Yamato Body Planner DF870 User manual

High-Accuracy Body Composition Analyzer
Body Planner™ DF870
Operation Manual
Yamato Scale Co., Ltd.
Carefully read this operation manual and the product warranty to use this product properly.
Keep this manual for future reference.

1
Introduction
Thank you for your purchase of our Body Planner™ DF870, a digital body composition monitor (“the
DF870”). You can use the DF870 not only for transactions or certifications, but for a wide range of
commercial activities (such as medical and nursing care as well as fitness) since it can indicate the
body fat percentage and visceral fat index (which serve as barometers of health), in addition to SMI
and other information (which is used as a guide to maintain muscles). The DF870 also allows you to
control your health on your smartphone by scanning a generated QR code.
Thoroughly read this operation manual to use Body Planner™ DF870 in an optimum condition for a
long time and to make full use of it.

2
Contents
Chapter 1 Read these instructions before use .............................................................3
1-1. For safe and proper use ................................................................................... 3
1-2. Cautions and instructions on use ........................................................................ 6
1-3. Available functions .......................................................................................... 7
1-4. Product package ............................................................................................ 7
1-5. Name of each part .......................................................................................... 8
1-6. To maintain the performance of the DF870 ............................................................ 8
Chapter 2 Preparations before use ............................................................................10
2-1. Cautions on assembling the DF870 ................................................................... 10
2-2. Place of installation ....................................................................................... 11
2-3. Display panel and operation keys ..................................................................... 11
2-4. Basic operations (how to use Weight mode) ........................................................ 12
Chapter 3 How to use Body Composition mode ........................................................16
3-1. To get the correct measurement results .............................................................. 1 6
3-2. How to use Body Composition mode ................................................................. 17
3-3. How to interpret the printed results .................................................................... 22
3-4. How to interpret the evaluations (evaluation criteria and average values) .................... 23
3-5. How to set the personal number ....................................................................... 24
3-6. Personal correction function ............................................................................ 25
Chapter 4 User menu.................................................................................................26
4-1. How to call the User menu screen..................................................................... 26
4-2. Time setting ................................................................................................ 26
4-3. Operation setting / Parameter list ...................................................................... 27
4-4. Descriptions about parameters ........................................................................ 28
4-5. Number of measurements .............................................................................. 29
Chapter 5 Connection to external devices .................................................................30
5-1. Connection to a smartphone............................................................................ 30
5-2. Connection to a personal computer ................................................................... 30
5-3. How to install the USB driver ........................................................................... 31
5-4. How to use the DF870 communication software ................................................... 32
Chapter 6 DF870 for other than transactions or certifications ....................................34
6-1. DF870 for other than transactions or certifications ................................................. 34
6-2. Gravity acceleration setting for each region ......................................................... 34
6-3. How to correct the gravity acceleration ............................................................... 36
Chapter 7 Options......................................................................................................37
7-1. Optional Bluetooth™ wireless communication ...................................................... 37
7-2. Communication distance of Bluetooth™ wireless communication .............................. 37
7-3. Paring for Bluetooth™ wireless communication .................................................... 37
Chapter 8 Error indications ........................................................................................40
Chapter 9 Specifications ............................................................................................42
9-1. Outside drawing ........................................................................................... 45

