JRC JHS-431 Instruction Manual

INTRINSICALLY SAFEINTRINSICALLY SAFE

UHF TRANSCEIVERUHF TRANSCEIVER

INSTRUCTIONINSTRUCTION

MANUALMANUAL

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 speaker­microphone 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.

z DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT.

z DO 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

WAR NING

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

z When 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.

z If 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.

z JIS 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.

z Built-in Tone Squelch

Use the built-in CTCSS capability to set up your own talk groups and quiet stand-by when

others are talking.

z Intrinsically 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.

z Li-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

z Compact body

56(W)x97(H)x36.4(D)mm compact body with durable, dependable construction, meets MIL

standard specifications.

z Other 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:

○

1 Insert the jack cover

into the [SP MIC]

○

3 Unscrew the screw

connector. with a phillips

screwdriver.

○

2 Tighten the screw.

○

4 Detac h the jack

cover for the
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.)

○

1 VOLUME CONTROL [VOL]

Turns power ON and adjusts the
audio level.

○

2 RED BUTTON [RED]

Monitor (See P.5 for details)

○

3 ANTENNA CONNECTOR

Connects the supplied antenna.

○

4 SPEAKER-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.

③

④

⑤

②①

○

1 OUTPUT POWER INDICATOR

Appears when Low 2 or Low 1 is selected.

○

2 AUDIBLE INDICATOR

Appears when "Tone SQL" is released.

○

3 KEY LOCK INDICATOR

Appears during the key lock function ON.

○

4 BATTERY INDICATOR

Appears or blinks when the battery power decreases to a specified level.

○

5 ALPHANUMERIC 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:

z Backlight : ON, Automatic or OFF
z Beep : ON or OFF
z SQL Level : 0 to 255
z AF Min level : ON or OFF
z Battery 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/Off
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.

AVOI D 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.

○

1 Recommended 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).

○

2 Use the specified chargers

(NZB-139, NZB-141 and NZB-142).

○

3 NEVER use another manufacturer's

charger.

○

4 NEVER 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 Ni­Cd 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

z Lights orange while charging
z Lights green when charging is completed
z Blinks 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:

z Remove the battery pack, and reinsert it.
z Remove the battery pack, clean the battery terminals, then reinsert it.
z If 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.

- 8 -

7 Speaker/Microphone

7.1 Optional HM-138 description

7.2 Attachment

Attach the connector of the speaker/microphone into the [SP MIC] connector on the transceiver
and tighten the screw.

CAUTION: For ATEX compliance in hazardous areas, the jackcover just also be attached when
the HM-138 is not being used.

NEVER immerse the connector in water. If the
connector becomes wet, be sure to dry it
BEFORE attaching it to the transceiver.

NOTE: The microphone is located at the top
of the speaker/microphone, as shown in the
diagram left. To maximize the readability of
your transmitted signal (voice), hold the
microphone approx. 5 to 10 cm (2 to 4 inches)
from your mouth, and speak in a normal voice
level.

CAUTION: Attach the speaker/
microphone's connector securely
to prevent accidental dropping, or
water intrusion in the connector.

IMPORTANT: KEEP the [SP MIC] jack cover
attached (transceiver) when the
speaker/microphone is not in use. Water will
not get into the transceiver even if the cover is
not attached, however, the terminals (pins) will
become rusty, or the transceiver will function
abnormally if the connector becomes wet.

- 9 -

8 ATEX CAUTIONS

8.1 Special conditions for safe use

The equipment is an intrinsically safe equipment. It can be used in a potentially explosive
atmosphere.
The equipment must be powered only by the battery JRC type BP-227AXD.
When the transceiver is used in a hazardous areas, either the jack cover or HM-138 must be
attached to the connector. Failure to do this will make the radio ATEX non-compliant and may
result in an accident during use in hazardous areas.
The battery shall be charged only in non hazardous areas.
Ambient operating temperature: –20

°C to +55°C

8.2 Meaning of ATEX marking codes

Ambient temperature

CE conformity
marking

Identification number of notified
body (where appropriate)
(LCIE: 0081)

Equipment category:
1 (for Zone 0 or 20), 2 (for Zone 1 or 21),
3 (for Zone 2 or 22)

Type of Explosive atmosphere:
G (for gas, vapors and mist), D (for dusts)

Equipment group: I(for mines), II(for other than mines)

Intrinsic safety
according EN60079-0

Gas Group (see Fig. 1)

Gas/Equipment
Protection Level (EPL)

Explosion
protection marking

Equipment conforms to types of
protection standardized by CENELEC
(European standards)

Marking temperatures (see Fig. 1)

Dust Group

Dust/Equipment
Protection Level (EPL)

Intrinsic safety
according
EN60079-0
EN60079-31

Protection
by enclosures

Max surface
temperature

IP Code

- 10 -

(Fig.1)

