i-PRO WJ-HXE400 User manual

Before attempting to connect or operate this product,
please read these instructions carefully and save this manual for future use.
The model number is abbreviated in some descriptions in this manual.
Operating Instructions
Extension Unit
Model No. WJ-HXE400
WJ-HXE400/G
Extension Unit WJ-HXE400
123456789

2
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to
alert the user to the presence of uninsulat-
ed "dangerous voltage" within the prod-
uct's enclosure that may be of sufficient
magnitude to constitute a risk of electric
shock to persons.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
Before attempting to connect or operate this product, please
read the label on the bottom.
The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
Power disconnection. Unit with or without ON-OFF switches
have power supplied to the unit whenever the power cord is
inserted into the power source; however, the unit is opera-
tional only when the ON-OFF switch is in the ON position.
Unplug the power cord to disconnect the main power for all
units.
WARNING:
• This apparatus must be earthed.
• Apparatus shall be connected to a main socket outlet with a
protective earthing connection.
• The mains plug or an appliance coupler shall remain readily
operable.
• To prevent fire or electric shock hazard, do not expose this
apparatus to rain or moisture.
• The apparatus should not be exposed to dripping or splash-
ing and that no objects filled with liquids, such as vases,
should be placed on the apparatus.
• All work related to the installation of this product should be
made by qualified service personnel or system installers.
• For PERMANENTLY CONNECTED APPARATUS provided nei-
ther with an all-pole MAINS SWITCH nor an all-all pole circuit
breaker, the installation shall be carried out in accordance
with all applicable installation rules.
• The connections should comply with local electrical code.
CAN ICES-3(A)/NMB-3(A)
For Canada
The model number and serial number of this product may
be found on the surface of the unit.
You should note the model number and serial number of
this unit in the space provided and retain this book as a
permanent record of your purchase to aid identification in
the event of theft.
Model No.
Serial No.
For U.S.A.
NOTE: This equipment has been tested and found to com-
ply with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference
when the equipment is operated in a commercial environ-
ment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harm-
ful interference to radio communications.
Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be
required to correct the interference at his own expense.
FCC Caution: To assure continued compliance, (example -
use only shielded interface cables when connecting to
computer or peripheral devices). Any changes or modifi-
cations not expressly approved by the party responsible
for compliance could void the user's authority to operate
this equipment.
For U.S.A.
UL listed model No.:
WJ-HXE400
For U.S. and Canada:
WJ-HXE400
For Europe and other countries:
WJ-HXE400/G
Safety Information
In English: “The equipment must be connected to an earthed
mains socket-outlet”.
In Danish: “Apparatets stikprop skal tilsluttes en stikkontakt
med jord, som giver forbindelse til stikproppens jord”.
In Finnish: “Laite on liitettävä suojakoskettimilla varustettuun
pistorasiaan”.
In Norwegian: “Apparatet må tilkoples jordet stikkontakt”.
In Swedish: “Apparaten skall anslutas till jordat uttag”.
For Denmark, Finland, Norway, Sweden
: Alternating current symbol

3
FOR YOUR SAFETY PLEASE READ THE FOLLOWING TEXT
CAREFULLY.
This appliance is supplied with a moulded three pin mains plug for your
safety and convenience.
A 5 amp fuse is fitted in this plug.
Should the fuse need to be replaced please ensure that the replacement
fuse has a rating of 5 amp and that it is approved by ASTA or BSI to
BS1362.
Check for the ASTA mark or the BSI mark on the body of the
fuse.
If the plug contains a removable fuse cover you must ensure that it is
refitted when the fuse is replaced.
If you lose the fuse cover the plug must not be used until a replacement
cover is obtained.
A replacement fuse cover can be purchased from our dealer.
IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR THE
SOCKET OUTLET IN YOUR HOME THEN THE FUSE SHOULD BE
REMOVED AND THE PLUG CUT OFF AND DISPOSED OF SAFELY.
THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT
OFF PLUG IS INSERTED INTO ANY 13 AMP SOCKET.
How to replace the fuse
The location of the differs according to the type of AC mains plug (fig-
ures A and B).
Confirm the AC mains plug fitted and follow the instructions below.
Illustrations may differ from actual AC mains plug.
Open the fuse cover with a screwdriver and replace the fuse and close
or attach the fuse cover.
Figure A Figure B
For U.K.
Safety Information (continued)

4
Important safety instructions
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation holes. Install in accordance with the manufacturer’s instructions.
8) Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that
produce heat.
9) Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider
than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are
provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obso-
lete outlet.
10) Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where
they exit from the apparatus.
11) Only use attachments/accessories specified by the manufacturer.
12) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart
is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13) Unplug this apparatus during lightning storms or when unused for long periods of time.
14) Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way,
such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the appara-
tus has been exposed to rain or moisture, does not operate normally, or has been dropped.
S3125A
Safety Information (continued)

