JVC ViewFinder VF-HP840U User manual

For Customer Use:
Enter below the Serial No. which is located on the
body.
Retain this information for future reference.
Model No.
Serial No.
Thank you for purchasing this JVC product.
Before beginning to operate this unit, please read
the instructions carefully to ensure the best
possible performance.
VIEWFINDER
VF-HP840U INSTRUCTIONS
LST0662-001B
VF-HP840U_EN.book Page 1 Thursday, January 17, 2008 2:48 PM

2
Getting Started
1.
Read all of these instructions.
2.
Save these instructions for later use.
PORTABLE CART WARNING
(symbol provided by RETAC)
S3125A
IMPORTANT SAFEGUARDS
4.
Unplug this appliance system from the wall outlet before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use a damp cloth for cleaning.
5.
Do not use attachments not recommended by the appliance manufacturer as they may cause hazards.
6.
Do not use this appliance near water - for example, near a bathtub, washbowl,kitchen sink, or laundry tub, in a wet
basement, or near a swimming pool, etc.
7.
Do not place this appliance on an unstable cart, stand, or table. The appliance may fall,
causing serious injury to a child or adult, and serious damage to the appliance.
Use only with a cart or stand recommended by the manufacturer, or sold with the appliance.
Wall or shelf mounting should follow the manufacturer's instructions, and should use a
mounting kit approved by the manufacturer. An appliance and cart combination should be
moved with care.
Quick stops, excessive force, and uneven surfaces may cause the appliance and cart
combination to overturn.
8.
Slots and openings in the cabinet and the back or bottom are provided for ventilation, and to insure reliable operation of
the appliance and to protect it from overheating, these openings must not be blocked or covered. The openings should
never be blocked by placing the appliance on a bed, sofa, rug, or other similar surface.
This appliance should never be placed near or over a radiator or heat register.
This appliance should not be placed in a built-in installation such as a bookcase unless proper ventilation is provided.
9.
This appliance should be operated only from the type of power source indicated on the marking label. If you are not sure
of the type of power supplied to your home, consult your dealer or local power company. For appliance designed to
operate from battery power, refer to the operating instructions.
10.
For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods
of time, unplug it form the wall outlet and disconnect the antenna or cable system. This will prevent damage to the
product due to lightning and power-line surges.
These are general IMPORTANT SAFEGUARDS and certain items may not apply to all appliances.
3.
All warnings on the product and in the operating instructions should be adhered to.
FOR USA
14.
Never push objects of any kind into this appliance through cabinet slots as they may touch dangerous voltage points or
short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the appliance.
15.
Do not attempt to service this appliance yourself as opening or removing covers may expose you to dangerous voltage
or other hazards. Refer all servicing to qualified service personnel.
16.
Unplug this appliance from the wall outlet and refer servicing to qualified service personnel under the following conditions:
a. When the power cord or plug is damaged or frayed.
b. If liquid has been spilled into the appliance.
c. If the appliance has been exposed to rain or water.
d.
e. If the appliance has been dropped or the cabinet has been damaged.
f.
If the appliance does not operate normally by following the operating instructions. Adjust only those controls that
are covered by the operating instructions as improper adjustment of other controls may result in damage and will
often require extensive work by a qualified technician to restore the appliance to normal operation.
When the appliance exhibits a distinct change in performance - this indicates a need for service.
17.
When replacement parts are required, be sure the service technician has used replacement parts specified by the
manufacturer that have the same characteristics as the original part. Unauthorized substitutions may result in fire,
electric shock, or other hazards.
18.
Upon completion of any service or repairs to this appliance, ask the service technician to perform routine safety checks
to determine that the appliance is in safe operating condition.
13.
Do not overload wall outlets and extension cords as this can result in fire or electric shock.
12.
Follow all warnings and instructions marked on the appliance.
11.
Do not allow anything to rest on the power cord. Do not locate this appliance where the cord will be abused by persons
walking on it.
VF-HP840U_EN.book Page 2 Thursday, January 17, 2008 2:48 PM

3
Safety Precautions
CAUTION:
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
FOR USA AND CANADA
TO REDUCE THE RISK OF ELECTRIC
SHOCK. DO NOT REMOVE COVER (OR
BACK).
NO USER-SERVICEABLE PARTSINSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
The lightning flash wish arrowhead symbol,
within an equilateral triangle is intended to
alert the user to the presence of uninsulated
"dangerous voltage" within the product's
enclosure that may be of sufficient magnitude
to con-stitute a risk of electric shock to
persons.
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.
Information for USA
INFORMATION:
This equipment has been tested and found to comply 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 environment.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
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.
CAUTION:
CHANGES OR MODIFICATIONS NOT APPROVED BY JVC
COULD VOID USER fS AUTHORITY TO OPERATE THE
EQUIPMENT.
NOTE:
The rating plate (serial number plate) is on this unit.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC
RULES.
OPERATION IS SUBJECT TO THE FOLLOWING TWO
CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE
HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST
ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING
INTERFERENCE THAT MAY CAUSE UNDESIRED
OPERATION.
This unit should be used with 12 V DC only.
Cet appareil num rique de la Classe A est conforme á la norme
NMB-003 du Canada.
INFORMATION (FOR CANADA)
RENSEIGNEMENT
(POUR CANADA)
This Class A digital apparatus complies with Canadian ICES-003.
Due to design modifications, data given in this instruction book
are subject to possible change without prior notice.
AVERTISSEMENT:
POUR EVITER LES RISQUES
D'INCENDIE OU D'ELECTROCUTION, NE PAS
EXPOSER L'APPAREIL A L'HUMIDITE OU A LA
PLUIE.
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN
OR MOISTURE.
This unit should be used with 12V DC only.
CAUTION:
To prevent electric shocks and fire hazards, do NOT use any
other power source.
NOTE:
The rating plate (serial number plate) is on the side of the unit.
REMARQUE:
La plaque signalétique (plaque du numéro desérie) est située sur
le cadre inférieur de l’unité.
IMPORTANT RECYCLING INFORMATION
This product has a fluorescent lamp that contains
mercury. Disposal of these materials may be
regulated in your community due to environmental
considerations. For disposal or recycling
information, please contact your local authorities
or for USA, the Electronics Industries Alliance:
http://www.eiae.org.
CAUTION:
To prevent electric shock, do not open the cabinet. No user
serviceable parts inside. Refer servicing to qualified service
personnel.
The apparatus shall not be exposed to dripping or splashing and
that no objects filled with liquids, such as vases, shall be placed
close to the apparatus.
Ce magnétoscope ne doit être utilisé que sur du courant
direct en 12V.
ATTENTION:
Afin d’eviter tout resque d’incendie ou d’electrocution, ne
pas utillser d’autres sources d’alimentation électrique.
VF-HP840U_EN.book Page 3 Thursday, January 17, 2008 2:48 PM

