Model

RA-20BE

RA-20BQ

RA-20BH

RA-20BS

RA-20BP

Image sensor

1/3"SONY CCD

1/3"SONY CCD

1/3"SONY CCD

1/3"SONY CCD

1/3"SHARP CCD

Horizontal resolution

700TVL

520TVL

480TVL

420TVL

420TVL

Total number of like (HxV)

NTSC : 510(H) x 492(V) PAL : 500(H) x 582(V)

Scanning system

NTSC : PAL :

Scanning modes

2:1 interlace scan

Minimum illumination

0.001 LUX

0.5 LUX

0.5 LUX

0.8 LUX

0.8 LUX

Signal-to-noise ratio

≥ 52dB (AGC Off)

≥ 48dB (AGC Off)

Synchronization mode

In the synchronization

Electronic shutter

NTSC : 1/60 sec / PAL : 1/50 sec

Gamma correction

γ = 0.45

Output frequency range

1.0 Vp-p Composite (75?)

Automatic gain control

Automatic

Night visual range

20 m

Infrared lamps turned on

0.01LUX