JRC JHS-431 User manual

INTRINSICALLY SAFEINTRINSICALLY SAFE
UHF TRANSCEIVERUHF TRANSCEIVER
INSTRUCTIONINSTRUCTION
MANUALMANUAL
01ETM ISO 9001, ISO 14001 Certified
Printed in Japan
Marine Service Department
[phone]
[phone]
[email protected]
Telephone :
Facsimile :
e-mail :
AMSTERDAM Branch
Telephone :
Facsimile :
e-mail :
[phone]
[phone]
[email protected]
SEATTLE Branch
Telephone :
Facsimile :
e-mail :
[phone]
[phone]
[email protected]
CODE No.7ZPJD0566CODE No.7ZPJD0566
JUN. 2013 Edition 1 JRCJUN. 2013 Edition 1 JRC
Not use the asbestos
For further information,contact:
URL http://www.jrc.co.jp
JHS-431JHS-431

i
INTRINSIC SAFETY
Versions of the JHS-431 which display the “EX” marking on the serial
number seal.
The approval rating for these models are II2G Ex ib IIA T3 Gb and II 2D Ex
tb IIIC T160°C Db IP67.
WARNING! NEVER charge the BP-227AXD (with/without the transceiver) in an
explosive atmosphere. The optional battery chargers are not approved as Intrinsically
Safe.
When the transceiver is used in a hazardous area, the BP-227AXD MUST be
attached, either the jack cover or HM-138 MUST be attached to the speaker-
microphone connector.
KEEP the transceiver and the BP-227AXD clean to avoid any risk of ignition due to
the build-up of electrostatic charges.
Repair of JRC radios should only be carried out by authorized JRC distributors. In
particular, repair of ATEX approved radios can
ONLY be done by JRC to maintain the intrinsically safe rating. NEVER attempt to
repair an ATEX approved radio. Only JRC has
the repair expertise and procedures to maintain the ATEX approval.
Contact your JRC distributor or authorised dealer for details.
The equipment can be used without the microphone but with the jack cover.
7ZPJD0566

ii
The ATEX standard is described on the 94/9/EC sticker (Ex Marking) and BP-227AXD as below.
zDO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT.
zDO NOT CHARGE THE BATTERY IN HAZARDOUS LOCATION.
*The following illustrations show
the JHS-431.

iii
Preface
Thank you for purchasing the JRC intrinsically safe UHF transceiver JHS-431.The JHS-431 is an
intrinsically safe on-board vessels communication transceiver of 400 MHz band 2-watt output. It
is suitable for inboard, ship-to-ship, ship-to-shore, and pier-to-pier telecommunications in moving
a ship, loading or unloading, life saving, going alongside the pier, mooring, and so on.

iv
Before Operation
Concerning the symbols
This manual uses the following symbols to explain correct operation and to prevent injury or
damage to property.
The symbols and descriptions are as follows. Understand them before proceeding with this
manual.
DANGER
This safety reminder is given to items that are potentially dangerous to life. If
these items are done improperly, you will be seriously injured and in extreme
cases, you will be put to death.
WARNING
This safety reminder is given to items that are potentially dangerous to your
body. If these items are done improperly, you may be injured and in extreme
cases, you may be put to death.
CAUTION
This safety reminder is given to items that are potentially dangerous to your
body or property. If these items are done improperly, you will be injured and
property will be damaged.
Examples of symbols
This triangle mark contains an item you must pay attention to(caution, warning
or danger). This example tells "Be careful not to get an electric shock."
This mark contains an item you must not do and has an explanation under it.
This example tells "Never disassemble."
This mark contains an item you must do. This example tells
"Disconnect the power plug from the outlet."
Electric shocks
No
disassemble Prohibit
Pull plug out Instruction
Prohibit