4
Getting Started
Safety Precautions
(continued)
Cable Maximum Cable
Length
VF CABLE Shield Cable 0.58 m
DC CABLE Shield Cable 5 m
RETURN VIDEO Shield Cable 5 m
FOR EUROPE
This equipment is in conformity with the provisions and protection
requirements of the corresponding European Directives. This
equipment is designed for professional video appliances and can
be used in the following environments:
In order to keep the best performance and furthermore for
electromagnetic compatibility we recommend to use cables not
exceeding the following lengths:
RControlled EMC environment (for example, purpose-built
broadcasting or recording studio), and rural outdoors
environments.
Caution:
Where there are strong electromagnetic waves or magnetism, for
example near a radio or TV transmitter, transformer, motor, etc.,
the picture and the sound may be disturbed. In such case, please
keep the apparatus away from the sources of the disturbance.
Dear Customer,
This apparatus is in conformance with the valid European directives and
standards regarding electromagnetic compatibility and electrical safety.
European representative of Victor Company of Japan, Limited is:
JVC Technology Centre Europe GmbH
Company name changed in:
JVC Technical Services Europe GmbH
Postfach 10 05 52
61145 Friedberg
Germany
Sehr geehrter Kunde, sehr geehrte Kundin,
dieses Gerät stimmt mit den gültigen europäischen Richtlinien und
Normen bezüglich elektromagnetischer Verträglichkeit und
elektrischer Sicherheit überein.
Die europäische Vertretung für die Victor Company of Japan,
Limited ist:
JVC Technology Centre Europe GmbH
Firmenname geändert in:
JVC Technical Services Europe GmbH
Postfach 10 05 52
61145 Friedberg
Deutschland
Information for Users on Disposal of Old Equipment
[European Union]
Attention:
This symbol indicates that the electrical and electronic
equipment should not be disposed as general household
waste at its end-of-life. Instead, the product should be handed
over to the applicable collection point for the recycling of
electrical and electronic equipment for proper treatment,
recovery and recycling in accordance with your national
legislation.
By disposing of this product correctly, you will help to conserve
natural resources and will help prevent potential negative
effects on the environment and human health which could
otherwise be caused by inappropriate waste handling of this
product. For more information about collection point and
recycling of this product, please contact your local municipal
office, your household waste disposal service or the shop
where you purchased the product.
Penalties may be applicable
for incorrect disposal of this waste, in accordance with national
legislation.
(Business users)
If you wish to dispose of this product, please visit our web
page www.jvceurope.com to obtain information about the
take-back of the product.
[Other Countries outside the European Union]
If you wish to dispose of this product, please do so in
accordance with applicable national legislation or other rules
in your country for the treatment of old electrical and
electronic equipment.
This symbol isonly valid in the European
Union.
VF-HP840U_EN.book Page 4 Thursday, January 17, 2008 2:48 PM

5
Getting Started
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table of Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
PrecautionsDuring Use . . . . . . . . . . . . . . . . . . . . . . 6
Namesand Functionsof Parts. . . . . . . . . . . . . . . . . 7
Setup
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mounting on KA-HD250U ...................................... 9
Connecting VF cable ............................................. 9
Mounting hood cover (provided) .......................... 10
Adjusting position . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Outputting images. . . . . . . . . . . . . . . . . . . . . . . . . 10
Adjusting picture quality . . . . . . . . . . . . . . . . . . . . . 10
Menu
MenuSetting Method . . . . . . . . . . . . . . . . . . . . . . . 11
Entering camera name ........................................ 11
Returning menusettingsto default settings......... 11
Menuscreen content . . . . . . . . . . . . . . . . . . . . . . . 12
MAIN MENU Screen ............................................ 12
MARKER SETTING MenuScreen ...................... 13
SHOOTING ASSIST MenuScreen ..................... 14
VIDEO FORMAT MenuScreen ........................... 15
OTHERS MenuScreen ....................................... 15
Others
Precautionswhen using with GY-HD250U . . . . . . . 16
Terminal Specifications. . . . . . . . . . . . . . . . . . . . . 16
Setting Selection DIP Switch . . . . . . . . . . . . . . . . . 17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Thisproduct isan 8.4-inch color viewfinder for use in the GY-
HD250U/KA-HD250U studio system.
High Resolution
Thisisa large viewfinder with an 8.4-inch XGA (1024 x 768)
LCD panel.
Multi Scan
SupportsYPbPr (RGB) input of HD (1080i 50/60, 720p 50/60)
and SD (480i 60, 576i 50). (For RGB, only SD issupported)
Return Video Input Terminal
Thisproduct isequipped with a return video input terminal and
allowscomposite signalsand HD component (Y signalsonly)
input.
Rich Marker
The product isinstalled with the Safety Zone display, two types
of Zebra display and the Focus Assist function, all of which are
highly useful in the studio.
Screen Menu Function
The menuisdisplayed on the screen and youcan set or adjust
the most appropriate monitor settingsfor the connected system.
Table of Contents Features
How to read this manual
䡵Definition of Symbols
Caution : Precautionsthat need to be taken during operation
Note : Detailsfor reference, such asfeaturesand
restrictionsduring use.
A: Page or item to refer to.
䡵Descriptions in this manual
●The copyright of thismanual belongsto Victor Company of
Japan, Limited. Reproduction or duplication of a part or the
whole of thismanual without permission isprohibited.
●Product namesof other companiescontained in this
manual are the trademark or registered trademark of the
respective companies. Symbolssuch as姠, 姞, and 姝are
omitted in thismanual.
●Designs, specifications, and other detailscontained in this
manual may be modified for improvement without prior
notice.
VF-HP840U_EN.book Page 5 Thursday, January 17, 2008 2:48 PM

