Applies to: N43SU/N44SU
If you only connect some cameras(not all cameras) to your recorder and see the same image showing on two or more channels like below, please disable the unused channels to have a try.
Here is how to disable the unused channels:
1 Right click on the monitor screen, go to Main Menu, click on System.
2 On the system page, please go to Digital.
3 On the Digital Channel page, choose the unused channel number and uncheck the Enable box.