Installation guide

Quasar CM-4251 Series User and Installation Guide
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 Shutter Priority – When selecting this mode, a fixed exposure is set, while other parameters
can change. The shutter speed range is from 1 to 1/500 sec (NTSC) and 1/1.5 to 1/425 sec
(PAL). See table below showing all the options.
Shutter Speed Priority
PAL
NTSC
1/425
1/500
1/300
1/350
1/215
1/250
1/150
1/180
1/120
1/120
1/100
1/100
1/75
1/90
1/50
1/60
1/25
1/30
Manual Mode (Fixed Shutter)
Manual Mode opens the iris completely with a fixed gain. Users can select a suitable shutter speed
according to the environmental luminance. The fixed shutter speed is selected from 1 to 1/10000 sec
(NTSC) and 1/1.5 to 1/10000 sec (PAL). Users should select suitable shutter speed according to the
environmental luminance. See following table, which shows all the options.
Manual Mode -
Fixed Shutter Speeds
PAL
NTSC
1/10000
1/10000
1/3500
1/3000
1/2500
1/2000
1/1250
1/1000
1/600
1/725
1/425
1/500
1/300
1/350
1/215
1/250
1/150
1/180
1/120
1/120
1/100
1/100
1/75
1/90
1/50
1/60
1/25
1/30
1/12
1/15
1/6
1/8
1/3
1/4
1/1.5
1/2
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