T6: 85°C

—

—

—

—

—

—

—

—

—

—

—

—

Ethyl nitrate

T5: 100°C

—

—

—

—

—

—

—

—

—

—

—

—

Carbon
disulphide

T4: 135°C

—

Acetalde hyde

Ethyl ether

—

—

—

—

—

—

—

—

—

—

T3: 200°C

—

Benzine

Diesel fuel

Aircraft fuel

Heating oil

n-hexane

—

—

—

—

—

—

—

T2: 300°C

—

Ethyl alcohol

I-amyl acetate

n-butane

n-butyl alcohol

—

—

—

—

—

—

Ethylene

Acetylene

T1: 450°C

Methane

Acetone

Ethane

Ethyl acetate

Ammonia

Benzene
(pure)

Acetic acid

Carbon
Monoxide

Methanol

Propane

Toluene

Town Gas
(Coal Gas)

Hydrogen

Max. Temperature

I

II A

II B

II C

Gas Group

- 11 -

9 Maintenance

9.1 Daily Maintenance

Daily checks and periodic maintenance are recommended for you to enjoy the long steady
performance of the JHS-431. Those may enable earlier detection of problems and prevent the
problems from propagating. Table 9-1 lists recommended checks.

Table 9-1

9.2 Regular Inspection

Perform one or more transmission tests every month and check the functions of the JHS-431.

Step Check point Description

1 Battery

Make sure the Battery indicator does not light or blink on the
display of the JHS-431. If the Battery indicator lights or blinks,
charge the battery.

2 PWR/VOL control

Turn the control and make sure that the JHS-431 is powered on
and off and that the voice volume varies smoothly.

3 P0 Key (Monitor)

Set this switch to the OFF position and make sure you hear
noises. (See P.6 for details)

4 Transmitter output

Make sure the Transmit indicator lights while the JHS-431 is
transmitting.

5

Transmitting
condition

Make sure your JHS-431 can normally talk to and hear from the
remote station.

6 Charging terminals

Make sure the charging terminals are clean. If not, wipe them
clean with soft cloth or the like.

If finding any transceiver problem, call your local JRC distributor or sales office.
Do not let any unqualified personnel disassemble and repair the JHS-431.
If done, the operation and the function of the JHS-431 will not be assured.

- 12 -

10 After-Sale Services

In the event of a failure of the product, first check your operation and battery.
If the failure cannot be removed, suspend using the product and call your local JRC distributor or
sales office.

10.1 Repair during the warranty period

If JRC inspection shows that the problem was caused by defective material or workmanship
within the limitations of the warranty, JRC will repair or replace the product free of charge.
Repairs made necessary by normal wear, abnormal use, fires or disasters, if they can be made,
will be charged at regular factory prices.

10.2 Repair after the warranty period

Repairs of the product outside the warranty period, if they can be made, will be charged at
regular factory prices.

10.3 Items to be informed

z Product name, Model name, Date of manufacture, and Serial number
z A written statement about the nature of the problem (in detail)
z Your name, address, and phone number.

Recommended inspection and maintenance

It usually happens that the performance of your product will be lower as time goes by although it
is dependent upon the conditions of use. We recommend it to be overhauled by the JRC qualified
personnel (charged). For more information, call your local JRC distributor or sales office.

- 13 -

11 Specifications

11.1 General

Intrinsically safe:
ATEX Directive 94/9/EC
II2G Ex ib IIA T3 Gb
II2D Ex tb IIIC T160

°C Db IP67

Connected battery pack: BP-227AXD
Standard frequencies:
CH1 457.525MHz
CH2 457.550MHz
CH3 457.575MHz
Optional frequencies:
(CH4 467.525MHz)
(CH5 467.550MHz)
(CH6 467.575MHz)
Communication mode:
Simplex
Type of emission:
F3E(G3E)
Antenna:
Whip antenna, non-directional
(nominal 50

Ω unbalanced)

Power source:
Li-Ion battery (7.4V,1850mAH)
Consumption current:
Transmission: Approx. 1.1A
Reception: Approx. 300mA
Standby: Approx. 85mA
Operating temperature:

-20°C to +60°C

(-20°C

to +55°C for Intrinsically safe)

(+0°C

to +40°C for charging)

(Range of performance guarantee in
transceiver unit is +5°C

to +35°C)
Continuous service time:
Approx 10 hours
(*Typical operation
Tx:Rx: Standby =1:1:18)
Compass safe distance:

0.7 meter
Humidity:
+35

°C, 95% RH

Water-proof:
1 meter under the surface of water
for 30 min.
Dimensions:
56 mm(W)˜97 mm(H)˜36.4 mm(D)
(excluding projections)
Mass: Approx. 285 g
(including the battery pack)

11.2 Transmitter

Output power:
2 watt + 0%, -50%
(Low Power mode :
less than 0.2 watt)
Frequency accuracy:
Within ±5 x 10

