Watec WAT-902B Operation Manual - page 2
4) Connect
VIDEO OUT
⑥ on the WAT-902B to the monitor, using the coaxial cable with 75Ω impedance such as
3C2V or 5C2V.
5) Switch on the WAT-902B, monitor and all other allied equipment.
NOTE: When the picture dose not appear on the monitor screen, switch off all equipment and check for correct
connections to all the appliances.
6) Focusing
Focusing the lens of the WAT-902B is achieved while looking at the monitor screen.
NOTE: In cases when the unit can not be focused manually, use the focusing adjustment method set out below.
7) Select any required shutter speed by changing
SHUTTER
⑦
IMPORTANT NOTES ON THE MONITOR SPECIFICATIONS
: Select a monitor with the same transmissin mode as the WAT-902B.
There are two versions, EIA and CCIR.
: A monitor with 700TV lines is recommended.
Caution: Do not use a monitor which uses a video signal/power multiplex transmission cable.
IMPORTANT NOTES ON FOCUSING
: Attach the required lens on the WAT-902B and loosen the hexagonal screws
③. (3pcs.)
Be extremely careful not to drop the lens.
: Set the focus ring to the infinitive (
∞) position, and while looking at the monitor screen, move the lens forwards or
backwards to focus.
: Tighten the hexagonal focusing adjustment screws
③, (3pcs.) when focusing is completed.
IMPORTANT NOTES FOR USAGE OF AUTO IRIS LENS
: The optimal picture may not be obtained on the monitor screen due to the different kinds of lenses used which give
different angular views and contrast of objects. In this case adjustment must be made by reading through as shown below.
①Check that the required auto iris lens has the adjustment control as shown in the drawing on
the left.
②Set the ALC(Automatic Level Control) adjustment control in the center between AV and PK
on the lens using a small screw driver.
③Point the lens towards the object while looking at the screen.
Turn the LEVEL adjustment control clockwise or anti-clockwise to obtain the optimal
brightness of the object on the monitor screen.
④Turn the ALC adjustment control towards PK when the contrast of the object needs to be stronger or towards AV when
it needs to be weaker.
⑤Continually repeat the procedures ③ and ④ to obtain an optimal picture.
EXAMPLE FOR SHUTTER SWITCH USE
ON: When a fixed lens without the iris function is used.
When brightness of an object is continually variable such as continuous monitoring of the
outdoors through a 24 hour cycle.
OFF: When an auto iris lens is used.
When an optimal picture can be obtained on the monitor screen in conditions that light is less
variable such as indoors.
FL:
When a flickering phenomenon on the monitor screen is caused by a source such as
fluourescent or mercury lighting.
NOTE: Select the most appropriate function out of the above three that correspond to your required monitoring.
: Smear phenomenon (a portion of an object with high brightness projecting bright trails up and downwards) appears
on the monitor screen, when an object with high brightness is monitored. (especially in the ON position) This dose
not mean the camera is damaged. This is normal.
8)
AGC OFF/ON
⑩ switch and
AGC Lo/Hi
⑪ switch
NOTE: Check that AGC is in the ON-Lo position (upon shipment) as for normal use.
: Select the AGC OFF position to improve S/N(noise level) in an environment whitch is unnecessary for AGC
control.
: Select the AGC ON-Hi position to enlarge the AGC range by two iris stops when the WAT-902B is used in
a dark environment.
: S/N ratio deteriorates in the AGC ON-Hi position as compared with the AGC ON-Lo position.
9) Back Light Compensation switch
⑨
The WAT-902B is provided with back light compensation function, which is very useful in certain environments.
NOTE: Check that BLC
⑨ switch is OFF (upon shipment) as for normal use.
This function restricts the range of the light measured on the monitor screen. when the auto iris lens is used
or SHUTTER
⑦ switch is ON.
When Back Light Compensation
⑨ switch is OFF, the whole monitored screen area is in use as the light
measurement area as shown in the below and left drawing. When Back Light Compensation
⑨ switch is ON,
the central and the lowest parts on the monitored screen area is used for this function as shown below on the
drawing on the right.
Example
If there is bright sunshine or bright ilumination behind the object monitored, the back light compensation
switch should be implemented.
The middle square and lower 3 squares will appear darker and therefore, improve visibility of the monitored
object.
10)
Γ
OFF/ON
⑫ switch
The WAT-902B is provided with
Γ OFF/ON⑨ switch, whitch is very useful for required purposes.
NOTE: Check that the
⑫ switch is ON (upon shipment) for normal use.
: Use the
⑫ switch in the OFF position, when you want to enhance the brightness of a monitored object in a
dark environment.
: Be careful; the monitored picture may not be true due to change of tone characteristics, when the
⑫ switch is
OFF.
(AGC OFF)
AGC is OFF which represents
10dB at a fixed gain regardless of
the position of AGC Lo/Hi
⑪
switch.
(AGC ON-Lo)
The gain circuit varies in a range
between 5 and 20dB which is
controlled by AGC.
(AGC ON-Hi)
The gain circuit varies in a range
between 5 and 32dB which is
controlled by AGC.
The left drawings show differeces in the light
measurement range in the OFF/ON switching
positions.
When the Back Light Compensation
⑨switch
is ON, the central section and all the sections in
the lowest row which are divided into three
sections, are used for the light measurment
against the object monitored.
(The sections of slant lines are light
measurment ranges.)
BLC OFF
BLC ON
SPECIFICATIONS:
Model
Pick-up element
Number of total pixels
Number of effective pixels
Unit cell size
Sync system
Scanning system
Video output
Resolution
Minimum illumination
S/N ratio
ON(EI)
Shutter
OFF
FL
AGC
ON
OFF
Gamma characteristic
Back light compensation
Power supply
Current
Storage temperature
Operating temperature
Weight
WAT-902B (EIA)
WAT-902B (CCIR)
1/2" Interline transfer CCD image sensor
811(H)
×
508(V) 795(H)
×
596(V)
768(H)
×
494(V) 752(H)
×
582(V)
8.4
μm
(H)
×
9.8
μm
(V) 8.6
μm
(H)
×
8.3
μm
(V)
Internal
2:1 Interlace
1Vp-p 75
Ω
(Unbalanced)
570TV Lines
0.01 Lux F1.4 (AGC Lo) 0.003 Lux F1.4 (AGC Hi)
50dB (AGC off,
Γ
=1)
1/60~1/100000 sec. 1/50~1/100000 sec.
1/60 sec. 1/50 sec.
1/100 sec. 1/120 sec.
AGC Lo: 5~20dB, AGC Hi: 5~32dB
OFF: 10dB
Γ
≒
0.45 (ON), 1.0 (OFF) selectable
ON/OFF selectable
DC
+
12V
±
10%
135mA
−
30
℃〜+
70
℃
−
10
℃〜+
40
℃
Approx. 90g
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.
Important:
The camera mentioned above does not comply with this regulation, if it is modified at your disposal.
Design and specifications are subject to change without notice.
WATEC is not responsible for any inconvenience or the attendant damages to the video, audio and monitoring recording equipment,
caused by misuse, misoperation or inproper wiring of our equipment.
If for any reason the WAT-902B does not work properly, or if you have any questions regarding installation or operation,
please contact the distributor or dealer from which it was purchased.
Watec Co.,Ltd.
Address : 254-2, Nihonkoku, Daihoji, Tsuruoka-Shi, Yamagata-Ken, 997-0017 JAPAN.
Phone : +81-235-23-4400 Fax : +81-235-23-4409