5
Contents
Safety Information................................................................................................................... 2
Important safety instructions ....................................................................................................................................................4
Introduction.............................................................................................................................. 6
Preface ......................................................................................................................................................................................6
Standard accessories ...............................................................................................................................................................6
About the user manuals ............................................................................................................................................................ 6
Disclaimer of warranty .............................................................................................................................................................. 7
About HDD Unit .......................................................................................................................................................................7
Precautions .............................................................................................................................. 8
Precautions for handling ........................................................................................................................................................... 9
Precautions for installation......................................................................................................................................................10
Major operating controls and their functions..................................................................... 11
Front view................................................................................................................................................................................11
Inside the front cover ..............................................................................................................................................................12
Rear view ................................................................................................................................................................................ 13
Installation/operation flows.................................................................................................. 15
Installation flow ......................................................................................................................................................................15
About the operation ...............................................................................................................................................................15
1Rack mounting.................................................................................................................. 16
Installation procedure..............................................................................................................................................................16
Position in the Rack ................................................................................................................................................................17
2Connection ........................................................................................................................ 18
3Turn on the devices .......................................................................................................... 19
Turn on the power of the extension unit .................................................................................................................................19
(When turn off the power of the extension unit)......................................................................................................................19
4HDD unit ............................................................................................................................ 20
Handle the HDD units ............................................................................................................................................................. 20
HDD unit holding bracket........................................................................................................................................................20
When you transport the extension unit ...................................................................................................................................21
Assemble HDD unit................................................................................................................................................................. 22
Install the HDD unit in extension unit...................................................................................................................................... 23
Remove the HDD units from extension unit............................................................................................................................24
Remove the extension unit from recorder...............................................................................................................................24
Troubleshooting..................................................................................................................... 25
Specifications ........................................................................................................................ 26

6
Preface
The WJ-HXE400 is the extension unit for the recorder (WJ-NX400K, WJ-NX300K) which is sold separately.
The unit can be mounted with a maximum of 9 HDD units (hard disk drive installed in a canister).
They can be used as RAID (Redundant Arrays of Inexpensive Disk) to improve fault tolerance of the HDD.
The HDD units are easily mounted and dismounted on the unit by opening the front cover of the unit.
Make sure to connect a corresponding recorder to the unit because the HDD units cannot be set with the unit only.
About the user manuals
The manuals specify how to install and connect the extension unit and how to install and remove the HDD units using the configura-
tion with the recorder as an example. Refer to the Operating Instructions of your recorder as well.
"WJ-HXE400" or "HXE400" shown in the instructions and illustrations used in these operating instructions indicate the WJ-HXE400,
WJ-HXE400/G.
Introduction
Operating Instructions (this book) ..............................................................1 pc.
Power cord (WJ-HXE400)...........................................................................1 pc.
Power cord (WJ-HXE400/G).......................................................................2 pcs.
Connection cable (1.5 m {4 feet 11 inches})................................................1 pc.
Cable clamp ...............................................................................................2 pcs.
Key.............................................................................................................2 pcs.
Label*.........................................................................................................1 pc.
Rack mounting bracket ..............................................................................2 pcs.
Rack mounting bracket fixing screw ...........................................................6 pcs.
Rack handle ...............................................................................................2 pcs.
Screws for the rack handle .........................................................................4 pcs.
Washer.......................................................................................................4 pcs.
HDD canister..............................................................................................9 pcs.
HDD fixing screw........................................................................................54 pcs.
Power cord clamp ......................................................................................1 pc.
* This label is the same one found on the surface of this product. Keep it in view when installing this product in the rack.
Standard accessories

