Steren CCTV-250 Manual De Instrucciones página 24

7 AND 8 SWITCHES
Using the 7 and 8 switches you can set the camera baud rate. This rate
should be equal to the control or device that is connected to the camera.
It has 4 speed options: 1200, 2400, 4800, and 9600. The settings are as
follows:
SWITCH 9
Using the 9switch you may select the camera's protocol. For Pelco-P
protocol the switch must be ON for Pelco-D must be OFF.
SWITCH 0
The DIP 0 is to change the 485 terminal resistance to 120Ω. This is useful
when cable runs are very long, since it reduces the attenuation effect.
9