Chapter 1 Read these instructions before use
3
Chapter 1 Read these instructions before use
1-1. For safe and proper use
Carefully read this section “For safe and proper use” before use, and properly use the DF870. The instructions
in this section are intended for safe use of the DF870, preventing harm to yourself and others, and also
preventing damage to property. In addition, after reading this manual, carefully keep it in a place where you
can quickly refer to it when needed.
• In this manual, the hazardous levels and descriptions are defined as follows:
Danger indicates that incorrect handling with disregard of the description could result in
death and/or severe injury.
Warning indicates that incorrect handling with disregard of the description could result in
personal injury and/or property damage.
Caution indicates that incorrect handling with disregard of the description could result in
either personal injury or property damage.
Don’t indicates a prohibited action that you must NOT do.
Do indicates a mandatory action that you must do.
Before using the DF870, carefully read and understand the following instructions labeled as Danger,
Warning, and Caution, and ensure to observe them.
Danger
: Never use the DF870 together with the following medical electronic devices:
Otherwise, these devices may malfunction.
• Body implant type medical electronic devices such as a pacemaker
• Life-support electronic devices such as a heart-lung machine
• Wearable medical electronic devices such as an ECG sensor
: To avoid an electric shock
(1) Ensure to connect a ground wire to prevent severe injuries caused by an electrical leakage.
(2) Do not step on the power cord with your foot or other parts.
(3) Never remove any parts that are fixed with screws, such as the indicator unit.
(4) Securely connect or disconnect the power plug, holding its plastic part.
: To avoid an explosion or ignition
The DF870 is not explosion-proof.
Do not use it where a combustible gas, hazardous material, or other hazards may be present.

Chapter 1 Read these instructions before use
4
: To avoid a fire or electrical shock
If you use the DF870 that is in abnormal conditions (e.g. it is giving off smoke or a strange
odor), a fire or an electric shock may occur.
Immediately unplug the power cord from the electrical outlet. Confirm that it no longer gives out
smoke, and then ask your vendor for repairs.
The users are strongly advised not to repair the DF870 on their own as doing so is very
dangerous.
Warning
: Do not conduct therapeutic exercise through self-diagnosis.
Use measured results only as a guide. When conducting therapeutic exercise or going on a
diet, be sure to observe the instructions from the doctor or a specialist.
: If the display tube is damaged and leaking fluid, ensure that the fluid does not enter
anybody’s mouth.
The LCD display tube contains poisonous fluid. Pay special attention to babies and small
children to keep them away.
: Do not stand on the platform with socks or wet feet.
If you slip on the platform, you may suffer serious injuries. Stand on the platform with bare feet.
: Do not use the DF870 on a slippery floor.
If the DF870 slides during use, you may suffer serious injuries. Use it on a non-slippery floor.
: Do not stand on any places other than on the platform.
Otherwise, the DF870 may tip over, leading to serious injuries. If you have any physical
impairment, ask a helper for assistance.
: Do not jump or bounce on the DF870.
You may trip or fall, and suffer serious injuries. It may also cause machine failure. Gently step
on the platform.
: Do not forcibly bend the power plug or place anything heavy on it.
Otherwise, the power plug may get damaged, leading to a fire or electric shock.
If the power plug is damaged, do not use the DF870.
: Do not use the DF870 if its cord is caught on something.
Otherwise, the DF870 may tip over, leading to injuries.
: If the DF870 gives off smoke or a strange odor, stop using it.
Otherwise, a fire may occur. Immediately unplug the power cord and consult your vendor.
: Never disassemble or modify the printer.
Otherwise, the printer may generate heat and cause ignition, leading to a fire or other
accidents.
: To avoid injuries and property damage
(1) When you place several items on the weighing platform, ensure to keep them from
collapsing or falling down.
(2) Unplug the power cord from the electrical outlet after use.
(3) Do not place your finger(s) into a gap, a hole, or any other pinching points on the DF870.
(4) Never disassemble or modify the DF870.
(5) When you carry or move the DF870, be sure to hold the bottom of the DF870 with both
hands. (Never carry it in a poor posture or by holding the indicator section or the
column.)