7
About HDD Unit
To install a hard disk drive in the extension unit, it is necessary to assemble an HDD unit (encase the hard disk drive in the HDD
canister). The HDD unit is designed to easily install/remove the hard disk drive in/from the extension unit. Contact your dealer
about purchasing, installing, and replacing the hard disk drives.
Disclaimer of warranty
IN NO EVENT SHALL i-PRO Co., Ltd. BE LIABLE TO ANY PARTY OR ANY PERSON, EXCEPT FOR REPLACEMENT OR
REASONABLE MAINTENANCE OF THE PRODUCT, FOR THE CASES, INCLUDING BUT NOT LIMITED TO BELOW:
(1) ANY LOSS OR DAMAGE, INCLUDING WITHOUT LIMITATION, DIRECT OR INDIRECT, SPECIAL, CONSEQUENTIAL OR
EXEMPLARY, ARISING OUT OF OR RELATING TO THE PRODUCT;
(2) ANY INCONVENIENCE, LOSS, OR DAMAGE CAUSED BY INAPPROPRIATE USE OR NEGLIGENT OPERATION OF THE
USER;
(3) ALL MALFUNCTIONS OR TROUBLES FROM UNAUTHORIZED DISASSEMBLE, REPAIR OR MODIFICATION OF THE
PRODUCT BY THE USER, REGARDLESS OF THE CAUSE OF THE MALFUNCTION OR TROUBLE;
(4) INCONVENIENCE OR ANY LOSS ARISING WHEN IMAGES ARE NOT DISPLAYED, DUE TO ANY REASON OR CAUSE
INCLUDING ANY FAILURE OR PROBLEM OF THE PRODUCT;
(5) ANY PROBLEM, CONSEQUENTIAL INCONVENIENCE, OR LOSS OR DAMAGE, ARISING OUT OF THE SYSTEM
COMBINED BY THE DEVICES OF THIRD PARTY;
(6) ANY CLAIM OR ACTION FOR DAMAGES BROUGHT BY ANY PERSON OR ORGANIZATIO AS A PHOTOGRAPHED
SUBJECT DUE TO VIOLATION OF PRIVACY CONCERNING A SURVEILLANCE CAMERA'S PICTURE OR SAVED DATA,
FOR SOME REASON (INCLUDING USE WHEN USER AUTHENTICATION ON THE AUTHENTICATION SETTING SCREEN IS
SET TO OFF), BECOMING PUBLIC OR BEING USED FOR ANY PURPOSE;
(7) LOSS OF REGISTERED DATA CAUSED BY ANY FAILURE (INCLUDING INITIALIZATION OF THE PRODUCT DUE TO
FORGOTTEN AUTHENTICATION INFORMATION SUCH AS A USER NAME AND PASSWORD).
Introduction (continued)

8
Refer installation work to the dealer.
Installation work requires technique and experiences. Failure
to observe this may cause fire, electric shock, injury, or dam-
age to the product.
• Be sure to consult the dealer.
Stop the operation immediately when something is
wrong with this product.
When smoke goes up from the product or the smell of
smoke comes from the product, continued use will result in
fire, injury, or damage to the product.
• Turn off the power of this product immediately, and then
contact your dealer.
Clean the power plug periodically to keep it dust free.
Dust can cause the insulation to be damaged and cause a fire.
• When cleaning, disconnect the power plug and wipe
with a clean dry cloth.
Grounding
The power plug of this product is 2-prong plug equipped
with a grounding terminal. Use this product after confirming
that grounding is properly installed.
If grounding is not installed properly, it may cause ground
leakage or damage the product resulting in electric shock.
• Contact the dealer for details. (The grounding installation
cost is not included in the price of this product.)
Connect the power plug firmly.
If the power plug is not connected firmly, it can cause fire,
electric shock, etc.
• Do not use the damaged power cord and loose electric
outlets.
Hold the power plug to disconnect the power cord.
Do not pull the power cord since it can cause fire, electric
shock, etc.
Do not insert any foreign objects.
Do not allow any foreign object or liquid such as water, a
metallic part, etc. to enter since it may cause fire or electric
shock.
• If it happens, disconnect the power plug from the elec-
tric outlet immediately and contact your dealer.
Do not install this product in an unstable location.
Selecting an inappropriate installation surface may cause the
product to fall down or topple over, resulting in injury.
Avoid doing anything that can damage the power
cord/plug.
Do not damage, modify, forcefully bend, twist, stretch or
bundle the power cord, and do not put a heavy thing on the
power cord.
Using a damaged power cord can cause electric shock,
short circuit, fire, etc.
• Contact your dealer for repair of the power cord and plug.
Do not connect to outlets or wiring device if their
ratings are beyond the specified rating.
If the rating goes over the specified rating such by putting
many loads on one electric outlet, it can cause generation of
heat resulting in fire.
Do not engage in work related to the installation and
wiring during the power is on.
Failure to observe this may cause fire or electric shock.
Do not strike or give a strong shock to this product
Failure to observe this may cause fire or electric shock.
Avoid placing this product in locations which are
subject to humidity and dust.
Failure to observe this may cause fire or electric shock.
Do not disassemble nor alter this product.
Failure to observe this may cause fire or electric shock.
• Ask your dealer for inspection and repair.
Avoid placing receptacles that contain liquids such as
water on/near this product.
If liquid spills onto this product, it may cause fire or an elec-
tric shock.
• If it happens, disconnect the power plug from the elec-
tric outlet immediately and contact your dealer.
Do not touch this product, power cord and connected
cables when thunder is heard.
Failure to observe this may cause electric shock.
Do not connect/disconnect the power plug with wet
hands.
Failure to observe this may cause electric shock.
Do not block the ventilation holes.
Doing so can cause fire since it can raise the temperature
inside this product high.
Precautions

