Tally Light Gpi I/O Connection - Bolin Technology VCC-7HD30S-3SMC User Manual

Tally Light GPI I/O connection

The camera is equipped with a Tally lamp that quickly distinguishes when the camera is in use. In order to use
camera Tally Light function, you need a video switch 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. After done above operations, 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, and keyboard will transmit this tally signal to camera 1 via standard RS-422 control cable,
so camera 1 tally light will turn on, and keyboard can control camera 1 pan and zoom;
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