Gemini 435Le hardware triggering problems

Hello,

we are trying to integrate the Gemini 435Le in our products, but we are facing issues with the hardware triggering, both from code and from the Orbbec Viewer GUI.

Camera Information:

Camera Model: Gemini 453Le, G30056-370
Serial Number: CP4B85P000E
Purchase Date: 13 October 2025

Issue Description:

Detailed Description of the Issue (Highly Preferred): when the camera is in hardware trigger mode, it streams continuously. We expect instead the camera waiting for the external signal on the VSYNC cable. 

Operating Environment:

Operating System and Version: WIndows 11, Ubuntu 20.04
Software Used with Camera and Version: Orbbec Viewer 2.5.5, Firmware 1.3.06

Steps to Reproduce the Issue:

Exact Steps Taken When Using the Camera: just connect the camere by Ehternet port, open the Orbbec Viewer > Camera > Device Control > Synchronization Configuration > Mode: Hardware Triggering > Write
Connection Schema: POWER IN to 24V, VSYNC IN to GND, SIGNAL GND to GND, POWER GND to GND, the rest not connected
Is the Issue Reproducible: yes

Troubleshooting Steps Attempted:

Restarting the Camera/Computer:  Yes
Checking and Reconnecting All Cables: Yes
Trying the Camera on a Different Computer: Yes, both on Ubuntu and WIndows
Updating or Reinstalling Drivers/Software: Yes
Any Other Troubleshooting Steps Taken: (if appliable) tried also with the SDK 2.5.5 in C++, same behaviour.