Quasar CM-4251 Series User And Installation Manual page 102

Auto Mode
There are three settings within Auto Mode:

Auto Iris Min Shutter Speed – When selecting this mode, the shutter is completely open and
the exposure priority is given to the iris. Shutter speed and AGC circuit function
automatically in cooperating with the iris to achieve a consistent exposure output.
The shutter speed range is from 1 to 1/30 sec (NTSC) and 1/1.5 to 1/25 sec (PAL). See the
table below showing all the options.

Auto Shutter Min Shutter Speed – When selecting this mode, the camera's shutter speed
works automatically to achieve a consistent video output level. Users can select a suitable
shutter speed according to the environmental luminance.
The shutter speed range is from 1 to 1/500 sec (NTSC) and 1/1.5 to 1/425 sec (PAL). See
following table, which shows all the options.
Auto Iris -
Min Shutter Speed
PAL NTSC
1/25 1/30
1/12 1/15
1/6 1/8
1/3 1/4
1/1.5 1/2
1
Auto Shutter –
Min Shutter speed
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
1/12 1/15
1/6 1/8
1/3 1/4
1/1.5 1/2
1
Configuration and Operation
91