33
8 Make Serial Port
Keyboard standard accessories package includes the following items.
z
One
DB9
z
Seven
DB9
z
One six-pin crystal port
z
One 25-pin (DB25)
z
One 485 transmission box. (Including one power source.)
8.1 RS232 Serial Port
232 serial port 232serial port
（
DB9
）
（
DB9
）
8.2 485 Port
RS485 port of DVR Keyboard 485 port
（
6-pin crystal spot
）
（
DB9
）
Keyboard and 485 switch box connection
8.3
25-pin Port and Switch Box Connection
Connect switch 25-pin box RS232 port with DVR RS232 port. (25-pin outlet supports
maximum twelve RS232 ports. Switch is just for sending not for receiving. So you can
use two cables: GND and TXD)
485switch box 25-pin port 232 port
（
DB25
）
（
DB9
）
Summary of Contents for KEYBPTZ3DPJ-LAN
Page 1: ...KEYBPTZ3DPJ LAN LAN PTZ Keyboard User s Guide ...
Page 11: ...11 Figure 2 3 ...