Chapter 1 Read these instructions before use
5
Caution
: Do not lean against the DF870.
Otherwise, the DF870 may tip over, leading to injuries or machine failure.
: Do not place your finger(s) into a gap, a hole, or any other pinching points on the
platform. Do not forcibly pull any cords (especially the power plug).
Otherwise, you may get injured or machine failure may occur.
: Do not drop any metal pieces into the printer or a gap. Do not spill any liquids such
as water over the DF870.
Otherwise, a fire, electric shock, or machine failure may occur.
: Do not use the DF870 in any areas other than those specified in the nameplate.
Otherwise, a measurement error occurs on the DF870.
: Never use the DF870 in an extremely humid place.
Otherwise, a fire, electric shock, or machine failure may occur.
: Do not use magnetic therapy equipment or microwave therapy equipment near the
DF870.
Otherwise, the DF870 may malfunction, leading to incorrect measurement.
: Never touch the thermal head section immediately after printing.
The section can be very hot immediately after printing. You may burn yourself if you touch it.
: Do not drop the DF870. Do not place it on its side during storage.
Otherwise, machine failure may occur.
: To prevent damage to the DF870
(1) Do not push the display panel or operation keys with your fingernail or other pointed
objects.
(2) Observe the specified input voltage and operating conditions.
(3) Do not place anything heavier than the weighing capacity on the weighing platform.
(4) Do not apply any excessive impact or vibration to the platform, for example by dropping
an item on it.
: To maintain the performance of the DF870
(1) Do not place the DF870 in a place close to any equipment that generates vibrations.
(2) Do not place the DF870 in a place exposed to direct sunlight or air-blow from an air
conditioner.
(3) Place the DF870 on a rigid floor or table.
(4) Do not use the DF870 outside the range of the operating temperatures (5–35°C).
(5) Use the DF870 in a horizontal position.
(When the DF870 is not horizontal, ensure to make it level through adjustments with the
leveling legs and the auxiliary leg.)

Chapter 1 Read these instructions before use
6
1-2. Cautions and instructions on use
●Causes of machine failure
(1) Do not disassemble or modify the DF870.
(2) Do not push the display panel or operation keys with your fingernail or other pointed objects.
(3) Do not apply any excessive impact or vibration to the platform, for example by dropping an item on it.
(4) Do not drop anything on the DF870, jump on it, or drop it.
(5) Do not wash the DF870 directly with water. Instead, wipe the DF870 with a cloth moistened with water
or neutral detergent, and then wipe off the moisture with a clean dry cloth. Do not wipe the DF870
using thinner, benzene, or other solvents.
(6) Do not forcibly extend or twist the cord of the finger electrode stick.
(7) Do not touch the DF870 with wet hands. Otherwise, water/moisture may get into the DF870.
(8) Handling of thermal paper
• Store it in a dry, cool, and dark place.
• Do not rub it hard with anything hard.
• Do not place it near organic solvent.
• Do not make it contact with polyvinyl chloride film, an eraser, or adhesive tape for a long time.
• Do not place it on or under a sheet of paper just developed with diazo copying or wet copying.
• Always use the specified thermal paper.
●Causes of poor measurement
(1) Do not use the DF870 near a heat source or steam, or in a place exposed to direct sunlight or air-blow
from an air conditioner.
(2) Do not use the DF870 in a place exposed to excessive impact or vibration, or near any devices that
emit strong electromagnetic waves (e.g. microwave ovens).
(3) Use the DF870 on a level, stable place which is rigid enough to sustain the load.
(4) Use the DF870 in the specified operating conditions (5°C–35°C, 30–85% RH).
Note that, even in the specified operating range, measured results may become inaccurate under the
following conditions where condensations occur.
1) When the DF870 has been used or stored in a humid environment for a long time.
2) When the DF870 has been exposed to sudden temperature change even if the humidity is low (e.g.
cold water has been splashed over the DF870).
3) When the DF870 has been used in an atmosphere exposed to cold air (from a refrigerator etc.),
steam, or water vapor.
(5) Do not spray alcohol or chemicals, such as sodium hypochlorite, directly over the load cell.
●Storage locations
(1) Avoid storing the DF870 in a place exposed to high temperatures, high humidity, or long hours of direct
sunlight.
Note that a sudden change in the ambient temperature may cause condensations inside the DF870 and
disable the operation.
(2) The DF870 is a precision electronic device. Avoid storing it in a place with potential exposure to vibration
and/or impact.
●Disposal
Dispose of the DF870 as industrial waste (non-combustible waste). On disposal, comply with the disposal
procedures specified by your local government.
Proper measurement is required under the Measurement Act (in Japan). Ensure to inspect the DF870 and
conduct the weight check at the start of the operation.
Storage and disposal
Please inspect the DF870 at the start of the operation

