator CR+LF

Flow control None

Item Header Output data (ASCII code)

Control data
Control data Fixed at 1

Model No.

Body weight XXXXX 3~5 bytes variable length (unit: g)

123456789101112131415161718192021222324252627

{{

28 29 30 31 32

,,6611,,00

A. When the display is held

Fixed at 16

{0

~0

"XXXXXX" 8-byte fixed length (“BD-815”)

MO

Wg

˜˜

Details

33,,ggWW,,""551188--DDBB"",,OOMM,,11,,00

LFLFCRCR227799

Signal line name and connection method

Terminal no. Signal name

1
2
3
4
5
6
7
8
9

TXD

GND

Item Header Output data (ASCII code)

Weight gain

Memorized weight XXXXX 3~5 bytes variable length (unit: g)

12345678910111213141516

Item Header Output data (ASCII code)

Memorized weight XXXXX 3~5 bytes variable length (unit: g)

1234567 8 9

B. When the Weight Gain key is pressed

XXXXXX 1~6 bytes variable length (unit: g)

Gg
Rg

LFLFCRCR668822,,ggRR,,002211,,55ggGG

C. When the Recall key is pressed

Rg

Details

Details

LFLFCRCR88668833,,ggRR

Connection example

BD-815U PC, etc.

Note

•Commas (,) are used to separate data.

•Terminator (end of data) is CR (ASCII code: 0DH), LF (ASCII code: 0AH).

2322

Output Data Format (continued)

Pounds/ounces (lb•oz) mode (transmission data)

Transmission data is output immediately after measurement regard-

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less of the status at the reception side (e.g. PC). Therefore, the recep­tion side must always be ready to receive data before any measure­ments are taken.

A. When the display is held

Item Header Output data (ASCII code)

Control data Fixed at 16
Control data Fixed at 1

Model No. "XXXXXX" 8-byte fixed length (“BD-815”)

Body weight XX.XX.X 5~7 bytes variable length (unit: lb•oz)

123456789101112131415161718192021222324252627

{{

28 29 30 31 32 33

{0

~0

MO

Wo

˜˜

,,6611,,00

Details

99,,ooWW,,""551188--DDBB"",,OOMM,,11,,00

LFLFCRCR33..33..

B. When the Weight Gain key is pressed

Item Header Output data (ASCII code)

Weight gain

Memorized weight XX.XX.X 5~7 bytes variable length (unit: lb•oz)

1234567891011121314151617181920

XXX.XX.X 5~8 bytes variable length (unit: lb•oz)

Go
Ro

Details

LFLFCRCR77..5511..88,,ooRR,,55..33..00,,ooGG

C. When the Recall key is pressed

Item Header Output data (ASCII code)

Memorized weight

1234567891011

XX.XX.X 5~7 bytes variable length (unit: lb•oz)

Ro

LFLFCRCR77..5511..88,,ooRR

Details

Note

•Commas (,) are used to separate data.

•Terminator (end of data) is CR (ASCII code: 0DH), LF (ASCII code: 0AH).

24

25

Troubleshooting

Specifications

If you are concerned that the scale may not be functioning correctly,
please check the following points before requesting repairs.

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Check pointsProblem

Nothing is displayed

when the key is

pressed.

is displayed.

• Have the batteries been removed, or has the AC
adapter been unplugged?

• Are the batteries running low?

s

• Is anything stuck to the terminals of the batter­ies?

• The batteries are running out. Please replace

s

them immediately or use the AC adapter.

Page

P.12

P.12

Extended calibration (uncertified)

After the power is
turned on,
is displayed, and an

• Is any pressure being applied to the baby basket

s

when the power is turned on?

• Has basket been removed?

P.14

Model

Capacity 33 lb (15000g)

d (division)

Maximum tare 4lb (2000g)

Display panel

External interface

Power supply

Regular voltage

0.1oz(0-12lb) 0.2oz(12-33lb)
2g (0-6000g) 5g (6000-15000g)

0.05oz (1g)

Backlit LCD
(Backlight is on only when the AC adapter is used)

RS-232C (D-sub 9-pin female connector),
unidirectional output

Input: AC 120 V (60 Hz) Output: DC 9 V / 200mA

DC 6 V (using the batteries)
DC 9 V (using the AC adapter)

BD-815U

alarm sounds.

0.12 W or less (using the batteries)

0.35 W or less (using the AC adapter)

20mA (using the batteries)
38mA (using the AC adapter)

is shown
during measure­ment.

• The maximum measurable weight capacity for

s

the scale (33lb / 15 kg) is exceeded.

Power consumption

P.7

Consumption current

Operating temperature 41˚F - 95˚F (5˚C - 35˚C)

Storage temperature 14˚F - 122˚F (-10˚C - 50˚C)

Overall dimensions

Main unit mass Approx. 10.1lb(4.6kg)

Main material ABS resin

Made in Japan

D16.1 W23.6 H6.2in (D409 W600 H157mm)

2726

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© 2007 TANITA Corporation. All Rights Reserved. BD8157001