The setting on AHD DVR is very much similar to that of POE NVR. You can find from the POE camera kit for the DVR setting.
For AHD camera setting, if the AHD camera does not show on the DVR, you can:
1. switch the port
2. switch another cable
3. switch another camera to this port
4. contact seller from whom you bought the product when you find out which part might be the problem.