Chapter 1 Read these instructions before use
7
1-3. Available functions
A digital body composition monitor, DF870 has the following functions.
Purpose Method
[Body composition measuring
function]
To measure your body fat percentage
and muscle mass.
If you make the measurement in Body Composition mode, you
can check your body fat percentage and muscle mass as well
as your weight.
[Measured results printing function]
To print out measured results
If you enable the printer setting, you can print out the weights
measured in Weight mode and the body compositions
measured in Body Composition mode.
[Measured results communication
function]
To send measured results to a
personal computer
If you enable USB or Bluetooth™ (option), you can send the
data to a personal computer (in Body Composition mode only).
[QR code generator function]
To conduct health control on a
smartphone
If you scan a QR code generated by a dedicated application,
you can import the data into a smartphone (in Body
Composition mode only).
[Preset tare function]
To subtract the weight of the clothes in
advance
If you press numeric keys when zero weight is indicated on the
LCD, the Tare setting screen appears, where you can set the
weight of the clothes in advance to subtract the weight.
[Transactions or certifications]
To write a measured weight in the
patient chart
If you are using the DF870 designed for transactions or
certifications, you can write the weight measured in Weight
mode, in the patient chart.
[One-touch tare function]
To measure the weight of a baby while
holding the baby
If an adult alone stands on the platform first and press Tare
key, the system subtracts the adult’s weight and measures only
the weight of a baby who is held by the person (* in Weight
mode only).
[Indication hold function]
To keep the weight indicated on the
LCD
If you enable the indication hold function, you can keep the
indicated weight value until you step down from the platform of
the DF870 (* in Weight mode only).
1-4. Product package
Main unit Accessories Option
●Operation manual, warranty card
●Finger electrode stick ●Back plate
●Wing bolt (x4)
●Knurled-head screw (x2)
●Thermal paper
Bluetooth™ wireless communication
* Refer to “Optional Bluetooth™
wireless communication” on page 37.

Chapter 1 Read these instructions before use
8
1-5. Name of each part
1-6. To maintain the performance of the
DF870
●Wash the platform with clean water and then carefully wipe off the moisture with a clean dry cloth.
If you use seawater, unclean water, or contaminated water, machine failure may occur.
●Use a soft cloth when wiping stains off the whole of the DF870. Do not use a scrubber, brush, or others.
●To clean the DF870 using neutral detergent, (1) moisten a sponge with neutral detergent, (2) wipe stains
off the DF870 with the sponge, (3) wash the DF870 with clean water, and then (4) carefully wipe off the
moisture with a clean dry cloth.
●To disinfect the whole of the DF870 using alcohol, (1) moisten a cloth with a solution of up to 80% alcohol
concentration, (2) wipe stains off the DF870 with the cloth, (3) wash the DF870 with clean water, and then
(4) carefully wipe off the moisture with a clean dry cloth. Wash the display panel with clean water.
●Never disassemble or modify the DF870. Otherwise, it may deteriorate the water-proof performance of the
DF870.
If, by any chance, you have disassembled the DF870 by mistake, be sure to contact your vendor.
●Do not drop the DF870. Do not allow the DF870 to hit against hard objects such as a table.
●Do not push the display panel, operation keys, or rubber area with your fingernail or other pointed objects.
●After use, store the DF870 in a dry place with small temperature fluctuation.
Leveling leg
USB port
Printer
Foot electrodes
Spirit level
Finger electrodes Finger electrode stick
Auxiliary leg
Column
Platform
Display panel
Operation keys
Printer open/close key Paper feed key

Chapter 1 Read these instructions before use
9

Chapter 2 Preparations before use
10
Chapter 2 Preparations before use
2-1. Cautions on assembling the DF870
Be extra careful not to pinch any part of your body when assembling. In addition, forcibly pulling a cable
breaks it or causes other failures. Therefore, assemble the DF870 with care.
Insert the column into the column retainer
to the end.
(Pay attention not to pinch a cable.)
Tighten the four wing bolts to fix the
column to the column retainer.

