9
4.
System Connection and Power Up
The control keyboard can be connected to a PTZ camera or a digital video recorder
(DVR). The basic connections in a surveillance system are described below.
4.1
Connecting RS-485 Cables
To operate PTZ cameras, a control keyboard (or other control unit, e.g. DVR) is
needed to allow the PTZ camera to communicate with its control unit using the
RS-485 interface. CAT 5 (shielded twisted pair) cables are recommended for
RS-485 communication; the maximum cable length for wire with a gauge above 24
is 4000 feet (1219 meters). If the total cable length exceeds 4000 feet, using a
repeater to amplify the signals is recommended.
The terminal block is designed for long distance installations. The user can set up
an RS-485 network using the terminal block located on the rear panel of the control
keyboard. Detailed pin definitions can be found on rear panel.
4.2
Powering Up the Devices
Follow the steps below to power up all devices.
•
Connect all devices. Before connecting the PTZ cameras and DVRS to
the system control keyboard, please complete all protocol and unit ID
settings.
•
Power up all devices except for the keyboard. Make sure the images
from the cameras are displayed on the monitor screen.
•
Power up the control keyboard.
As soon as the control keyboard is powered up, the software version is displayed on
the LCD as shown below.
CCTV Controller
Version x.xx
The keyboard LCD will display the date and time when the keyboard is in standby
mode.
CCTV Keyboard
2005/12/15 12:00:00