9
Precautions for handling
Precautions for use
Power source
The input power source for this product is 120 V AC 60 Hz
(WJ-HXE400), 220 V - 240 V AC 50 Hz/ 60 Hz (WJ-HXE400/G).
Do not connect to the outlet that provides the power to
equipment that requires a measurable amount of power
(such as a copy machine, air conditioner, etc.). Avoid placing
this product in locations where is subject to water.
* The provided power cord(s) is (are) dedicated to the use
with this product. Do not use with any other device. Also,
do not use any other power cord with this product.
Ambient operating temperature
Use this product at temperatures between +5 °C to +45 °C
{41 °F to 113 °F}. Failure to do so may damage the internal
parts or cause malfunction.
* Performance and lifetime of hard disk drives are easily affected
by heat (used at high temperature). It is recommended to use
this product at a temperature of approx. +25°C {77 °F}.
POWER switch
The POWER switch is located at the rear of this product.
Even though the POWER switch is set to "OFF", the power
supply will not be cut. To cut the power supply, remove the
power plug of this product from the AC outlet.
About HDD of the HDD unit
• Hard disk drives are precision devices. Handle them with
care. It is possible to damage them if they are moved
while their motors are still running.
• Please be forewarned that any loss of information on the
HDD is not guaranteed under any circumstances.
• Do not move or install this product just after turning the
power on or off (for around 30 seconds.) The hard disk
drives are running.
• The HDD is consumable and the lifetime differs depending
on the operational environment. Write errors may occur
frequently after around 20,000 hours of each HDD
operation and head and motor deterioration may occur
after around 30,000 hour of operation. They will reach
the end of their lifetime after 30,000 hours of operation if
they have been used at the recommended ambient
temperature (approx. +25 °C {77 °F}).
• To prevent data loss from disk crashes, it is recom-
mended to keep the ambient operating temperature at
approx. +25 °C {77 °F} and to replace them after around
18000 hours of operation.
You can check the operating time of each HDD in
"Operation" of the "HDD information" tab under
"Maintenance" under "Advanced" from the setup menu.
• When hard disk drive trouble occurs, replace it immedi-
ately. Contact your dealer about servicing.
Prevent condensation from forming
If this happens, it can cause malfunction.
Leave it switched off for around 2 hours in the following cases.
• When this product is placed in an extremely humid place.
• When this product is placed in a room where a heater
has just been turned on.
• When this product is moved from an air-conditioned
room to a humid and high-temperature room.
Cleaning
• Turn the power off, and then use a soft cloth to clean
this product.
• Do not use strong or abrasive detergents when cleaning
the body.
• When using a chemical cloth for cleaning, read the cau-
tion provided with the chemical cloth product.
Product disposal/transfer
Images saved on the storage device used with this product
may lead to personal information leakage. When it is neces-
sary to dispose or give this product to someone, even when
for repair, make sure that there is no data on the hard disk
drives.
Indication label
Refer to the indication label placed on the surface of this prod-
uct for the equipment classification and power source, etc.
About reboot of this product
In the following cases, this product will automatically reboot
to continue recording.
• When the software of this product has detected the
internal error and reboot becomes necessary.
Disclaimer of warranty on recoded data
i-PRO Co., Ltd. assumes no responsibility or liability, directly
or indirectly, for failure of recording or editing including loss
of data due to any reason or cause which does not exclude
repair or maintenance of this product regardless whether the
subject is hard disk or other parts.
Packing box, Cushion, HDD unit holding bracket
When transporting the extension unit, it is necessary the
Packing case, Cushion and HDD unit holding bracket to pre-
vent the extension unit from damage by fall or vibration.
Keep them properly to use again.
About transportation
The extension unit weighs over 10 kg{22.1 lbs}. Be careful
not to drop the product when transporting. Dropping may
cause damage, deformation of the extension unit, or injury.
Precautions (continued)

