Specification and User Manual - 20210906

7 Features

5.1 Slave Trigger Mode

At slave trigger mode, the DCAM710 product outputs image only when trigger signal

happens. A customized 5pin USB cable shall be in use to implement the slave trigger

mode for DCAM710.

Hardware Trigger Function

Hardware trigger mode is available only when the camera works at slave mode, in

slave mode the camera will wait for the hardware trigger signal on Ext_Trigger.

The EXT_Trigger signal is for slave synchronization for each frame, External input

trigger signal voltage should range 3.3V-20V, driving current ability should be more

than 5mA;

You can use input pin Ext_Trigger to send a hardware trigger signal to the camera. The

hardware trigger can be used to trigger the acquisition start. A hardware debouncer

circuit shall be considered on the EXT_Trigger line.

By default, the hardware trigger is rising edge activated, refer to below exposure

timing:

Exposure Exposure

EXT_Trigger

Camera Exposure

The requirement to T1 should be from 100us to 2ms.

Two ways can set the DCAM710 product at slave trigger mode before start streaming:

1) Call API Ps2_SetSlaveModeEnabled(PsDeviceHandle device, uint32_t

sessionIndex, bool bEnabled), before Ps2_StartStream();

This way requires calling the API every power cycle.

2) Use Vzense Cofig Tool to set the the default mode as slave mode;

This way can hardcode the product as slave mode by default.