Revo REJCPTZ-2 - Manual (Page 5)

3. Element Connection and Termination Resistors:
The RS485 standard requires a daisy-chain connection between the
connected elements.
For reliable operation, there must be 120 Ohm termination resistors present at
both ends of the RS485 bus. (Refer to the following illustration.)
The last PTZ camera on the bus (the camera furthest from the controlling
device) should have its termination resistor enabled. On most cameras, the
termination resistor is enabled or disabled using a configuration switch on the
PTZ camera.
Only two termination resistors are allowed to be present on any RS485 bus.
The PTZ keyboard does not have a termination resistor.
4. Problems with RS485 Wiring:
RS485 elements should be daisy-chained together. The RS485 bus should connect the
keyboard to camera 1, camera 1 to camera 2, camera 2 to camera 3, etc.
Quick Reference for PTZ Camera Control Commands
All directions (up/down, right/left), twist, and pushbutton functions are present
on the joystick
Pressing the【CTRL】key acts as a turbo mode, momentarily speeding up the
camera’s pan and tilt functions
P/T right or left, up or down:【Joystick】move to right or left, up or down
Lens zoom:【Joystick】counterclockwise or clockwise rotation
Lens Focus:【SHIFT】+【Joystick】move to left or right
Lens Iris:【SHIFT】+【Joystick】move to up or down
Set preset:【#】+【SHIFT】+【PRESET】
Call preset:【#】+【PRESET】
Clear preset:【#】+【SHIFT】+【CANCEL】, CANCEL/OK is displayed
Run Auto Scan:【#】+【AUTO】
Run Tour: 【#】+【TOUR】
Run Pattern:【#】+【SHIFT】+【MENU】
On Command:【#】+【ON】
Off command:【#】+【SHIFT】+【AUTO】
NO. + PGM+ Tour:【#】+【SHIFT】+【TOUR】
NO. + PGM+ Scan:【#】+【ESC】
Press【PRESET】to enter Preset menu
Press【TOUR】to enter Tour menu
Press【MENU】to enter Dome menu
Press【SHIFT】+【MENU】to enter Pattern menu
Press【AUTO】to enter Auto scan menu
Press【SHIFT】+【ESC】to enter Alarm menu
Home key:【SHIFT】+【TOUR】
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