Digital Video Recorder User Manual 
 
174 
Chapter 10 VCA Alarm 
Purpose 
The DVR can receive the VCA alarm (line crossing detection, intrusion detection, sudden scene 
change detection and audio exception detection) sent by analog camera, and the VCA detection 
must be enabled and configured on the camera settings interface first. All other VCA detection 
features must be supported by the connected IP camera.   
   
 
The DS-7100 series DVR do not support the VCA alarm.   
 
DS-7200/7300/8100/9000HUHI-F/N series DVR support VCA (line crossing detection and 
intrusion detection) of all channels. DS-7600HUHI-F/N series DVR support 2-ch VCA (line 
crossing detection and intrusion detection). Channels with audio support audio exception 
detection. 
 
HQHI series DVR excluding 7100 series support 2-ch VCA (line crossing detection and 
intrusion detection). Channels with audio support audio exception detection. 
 
Other models support 1-ch VCA (line crossing detection and intrusion detection). Channels 
with audio support audio exception detection. 
 
For the analog channels, the line crossing detection and intrusion detection conflict with 
other VCA detection such as sudden scene change detection, face detection and vehicle 
detection and heat map or people counting functions. You can only enable one function. 
10.1  Face Detection 
Purpose 
Face detection function detects the face appears in the surveillance scene, and some certain 
actions can be taken when the alarm is triggered. 
Step 1 Enter the VCA settings interface. 
Menu > Camera > VCA 
Step 2 Select the camera to configure the VCA. 
You can click the checkbox of Save VCA Picture to save the captured pictures of VCA 
detection.