10
This product is designed to be used indoors.
i-PRO Co., Ltd. assumes no responsibility for injuries
or property damage resulting from failures arising out
of improper installation or operation inconsistent with
this documentation.
Do not place this product in the following places:
• Locations exposed to direct sunlight
• Locations subject to having strong vibration or impact
• Locations near magnetic field sources such as a televi-
sion or speakers
• Locations near the devices that emit large sound and
generate vibration by sound pressure
• Locations where condensation forms easily, where tem-
perature changes greatly or where humidity level is high
• Locations subject to steam and oil smoke such as a
kitchen
• Locations which are not level
• Locations subject to dust
• Locations where it may get wet from rain or water splash
Do not install this product in locations where the
product or the cables can be destroyed or damaged
by persons with malicious intent.
Place this product horizontally on a level surface.
Do not place this product in an upright position. When
stacking multiple extension units, clear a space of more than
5 cm {2 inches} from both sides, the top, the bottom and
the rear of the extension unit.
More than
5 cm {2 inches} More than
5 cm {2 inches}
More than
5 cm {2 inches}
Heat dissipation
To prevent this product from overheating, heed the following.
Failure to observe this may cause fire or trouble.
• Do not block the cooling fan outlet or the ventilation
holes with a wall, rack, cloth, etc. Maintain the product
periodically to prevent dust from blocking ventilation
holes.
• The lifetime of the cooling fan is limited by use. It is rec-
ommended to replace them after around 30000 hours of
operation. Contact your dealer for replacement of the
cooling fans.
• Clear a space of more than 5 cm {2 inches} from both
sides, the top, and the rear of the product. Do not block
the ventilation holes on the front side since this product
is designed to cool the hard disk drives by drawing in air
from the front.
Avoid placing this product near noise sources
If the cables are placed near noise sources such as fluores-
cent lamps, noises may be produced. In this case, rewire
avoiding the noise sources, or move the product to a place
far from the source.
Grounding
Confirm that the wire is connected from the SIGNAL GND
terminal to earth ground.
A grounding connection must be made before connecting
the power plug or this product to the main power supply.
When disconnecting the grounding wire, make sure that the
power plug of this product is disconnected from the main
power supply.
Avoid placing receptacles that contain liquids such as
water near this product.
If liquid spills onto this product, it may cause fire or an elec-
tric shock.
Shielded (STP) LAN cables must be used with this unit
to ensure compliance with EMC standards.
About sulfuration of rubber products
Do not leave rubber products containing sulfur (packing and
rubber feet) close to the extension unit or in the same storing
box. Sulfur constituent from the rubber products may cause
sulfuration corrosion on electrical parts or terminals and
defects in the extension unit.
Precautions for installation
Precautions (continued)

11
Front view
➀Error indicator [ERROR]
Blinks when an error that can become a problem for the
extension unit to run the system occurs.
Blinks red: System error (Network link error, HDD error,
Recording error, etc.)
Blinks orange: Thermal error, cooling fan malfunction, etc.
Shows a solid light when automatically reset from an error status.
➁LCD
Displays temperature and operation mode of the extension
unit. The extension unit requires the recorder for settings. You
cannot setup the settings using the LCD of the recorder only.
➂HDD access indicator (1~9)
It transmits the HDD status indicator and the HDD
access indicator installed in the front cover.
HDD status indicator (left side)
Indicates the operational status of the respective hard
disk drive. (☞Page 12)
HDD access indicator (right side)
Indicates the status (access/failure) of the respective
hard disk drive. (☞Page 12)
Basically, each indicator will indicate the status of the
respective HDD units (HDD unit 1 to 9), but each indica-
tor will be the same when the system error occurs.
Important:
• When the indicator lights red in the RAID1/RAID5/RAID6
mode, replace the HDD unit with the error immediately.
Contact your dealer about replacing the HDD unit.
• In the RAID5 mode:
When 2 or more HDD access indicators light/blink red, it may be
impossible to recover data on the respective hard disk drives.
• In the RAID6 mode:
When 3 or more HDD access indicators light/blink red, it
may be impossible to recover data on the respective
hard disk drives.
➃Key hole
Use the provided key to open/close the front cover.
Keep the key in a safe place.
Lock the front cover: Insert, push and turn the key to the
left.
Unlock the front cover: Insert, push and turn the key to
the right.
➄Operation indicator [OPERATE]
Lights when the power is on.
➅Set button [Set]
Use this button to initialize the settings of the unit (default)
in the following directions.
①Turn on the unit while pressing the set button.
②Press the set button again to initialize the settings after
"INITIALIZE ACCEPT [SET]" is displayed on the LCD.
* If the unit is not initialized , turn off the power without
pressing the set button.
③When "INITIALIZE DONE!" is displayed on the LCD,
the initialization is completed.
Important:
• When the unit is initialized, the data on the HDD cannot
be read out. Contact your dealer when you initialize the
unit.
➆Front cover
Open the front cover when adding/replacing the HDD
unit.
Keep this cover closed and locked during normal opera-
tion.
➀
⑤ ⑥ ⑦
➂ ④➁
Major operating controls and their functions