6
Getting Started
Location of Storage and Use
䢇Do not place thisproduct at the following locations.
Doing so may cause the product to malfunction or break down.
●Hot or cold placesbeyond the allowable operating
temperature range of 0°C to +40°C.
●Humid placesbeyond the allowable humidity range of
30 % RH to 80 % RH (non-condensing).
●Placesin the vicinity of a strong magnetic field, such as
near transformersor motors.
●Near equipment that emit radio waves, such as
transceiversor mobile phones.
●Placesthat are subject to dust or sand.
●Placesthat are subject to strong vibrations.
●Placesthat are susceptible to condensation, such asnear
windows.
●Placesthat are subject to vapor or oil, such askitchens.
●Placesthat emit radioactive raysor X-rays, and corrosive
gases.
䢇Noise may occur in the imagesor their colorsmay change
when thisproduct and the cable that isused to connect it are
used at a place that issubject to strong radio or magnetic
waves(e.g., near radios, TVs, transformers, or monitors).
Handling the Product
䢇Insufficient ventilation may result in malfunction of this
product. Make sure that objectsplaced around thisproduct
do not obstruct itsventilation.
䢇Do not place containersfilled with water (vases, plants, cups,
cosmetics, drugsand so on) on top of thisproduct. Water
getting into the interior of the equipment may result in fire
and electric shock.
Moving the Product
Remove connection cablesbefore moving thisproduct
When moving thisproduct, do so after turning off the power of
the connected camera, and make sure that youunplug the
cable from thisproduct. Failure to do so may damage the cable
or cause fire or electric shock.
Maintenance
䢇Turn off the power of the connected camera before
performing maintenance of thisproduct.
䢇Use a soft cloth to wipe the product. Do not wipe using
thinner or benzene, asdoing so may cause the surface to
melt or turn cloudy. When there issignificant soiling, wipe
using a cloth by dipping it in a neutral detergent that isdiluted
with water, followed by cleaning using a dry cloth.
䢇The exterior of thisproduct may be altered or the paint fall off
when come into contact with rubber or vinyl productsfor a
prolonged period of time.
Energy Conservation
When thisproduct isnot used for a prolonged period of time,
turn off the power of the system for safety and energy
conservation purposes.
LCD Screen
Leaving the LCD screen exposed to the sun will damage the
LCD screen. Do not place the product outdoorsor near a
window.
Do not scratch or press hard on the LCD screen, or place
objectson top of the screen. Blotchesmay appear on the
screen and lead to malfunction of the LCD panel.
When using the product in cold places, horizontal stripesand
trailing imagesmay appear or the screen may appear dark.
These are not malfunctions. The screen will appear normal
again when the temperature rises.
Continuous display of still imagesmay cause residual images.
The screen will return to normal after some time.
When the product isin use, the screen or cabinet may become
warm. Thisisnot a malfunction.
Bright/Dark Spots
Bright spots(red, blue or green) and dark spotsthat are
continuously lit up may appear on the screen.
An LCD panel ismanufactured with extremely precise
technology. Although it consistsof more than 99.99 % effective
pixels, it may exhibit a very small number of continuous bright or
dark spotson the screen.
Maintaining the LCD Screen
The surface of an LCD screen isspecially treated to control
reflectionsoff the surface. Improper maintenance may affect the
performance of the screen. Assuch, please adhere to the
following points.
●Use a soft cloth such asa cleaning cloth or spectacles
cleaning cloth to lightly wipe off any dirt on the surface of the
screen.
●When there issignificant soiling, wipe using a soft cloth such
asa cleaning cloth or spectaclescleaning cloth, by dipping it
into a little amount of water.
●Do not use alcohol, benzene, thinner, acidic, alkaline or
abrasive cleaning fluid, or chemical wiping cloth to clean the
screen asthey will scratch the surface.
Disposal
●Do not dispose thisproduct with other normal waste
products.
Do not throw the monitor into the rubbish that will be sent to
the dumping-ground.
●The fluorescent tube of thisproduct containsmercury. Follow
the rulesand regulationsof the local authoritiesfor disposal.
Precautions During Use
VF-HP840U_EN.book Page 6 Thursday, January 17, 2008 2:48 PM

