Monitor screen ALC turning direction
Part (high-intensity part) of the screen halates. Clockwise (Toward Pk)
Other part of screen (except high-intensity part) darkens. Counterclockwise (Toward Av)
Monitor screen LEVEL turning direction
Too bright Counterclockwise (Toward L)
Too dark Clockwise (Toward H)
©2004 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.
®
VICTOR COMPANY OF JAPAN, LIMITED
BF LOCK
IRIS
VIDEO
DC
LH
LEVEL
ALC
LEVEL
Av Pk
L H
ALC
LEVEL
1,5
4
COLOR VIDEO CAMERA
BF LOCK
126
115
30
1/4-20 UNC
U1-32
50
50
58
32.5
51
G
J
K
HI
COLOR VIDEO CAMERA
DIGITAL
BF LOCK
126
115
65
U1-32
42
30
35
55
62.5
1/4-20UNC
RB
DC12V
AC24V
21
VIDEO OUT
SEE INSTRUCTION
MANUAL
POWER RESET
OFF
OFF
OFF
AUTO
LL
PHASE
WHT.
BAL
INT
MAMU
ON-BLC
ON-AES
ON-AGC
CLASS 2 ONLY(U TYPE)
ISOLATED POWER ONLY
(E TYPE)
1
2
4
3
5
6
7
8
OFF
ON-AGC
ON-AES
ON-BLC
MANU
INT
WHT.
BAL
OFF
OFF
AUTO
LL
PHASE
RESET
RB
POWER
VIDEO OUT
SEE INSTRUCTION
MANUAL
1
4
3
5
6
7
8
Printed in Thailand
LWT0124-001B-H
TK-C920
TK-C921
TK-C920 TK-C921
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
• ALC adjustment
* 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 (
) with a screwdriver.
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 E/EG type : 50Hz power region only)
To set the camera in LL mode for synchronization with the power supply frequency, take
the following steps:
1. Turn switch r to “LL”;
2. Turn switch e to “PHASE”;
3. Press the + or – button w to make the phase variable.
Adjust with the button w 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 q.
White Balance
White balance can be adjusted within the scope of 2300K to 10000K color temperature. When
switch t 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 r to
“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 t to “MANUAL”;
2. Turn switch e to “WHT.BAL”;
3. Pressing “R” button w increases redness while pressing “B” increases blueness. For initial
setting, press RESET button q.
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 y improves an image that is darkened because of backlighting.
Set this switch to ON for backlight subjects.
AES (Automatic Electronic Shutter)
Tu r ning this switch u "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.
* 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 i 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 : 1/3-inch interline-transfer CCD
Number of effective pixels : TK-C920U : 768 (H) × 494 (V)
TK-C920E/TK-C921EG : 752 (H) × 582 (V)
Synchronization method : Internal
Line lock (U type 60 Hz, E/EG type 50 Hz regions only)
Scanning frequency :U type : (H) 15.734 kHz (V) 59.94 Hz
E/EG type : (H) 15.625 kHz (V) 50 Hz
Resolution : 535 TV line (H) Typ.
Video output : Composite video signal 1 V (p-p), 751, unbalanced
Video S/N ratio : 50 dB (AGC OFF)
Minimum required illumination : 0.7 lx (F1.2, AGC ON, 25%)
Lens mount : C/CS mount
Power supply : TK-C920U : AC24 V
~
60Hz DC12 V 4.7 W
and power consumption TK-C920E : AC24 V
~
50/60Hz DC12 V 380 mA
TK-C921EG : AC220 V-240 V
~
50/60Hz, 57 mA
Ambient temperature : –10˚C to 50˚C (operation)
0˚C to 40˚C (recommended)
Mass : TK-C920: 370 g
TK-C921: 710 g
DIMENSIONS (Unit: mm)
(Design and specifications are subject to change without notice.)
∆G
∆H
∆I
∆J
∆K
