Just to clarify some more, I played back the recorded video again and saw that when I hit RESET in the menu it then switched it to PAL - by itself, not me clicking the format menu item. This is an AF dome purchased from Techpro at christmas time, and it was always NTSC. It was originally set to regular HD mode, but the DVR went bad and it has had the wires shorted for SD mode for the past couple months. The image is HD now though as it is back on the replacement/updated DVR, and as mentioned I was able to control the zoom and menu for a while until this happened.
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