-6

or less
Oscillator:
PLL frequency synthesizer
Modulation:
Variable reactance frequency
modulation Maximum frequency
Deviation:
Within ±5 kHz
Modulation frequency:
300 Hz to 3000 Hz
Spurious emission:

2.5 μW or less
Occupied frequency band width:
16 kHz or less
Total distortion and noise:

20 dB or more in standard modulation

Modulation input impedance:

2.2 kΩ
Standard modulation input level:
Approx. 15 mV

11.3 Receiver

Receiving system:
Double superheterodyne
Intermediate frequencies:
1st:46.35 MHz, 2nd: 450 kHz
Local oscillation frequency:
1st Lo Reception frequency

-46.35 MHz
2nd Lo: 45.9 MHz
Radiation:
2 nW or less
Local frequency stability:
Within ±5 x 10

-6

or less
Sensitivity:
8 dBμ(2.5μV) or less by 20dB NQS
Total distortion and noise:
20 dB or more
Demodulation Frequency:
300 Hz to 3000 Hz
Rated AF output:
Approx. 350 mW
Speaker impedance:
8 Ω

- 14 -

11.4 Tone Squelch

Tone frequency deviation: Standard ±0.5 kHz, Maximum ±0.9 kHz
Tone signal frequency error: ±0.5% or less
Tone signal rise time: Maximum 0.5 second or less
Tone signal distortion: 20 dB or more
Tone squelch open sensitivity: Receiver input voltage or less required to suppress
noises by 10 dB
Signal to noise ratio of received signal: 30 dB or more
Tone frequencies: See the table below. (max. 2 tones)

- 15 -

Attached Outline Drawings

JHS-431 UHF TRANSCEIVER

BP-227AXD BATTERY PACK

HM-138 EXTERNAL SPEAKER / MICROPHONE

MPXP33443A CARRYING CASE

NZB-139 BATTERY CHARGER (DESKTOP MOUNT TYPE)

NZB-141 CHARGER FOR 6 BATTERIES (WALL MOUNT TYPE)

NZB-142 CHARGER FOR 6 BATTERIES (DESKTOP MOUNT TYPE)

- 16 -

A

pprox.285g.

JHS-431
UHF TRANSCEIVER
OUTLINE DRAWING

- 17 -

BP-227AXD
BATTERY PACK
OUTLINE DRAWING

A

pprox.130g.

- 18 -

HM-138EXTERNAL
SPEAKER/MICROPHONE
OUTLINE DRAWING

A

pprox.150g.

- 19 -

Material: Leather

Mass: Approx. 20g

MPXP33443A
CARRYING CASE
OUTLINE DRAWING

- 20 -

Ｕｎｉｔ：ｍｍ

Ｃｏｌｏｒ：ＰＡＮＴＯＮＥ ４２５Ｃ（ＧＲＡＹ）

（ＤＥＳＫＴＯＰ ＭＯＵＮＴ ＴＹＰＥ）

ＯＵＴＬＩＮＥ ＤＲＡＷＩＮＧ

ＮＺＢ

－

１３９

ＢＡＴＴＥＲＹ ＣＨＡＲＧＥＲ

充電器収納架（卓上型）外形図

Ｍａｓｓ：ａｐｐｒｏｘ．１．５ｋｇ

- 21 -

６連充電器収納架（壁掛型）外形図

ＮＺＢ

－

１４１

ＣＨＡＲＧＥＲ ＦＯＲ ６ ＢＡＴＴＥＲＹＳ

（ＷＡＬＬ ＭＯＵＮＴ ＴＹＰＥ）

ＯＵＴＬＩＮＥ ＤＲＡＷＩＮＧ

Ｕｎｉｔ：ｍｍ

Ｍａｓｓ：ａｐｐｒｏｘ．４．０ｋｇ

Ｃｏｌｏｒ：ＰＡＮＴＯＮＥ ４２５Ｃ（ＧＲＡＹ）

- 22 -

Ｕｎｉｔ：ｍｍ

Ｃｏｌｏｒ：ＰＡＮＴＯＮＥ ４２５Ｃ（ＧＲＡＹ）

ＣＨＡＲＧＥＲ ＦＯＲ ６ Ｂ ＡＴＴＥＲＹＳ

ＯＵＴＬＩＮＥ ＤＲＡＷＩＮＧ

ＮＺＢ

－

１４２

（ＤＥＳＫＴＯＰ ＭＯＵＮＴ ＴＹＰＥ）

６連充電器収納架（卓上 型）外形図

Ｍａｓｓ：ａｐｐｒｏｘ．４．４ｋｇ

- 23 -

01ETM ISO 9001, ISO 14001 Certified

Printed in Japan

Marine Service Department

[phone]
[phone]
[e-mail]

Telephone :
Facsimile :
e-mail :

AMSTERDAM Branch

Telephone :
Facsimile :
e-mail :

[phone]
[phone]
[e-mail]

SEATTLE Branch

Telephone :
Facsimile :
e-mail :

[phone]
[phone]
[e-mail]

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