Toshiba teli BU040M Instruction Manual page 30

Notes of random trigger shutter mode:
- In the period when FRAME_TRIGGER_WAIT (GPIO signal) is inactive, user must not input external trigger signal to
this camera.
-
When the interval of the input trigger signal is extremely short, or when the trigger signal is noisy, there is a possibility
of causing the malfunction. In this case, please input a proper trigger signal.
Copyright © 2018 - 2020 Toshiba Teli Corporation, All rights reserved.
29 / 177 DAA00195C
https://www.toshiba-teli.co.jp/en/