12
Inside the front cover
➀HDD units [Option]
Only the hard disk drive encased in the dedicated hard
disk drive canister (HDD units) can be installed in the
extension unit.
Contact your dealer about purchasing, installing, and
replacing the hard disk drives.
➁HDD status indicator [STS]
Indicates the operational status of the respective hard
disk drive.
Lights green: Indicates that the power of the (formatted)
hard disk is on
Blinks green: Indicates that the respective hard disk
drive is for playback use only.
(Recording is unavailable using the respective hard
disk drive.)
Blinks orange: Indicates that the respective hard disk
drive is currently being formatted or during the rec-
ognition process.
Blinks red: Indicates that formatting of the hard disk
drive has failed
Off: Indicates that the power of the hard disk drive is off,
Indicates that the hard disk drive is not connected/
recognized.
➂HDD access/failure indicator (A/F)
Indicates the status (access/failure) of the respective
hard disk drive.
When an HDD failure (error) occurs during operation in
the RAID1/RAID5/RAID6 mode, the indicator will light/
blink red.
Blinks green: Indicates that the respective hard disk
drive is being accessed.
Off: Indicates that the respective hard disk drive is not
being accessed.
Lights red: Indicates that the respective hard disk drive
is faulty (which can be recovered by replacing the
hard disk drive)
In the RAID1/RAID5 mode, it indicates that the
respective hard disk drive is the first faulty drive.
In the RAID6 mode, it indicates that the respective
hard disk drives are the first and second faulty drive.
Blinks red: Indicates that the respective hard disk drive
is faulty (which cannot be recovered even by replac-
ing the hard disk drive)
In the RAID5 mode, it indicates that the respective
hard disk drive is the second faulty drive.
In the RAID6 mode, it indicates that the respective
hard disk drive is the third faulty drive.
Blinks orange: Indicates the drive in data recovery in
RAID1/RAID5/RAID6 mode (it may appear that the
indicator lights orange when recovery is being pro-
cessed at high speed)
➃HDD slots
Up to 9 HDD units can be installed.
➄HDD unit holding bracket fixing thread hole
Use this hole to fix the HDD unit holding bracket when
transporting the extension unit.
* The following illustration shows that 9 HDD units are installed with the "HDD unit holding brackets" removed.
➀ ➁ ➂ ➃
➄
Major operating controls and their functions (continued)

13
Rear view
①Security wire hole
Mount the lock device for the anti-theft security wire.
②External input connector (EXT IN)
Use this connector to connect to the recorder using the
provided connection cable.
③Power cord inlet [AC IN]
Connect the provided power cord to this inlet. The
power plug of the extension unit is 2-prong plug
equipped with a grounding terminal.
④[POWER] switch
Press it to turn on the power. Press it again to turn off
the power.
Important:
• Turn on the power of all extension units, and then turn
on the power of the recorder.
• Turn off the power of the recorder first when turning off
the power.
⑤SIGNAL GND terminal [SIGNAL GND]
Connect this terminal with the SIGNAL GND terminals of
the devices in the system for signal ground. When oper-
ating the extension unit and the devices in the system
without signal ground, noise may be produced.
⑥Cable clamp fixing hole
Attach the provided cable clamp to fix the connection
cable.
How to use the power cord clamp
Fix the power cord firmly at 15 cm to 20 cm {5-7/8 to 7-7/8
inches} from the plug with the provided power cord clamp to
prevent the cable from unplugging.
⋇
⋈
Clamp mount
Power cord clamp
①Pass the power cord clamp through the clamp mount.
②Make a ring with the power cord clamp as shown in
the illustration to tighten the power cord.
⋉
15 cm to 20 cm
{5-7/8 to 7-7/8 inches}
③Tighten the power cord at 15 cm to 20 cm {5-7/8 to
7-7/8 inches} from the connector and fix it to the
clamp mount.
Cut the unnecessary part of the power cord clamp as
necessary.
➅
⑤
①
② ③ ④
Major operating controls and their functions (continued)

14
Cable clamp
Fix the connection cable using the provided cable clamp as
follows.
Step 1
Attach the cable clamp fixing belt to the fixing hole on
the rear, and attach the holder part of the cable clamp
behind the connector end of the connection cable.
Pull the cable clamp fixing belt to confirm that the fixing belt
is not pulled out from the rear of the extension unit.
Note:
• For WJ-NX400K/G model, since the ferrite core is
equipped on the cable, attach the holder part between
the ferrite core and connector end.
Ferrite core
Connector
Cable holder part
Cable clamp
fixing belt
Holder part
Step 2
Close the clamp.
Step 3
Slide the cable clamp toward the connector end of the
connection cable, and then hold the connector end of
the connection cable.
Make sure that the connection cable is connected firmly.
Note:
• Overhead view
(1)
Knob
(2) Clamp Connector end of the
connection cable
• Hold the connector end of the connection cable by slid-
ing the holder part in the direction of arrow indication (1).
If the holder part is not slide all the way to the connector
end side, the cable may come out.
• To slide the holder part in the direction of arrow (2), slide
it while keeping the knob pulled down.
Major operating controls and their functions (continued)

