Relation between IPS, Record Quality, and Resolution

[vmgtlexi 0]

Can someone give me the quick & dirty "cheat sheet" for the relationship between my DVR settings for:

 

* Frames per second (my DVR uses "IPS" - same or different than FPS?)

* Record Quality, and

* Resolution

 

Although I've been fiddling with it some, I think my current settings for all 4 cameras are:

 

FPS "Normal": 15 FPS

FPS "Event": 30 FPS

 

Record quality: "superior" (this is the top choice for the quality setting)

 

Resolution: 720x480 (D1)

 

Questions:

 

* Do I sacrifice clarity with the higher FPS?

 

* Oddly, while I was fiddling with the FPS settings, it wouldn't let me go back to 15 and 30 FPS as noted above. It showed a max of 7.5 FPS for normal and 15 FPS for events. Is this due to some calculation of my 4 cameras mixed with the resolution/quality settings? What gives??

 

My manual (written in BAD English) says my "Normal" max recording rate = max DVR rate (30 FPS under D1) divided by # of cameras (4) = 7.5 FPS. However, it had previously been set at 15 FPS.

 

Then, the manual says my "Event" records speed is up to 3 FPS. But, as I said above it locked me at a max of 15 FPS until I rejiggered something.

 

Also, my manual and DVR use "IPS". Is that the same as FPS?

 

I am very confused!!