Vitek VT-PTZ220HD, Manual

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HD-SDI CAMERA
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8.4 PRINCIPLE OF TERMINATION
Every device that is connected at the end of the communication data line must be
terminated by either the DIP switch setting or an appropriate device such as a
termination jumper to prevent potential control signal errors.
See Figure 6 for termination switch settings and Figure 7 for examples of devices
requiring termination. Note: Total length of the cable for communication should
not exceed 1.2Km or .74 mile.
S8
Figure 5 - Setting Dome Camera Termination
** Unless communication error, Set switch 3, 4 of S2 in OFF state.
Position 3, 4 should be set as a pair. (Both 3, 4 to ON position or OFF position)
S8: 1 2 3 4
Terminated ON X X X
Not terminated OFF X X X
Pull Up/Down ** X X ON ON
Normal ** X X OFF OFF