15
Installation flow
The installation flow of the extension unit is as follows.
About the operation
The extension unit requires the recorder to set the operational mode of the HDD units or format them. Perform the setting using
the connected recorder.
Refer to the Operating Instructions of a corresponding recorder for further information.
Installation/operation flows
1Rack mounting
☞Page 16
2Connection
☞Page 18
3Turn on the devices
☞Page 19
4HDD unit
(Install the HDD units)
☞Page 23
Install the extension unit in the rack.
Go to step 2when not installing it in the rack.
Connect the extension unit to the recorder.
Turn on the power of the extension unit.
Turn on the power of the extension unit before turning on the
power of the recorder.
Install the HDD units through the HDD insertion slot on the
front cover of the unit.

16
Step 3
Place the provided rack mounting brackets (provided)
on both sides of the extension unit and fix them with
the rack mounting bracket fixing screw (provided) (x6).
Secure them using the rack mounting bracket fixing screw
(provided) (x6).
Tightening torque: 0.88 N·m ~ 1.08 N·m (0.65 lbf·ft ~ 0.80 lbf·ft)
Rack mounting bracket fixing screws (provided)
Rack handle (provided)
Rack mounting brackets (provided)
Rack handle (provided)
Step 4
Install the extension unit in the rack by using four rack
mounting screws.
Secure using the rack mounting screws (x4).
Tightening torque: 2.0 N·m ~ 2.4 N·m (1.48 lbf·ft ~ 1.78 lbf·ft)
Rack mounting screws (M5 x 12, locally procured)
Important:
• When installing the extension unit in the rack, make a
space of 1U (44 mm {1-23/32 inches}) above and below
the extension unit for ventilation.
• Keep the temperature in the rack below +45 °C {113 °F}.
• It is recommended to install cooling fans or equivalents to
keep the temperature in the rack below +30 °C {86 °F}.
• Do not block the ventilation holes or slots to prevent the
extension unit from overheating.
• The extension unit weighs over 10 kg{22.1 lbs}. Be
careful not to drop the extension unit when installing it
into a rack. Dropping may cause damage, deformation
of the extension unit, or injury.
Install the extension unit in an EIA standard 19-inch rack
(Depth: 550 mm or more).
Note:
• Use four M5 × 12 screws (locally procured) to install the
extension unit in a rack.
• The illustration on this page is schematic. Details of the
shape are omitted.
Installation procedure
Step 1
Remove the five rubber feet from the bottom of the
extension unit using a flathead screwdriver.
Use a screwdriver to remove the screws holding the rubber feet.
Remove rubber feet
Step 2
Attach the rack handles (provided) to the rack mount-
ing brackets (provided).
Fix them using the screws (provided) (x4) and the washers
(provided) (x4) for the rack handle.
Tightening torque: 2.0 N·m ~ 2.4 N·m (1.48 lbf·ft ~ 1.78 lbf·ft)
Washer (provided)
Screws for the rack handle (provided)
Rack mounting bracket (provided)
Washer (provided)
Rack handle (provided)
Note:
• The rack mounting bracket (provided) has two types of
fitting holes to adjust the protrusion of the front rack. Use
either of them depending on the installation conditions.
Standard fitting holes
Fitting holes for the front position (about 15 mm {19/32 inches})
1 Rack mounting

17
Position in the Rack
This is an example where the recorder (WJ-NX400K) and extension unit (max 5 units) are installed in the rack.
Connect the recorder and the extension unit using the connection cable (1.5 m {4 feet 11 inches}) provided with the unit.
(☞Page 18)
(Other unit, Rack upper side)
(Other unit, Rack bottom side)
Recorder
Require a space of 1 unit
Require a space of 1 unit
Require a space of 1 unit
Require a space of 1 unit
Require a space of 1 unit
Connection cable
(provided with extension unit)
Extension Unit
(Unit number 1)
Extension Unit
(Unit number 2)
Extension Unit
(Unit number 3)
Extension Unit
(Unit number 4)
Extension Unit
(Unit number 5)
Require a space of 1 unit
Require a space of 1 unit
Note:
• When installing the extension unit in the rack, leave a space of 1U (44 mm {1-23/32 inches}) above and below the extension
unit for ventilation.
• The unit number is the same as the external storage connector number of the recorder.
1 Rack mounting (continued)

