Lens Adjustment; Specifications - JVC TK-C1310E Service Manual

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VICTOR COMPANY OF JAPAN, LIMITED
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is a Registered Trademark owned by VICTOR COMPANY OF JAPAN, LTD.
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is a Registrated Trademark in Japan,the U.S.A., the U.K. and many other countries.
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©1999VICTOR COMPANY OF JAPAN, LIMITED

LENS ADJUSTMENT

Video adjust
Connect the camera according to the connection method, turn it on, display an image on the
monitor, and check the image. The camera has been factory-adjusted to the best position, but it
may need to be adjusted according to the object conditions or combination of lenses. If the image
is unnatural, adjust it as follows:
• LEVEL adjustment
Monitor screen
Too bright
Too dark
• ALC adjustment
Monitor screen
Part (high-intensity part) of the screen halates.
Other part of screen (except high-intensity part) darkens.
• If the sensitivity adjustment LEVEL is turned excessively to L, the sensitivity increases be-
cause of the AGC function of the camera, and the image looks grainy.
• If the video iris lens is set to too low a level, malfunction such as the hunting phenomenon, in
which the iris opens or closes unintentionally, may occur.
In such a case, first set LEVEL potentiometer on the lens to the H (iris open) position then
adjust it to the optimum level.
Back focus adjustment
The back focus has been factory-adjusted to the best point for CS-mount lens, but it
may need to be re-adjusted if the mount is changed to the C-mount or if a different lens
is used. If required, adjust it as follows:
• With a fixed-focus lens
If the focus can not be adjusted correctly by rotating the lens focus ring, adjust the back focus as
follows.
1. Loosen the back focus locking screw by turning it counterclocckwise (
2. Turn the back focus adjustment ring to focus at the best point.
3. Tighten the back focus locking screw by turning it clockwise (
• With a zoom lens
If the image is out of focus when zooming (wide-angle telephoto), adjust the camera as follows:
1. Shoot a comparatively dark scene with thin lines about three meters away from the camera.
2. Set the lens to the maximum telephoto position, and adjust the lens focus.
3. Set the lens to the maximum wide-angle position, and adjust the focus.
4. Repeat steps 2 and 3 two or three times.
SETTING SWITCH
Line Lock
To set the camera in LL mode for synchronization with the power supply frequency, take the follow-
ing steps:
1. Turn switch 4 to "LL";
2. Turn switch 3 to "PHASE";
3. Press the + or – button 2 to make the phase variable.
Adjust with the button 2 so that the vertical phase of the camera matches the vertical phase of
another camera (or system) with a multi-channel oscilloscope.
For initial setting, press RESET button 1 .
50Hz power region only
White Balance
White balance can be adjusted within the scope of 2900 - 8000K color temperature. When switch
5 is at "AUTO", the white balance is adjusted automatically.
For manual adjustment, take the following steps:
1. Turn switch 5 to "MANU";
2. Turn switch 3 to "WHT.BAL";
3. Pressing "R" button 2 increases redness while pressing "B" increases blueness. For initial set-
ting, press RESET button 1 .
There are cases sometimes when the white balance cannot be adjusted manually for artifical
lights such as fluorescent lights, etc.
BLC (Back Light Compensation)
The switch 6 improves an image that is darkened because of backlighting.
Set this switch to ON for backlight subjects.
AES (Automatic Electronic Shutter)
Turning this switch 7 "ON" when a lens with a manual iris diaphragm is used enables the auto-
matic adjustment of image brightness. In this case the shutter speed changes according to the
brightness of the subject. AES functions only when AGC switch 8 is turned on.
Hunting may occur at a certain object brightness due to the mechanism of the AES circuit, but
this is not a fault.
AGC (Automatic Gain Control)
The switch 8 automatically increases the camera's sensitivity when the level of ambient light
drops.
ON: AGC is activated.
OFF: AGC is not activated.
For Service
Interface Connector 9 is used for service.

SPECIFICATIONS

Image pickup device : 1/2-inch interline-transfer CCD
: 440000 (752 (H) × 582 (V))
Number of effective pixels
Synchronization method : Internal
Line lock (50Hz regions only)
Scanning frequency : (H) 15.625kHz (V) 50Hz
Resolution : 470 TV line (H) Typ.
Video output : Composite video signal 1V(p-p), 75Ω, unbalanced
Video S/N ratio : 48 dB (AGC OFF)
Minimum required illumination : 0.95 lx (25%, F1.2, AGC ON)
Lens mount : C/CS mount
Power supply : AC24V
and power consumption
Ambient temperature : –10˚C to 50˚C (operation)
0˚C to 40˚C (recommended)
Mass : 510g
: 4P Plug ... ×1
Provided accessory
: Ferrite core × 1
DIMENSIONS (mm)
LEVEL turning direction
Counterclockwise (Toward L)
Clockwise (Toward H)
ALC turning direction
Clockwise (Toward Pk)
Counterclockwise (Toward Av)
) with a screwdriver.
).
~
50/60Hz DC12V 360mA
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