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G
LEVEL
ALC
H
4
1,5
J
OFF
ON-AGC
OFF
ON-AES
OFF
ON-BLC
AUTO
MAMU
DC12V
LL
INT
AC24V
1
PHASE
WHT.
BAL
CLASS 2 ONLY(U TYPE)
ISOLATED POWER ONLY
R
B
VIDEO OUT
SEE INSTRUCTION
POWER
RESET
TK-C920
K
U1-32
50
51
TK-C920
U1-32
65
42
TK-C921
®
VICTOR COMPANY OF JAPAN, LIMITED
®
is a Registered Trademark owned by VICTOR COMPANY OF JAPAN, LTD.
®
is a Registrated Trademark in Japan,the U.S.A., the U.K. and many other countries.
IRIS
VIDEO
DC
L
H
LEVEL
BF LOCK
I
OFF
ON-AGC
OFF
ON-AES
OFF
ON-BLC
AUTO
MANU
LL
INT
PHASE
WHT.
2
BAL
R
B
(E TYPE)
VIDEO OUT
SEE INSTRUCTION
MANUAL
POWER
RESET
TK-C921
126
115
BF LOCK
COLOR VIDEO CAMERA
30
1/4-20 UNC
126
115
BF LOCK
DIGITAL
COLOR VIDEO CAMERA
30
1/4-20UNC
Printed in Thailand
LWT0124-001B-H
©2004 VICTOR 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 because
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:
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 counterclockwise (
2. Shoot a pattern closely.
3. Turn the lens focus ring to .
4. Turn the back focus adjustment ring to focus at the best point.
5. Tighten the back focus locking screw by turning it clockwise (
* When using a zoom lens, adjust the focus for telephoto wide-angle and maximum wide-angle.
SETTING SWITCH
White-spot correction
As a general characteristic unique to CCD, white spots may appear on the screen. Take the follow-
ing steps in order to reduce the number of white spots.
1. Attach the lens cap, switch on the camera power supply and wait for 30 minutes.
2. Remove the sticker and press and hold the switch for more than 2 seconds using a thin rod.
* Do not use a metal rod.
* The white-spot correction feature of this unit does not guarantee the correction of all white spots.
Line Lock
(U type : 60Hz power region only
To set the camera in LL mode for synchronization with the power supply frequency, take
the following steps:
1. Turn switch
MANUAL
2. Turn switch
3. Press the + or – button
Adjust with the button
another camera (or system) with a multi-channel oscilloscope.
For initial setting, press RESET button
White Balance
White balance can be adjusted within the scope of 2300K to 10000K color temperature. When
switch
is at "AUTO", the white balance is adjusted automatically.
* When Hunting Auto Tracking White Balance symptoms occur when using an Auto iris lens with
switch positions of AGC is on, AES is on, Int-lock with AC24V Power source, turn switch
"LL".
* When Hunting Auto Tracking White Balance symptoms occur when using a Manual iris lens with
switch positions of AGC is on, AES is on, Int-lock with DC12V Power source, please adjust or
close iris ring on the lens.
For manual adjustment, take the following steps:
1. Turn switch
2. Turn switch
3. Pressing "R" button
setting, press RESET button
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
improves an image that is darkened because of backlighting.
Set this switch to ON for backlight subjects.
AES (Automatic Electronic Shutter)
Turning this switch
matic adjustment of image brightness. In this case the shutter speed changes according to the
brightness of the subject.
* 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
automatically increases the camera's sensitivity when the level of ambient light
drops.
ON: AGC is activated.
OFF: AGC is not activated.
SPECIFICATIONS
Image pickup device
Number of effective pixels
Synchronization method
Scanning frequency
Resolution
Video output
Video S/N ratio
Minimum required illumination : 0.7 lx (F1.2, AGC ON, 25%)
Lens mount
Power supply
and power consumption
Ambient temperature
Mass
DIMENSIONS (Unit: mm)
(Design and specifications are subject to change without notice.)
LEVEL turning direction
Counterclockwise (Toward L)
Clockwise (Toward H)
E/EG type : 50Hz power region only)
to "LL";
to "PHASE";
to make the phase variable.
so that the vertical phase of the camera matches the vertical phase of
.
to "MANUAL";
to "WHT.BAL";
increases redness while pressing "B" increases blueness. For initial
.
"ON" when a lens with a manual iris diaphragm is used enables the auto-
: 1/3-inch interline-transfer CCD
: TK-C920U
TK-C920E/TK-C921EG : 752 (H) × 582 (V)
: Internal
Line lock (U type 60 Hz, E/EG type 50 Hz regions only)
: U type
: (H) 15.734 kHz (V) 59.94 Hz
E/EG type : (H) 15.625 kHz (V) 50 Hz
: 535 TV line (H) Typ.
: Composite video signal 1 V (p-p), 75 , unbalanced
: 50 dB (AGC OFF)
: C/CS mount
: TK-C920U
: AC24 V
TK-C920E
: AC24 V
TK-C921EG : AC220 V-240 V
: –10˚C to 50˚C (operation)
0˚C to 40˚C (recommended)
: TK-C920: 370
TK-C921: 710
∆G
ALC turning direction
Clockwise (Toward Pk)
Counterclockwise (Toward Av)
∆H
) with a screwdriver.
).
∆I
∆J
to
: 768 (H) × 494 (V)
~
60Hz DC12 V
4.7 W
~
50/60Hz DC12 V
380 mA
~
50/60Hz, 57 mA
∆K
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