Denso BHT-7500W Manual
Operator's Guide
This guide has been
prepared expressly for
the hands-on user.
Always keep it nearby
for speedy reference.
Related Publications
BHT-7500W User’s Manual (Contained in the Manual Pack CD)
Instructions for using the handy terminal (BHT-7500W) and optical com-
munication unit (CU-7000).
BHT-BASIC Programmer’s Manual (Contained in the BHT-BASIC Compiler CD
and Manual Pack CD)
Description for developing application programs of the handy terminal in
BHT-BASIC.
Transfer Utility Guide (that comes with Transfer Utility)
Description about software that transmits data and programs between the
handy terminal and computer.
Ir-Transfer Utility C Guide (that comes with Ir-Transfer Utility C)
Description about software that transmits data and programs between the
handy terminal and computer via the optical communication unit (CU).
Ir-Transfer Utility E Guide (that comes with Ir-Transfer Utility E)
Description about software that transmits data and programs between the
handy terminal and computer via the computer’s integrated IR port or any
of the specified external IR transceivers.
SAFETY PRECAUTIONS
Be sure to observe all these safety precautions.
Strict observance of these warning and caution indications are a MUST for
preventing accidents which could result in bodily injury and substantial prop-
erty damage. Make sure you fully understand all definitions of these terms
and related symbols given below, before you proceed on to the text itself.
Alerts you to those conditions which could cause
serious bodily injury or death if the instructions
are not followed correctly.
WARNING
CAUTION Alerts you to those conditions which could cause
minor bodily injury or substantial property dam-
age if the instructions are not followed correctly.
Meaning of Symbols
A triangle ( ) with a picture inside alerts you to a warning of dan-
ger. Here you see the warning for electrical shock.
A diagonal line through a circle ( ) alerts you to something you
should not do; it may or may not have a picture inside. Here you
see a screwdriver inside the circle, meaning that you should not dis-
assemble.
A black circle ( ) with a picture inside alerts you to something you
MUST do. This example shows that you MUST unplug the power
cord.
WARNING
Handling the rechargeable battery
cartridge
•Never disassemble or heat the re-
chargeable battery cartridge, nor put
it into fire or water; doing so could
cause battery-rupture or leakage of
battery fluid, resulting in a fire or
bodily injury.
Never
put me
into fire!
WARNING
Do not
short-
circuit me!
Charge only
with the
dedicated
device.
Undedicated
•Do not carry or store the recharge-
able battery cartridge together with
metallic ball-point pens, necklaces,
coins, hairpins, etc.
Doing so could short-circuit the ter-
minal pins, causing the batteries to
rupture or the battery fluid to leak,
resulting in a fire or bodily injury.
•Avoid dropping the rechargeable battery cartridge or letting it
undergo any shock or impact.
Doing so could cause the batteries to break, generate heat, rup-
ture or burn.
•Only use the dedicated charger (CU-
7001, C-700 or C-750) for charging
the battery cartridge.
Using a different type of charger
could cause battery-rupture or leak-
age of battery fluid and result in a
fire, bodily injury, or serious damage
to property.
•Never charge the rechargeable battery cartridge where any in-
flammable gases may be emitted; doing so could cause fire.
Handling the BHT
•The BHT-7500W uses a laser light for scanning bar codes. The
intensity of the laser light might be too low to inflict bodily in-
jury. However, do not look into the laser beam.
The BHT-7500W complies with Laser Safety Standard, Class II
of 21 CFR Chapter 1, Subchapter J.
The BHT-7500W does not mount beam attenuator and laser ra-
diation emission indicator required by this standard. Instead,
the software-controlled Magic keys (see “Components and
Functions”) function as them because the laser light is not en-
abled without the Magic keys pressed.
AVOIDEXPOSURE-LASERLIGHTISEMITTEDFROMTHISAPERTURE
LASERLIGHT-DONOTSTAREINTOBEAM
1mWMAXIMUMOUTPUT;650nmLASER
CLASSIILASERPRODUCT
THISDEVICECOMPLIESWITH21CFRCHAPTER1,SUBCHAPTERJ.
CAUTION
CAUTION
Refrigeration
Hot-
house
This
humidity
is killing
me!
Refrigeration
Refrigeration
I'm
freezing!
I'm burning
up!
Handling the BHT
•Never put the BHT in places where
there are excessively high tempera-
tures, such as inside closed-up auto-
mobiles, or in places exposed to di-
rect sunlight.
Doing so could affect the housing or
parts, resulting in a fire.
•Avoid using the BHT in extremely
humid or dusty areas, or where there
are drastic temperature changes.
Moisture or dust will get into the
BHT, resulting in malfunction, fire or
electrical shock.
Handling the rechargeable battery cartridge
•Never charge a wet or damp rechargeable battery cartridge.
Doing so could cause the batteries to break, generate heat, rup-
ture or burn.
•Do not look into the laser beam through the reading window or point
the laser beam towards the eyes.
The laser beam emitted through the reading window is harmful to the
eyes.
•Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
CAUTION
Do not
drop me!
Keep me
away from
water!
•If foreign material or water gets into
the BHT, immediately turn off the
power, pull out the rechargeable bat-
tery cartridge, and contact your near-
est dealer.
Failure to do so could cause smoke
or fire.
•If you drop the BHT so as to damage
its housing, immediately turn off the
power, pull out the rechargeable bat-
tery cartridge, and contact your near-
est dealer.
Failure to do so could cause smoke
or fire.
•Never disassemble or modify the BHT; doing so could result in
an accident such as break or fire.
•If smoke, abnormal odors or noises come from the BHT, imme-
diately turn off the power, pull out the rechargeable battery car-
tridge, and contact your nearest dealer.
Failure to do so could cause smoke or fire.
•In environments where static electricity can build into signifi-
cant charges (e.g., if you wipe off the plastic plate with a dry
cloth), do not operate the BHT. Doing so will result in malfunc-
tion or machine failure.
Never
disassemble
•Do not use batteries or power sources other than the specified
ones; doing so could generate heat or cause malfunction.
Components and Functions
Indicator LED
Illuminates in green when the BHT has
successfully read the bar code.
Liquid crystal display (LCD)
Shows the characters and
graphic patterns.
Trigger switch (M3 key)*
Press this switch to start
bar-code reading.
Optical interface port
Used to exchange data/
programs with the host
computer via its integrated IR
port or via the optical
communication unit CU-7000.
Connector cover
Inside this cover is the
direct-connect interface
port.
Hand strap
Be sure to put your hand
through this strap to
prevent you from dropping
the BHT accidentally.
Alphanumeric
keys
Trigger switch (M4 key)*
Press this switch to start
bar-code reading.
Release button
Press this button to remove the rechargeable battery
cartridge.
Rechargeable
battery cartridge
Main power
source of the
BHT.
Bar-code reading window
Built-in antenna
Do not cover this
antenna section with
metal-evaporated tape
or by hand. Doing so
may result in
communications failure.
* The tirgger switch function is assigned to both of the M3 and M4 keys by default.
The functions of the keys may be set by user programs. Shown below is a set
of sample functions.
Function keys
Used for choosing
functions.
M1/M2 (Magic) keys
Used as any of the
trigger switch (default),
ENT key, SF key, and
backlight function on/off
key depending upon
definition in System
Mode or in user pro-
grams. These keys can
be also assigned string
data.
PW (Power) key
Turns the BHT on or off.
Numerical keys
Used for numerical
input.
ENT (Enter) key
Finalizes the inputted
data or operations, and
starts the corresponding
processing.
ALP (Alphabet) key
Switches the keypad to
alphabet entry.
SF (Shift) key
Used in combination
with numerical keys for
special input proce-
dures.
C (Clear) key
Clears the last inputted
data or returns to the
original screen. If pressed
together with SF key,
this C key works as a
backspace key.
Cursor keys
Used to move up to the
preceding line, down to the
next line, to the preceding
character, and to the next
character.
About Status Indicators
Battery voltage level
Shows the current battery voltage
level.
If the voltage level is high, three bars ap-
pear; if low, a single bar appears.
The displayed battery level shows
the terminal voltage of the battery
cartridge, not how much power is
left.
The battery voltage level varies
depending upon the operation of the
BHT, so the displayed level also may
vary .
Keypad shift state
SF Shows a bar when the keypad is
shifted.
Alphabet input
ALP Shows a bar when the alphabet in-
put function is activated.
Connection state in radio commu-
nication
Shows a bar when the BHT is syn-
chronized with an access point.
Connection
state in radio
communication
Status Indicators
Reading Bar Codes
•If the BHT fails to read due to specular effects
or other factors, change the scanning angle of
the reading window or the distance from codes
as shown at right, and try it again. (Specular ef-
fects occur when the reflection of the light from
the bar code becomes excessively strong. This
can easily happen when the reflecting surface is
polished or covered with vinyl.)
•Keep the BHT at a distance from a target bar code so that the bar code
comes within approx. 90% of the laser scanning range (line length).
•The BHT can read bar codes at a maximum distance of 56 cm (22.0")**
from the bar-code reading window.
**Under the following conditions:
-Ambient illuminance: 500 x(Xenon lamp)
-Code 39
-Reflection intensity: 85% min. for white and 5% max. for black
-Minimum narrow bar width: 1.4 mm min. (55.1 mils min.)
•The bar code reading procedure may differ depending upon the applica-
tion used, so follow the application's manual.
Turn on the BHT power, bring the bar-code reading window to the bar code to
be scanned, and press the trigger switch. The BHT emits a laser light to scan
the bar code.
When the BHT has read the bar code successfully, the indicator LED will illu-
minate in green.
*The trigger switch function is
assigned to both of the M3 and
M4 keys by default.
Bar code scanning
range covered by
the laser light
Trigger switch
(M3 key)* PW key
Trigger switch
(M4 key)*
Indicator LED
Max. 56 cm
(22.0")**
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