7
A[MENU] Dial (Button)
Scroll up and down thisdial to move up and down the cursor
(X) for selecting itemswhen the Menuscreen isdisplayed.
Press the dial to confirm the selected item.
B[STATUS/MENU] Button
●When the normal screen isdisplayed, press thisbutton to
exit the status display set in the Menu(ASPECT MARKER,
SAFETY ZONE, CENTER MARK, CAMERA NAME,
ZEBRA). Press thisbutton again to display the status.
● When the normal screen isdisplayed, press thisbutton for more
than 1 second to display the Menuscreen. When the Menu
screen isdisplayed, press thisbutton to exit the Menuscreen.
Note：
●Itemswhere the [ASPECT MARKER], [SAFETY ZONE],
[CENTER MARK], [CAMERA NAME], [ZEBRA] display are
set to AOFFBin the Menuwill not be displayed on the Status
screen even when thisbutton ispressed.
C[BRIGHT] Adjustment Control
Thisadjuststhe brightness of the screen. Turn to the right to
brighten and turn to the left to darken.
D[CONTRAST] Adjustment Control
Thisadjuststhe contrast of the screen. Turn to the right to increase
the contrast and turn to the left to decrease the contrast.
E[PEAKING] Adjustment Control
Thisadjuststhe peaking of the screen. Turn to the right to
sharpen the contour and turn to the left to soften.
Caution：
●When thisproduct isconnected to GY-HD250U, the LCD
monitor display of the camera can be changed if youturn the
PEAKING control on the camera. However, the monitor
display at VF-HP840U cannot be changed. PEAKING for VF-
HP840U must be operated on VF-HP840U.
●When connected to GY-HD250U and [VF SIGNAL] setting at
the camera isset to ARGBB, [PEAKING] adjustment at the
camera isforced to off.
●The above feature may not function depending on the
version of the camera’ssoftware. For details, please consult
JVC’sauthorized dealers.
F[1 : 1] Button
Press thisbutton to display the input video signals1: 1 without
resizing. During thisdisplay, the [ASPECT MARKER], [SAFETY
ZONE], [CENTER MARK] display will be temporarily AOFFB.
G[FOCUS ASSIST] Button
Press thisbutton to display the focused area in color. Accurate
focusing can be done. (PEAKING cannot be adjusted.)
Note：
●The color and level of the focused area can be changed at
the Menuscreen. (APage 14)
●
When connected to GY-HD250U and [VF SIGNAL] isset to
A RGB B at the camera LCD/VF MENU screen, set FOCUS
ASSIST at the camera to
A OFF B . Settingsat VF will be invalid.
●When connected to GY-HD250U and the FOCUS ASSIST
setting on the camera isON, pressing the [FOCUS ASSIST]
button of thisproduct will display APLEASE CHECK
CAMERA SETTINGB.
●When connected to GY-HD250U, the product will not operate
under the following conditions.
During BARS ON, SKIN COLOR ADJUST or SKIN AREA
SW ON
●When connected to GY-HD250U, asthe character being
output from the camera isrecognized asfocus area, set
[ANALOG OUTPUT CHAR.] at the camera to AOFFB.
HTALLY Lamp
Thisdisplaysthe monitor status of the input screen in red or green.
When Tally PGM (Program) signalsare input, the lamp lightsup in red.
When Tally PVM (Preview) signalsare input, the lamp lightsup
in green.
When CALL signalsare input, the lamp blinksin red.
Names and Functions of Parts
(Front)
MENU
STATUS
BRIGHT
CONTRAST
PEAKING
1:1
FOCUS
ASSIST
5
6
4
5
6
4
H
C
D
E
F
G
H
A
B
H
VF-HP840U_EN.book Page 7 Thursday, January 17, 2008 2:48 PM

8
Getting Started
I[TALLY] Switch
ThisturnsON/OFF the TALLY lamp M.
ON : TALLY isenabled.
OFF : TALLY isdisabled.
Note：
●The TALLY lamp Hat the screen operatesregardless of this
switch.
J[DC INPUT] Terminal (XLR type, 4-pin)
Thisproduct can operate by connecting to an external power
supply of DC 12 V. (When thisproduct isconnected to
KA-HD250U, thisterminal doesnot have to be connected to an
external power supply.)
K[RETURN] Input Terminal
Thisisan input terminal for composite video signalsor
component (Y only) signals. It connectsthe return video
signals.
Note：
●Select the type of return video signalsfrom the [RET VIDEO]
item on the [VIDEO FORMAT] menuscreen of thisproduct.
(APage 15)
●B&W screen will be displayed even when composite video
signalsare input.
●During return video signal display, status display other than
[CAMERA NAME] will be AOFFB.
●The above feature may not function depending on the
version of the camera’ssoftware. For details, please consult
JVC’sauthorized dealers.
L[VF CABLE] Input Terminal
Connect thisterminal to the KA-HD250U VF output terminal
(20-pin) with the provided VF cable.
MTALLY Lamp
Thisdisplaysthe monitor status of the input screen in red.
Only when Tally PGM (Program) signalsare input, the lamp
lightsup in red.
Note：
●Use [TALLY] switch Ito turn ON/OFF the display function of
thislamp.
NVF CABLE HOLDER
Thisholder clampsdown the provided VF cable when
connecting the cable to the input terminal.
Note：
●Be sure to secure the VF cable with the holder asit prevents
the cable from slipping during connection. (APage 9)
ODIP Switch (APage 17)
Some functionscan be specified according to the usage of
individual users.
Note：
●Use the factory settingswhen connecting to the GY-HD250U
with KA-HD250U system.
Names and Functions of Parts
(Rear)
DC INPUT RETURN
VR CABLE TALLY
ON
OFF
I
L
K
J
M
N
O
VF-HP840U_EN.book Page 8 Thursday, January 17, 2008 2:48 PM

9
Setup
Mounting on KA-HD250U
1Rotate the lock level asshown by the arrow ( ) in
the diagram below.
2Align the bracket for viewfinder mount on top of
KA-HD250U with the groove at the viewfinder mount
base and insert from the back of the camera head
3Rotate the viewfinder lock lever asshown in the
direction of the arrow ( ) and secure the viewfinder
to KA-HD250U.
Removing the viewfinder
1Rotate the lock lever in an anticlockwise direction as
shown in the diagram below.
2 While pressing the Release button, slide the
viewfinder toward the back of the camera head and
remove.
Connecting VF cable
When connecting the VF cable, be sure to turn off the POWER
switch on the camera or on the remote control unit first.
Connect the viewfinder [VF CABLE] terminal to the KA-HD250U
VF output terminal with the provided VF cable.
1Insert the provided VF cable completely into the [VF
CABLE] terminal.
2Loosen the set screw on the cable holder, tilt the
holder at an angle and insert the VF cable from the
bottom into the groove on the holder.
3Press the cable holder squarely against the main unit
and secure the set screw.
If the cable holder isslanted, the set screw cannot be
secured and it may damage the screw hole of the
main unit.
Caution：
To r e d uce emission of unwanted radio waves, install a core
filter on the VF cable connecting GY-HD250U and KA-HD250U.
●Use the core filter (black) provided with GY-HD250U.
●Install the core filter (black) asclose aspossible to
KA-HD250U.
Note：
●Use KA-HD250U with identification letter from (A) onwards
on the name plate for connecting to thisunit. If there isno
identification letter, consult JVC dealer.
Installation
Mount Base
Bracket for viewfinder mount
Lock Lever
Lock Lever
Push
Release button
Lock Lever
VF Cable
Cable holder
Set screw
VF Cable
(Good) (No good)
Core filter (black)
VF-HP840U_EN.book Page 9 Thursday, January 17, 2008 2:48 PM

