Bolin Technology VCC-7 Series, User Manual

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4.
RS485 Daisy Chain multiple camera connection via HDBaseT receivers:
Operating Multiple Cameras Using RS-422/485
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Using RS-422 (VISCA), you can connect up to 7 cameras.
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Using RS-485 (PELCO), you can connect up to 255 cameras.
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Using RS-485 (PELCO), all camera addresses must be set up before the connection. You can set the
camera address by operating OSD menu, or by setting the Dip Switch on the bottom of the camera.
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In this case, you can use multiple control keyboards.
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The joystick of the remote keyboard controller allows comfortable pan/tilt and zoom operations.