American Dynamics SpeedDome Optima LT Installation And Service Manual page 15

Camera
Monochrome/Color
Type................................ Interline transfer
1/4" CCD array
Scanning Area................. 3.2 (H) x2.4 (V) min.
Scanning System............. 2:1 interlace
Video Out ....................... 1.0Vp-p/75 ohm composite
Signal-to-Noise ............... 48dB (typical)
Monochrome only
Horizontal Resolution ..... 380 lines at center
Minimum Illumination .... 0.1 lux (AGC on) at f1.6
AGC................................ >24dB
EIA
Pickup Device................. 510 (H) x 492 (V) pixels
Scanning ......................... 525 lines, 60 fields, 30 frames
Horizontal ....................... 15.734 kHz
Vertical ........................... 59.9 Hz internal sync
CCIR
Pickup Device................. 510 (H) x 582 (V) pixels
Scanning ......................... 625 lines, 50 fields, 25 frames
Horizontal ....................... 15.625kHz
Vertical ........................... 50Hz
Color only
Horizontal Resolution ..... >450 lines at center
Minimum Illumination .... 2.25 lux (AGC on) at f1.6
White Balance................. Through-the-Lens (TTL) Auto
Tracing White balance (ATW)
NTSC
Pickup Device................. 768 (H) x 494 (V) pixels
Scanning ......................... 525 lines, 60 fields, 30 frames
Horizontal ....................... 15.734kHz
Vertical ........................... 59.9 Hz internal sync
PAL
Pickup Device................. 752 (H) x 582 (V) pixels
Scanning ......................... 625 lines, 50 fields, 25 frames
Horizontal ....................... 15.625kHz
Vertical ........................... 50Hz
Lens
Design............................. Aspherical
Focal Length ................... 4 to 48 mm
Aperture .......................... f1.6
Viewing Angle*
4 mm ............................... 47.0°(H) x 35.2°(V)
48 mm ............................. 4.0°(H) x 3.0°(V)
*Equivalent to 8mm to 80mm on 1/2 in. CCD array.
Field-of-View Formulas:
Horizontal view = (3.2 x a)/b
Vertical view = (2.4 x a)/b
where a = distance from camera in meters or feet
where b = focal length (mm)
Example of a wide angle view with the lens at 4mm at
10m (30.5') from the camera:
(3.2mm x 10m)/4mm = 8m (24.4') horizontal view
(2.4mm x 10)/4mm = 6m (18.3') vertical view
SPEEDDOME LT
1-10
INTRODUCTION