10
Setup
Mounting hood cover (provided)
1Align the hood cover with the groove on top of the
viewfinder screen and insert from the top.
2Secure with the screw found under the center of the
viewfinder screen.
1To adjust the angle of the viewfinder, loosen the Pan/
Tilt Lock Handle and secure it at an appropriate angle
for visible viewing.
Note：
●The LCD screen may be difficult to see depending on the
view angle. Use the angle right in front of the screen.
1When setting the POWER switch on remote control
or camera to AONB, image will be output on the
viewfinder.
Note：
●Depending on the system environment, it may take up to 40
secondsbefore the image isoutput.
1Turn the [BRIGHT] control to adjust the
brightness of the screen.
To brighten, turn to the right.
Caution：
●If the [BRIGHT] control isturned completely to the left,
imagesmay not be output.
2Turn the [CONTRAST] control to adjust the
contrast of the screen.
To i n c r e a se the contrast, turn to the right.
3Turn the [PEAKING] control to adjust the peaking.
To sharpen the contour, turn to the right.
Note：
●Yo ucan adjust the freqency band where the contour is
emphasized with the [PEAKING] control under the
[PEAKING FREQ.] item of the [SHOOTING ASSIST] menu
screen. (APage 14)
Caution：
●After the power switch of the camera or the remote control
unit isturned off, wait for 10 secondsand above to turn on
the switch again.
●Turning ON/OFF the power switch quickly may cause
malfunction.
Installation (continued)
Adjusting position
Screw
Panning
Tilt
Panning and Tilt Lock Handle
Outputting images
Adjusting picture quality
MENU
STATUS
BRIGHT
CONTRAST
PEAKING
1:1
FOCUS
ASSIST
5
6
4
5
6
4
[BRIGHT] control
[CONTRAST] control
[PEAKING] control
VF-HP840U_EN.book Page 10 Thursday, January 17, 2008 2:48 PM

11
Menu
1Press the [MENU] button for 1 second or more
during normal screen display.
The [MAIN MENU] screen appears.
2Turn the [MENU] dial to align the cursor to the
menu screen you wish to set.
3Press the [MENU] dial.
The selected menuscreen appears.
●When the [EXIT] item on the [MAIN MENU] screen is
selected, thiswill return to the normal screen.
4Turn the [MENU] dial to align the cursor to the
item for setting and press the [MENU] dial.
The item setting blinks.
●When the [PAGE BACK] item on the Menuscreen is
selected, thiswill return to the [MAIN MENU] screen.
5Turn the [MENU] dial to change the setting.
6 Press the [MENU] dial to stop the blinking of the setting.
7To continue changing the settings, repeat the
above steps 3to 6.
8 After all settings are complete, press the [MENU] button.
Thisreturnsto the normal screen.
Entering camera name
1Display the [OTHERS] menu screen.
2Turn the [MENU] dial to align the cursor to the
[NAME EDIT] item.
3Press the [MENU] dial.
The first character blinks.
4Turn the [MENU] dial to select any character.
5Press the [MENU] dial to confirm the character.
The next character blinks.
6Repeat the above steps 3and 4to enter 6
characters.
To enter a title of less than 6 characters, use space.
7After all the characters are entered, press the
[MENU] button.
Thisreturnsto the normal screen.
Note：
●To d i splay the camera name on the Status screen, set the
[CAMERA NAME] item in the [OTHERS] menuscreen to
AONB.
Returning menu settings to default settings
Note：
●At the [OTHERS] menuscreen, set [MENU RESET] item to
AEXECUTEBand press the [MENU] dial to return the menu
settingsto default settings.
Menu Setting Method
MENU
STATUS
BRIGHT
CONTRAST
PEAKING
1:1
FOCUS
ASSIST
5
6
4
5
6
4
[MENU] dial
[MENU] button
-- M AIN M ENU - -
M ARKER SETT I NG . .
SHOOTING ASSIST. .
V I D EO FOR
M AT . .
OTHERS . .
EX I T
-- M ARKER SETT I NG - -
ASPECT TYPE V I DEO
RAT I O 1 6 : 9
POS I T I ON CENTER
ASPECT
M ARKER ON
TYPE L I NE+HALF
SAFETY ZONE ON
SIZE 95
%
CENTER M ARK ON
PAGE BACK
- - OTHERS - -
CA
M ERA NA M E ON
NAME ED I T HP840U
BLACK&
W HITE COLOR
M ENU RESET CANCEL
PAGE BACK
VF-HP840U_EN.book Page 11 Thursday, January 17, 2008 2:48 PM

12
Menu
The Menuscreen consistsof the following structure asshown below.
MAIN MENU Screen
Menu screen content
Menu Screen Description
MARKER SETTING .. Thisitem setsthe various markersto be displayed in the images.
SHOOTING ASSIST .. Thisitem setsthe shooting assist function.
VIDEO FORMAT .. Thisitem setsthe format for input video or return video input.
OTHERS .. Thisitem setsthe camera name and initializesthe menu.
EXIT Thisreturnsto the normal screen.
-- M ARKER SETT I NG - -
ASPECT TYPE V I DEO
RATIO 16:9
POS I T I ON CENTER
ASPECT
M ARKER ON
TYPE L I NE+HALF
SAFETY ZONE ON
SIZE 95
%
CENTER M ARK ON
PAGE BACK
-- M AIN M ENU - -
M ARKER SETT I NG . .
SHOOTING ASSIST. .
V I D EO FOR
M AT . .
OTHERS . .
EX I T
- - SHOOTING ASSIST - -
FOCUS ASS I ST BLUE
LEVEL M IDDLE
ZEBRA 2PATTERNS
TOP1 8 0
%
BOT TO M 170 %
TOP2 OVER
BOT TO
M 280 %
PEAK I NG FREQ . M IDDLE
PAGE BACK
-- VIDEO FOR M AT - -
INPUT SIGNAL CO
M PONENT
FRAME RATE 60
FOR
M AT 720P
ASPECT [SD ] 4 : 3
RET V I DEO SD
PAGE BACK
- - OTHERS - -
CA
M ERA NA M E ON
NAME ED I T HP840U
BLACK&
W HITE COLOR
M ENU RESET CANCEL
PAGE BACK
VF-HP840U_EN.book Page 12 Thursday, January 17, 2008 2:48 PM

