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 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 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 (
) 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 (
).
• With a zoom lens
If the image is out of focus when zooming (telephoto wide-angle), adjust the camera as follows:
1. Loosen the back focus locking screw by turning it counterclocckwise (
) with a screwdriver.
2. Shoot a comparatively dark scene with thin lines.
3. Set the lens to the maximum telephoto position, and adjust the lens focus.
4. Set the lens to the maximum wide-angle position, and turn the back focus ring to adjust the
focus.
(Repeat steps 2 and 3 two or three times.)
5. Tighten the back focus locking screw by turning it clockwise (
).
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
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
.
TK-C720TPU: 60Hz power region only
TK-C720TPE: 50Hz power region only
White Balance
White balance can be adjusted within the scope of 2900K to 8000K color temperature. When
switch
t
is at “AUTO”, the white balance is adjusted automatically.
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” button
w
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)
Turning 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. AES functions only when AGC switch
i
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
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
TK-C720TPU : 768 (H)
×
494 (V)
TK-C720TPE : 752 (H)
×
582 (V)
Synchronization method
: Internal
Line lock (TK-C720TPU 60 Hz, TK-C720TPE 50 Hz regions only)
Scanning frequency
: TK-C720TPU: (H) 15.734 kHz (V) 59.94 Hz
TK-C720TPE: (H) 15.625 kHz (V) 50 Hz
Resolution
: 470 TV line (H) Typ.
VIDEO OUT
: 1.2 V(p-p), 100
Ω
, balanced
MONITOR output
: Composite video signal 1 V (p-p), 75
Ω
, unbalanced
Video S/N ratio
: 50 dB (AGC OFF)
Minimum required illumination : 1.5 lx (25%, F1.2, AGC ON), 3.0 lx (50%, F1.2, AGC ON)
Lens mount
: C/CS mount
Power supply
: TK-C720TPU : AC 24 V
`
60 Hz DC 12 V
4.4W
and power consumption
TK-C720TPE : AC 24 V
`
50 Hz/60 Hz DC 12 V
360mA
Ambient temperature
: –10˚C to 50˚C (operation)
0˚C to 40˚C (recommended)
Mass
: 380
g
Provided accessory
: 4 PIN PLUG ....................................................
×
1
WARRANTY CARD (TK-C720TPU only) .......
×
1
DIMENSIONS (Unit: mm)
(Design and specifications are subject to change without notice.)
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)
LWT0035
©2002 VICTOR COMPANY OF JAPAN, LIMITED
∆
G
∆
H
∆
I
∆
J
®
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.
®
BF LOCK
IRIS
VIDEO
DC
L
H
LEVEL
ALC
LEVEL
Av Pk
L H
ALC
LEVEL
1,5
4
G
I
J
H
1
2
4
3
5
6
7
8
[: mm]
123
115
30
1/4-20 UNC
U1-32
50
58
50
42
32.5
