Quasar CM-4251 Series User And Installation Manual page 103

Quasar CM-4251 Series User and Installation Guide

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.
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.
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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 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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