Put the loadcell cable into the column, and attach the back plate with the knurled-head
screws.
As shown in the figure below, ensure to attach the back plate with the power cable drawn out
of the slit.
* If you wish to connect a ground wire,
connect it to a screw on the back of the
column.

Press the printer open/close key to open the paper cover, and set printing paper upward as
shown in the figure below.
Set the paper so that its end is protruded from the paper outlet, and push the upper middle of
the paper cover to close the cover.
* Note that, if there is slack in the printing
paper, the paper may get jammed.
Column
Power
cable
Column
retainer
A
uxiliary leg
Loadcell cable
Back plate
Wing bolt
Knurled-head screw
Power cable

Chapter 2 Preparations before use
11
2-2. Place of installation
Ensure to place the DF870 on a level surface. Placing the DF870 on
an uneven, wobbly, or slanted floor leads to inaccurate measurement.
The DF870 has leveling legs for adjusting its levelness. Place the
DF870 on as flat a surface as possible, and turn the leveling legs so
that the bubble in the spirit level is located at the center of the reference
circle. At that time, ensure that all the leveling legs are in firm contact
with the floor.
Finally, to prevent the DF870 from toppling over, turn the auxiliary leg
to securely fix it in place.
Turn the leveling leg and the auxiliary leg clockwise to lower the
DF870, and turn them counterclockwise to raise the DF870.
2-3. Display panel and operation keys
(Display panel)
(Operation keys)
Power key
Press this key to turn on the power. Press and hold this key to shut down
the power.
Indication hold
key Fixes the indicated body weight until the person steps down from the
DF870.
Mode key Switches between Weight mode and Body Composition mode.
Zero reset key Resets the indication value to zero.
Tar e key
Subtracts the weight of the clothes placed on the DF870 and the helper’s
weight.
Set key Sets the input values, or executes the settings.
Return key Resets the input values and returns to the previous settings.
Mode sign Connection status sign
Stable sign
Zero sign Ta re s ign Hold sign
Hold on sign
Reference circle Air bubble
(Level)
(Front side
is low)
(Front side
is high)
(Right side
is high)

Chapter 2 Preparations before use
12
2-4. Basic operations (how to use
Weight mode)
Body Planner
To turn on the power.
Power key
Press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
The splash screen appears with a short beep sound. Then the
panel shows 0.00kg.
Body Planner
To switch from Body Composition mode to Weight
mode.
Mode key Set key
Press and then press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Body Composition mode: You can measure a person’s body
fat percentage and muscle mass in addition to
his/her weight.
Weight mode: You can measure a person’s weight which can
be entered in his/her patient chart (can be
entered only when using the DF870 designed
for transactions or certifications).
Body Planner
To reset the value to 0.00kg. [Zero reset]
Zero reset key
Press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Zero sign comes on with a short beep sound. Then the panel
shows 0.00kg.

Chapter 2 Preparations before use
13
Body Planner
To subtract the input value from measured weight.
[Preset tare]
(Example) To input 1.50kg as the tare weight of the clothes
the person is wearing (the tare for clothes)
Press the numeric keys 1 5 0 .
Tare key
Then press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Net sign comes on with a short beep sound. Then the panel
shows -1.50kg (to subtract the weight of the clothes).
To clear the tare, press Tare key again while nothing is
placed on the platform. When the tare is cleared, the panel
shows 0.00kg.
Body Planner
To subtract the weight of an item put on the DF870
from measured weight. [One touch tare] * in Weight mode only
Tare key
Place a tare on the DF870, and press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Net sign comes on with a short beep sound. Then the panel
shows 0.00kg (to subtract the weight of the item placed on
the DF870).
To clear the tare, press Tare key again while nothing is
placed on the platform. When the tare is cleared, the panel
shows 0.00kg.
Body Planner
To hold the indicated weight. [Clear the indication
hold] * in Weight mode only
Indication hold key
Press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Hold sign comes on with a short beep sound. After
measurement, Hold on sign comes on and the indicated
value will be fixed.
To clear the indication hold, press Indication hold key again.
The system clears the indication hold, and the indication
value can be changed.