v
SAFETY TRAINING INFORMATION
CAUTION
WARNING
Your radio generates RF electromagnetic energy during transmit mode. This
radio is designed for and classified as "Occupational Use Only", meaning it
must be used only during the course of employment by individuals aware of
the hazards, and the ways to minimize such hazards. This radio is NOT
intended for use by the "General Population" in an uncontrolled environment.
Electromagnetic Interference/Compatibility
During transmissions, your radio generates RF energy that can possibly
cause interference with other devices or systems. To avoid such interference,
turn off the radio in areas where signs are posted to do so.
DO NOT operate the transmitter in areas that are sensitive to electromagnetic
radiation such as hospitals, aircraft, and blasting sites.
Occupational/Controlled Use
The radio transmitter is used in situations in which persons are exposed as consequence of their
employment provided those persons are fully aware of the potential for exposure and can exercise control
over their exposure.

vi
Foreword
READ ALL INSTRUCTIONS carefully and completely before using the transceiver.
SAVE THIS INSTRUCTION MANUAL-This instruction manual contains important operating
instructions for the JHS-431 UHF TRANSCEIVER.
Explicit Definition
Word Definition
WARNING:Personal injury, fire hazard or electric shock may occur.
CAUTION:Equipment damage may occur.
NOTE:If disregarded, inconvenience only. No risk of personal injury, fire or electric shock.
Operating Notes
zWhen transmitting with a portable radio, hold the radio in a vertical position with its
microphone 5 to 10 centimeters (2 to 4 inches) away from your mouth. Keep the antenna at
least 2.5 centimeters (1 inch) from your head and body.
zIf you wear a portable two-way radio on your body, ensure that the antenna is at least 2.5
centimeters (1 inch) from your body when transmitting.
Precaution
WARNING! NEVER hold the transceiver so that the antenna is very close to, or touching exposed
parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if
the microphone is 5 to 10 cm (2 to 4 inches) away from the lips and the transceiver is vertical.
WARNING! NEVER operate the transceiver with audio accessories at high volume levels.
CAUTION! NEVER short the terminals of the battery pack.
NEVER connect the transceiver to a power source other than the BP-227AXD. Such a connection will
ruin the transceiver.
DO NOT push the PTT when not actually desiring to transmit.
AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below -20°C (-
4°F) or above +60°C (+140°F).
DO NOT modify the transceiver for any reason.
MAKE SURE the flexible antenna and battery pack are securely attached to the transceiver, and that
the antenna and battery pack are dry before attachment. Exposing the inside of the transceiver to
water will result in serious damage to the transceiver. The use of non-BP-227AXD battery
packs/chargers may impair transceiver performance and invalidate the warranty.

vii
Handling precaution
DANGER
The NZB-139/NZB-141/NZB-142 battery chargers are not intrinsically safe type. Do not
keep or use the NZB-139/NZB-141/NZB-142 in the presence of any explosive or
combustible gas (*1). It may cause an explosion or fire.
Only a few kinds of explosive gases and vapors are defined to be non-harmful to the
JHS-431. Do not use the JHS-431 in the presence of any other explosive or
combustible gas. It may cause an explosion or fire.
Always use the dedicated battery pack (BP-227AXD) of the JHS-431. When other
battery pack is used, it may cause an explosion or fire.
Never disassemble, remodel, or repair the JHS-431 and its components. It may cause
a fire or failure. Particularly, disassembling in the presence of any explosive or
combustible gas may cause an explosion or fire.
Do not replace the battery pack in the presence of any explosive or combustible gas.
Replacing in such a hazardous area may cause an explosion or fire.
If the JHS-431 is dropped to the ground or damaged, send it to your local JRC distributor or
sales office for check and repairing. Do not use it in the presence of any explosive or
combustible gas. Using the broken product in a hazardous area may cause an explosion or
fire.