13
MARKER SETTING Menu Screen
Settingsin bold are factory default settings.
Item Setting ValueDescription
ASPECT TYPE VIDEO
CINEMA
Thisitem setsthe purpose of the marker.
VIDEO : Aspect for TV broadcast shooting
CINEMA : Aspect for cinema shooting
Note：
● When the input format is4:3, A CINEMA B cannot be selected.( [VIDEO] isdisplayed.)
RATIO When ASPECT
TYPE is set to
AVIDEOB
16:9
4:3
14:9
16:9+4:3
Thisitem setsthe aspect ratio of the marker. It displaysthe configured aspect
ratio of the marker. When set to A16:9+4:3B, the 16:9 and 4:3 marker are
displayed at the same time.
Note：
●A16:9+4:3Bisdisplayed when the VIDEO FORMAT at the camera isHD
mode.
When ASPECT
TYPE is set to
ACINEMAB
2.35:1
1:66:1
1:75:1
1:85:1
POSITION CENTER
C.HEADRM
Thisitem setsthe display position of the marker.
CENTER : Setsthe display position of the marker at the center of the screen.
C.HEADRM : Setsthe display position of the marker at the upper side of the screen.
Note：
●AC.HEADRMBcan only be set when [RATIO] isA2.35:1Bor A1:85:1B. For
other settings, [CENTER] will be displayed and setting isdisabled.
ASPECT MARKER OFF
ON
Thisitem setsthe marker outside the aspect area.
OFF : Cancelsthe marker outside the aspect area.
ON : Displaysthe marker outside the aspect area.
Note：
●When connected to GY-HD250U and [VF SIGNAL] isset to ARGBBat the
camera LCD/VF MENU screen, set SAFETY ZONE at the camera to
AOFFB. Settingsat VF will be invalid.
●When camera output isset to BARS, thisfunction isAOFFBduring Return
Video display, 1:1 display and when status display isOFF.
TYPE LINE
HALFTONE
LINE+HALF
Thisitem setsthe type of labeling for markersoutside the aspect area.
LINE : Displaysthe aspect area in lines.
HALFTONE : Displaysthe image level outside the aspect area in half the
brightness.
LINE+HALF : Displaysthe aspect area in linesand setsoutside the area
in half the brightness.
SAFETY ZONE OFF
ON
Thisitem setsthe marker inside the aspect area.
OFF : Cancelsthe marker inside the aspect area.
ON : Displaysthe marker inside the aspect area.
Note：
●When connected to GY-HD250U and [VF SIGNAL] isset to ARGBBat the
camera LCD/VF MENU screen, set SAFETY ZONE at the camera to
AOFFB. Settingsat VF will be invalid.
●When camera output isset to BARS, thisfunction isAOFFBduring Return
Video display, 1:1 display and when status display isOFF.
●The above feature may not function depending on the version of the
camera'ssoftware. For details, please consult JVC'sauthorized dealers.
SIZE 95 %,
93 %, 90 %
88 %, 80 %
Thisitem setsthe display percentage for markersinside the aspect area.
CENTER MARK Thisitem setswhether to display markersin the center.
OFF : Cancelsthe center marker.
ON : Displaysthe center marker.
Note：
●When connected to GY-HD250U and [VF SIGNAL] isset to ARGBBat the
camera LCD/VF MENU screen, set SAFETY ZONE at the camera to
AOFFB. Settingsat VF will be invalid.
●When camera output isset to BARS, thisfunction isAOFFBduring Return
Video display, 1:1 display and when status display isOFF.
PAGE BACK ^Thisreturnsto the [MAIN MENU] screen
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14
Menu
SHOOTING ASSIST Menu Screen
Settingsin bold are factory default settings.
Menu screen content
(continued)
Item Setting ValueDescription
FOCUS ASSIST RED
GREEN
BLUE
Thisitem setsthe display color of the focus section when the FOCUS ASSIST
function isoperated.
RED : Displaysthe focus section in red.
GREEN : Displaysthe focus section in green.
BLUE : Displaysthe focus section in blue.
Note：
●When connected to GY-HD250U and [VF SIGNAL] isset to ARGBBat the
camera LCD/VF MENU screen, set FOCUS ASSIST at the camera to
AOFFB. Settingsat VF will be invalid.
LEVEL LOW
MIDDLE
HIGH
Thisitem setsthe focus level during the FOCUS ASSIST operation.
LOW : Displaysthe focus section.
MIDDLE : Emphasizesthe focus section.
HIGH : Further emphasizesthe focus section.
ZEBRA OVER
1 PAT T E R N
2 PAT T E R N S
Select whether to display Zebra and the display format.
OFF : Doesnot display Zebra.
1PATTERN : Displaysthe brightness set between [TOP1] and [BOTTOM1] in
Zebra.
2PATTERNS :
In addition to [1PATTERN], thisdisplaysthe brightness set
between [TOP2] and [BOTTOM2] in Zebra.
TOP1 5 % ~ 80 % ~ 100 %
OVER
Thisitem setsthe upper limit of the brightness of Zebra 1.
5 %
~ 100 % : Displaysthe brightness below thissetting asZebra. (The value
can be set in intervalsof 5 %.)
OVER : Cancelsthe upper limit of the brightness of the displayed Zebra.
Note：
● When [ZEBRA] isset to A OFF B , [----] will be displayed and setting isdisabled.
BOTTOM1 0 % ~ 70 % ~ 100 % Thisitem setsthe lower limit of the brightness of Zebra 1.
0 % ~ 100 %: Displaysthe brightness above thissetting asZebra. (The value
can be set in intervalsof 5 %.)
Note：
● When [ZEBRA] isset to A OFF B , [----] will be displayed and setting isdisabled.
TOP2 5 % ~ 100 %
OVER
Thisitem setsthe upper limit of the brightness of Zebra 2.
5 % ~ 100 % : Displaysthe brightness below thissetting asZebra. (The value
can be set in intervalsof 5 %.)
OVER : Cancelsthe upper limit of the brightness of the displayed Zebra.
Note：
●When [ZEBRA] isset to AOFFBor A1 PAT T ER N B, [----] will be displayed and
setting isdisabled.
BOTTOM2 0 % ~ 80 % ~ 100 % Thisitem setsthe lower limit of the brightness of Zebra 2.
0 % ~ 100 % : Displaysthe brightness above thissetting asZebra. (The value
can be set in intervalsof 5 %.)
Note：
●When [ZEBRA] isset to AOFFBor A1 PAT T ER N B, [----] will be displayed and
setting isdisabled.
PEAKING FREQ. LOW
MIDDLE
HIGH
Thisitem setsthe frequency band where the contour isemphasized with the
[PEAKING] control.
LOW : Emphasizesthe low frequency band.
MIDDLE : Emphasizesthe intermediate frequency band.
HIGH : Emphasizesthe high frequency band.
PAGE BACK ^Thisreturnsto the [MAIN MENU] screen.
VF-HP840U_EN.book Page 14 Thursday, January 17, 2008 2:48 PM