18
A separately sold recorder can be mounted with a maximum of 5 units. Connect the extension unit and the recorder using the
provided connection cable. Fix the connection cable with the provided cable clamp so that it does not come off when installing
the unit.
45 1
23
Fix the connection cable
Fix the connection cable
Connection cable
(provided with extension unit)
Network disk recorder
Extension Unit (Unit number 1)
Extension Unit (Unit number 2)
Extension Unit (Unit number 3)
Extension Unit (Unit number 4)
Extension Unit (Unit number 5)
Attach a cable clamp to each connection
cable.
Attach a cable clamp to each connection
cable.
Important:
• Use only the connection cable provided with the extension unit when connecting the extension unit and the network disk
recorder.
• Fix the connection cable firmly using the cable clamp provided with the extension unit (☞Page 14). When the cable is not
connected firmly or when it is disconnected, the system may become unstable or recording may fail.
• Do not wind the cable in a coil.
2 Connection

19
Turn on the power of the extension unit
Important:
• Connect the provided power source cords to all the extension units and turn them on before turning on the recorder.
Step 1
Connect the provided power cord to the power cord
inlet on the rear panel of the extension unit, and insert
the power plug to an outlet whose rating is as follows.
WJ-HXE400: 120 V AC, 60 Hz
WJ-HXE400/G: 220 V - 240 V AC, 50 Hz/60 Hz
Important:
• Insert the power cord fully into the power supply terminal
so that it will not loosen or come out.
• Fix the power cord firmly at 15 cm to 20 cm {5-7/8 to
7-7/8 inches} from the plug with the provided power
cord clamp to prevent the cable from unplugging.
How to use the power cord clamp
⋇
⋈
Clamp mount
Power cord clamp
①Pass the power cord clamp through the clamp mount.
②Make a ring with the power cord clamp as shown in the
illustration to tighten the power cord.
⋉
15 cm to 20 cm
{5-7/8 to 7-7/8 inches}
③Tighten the power cord at 15 cm to 20 cm {5-7/8 to 7-7/8
inches} from the connector and fix it to the clamp mount.
Cut the unnecessary part of the power cord clamp as
necessary.
Step 2
Press the POWER switch on the rear of the extension
unit to turn on the power.
• The OPERATE indicator will light and the system check
(checking the system and hard disk drives) will start.
• The "WJ-HXE400 Initializing" indication will be displayed on
the LCD at startup.
• When the system check is complete, the operational mode
and temperature will be displayed on the LCD.
3 Turn on the devices
(When turn off the power of the extension unit)
Follow the procedure below to turn off the power.
If multiple extension units are connected, turn off them in an arbitrary order.
Step 1
Stop recording on the recorder.
• Stop all recordings on the network disk recorder.
• Stop all playbacks.
Step 2
Turn off the power of the recorder.
Step 3
Turn off the power of the extension unit.
Important:
• Turn off the power of the extension unit after turning
off the power of the recorder.

20
Handle the HDD units
To install a hard disk drive in the extension unit, it is necessary to assemble an HDD unit (encase the hard disk drive in the HDD
canister).
The HDD unit is designed to easily install/remove the hard disk drive in/from the extension unit.
Contact your dealer about purchasing, installing, and replacing the hard disk drives.
Important:
• The HDD unit is a precision device. Handle them with care. Vibration and shocks may cause failure of the HDD unit.
• Before transportation, read "HDD unit holding bracket" (this page) and "When you transport the extension unit" (☞Page 21).
• Do not move or install this product just after turning the power on or off (for around 30 seconds.) The hard disk drives are
running.
• Install the HDD units in order starting with disk slot 1.
• Once the operation has started in RAID1*, RAID5* or RAID6* mode, do not change the position of the HDD unit. If they are
changed, it may become impossible to read recorded data.
* Refer to Operation/Settings of the Operating Instructions for RAID mode.
HDD unit holding bracket
The extension unit has the "HDD unit holding bracket" in the HDD unit slot, screwed in at the factory before shipment. To install
the HDD unit in the extension unit, remove the "HDD unit holding bracket" first.
The "HDD unit holding bracket" and the screw for fixing the bracket are necessary to prevent the HDD unit from falling off during
transportation. Keep them properly.
How to remove the HDD unit holding bracket
①Remove the fixing screw for bracket.
②Slide the HDD unit holding
bracket to the right and
remove it.
HDD unit holding bracket
②
①
4 HDD unit