viii
WARNING
Do not put the battery pack in a microwave oven or in a high-pressure container.
The battery pack may leak its content, become hot, or explode.
If the content of the battery pack jumps into your eyes, do not rub. This risks
corneal damage. Try washing with running water. Then, consult your doctor.
Do not disassemble or remodel the battery pack. This may cause the battery
pack to explode, to overheat, ignite or to leak the harmful content (organic
solvent).
Do not solder wires directly to the charging and output terminals of the battery
pack. This may cause the battery pack to explode, to overheat, ignite or to
leak the harmful content (organic solvent).
Do not short-connect the charging terminals of the charger. The short-connected
terminals will cause a fire or failure.
When finding the charger troubled, pull out the plug from the outlet, then call
your local JRC distributor or sales office. Never use the disabled charger. It
may cause a fire or give you electric shocks.
Do not throw the battery pack into fire. Fire and heat may cause the battery
pack to explode, to overheat, ignite or to leak the harmful content (organic
solvent).

ix
CAUTION
Always use the dedicated battery pack (BP-227AXD) of the JHS-431. When
other battery pack is used, the performance and operation of the JHS-431 will
not be assured.
Charge the battery pack in the ambient temperature range of 10°C to 40°C.
Never charge when the temperature is below 0°C. A gas generated in the
battery will cause the safety valve to actuate and shorten the battery life.
Further, it causes the protective circuit of the charger to work and disables the
charger to charge.
For installation, checking, maintenance, and repairing of the product, call your
local JRC distributor or sales office. Servicing by unauthorized personnel results
in malfunction or failure of the product.
Always follow the instructions in this manual.
By wrong and improper handling, you cannot enjoy the performance of the JHS-431.
Always use the dedicated charger (NZB-139/NZB-141/NZB-142) to charge the
battery pack.
Be sure to turn off the power switch of the JHS-431 to save the battery power
and have a longer battery life.

Contents
Preface ............................................................................ iii
Before operation ............................................................. iv
Handling precaution ....................................................... vii
1 General .................................................................... 1
2 Features .................................................................... 1
3 Composition ............................................................... 2
3.1 Standard composition .................................................................................................. 2
3.2 Options ........................................................................................................................ 2
4 Accessories ................................................................ 2
4.1 Accessory attachments ............................................................................................... 2
5 Panel Description ...................................................... 4
5.1 Front, top and side panels ........................................................................................... 4
5.2 Function display ........................................................................................................... 4
5.3 Function keys .............................................................................................................. 5
6 Battery Charging ........................................................ 6
6.1 Battery charging .......................................................................................................... 6
6.2 Optional battery chargers ............................................................................................ 7
7 Speaker/Microphone ................................................... 8
7.1 Optional HM-138 description ....................................................................................... 8
7.2 Attachment .................................................................................................................. 8
8 ATEX CAUTIONS ......................................................... 9
8.1 Special conditions for safe use .................................................................................... 9
8.2 Meaning of ATEX marking codes ................................................................................ 9
9 Maintenance ............................................................... 11
9.1 Daily Maintenance ....................................................................................................... 11
9.2 Regular Inspection ......................................................................................................... 11

10 After-Sale Services .................................................... 12
10.1 Repair during the warranty period ............................................................................... 12
10.2 Repair after the warranty period .................................................................................. 12
10.3 Items to be informed .................................................................................................... 12
11 Specifications ............................................................ 13
11.1 General ........................................................................................................................ 13
11.2 Transmitter ................................................................................................................... 13
11.3 Receiver ....................................................................................................................... 13
11.4 Tone Squelch ............................................................................................................... 14

