Smartec STC-1000 User Manual - page 12
1. Back Focus Ring
This ring is used to adjust the back focus length (distance between the
CCD and the back of the lens) by rotation of the ring in a clockwise or
counter-clockwise direction.
2. Back Focus Lock Screw
The lock screw locks the back focus ring after adjusting.
3. Auto Iris Lens Connector
The auto-iris lens connector supplies either a video signal or DC control
signal to an auto iris lens. A standard 4-pin din connector interfaces to
any auto iris lens.
4. Mounting Bracket Hole
The threaded holes (1/4” – 20) are used to mount the camera onto a
mounting bracket or tripod.
5. Function
Switch
The functions of the dip switch settings are explained below.
OFF
ON
ON
DC
OFF
VID
ON
OFF
E/I
A/I AGC
Position of switch
UP
DOWN
Status of switch
ON
OFF
Switch Alignment
*Except A/I function
A. E/I (Electronic Iris) (SW1)
The E/I automatically varies the camera’s shutter to mimic auto iris
control, allowing fixed or manual iris lenses to be used in a wider
range of applications.
B. A/I (Auto Iris) (SW2)
The A/I switch is used to select the appropriate auto iris control signal
to the lens.
DC: Select for use with a DC auto iris lens
VID: Select for use with a video auto iris lens
SWITCH POSITION
A/I SETTING
E/I SETTING
UP DC
OFF
DOWN VIDEO OFF
C. AGC (Auto Gain Control) (SW3)
The AGC feature keeps signals at a constant level. This control is
useful when using the camera at low light levels or when light levels
change over time.