15
VIDEO FORMAT Menu Screen
Settingsin bold are factory default settings.
OTHERS Menu Screen
Settingsin bold are factory default settings.
Item Setting ValueDescription
INPUT SIGNAL COMPONENT
RGB
AUTO
Select the input signal method of the [VF CABLE] terminal.
COMPONENT: InputsYPbPr signals.
RGB : InputsRGB signals. (FORMAT isfixed at [480I] or [576I].)
AUTO : Automatically recognizesinput signals. When the screen isnot
output normally with Auto Recognition, set to other setting.
Note：
● The above feature may not function depending on the version of the
camera’ssoftware. For details, please consult JVC’sauthorized dealers.
FRAME RATE 60
50
Thisitem setsthe frame rate of the input signals.
60: Select thiswhen the frame rate of the input signalsis60 Hz.
50: Select thiswhen the frame rate of the input signalsis50 Hz.
FORMAT When FRAME
RATE is set to
60
1080I
720P
480I
Select the format of the input signals.
1080I : Select thiswhen the input signal isHD1080i.
720P : Select thiswhen the input signal isHD720P.
480I : Select thiswhen the input signal isSD480i.
576I : Select thiswhen the input signal isSD576i.
When FRAME
RATE is set to
50
1080I
720P
576I
ASPECT[SD] 4:3
16:9
Thisitem setsthe aspect of the screen display when SD signalsare
input.
4:3 : Displays4:3 input signalsas-is.
16:9 : Displays4:3 imagesin 16:9. Thisisvalid when the input
signalsare at SQUEEZE.
RET VIDEO SD
720P
1080I
Select the signal format of the return video signals.
SD : Select thisduring composite video signal input. Signalswill be
output in black and white on the monitor.
720P : Select thisduring HD720P Y signal input.
1080I : Select thisduring HD1080i Y signal input.
PAGE BACK ^Thisreturnsto the [MAIN MENU] screen
Item Setting ValueDescription
CAMERA NAME OFF
ON
Thisitem setswhether to display the camera name on the STATUS screen.
OFF : Doesnot display.
ON : Display.
Note：
●The camera name isnot displayed during MENU display.
NAME EDIT A to Z, 0 to 9, - . / [ ] Enter the camera name.
Up to 6 characterscan be entered. (APage 11)
The default setting isAHP840UB.
BLACK & WHITE COLOR
B&W
Thisallowsthe imagesto be viewed in black and white.
COLOR : Displayscolor images.
B&W : DisplaysB&W images.
Note：
●When connected to GY-HD250U and [VF SIGNAL] isset to ARGBBat the
camera LCD/VF MENU screen, set BLACK & WHITE at the camera to
ACOLORB.
MENU RESET CANCEL
EXECUTE
Thisitem returnsall menusettingsto factory default settings.
CANCEL : CancelsMenuReset.
EXECUTE : ExecutesMenuReset.
PAGE BACK ^Thisreturnsto the [MAIN MENU] screen.
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16
Others
䡵Items that must be set at the camera
䡵Items with restricted operation at VF-HP840U depending on camera settings
*1 The above feature may not function depending on the version of the camera’ssoftware. For details, please consult JVC’s
authorized dealers.
VF Terminal
20-pin Connector
DC INPUT Terminal
4-pin Connector
Precautions when using
with GY-HD250U
Setting Item Setting ValueRemarks
VF SIGNAL Set to ARGBBor ACOMPONENTB
TALLY SYSTEM Set to ASTUDIOBOperation isalso possible with
settingsother than ASTUDIOB*1
Setting Item Setting ValueRestricted Operation
VF SIGNAL RGB When the following functionsare valid under GY-HD250U setting, the settingsin
thisproduct will be invalid. *1
SAFETY ZONE, ZEBRA, FOCUS ASSIST, BLACK & WHITE
COMPONENT When the following functionsare valid under GY-HD250U setting, the settingsin
thisproduct will be invalid.
ZEBRA
When connected to GY-HD250U, SKIN COLOR ADJUST screen displayed from
camera cannot be adjusted via thisunit. When adjustment isrequired, adjust via
the camera.
TALLY SYSTEM STUDIO The TALLY lamp displaysTALLY(PGM/PVM), CALL and warning from the
remote control. *1
Other than STUDIO The TALLY lamp displaysthe VTR operation status and warning.
Terminal Specifications
Pin No. Name Level IN/OUT
1 B/Pb 1 Vp-p IN
2GND ^^
3 +12 V +12 V IN
4GND ^^
5 VF ON/OFF +12 V IN
6 G/Y 1 Vp-p IN
7GND ^^
8 RM TALLY +3 V IN
9 RM PREVIEW TALLY +3 V IN
10 SDATA OUT +3 V OUT
11 R/Pr 1 Vp-p IN
12 GND ^^
13 SCLK +3 V IN
14 SDATA IN +3 V IN
15 SCS +3 V IN
16 +12 V +12 V IN
17 GND ^^
18 NC ^^
19 COM.DET 0 V IN
20 NC ^^
Pin No. Name Level IN/OUT
1GND ^^
2NC ^^
3NC ^^
4 +12 V +12 V IN
345
2
1
8910
7
6
13 14 1512
11
18 19 2017
16
1
23
4
345
2
1
8910
7
6
13 14 15 12
11
18 19 20
17
16
[VF CABLE] connector [DC INPUT] connector
VF-HP840U_EN.book Page 16 Thursday, January 17, 2008 2:48 PM

