JVC TK-C1460B - Manual (Page 22)

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White spot compensation
CCDs have the general characteristic that white spots appear on the screen when the CCD is
operated at high temperatures or when they are used with a slow shutter speed.
This unit has a built-in white spot compensation function to reduce these white spots.
(The number and the size of the white spots changes according to the use temperature, the
shutter speed, etc. Furthermore, there is a limit on the number of white spots that can be
compensated.)
Operation method
1. Attach a lens cap or similar.
• Prevent entry of light to the CCD.
• Switch on the camera power supply
and wait for at least 30 minutes.
2. Display the MAINTENANCE
screen.
• Confirm that the cursor (>) is at the item
CCD SPOT.
3. Press the SET button.
• The CCD SPOT screen will be dis-
played.
• If you do not want to perform white spot
compensation, move the cursor (>) to
CANCEL and press the SET button.
4. Move the cursor (>) to EXECUTE.
5. Press the SET button.
• White spot compensation will operate.
(“SPOT SCAN OPERATION” is dis-
played during operation.)
6. Confirm the display.
• When white spot compensation has
been performed correctly, “SPOT
SCAN OK” is displayed for about 5
seconds, and then return is made to
the CCD SPOT screen.
• When “SPOT SCAN ERROR: HIGH
LIGHT” is displayed, check that no light
enters into the CCD.
7. Press the MENU button.
• Return to the MENU screen will be
made.
I N MA T E NA N C E
C C S P OT . . D
D C C S P OT
C A E L NC
E X C TE U E
h e a t u p 3 0 m i n i n a d v a n c e
n e e d L e n s – c a p t o e x e c u t e
S P T SCAN OK O
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Image pickup device: 1/2 type IT CCD, 752 (H) × 582 (V)
Synchronization method : Internal, Line lock, Full Genlock
Scanning frequency: (H) 15.625 kHz, (V) 50 Hz
Resolution: 480 TV lines (H)
VIDEO OUT: Composite video signal 1 V (p-p), 75 Ω (BNC)
Y/C OUT: Y: 0.7 V (p–p), 75 Ω
C: 0.3 V (p–p), 75 Ω
Video S/N ratio: 50 dB (AGC OFF)
Minimum required illumination: 0.6 lx (50 %, F1.2, AGC 20 dB)
0.3 lx (50 %, F1.2, AGC 20 dB, LOLUX MODE)
0.3 lx (25 %, F1.2, AGC 20 dB)
0.15 lx (25 %, F1.2, AGC 20 dB, LOLUX MODE)
0.02 lx (50 %, F1.2, AGC 20 dB, B&W MODE)
0.01 lx (50 %, F1.2, AGC 20 dB, LOLUX MODE, B&W MODE)
0.019 lx (50 %, F1.2, AGC 20 dB, SENSE UP × 32)
0.01 lx (50 %, F1.2, AGC 20 dB, LOLUX MODE, SENSE UP × 32)
Communication: RS-422A or RS-485 (switchable)
9600 bit/s
Lens mount: C/CS mount
Power supply and power consumption: AC 24 V ` 50 Hz/60 Hz, DC 12 V — --- 550 mA
Ambient temperature: –10 °C to 50 °C (operation)
0 °C to 40 °C (recommended)
Mass: 640 ˝
Accessory: Instructions .................... 2 Ferrite core ..................... 1
4P plug .......................... 1
Specifications
Design and specifications are subject to change without notice.
OTHERS
DIMENSIONS (Unit: mm)
71
70
55
63
42
138
149
41
U1-32 39
35
1/4 – 20UNC