Справочник Пользователя для Pelco Screen Splitter VSS200DT
C627M-A (8/03)
3
INSTALLATION
VIDEO INPUTS
Each of the two camera inputs is terminated in 75 ohms inside the splitter. So, if you loop a camera video line through a
monitor before routing to the splitter, be sure to set the monitor termination switch to HI-Z.
monitor before routing to the splitter, be sure to set the monitor termination switch to HI-Z.
The camera whose video is routed to the camera 1 input will be the master camera. That is, pictures from the camera 2 input
will be inserted into the pictures from the camera 1 input.
will be inserted into the pictures from the camera 1 input.
The master camera can be an economical, random interlace type because the splitter can provide horizontal and vertical
synchronization for the second camera. However, a master camera having 2:1 interlace will provide greater synchronization
stability. Refer to the
synchronization for the second camera. However, a master camera having 2:1 interlace will provide greater synchronization
stability. Refer to the
Sync Output (H Drive – V Drive BNC Connectors) section.
The second camera either must be independently synchronized to the master camera, or it must be a camera that can accept
horizontal and vertical synchronization from the splitter (refer to Figure 2). Refer to the
horizontal and vertical synchronization from the splitter (refer to Figure 2). Refer to the
Sync Output (H Drive – V Drive BNC
Connectors) section.
Figure 2 illustrates a typical configuration.
NOTE: (Applies to Figure 2 only.) Camera 2 must be equipped with three BNC connectors (one for VERT drive, one for HORIZ drive,
and one for VIDEO), and hooked to the VSS200DT. Camera 1 only needs to be equipped with one BNC connector for the VIDEO.
and one for VIDEO), and hooked to the VSS200DT. Camera 1 only needs to be equipped with one BNC connector for the VIDEO.
If you are using a camera with Gen. Lock, the configuration in Figure 3 applies.
NOTE: For installations using cameras with Gen. Lock only, the input termination resistor (R1) must be removed to let the
VSS200DT and the camera function properly.
VSS200DT and the camera function properly.
During normal operation CAM 1 is designated as the master camera.
If you want to change CAM 2 to be the master camera, slide the S2 switch on the motherboard in the opposite direction.
Figure 2. VSS200DT Typical Configuration