Huper huberDVR 2400, User Manual, Page: 210 / 249

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Appendix
Appendix 8
Guide to Connect PTZ Camera
I. Something you should know first
1. There are two types of RS-232 ports at a computer, serial ports and parallel ports. The serial
port, so called COM port, is the one for plugging in the control cable from the PTZ camera.
2. PTZ cameras have a RS-422/485 port to plug in the control cable. In order to connect a
control cable from a PTZ camera to a computer, a converter device from RS-422/485 to RS-
232 is usually adopted.
PS: The connection length of RS232 cable is limited in 15 meters. The connection length of
RS-422/485 cable can up to 1,200 meters.
3. A serial port at a computer can control multiple PTZ cameras. These PTZ cameras connected
to the same computer serial port are each identified by a unique hardware ID. You can assign
an ID to a PTZ camera by adjusting the ID switch of PTZ camera device. Detail please refers
to the PTZ camera manual.
4. RS-232 pin definition
Pin No Function
1 CD
2 RXD Receive Data
3 TXD Transport Data
4 DTR DTE Ready
5 GND Ground
6 DSR DCE Ready
7 RTS Request to Send
8 CTS Clear to Send
9 RI Ring Indicator
When we look in front of the female D
connector of COM port, the pin at right
top is pin 1. There are numbers beside
pins at the D female connector.
Computer communicates with PTZ
cameras by pin 2 and pin 3. The lines of
pin 2 (RXD) and pin 3 (TXD) each
connect to “Data-“ pin and “Data+” pin
of PTZ camera device. Please refer to
PTZ camera manual for the actual pin
name.
5. RJ11 cable
RJ11 cable is a general telephone cable. Telephone cable has three types, 2 lines inside, 4 lines
inside and 6 lines inside. Be sure to use 4 lines inside or 6 lines inside of telephone cable to