- 1 -
1 General
The JHS-431 is an intrinsically safe 400 MHz band UHF 2-watt output maritime transceiver. It is
suitable for inboard, ship-to-ship, ship-to-shore, and pier-to-pier telecommunications in moving a
ship, loading or unloading, life saving, going alongside the pier, mooring, and so on.
2 Features
The JHS-431 offers a compact waterproof package that is easy to use. This radio keeps you in
contact in nearly any environment.
zJIS Grade 7 Waterproof protection
The gasket sealed waterproof housing provides superior waterproof protection, equivalent to
JIS Grade 7*.
* Equivalent to IPX7 of corresponding international standard IEC 529 (1989). 1m depth for
30 minutes.
zBuilt-in Tone Squelch
Use the built-in CTCSS capability to set up your own talk groups and quiet stand-by when
others are talking.
zIntrinsically Safe
Intrinsically safe approved by the FM Global Technologies LLC, is suitable for use in
hazardous areas where flammable gasses or liquids are used. See specification page for
applied classes.
zLi-Ion battery pack
The large capacity 1700mAh Lithium-Ion(Li-Ion) battery pack, BP-227AXD provides a
practical 10 hours* of operating time. Li-Ion batteries allow flexible charging and have almost
no memory effect.
* Typical operation Tx:Rx:Stand-by = 1:1:18
zCompact body
56(W)x97(H)x36.4(D)mm compact body with durable, dependable construction, meets MIL
standard specifications.
zOther features
Built-in audio compander Powerful 2W output 2 step power saver
DANGER
Only a few kinds of explosive gases and vapors are defined to be non-harmful to the
JHS-431. Do not use the JHS-431 in the presence of any other explosive or combustible
gas. It may cause an explosion or fire.

- 2 -
3 Composition
3.1 Standard composition
No. Item Model Qty Notes
1 Transceiver JHS-431 1
2 Antenna FA-S27U 1 Whip antenna
3 Battery pack BP-227AXD 1 Li-Ion battery (nominal 7.4V,1850mAH)
4 Belt clip MB-79 1
5 Carrying strap MB-80 1
6 Instruction manual 7ZPJD0566 1 English
7 Instruction manual A-6955H-1EU 1 A6 size English For reference
8 Inspection data 1
3.2 Options
No. Product Name Model Notes
1 External speaker / Microphone HM-138 Water-proof type
2 Carrying case MPXP33443A Genuine leather
3 Spare battery pack BP-227AXD Li-Ion battery (nominal 7.4V,1850mAH)
4 Spare antenna FA-S27U Whip antenna
5 Battery Charger NZB-139 Desktop mount, 100V-240V AC, 30VA
6 Multi Battery Charger NZB-141 Wall mount, 100V-240V AC, 100VA
(up to 6 pcs)
7 Multi Battery Charger NZB-142 Desktop mount, 100V-240V AC, 100VA
(up to 6 pcs)
8 Antenna NAU-6
For non-powered antenna system
(for both indoor and outdoor use, with
an N connector)
9 Antenna NAU-3C For non-powered antenna system
(for indoor use, with an BNC connector)
4 Accessories
4.1 Accessory attachment
Whip antenna
Connect the supplied whip antenna to the antenna connector.
CAUTION!
NEVER HOLD by the antenna when carrying the transceiver.
Transmitting without an antenna may damage the transceiver.

- 3 -
Battery pack
To attach the battery pack:
Slide the battery pack on the back of the transceiver in the direction of the arrow (○
1), then lock it
with the battery release button.
Slide the battery pack until the battery release button makes a 'click' sound.
To release the battery pack:
Push the battery release button in the direction of the arrow
(○
2) as shown right. The battery pack is then released.
NEVER release or attach the battery pack in a hazardous
area. This may result cause an explosion or fire.
NEVER release or attach the battery pack when the transceiver
is wet or soiled. This may result water or dust getting into the
transceiver/battery pack and may result in the transceiver being damaged.
Jack cover
Attach the jack cover when the optional speaker-microphone is not used.
To attach the jack cover: To detach the jack cover:
○
1Insert the jack cover
into the [SP MIC] ○
3Unscrew the screw
connector. with a phillips
screwdriver.
○
2Tighten the screw. ○ 4Detac h the jack
coverforthe
speaker/microphone
connection.
Belt clip
Attach the belt clip to the back
of the transceiver with the
supplied screws.
Carrying strap
Attach the Carrying strap to the back of the transceiver with
the supplied screws.
①
②
電池パック
電池パック取り外しボタン
Battery pack
Battery release button
①
②
③
④
付属
ビ
ス
MB-79
Supplied screws
NOTE:
In replacing a battery pack.
Belt clip and carrying strap are
removed from and old battery
pack, and please reattach to a
new battery pack. Neither belt
clip nor carrying strap is
attached to a new battery
pack.