17
Yo ucan switch the setting (factory setting) for certain functions.
All DIP switchesare set to "OFF" in the factory settings.
Method of opening
Remove the two screwsfastening the cover on the bottom of
thisproduct and open the cover.
Caution：
●Be sure to turn off the power before changing the settingsof
the DIP switches.
Note：
●Use the factory settingswhen connecting to the GY-HD250U
with KA-HD250U system.
䡵DIP Switch 1
Setting for the power supply function
䡵DIP Switch 2
Reserved switch. Make sure that thisisset to “OFF” during use.
䡵DIP Switch 3
Reserved switch. Make sure that thisisset to “OFF” during use.
䡵DIP Switch 4
Setting for the 75Ktermination function
Setting Selection DIP Switch
Cover
Screw
Bottom view
Function Setting to ON/OFF the backlight function when the
power issupplied from the [DC INPUT].
Setting OFF To ON/OFF the backlight
relative to the [POWER]
switch on the camera.
ON Doesnot OFF the backlight
even when the [POWER]
switch on the camera isset
to OFF.
Function Setting to ON/OFF the 75Ktermination for the
input video signals(excluding return video
signals).
Setting OFF With 75Ktermination
ON Without 75Ktermination (Set
to “ON” when connecting to
KA-HD250U.)
Troubleshooting
Troubleshooting Check Point
Power doesnot turn on Insert the VF cable or power cable fully.
Turn on the power supply of GY-HD250U/RM-HP250U.
There are no images.Insert the VF cable fully.
Turn on the power supply of GY-HD250U/RM-HP250U and set the correct
settings.
The color isfunny/There isno color Insert the VF cable or power cable fully.
Adjust the [CONTRAST] and [BRIGHT] of the image adjustment controls.
Are the settingsfor VF SIGNAL at the camera and those for INPUT SIGNAL at
VF-HP840U wrong? Set the correct settings.
Blurry imagesAdjust the [BRIGHT] and [PEAKING] of the image adjustment controls.
The field angle size of the viewfinder is
wrong
Check the settingson page 15.
The imagesappear to be in chaosCheck the settingson page 15.
Zebra display isinccorect Isthe Zebra setting at the camera set to AONB? Set to AOFFB. See page 14.
When the [FOCUS ASSIST] button is
pressed, APLEASE CHECK CAMERA
SETTINGBisdisplayed.
Set the FOCUS ASSIST function on the camera to AOFFB.
VF-HP840U_EN.book Page 17 Thursday, January 17, 2008 2:48 PM

18
Others
䡵General
Connected Target Equipment : KA-HD250U
Power Supply : 12 V DC (11 V DC to
18 V DC)
Power Consumption : Approx. 13 W and below
Ambient Temperature : 0 °C to 40 °C
Allowable Operating Humidity : 30 % RH to 80 % RH
Mass :1.6kg(excluding hood)
1.9 kg(including hood)
Dimension : W 261 x D 96 x H 261 mm
(excluding hood)
W 261 x D 195 x H 261 mm
(including hood)
䡵LCD Specifications
Screen Size : 8.4 Inch
Aspect Ratio : 4:3
LCD Panel : TFT-LCD
Resolution : 1024 x 768 dots(XGA)
Display Color : Approx. 16.77 million
colors
View Angle (Standard) : 60°/50°/65°/65°
(Top/Bottom/Left/Right)
Brightness : 300 cd/m²
Contrast Ratio : 400:1
Supported Video Signal Format : 480/60i (NTSC), 720/
60P, 1080/60i, 576/50i
(PAL), 720/50P, 1080/50i
䡵Input Terminal
Return Video Input:Composite signalsor
HDTV component signals
(Y signal only)
1 V(p-p), 75 K,
unbalanced (BNC)
DC INPUT : 12 V DC, 1.08 A and
below
䡵Accessories
Instruction Manual 1
Warranty Card 1
VF Cable 1
Hood Cover 1
Specifications
VF-HP840U_EN.book Page 18 Thursday, January 17, 2008 2:48 PM

19
Dimensional Outline Drawing (Unit: mm)
The specificationsand appearance of thisproduct and other related productsmay be modified for improvement without prior notice.
With Hood Without Hood
261
130
261
195
184
90
67
12
MENU
STATUS
BRIGHT
CONTRAST
PEAKING
1:1
FOCUS
ASSIST
5
6
4
5
6
4
5
6
4
VF-HP840U_EN.book Page 19 Thursday, January 17, 2008 2:48 PM

LST0662-001B
VF-HP840U VIEWFINDER
ᆠ؆༃MDEᅳჸධ
© 2008 Victor Company of Japan, Limited
贩卖商名 杰伟世 （中国）投资有限公司
住址 北京市朝阳区光华路 12A 号北京科伦大厦 316 室
出版日 2008 年2月1日
日本 JVC 公司
VF-HP840U_EN.book Page 20 Thursday, January 17, 2008 2:48 PM