Chapter 2 Preparations before use
14

Chapter 2 Preparations before use
15
Body Planner
To print the weight value manually. * in Weight mode only
Select Weight mode and clear the Indication hold.
Set key
Stand on the DF870 and press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
When the measured value is stable, the DF870 prints
the weight and tare.
Body Planner
To print the weight value automatically. * in Weight mode only
Select Weight mode and set the Indication hold.
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
After the indication is held, the DF870 prints the weight
and tare.
Body Planner
To turn off the power.
Power key
Press and hold .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
The screen goes out in a few seconds.

Chapter 3 How to use Body Composition mode
16
Chapter 3 How to use Body Composition mode
3-1. To get the correct measurement
results
The DF870 measures body composition such as fat and muscle by passing a weak electric current through
the body. The human body consists of lean body tissues (mainly muscles), which easily conduct electricity,
and fat tissues, which hardly conduct electricity. It means that people who are easy to conduct electricity have
more muscles and that people who are difficult to conduct electricity have more fats. This measure of low
and high electricity conductivity is called “impedance,” which is also affected by the change of water content
distribution and the change of blood circulation. Therefore, do not measure body composition under the
conditions where you cannot obtain the correct measurement results. You need to measure body composition
during the following optimal time period for measurement wherever possible.
Body Planner
Optimal time for
measurement
10 a.m. to 12 noon
Take off your socks when you measure.
Wipe your finger tips and the soles of your
feet with a wet towel.
Body Planner
You cannot get the correct measurement results
in the following cases:
Wait for about two hours before measurement.
Just after waking
up
Just after eating or
drinking
Just after
exercising
Just after taking a
bath or shower
If the person is a growing child, is pregnant, is a dialysis patient, has swelling, has a cold, or has an
extremely athletic figure, they may not get the correct results from the body composition
measurement.
(Attention) For medical and hospital personnel
The weights measured in Body Composition mode cannot be used for any certifications. If you wish to
enter a measured weight in a patient chart, measure it in Weight mode. Note also that, unless you are
using the DF870 designed for transactions or certifications, you cannot enter the measured weight in a
patient chart even when it is measured in Weight mode.

Chapter 3 How to use Body Composition mode
17
3-2. How to use Body Composition
mode
Prepare for measurement.
●Confirm that the system is running in Body
Composition mode.
●Take off your socks and stockings.
●Wipe your finger tips and the soles of your feet
with a wet towel.
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
* To change the mode, see page 12.
Input the tare for clothes.
(Example) If the clothes weigh 1.25kg:
Press the numeric keys 1 2 5 .
Tare k e y
Then press .
Measure your weight.
Input your height.
(Example) If you are 174.0cm tall:
Set key
Press 1 7 4 0 . Then press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Return key
Press to input your height again.

Chapter 3 How to use Body Composition mode
18
Input your waist size.
(Example) If your waist size is 72 cm:
Set key
Press 7 2 . Then press .
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
If you do not know your waist size, press 0 .
Input your age.
(Example) If you are 25 years old:
Set key
Press 2 5 . Then press .
Input your sex.
Set key
If you are a male, press 1 . Then press .
Set key
If you are a female, press 2 . Then press .
Check the information you
have input.
Set key
If the information is correct, press .
Return key
To make the settings again, press .

Chapter 3 How to use Body Composition mode
19
Place your heels on the back
electrodes.
Step on the platform so that your soles touch the front
electrodes and your heels touch the back electrodes.
Take out the stick.
(Attention) Ensure that the stick is facing the correct side.
(Front)
Put your fingers on the finger
electrodes and hold the stick.
Put your index and middle fingers on the upper electrodes,
put your thumbs on the lower electrodes, and hold the stick.
Straighten your back and
stretch your arms forward.
Straighten your back, and stretch your arms straight
forward at the level of your shoulders.
Fingers mark