- 4 -
5 Panel Description
5.1 Front, top and side panels
○
5 FUNCTION KEYS
[P0] to [P3] (See P.6 for details)
○
6 CH UP AND DOWN KEYS /
During standby condition, push to
select an operating channel.
○
7 TRANSMIT/BUSY INDICATOR
Lights red while transmitting; lights green
while receiving a signal, or when the squelch
is open.
○
8 PTT SWITCH [PTT]
Push and hold to transmit; release to receive.
5.2 Function display
①
②
③
④
⑤
⑥
⑧
⑦
マイク
表示部
スピーカ
Speake
r
Microphone
Function display
(See the following NOTE.)
○
1VOLUME CONTROL [VOL]
Turns power ON and adjusts the
audio level.
○
2RED BUTTON [RED]
Monitor (See P.5 for details)
○
3ANTENNA CONNECTOR
Connects the supplied antenna.
○
4SPEAKER-MICROPHONE CONNECTOR [SP MIC]
Connects the optional speaker-microphone.(p.8)
[SP MIC] jack cover
NOTE: KEEP the [SP MIC]
j
ack cover attached to the
transceiver when the
speaker/microphone is not
used. (See p.3 for details)
NOTE:
If the speaker netting (for dust proofing)
becomes wet, dry it with a hair drier
(cool mode) etc. before operating the
transceiver. Otherwise the audio may
be difficult to hear for loss of the sound
pressure.
③④
⑤
②①
○
1OUTPUT POWER INDICATOR
Appears when Low 2 or Low 1 is selected.
○
2AUDIBLE INDICATOR
Appears when "Tone SQL" is released.
○
3KEY LOCK INDICATOR
Appears during the key lock function ON.
○
4BATTERY INDICATOR
Appears or blinks when the battery power decreases to a specified level.
○
5ALPHANUMERIC DISPLAY
Displays the operating channel number, tone squelch number, set mode contents, etc.

- 5 -
5.3 Function keys
The following functions can be assigned to [P0], [P1], [P2], [P3],[RED], and function keys.
If the function names are bracketed in the following explanations, the specific switch used to
activate the function depends on programming.
[P0] Key - MONITOR - also [RED BUTTON]
While in the standby condition and while pushing and
holding [P0] key,TSQL and SQL are released.
(OFF Position) (Sp mark appears and lights green LED)
After release [P0] key, only SQL is set.
Push [P0] key momentarily to set TSQL and SQL.
[RED] button on the top of the transceiver has the same
function as [P0] key.
[P1] Key - OUTPUT POWER SELECTION -
While in the standby condition, push [P1] key to select
output power in rotation as the diagram.
[P2] Key - SET MODE -
While in the standby condition, push and hold [P2] key to enter user set mode.
Push [P2] key momentarily to select the item.
Then push [ ] and [ ] to set the desired level / condition.
Available set mode functions:
zBacklight : ON, Automatic or OFF
zBeep : ON or OFF
zSQL Level : 0 to 255
zAF Min level : ON or OFF
zBattery Voltage : ON or OFF
Push and hold [P2] again to exit set mode.
Set Mode
LIGHT
BEEP
SQ
AFMIN
BATT
[P3] Key - LOCK -
While in the standby condition, push and hold [P3] key to lock the keyboards.(Appears key
mark.)
Push and hold [P3] again to exit key lock mode. (Disappears key mark.)
CH UP AND DOWN KEYS
Push this key to select the desired CH or items upward.
Push this key to select the desired CH or items downward.
P 0
P 1 P 3 P 2
2W 0.2W(LOW1) 0.2W(LOW2)
LIGT ON
LIGT AUT
LIGT OFF
BEEP ON
BEEP OFF
SQL 255
SQL 0
A
FMINON
A
FMINOFF
BATT ON
BATT OFF
Normally light On
A
utomatically light On/Of
f
Normally light Off
Normally beep On
Normally beep Off
Use for strong signal
Use for weak signal
Volume is remained when set the volume
knob to the minimum
Sound level follows volume knob
When turn on the power SW, the battery
voltage appears in the display
No battery voltage display

