I'm trying to connect an external sensor (in this case a trip beam) to my Hikvision camera which will in turn trigger an action on my newly acquired 16 channel Hikvision NVR. It looks like this setup should be possible but my NVR isn't responding to the sensor. With that said, I configured the camera to send me an email when the alarm input is triggered and it works perfectly. The sensor is an Optex AX-70TN trip beam sensor.
So how do I setup the NVR to listen to the alarm input from the camera? Here are a couple pics of my setup and screenshots of the NVR alarm configuration:
The trip beams (without the cover) connected to the alarm input of the Hikvision mini-dome DS-2CD2532-I(S):

Alarm input setup screen in the NVR. The two Hikvision cameras are shown at the bottom:

I select the camera with IP 192.168.1.201 and select 'N.C.' for the type (which is correct for this sensor) and check the 'Enabled' box:

Clicking on the 'Settings' icon brings up the following screen (I select 'D4' which is the label for this camera):

I make sure 'Arming Schedule' is set for the full day (for each day of the week):

And last I define the actions I want for the alarm input from the camera (in this case just sound an alert and go full screen on the camera):

Obviously I must be doing something wrong but I can't figure out what it is!
So how do I setup the NVR to listen to the alarm input from the camera? Here are a couple pics of my setup and screenshots of the NVR alarm configuration:
The trip beams (without the cover) connected to the alarm input of the Hikvision mini-dome DS-2CD2532-I(S):

Alarm input setup screen in the NVR. The two Hikvision cameras are shown at the bottom:

I select the camera with IP 192.168.1.201 and select 'N.C.' for the type (which is correct for this sensor) and check the 'Enabled' box:

Clicking on the 'Settings' icon brings up the following screen (I select 'D4' which is the label for this camera):

I make sure 'Arming Schedule' is set for the full day (for each day of the week):

And last I define the actions I want for the alarm input from the camera (in this case just sound an alert and go full screen on the camera):

Obviously I must be doing something wrong but I can't figure out what it is!