Bolin Technology D Series, User Manual

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Tally Light GPI I/O connection
The camera is equipped with a Tally lamp that quickly distinguishes when the camera is in use. It is an arc
Tally lamp used for improving visibility and merge together with the circular design lens.
To use camera Tally Light function, you need a video switcher and a keyboard (not included).
GPI connection with RS422 VISCA control connection
Cable Preparation
1. Build standard multiple cameras RS-422 daisy chain control connection between the keyboard
controller and the cameras. (For more RS422 control information details please refer to Keyboard
Controller user guide)
2. Built Tally/Contact Function cable connection between the Keyboard Controller and Video Switcher
(Sony)
Set UP
1. GPI I/O Input mode - Tally signal is sent by Video Switch
a. Connect camera with keyboard by standard RS-422 control cable.
b. Connect keyboard with video switch by tally function cable.
c. Access to KEYBOARD SETTING > GPI I/O > Setting, and change it to Input mode, then Exit to
home directory.
d. Once the above is done, we can switch to different camera by video switch. For example, if we
switch to camera 1 on video switch, it will send tally signal to keyboard via the tally function cable.
The keyboard will then transmit this tally signal to camera 1 via standard RS-422 control cable, so
camera 1
’s tally light will turn on, and the keyboard can control camera 1’s pan and zoom.
e. If switch to camera 2 on video switch, then camera 2 tally light will on and camera 1 tally light will
off.