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[ 12 ] Pelco Manual C1986M-B (11/03)
SWITCH SETTINGS
Figure 7. Switch Settings (Defaults)
Gamma (NOR/LIN Switch) - Switch Setting 8
Sets the Gamma level to one of the following:
NOR (Default setting) - Increases visibility in dark areas of the picture.
LIN - Linear response increases (overall) contrast.
Automatic Gain Control (AGC/Off Switch) - Switch Setting 7
Automatically adjusts the image to compensate for changes in light levels when us-
ing fixed or manual iris lenses. Following are the AGC switch settings:
ON (Default setting) - Enables the AGC mode.
OFF - Disables the AGC mode.
Lens Mode Selector (AIV/AID Switch) - Switch Setting 6
The AIV/AID switch setting is determined by the type of lens used:
AIV - Video drive auto iris lens.
AID (Default setting) - Direct drive lens.
Synchronization (LL/INT Switch) - Switch Setting 5
Locks the frame rate to the power supply frequency. Eliminates vertical roll caused
by multiple cameras connected to the same switching device. Each camera output is
synchronized to the frequency of the power supply. Set the camera synchronization
mode to one of the following:
Line Lock (LL) (Default setting) - Line-locks frame rate of cameras.
Internal (INT) - Disables line lock (use with DC power or noisy AC power).
8
8
NOR
LIN
7
7
AGC ON
AGC OFF
6
6
AIV
AID
5
5
INT
LL
NOTE: Under most conditions, no setting of switches will be required. Please read the details of each switch
before making any adjustments.
NOTE: White represents
switch position.
NOR
OFF
AIV
INT
ESC
ESC
BLC
OFF
LIN
AGC
AID
LL
SHT
OFF
OFF
FLK
PHASE LEVEL
+-
8
7
6
5
4
3
2
1
+-