- 6 -
6 Battery Charging
6.1 Battery charging
NEVER incinerate used battery packs. Internal battery gas may cause an explosion.
NEVER immerse the battery pack in water. If the battery pack becomes wet, be sure to wipe it
dry immediately (particularly the battery terminals) BEFORE attaching it to the transceiver.
Otherwise, the terminalswill become corroded, or cause connection failure,etc.
AVOID leaving the battery pack in a fully charged, or completely discharged condition for long
time. It causes shorter battery life. In case of leaving the battery pack unused for a long time, it
must be kept safely after discharge, or use the battery until the battery indicator appears, then
remove it from the transceiver. If your battery pack seems to have no capacity even after being
charged, fully charge the battery pack again. If the battery pack still does not retain a charge (or
very little), a new battery pack must be purchased.
Prior to using the transceiver for the first
time, the battery pack must be fully charged
for optimum life and operation.
CAUTION!
To avoid damage to the transceiver, turn it
OFF while charging.
○
1Recommended temperature range for
charging:
Recommended temperature range for
charging:+0°C to +40°C (+32°F to+104°F)
The Li-Ion battery functions within -20°C
to +60°C (-4°F to +140°F).
○
2Use the specified chargers
(NZB-139, NZB-141 and NZB-142).
○
3NEVER use another manufacturer's
charger.
○
4NEVER use another manufacturer's AC
adapter.
Recommendation:Charge the supplied
battery pack for a maximum of up to 10
hours. Li-Ion batteries are different from Ni-
Cd batteries in that it is not necessary to
completely charge and discharge them to
prolong the battery life. Therefore, charging
the battery in intervals, and not for extended
periods is recommended.
CAUTION!
NEVER insert battery pack/transceiver (with
the battery pack attached) with wet or soiled
into the charger.This may result in corrosion
of the charger terminals or damage to the
charger. The charger is not waterproof and
water can easily get into it.
A
fter use is to recycling.
In order to reuse a rare metal and to maintain earth environment. The battery
which became unnecessary is not discarded. Please bring to a charge type
battery recycling cooperation store.

- 7 -
6.2 Optional battery chargers
○
1 Rapid charging with the NZB-139
○
2 Rapid charging with the NZB-141/NZB-142
Charging indicator
zLights orange while charging
zLights green when charging is completed
zBlinks orange or green, or does not light when a problems is detected
JHS-431
BP-227AXD
BP-227AXD JHS-431 The optional NZB-139 provides rapid charging
of battery pack or JHS-431(with the battery
pack attached).
Charging time: approx. 2 to 2.5 hours
The optional NZB-141/NZB-142 allow up to
6 battery packs or JHS-431(with the battery
pack attached) to be charged simultaneously.
Charging time: approx. 2 to 2.5 hours
SOLUTIONS:
zRemove the battery pack, and reinsert it.
zRemove the battery pack, clean the battery terminals, then reinsert it.
zIf the battery pack temperature is high, remove and let it cool down, then reinsert it.
If you are unable to solve the problem through the use of these solutions, the battery pack
or the charger may be damaged, or the battery life may be over. In that case, contact you
r
nearest JRC Dealer or Service Center.