Q-See QSD2216 User Manual page 37

You can press up, down, left, or right buttons to move the speed dome, and press the Enter
button to stop. If you press the Iris button, the character "Iris" will appear on the screen, please
refer to the picture below, then you can press the "ADD" and "DEC" button to change the Iris, the
same to control the focus, zoom, and speed, also press enter button to stop.
Note: When DVR is in PTZ mode, "REC" button is used as "ZOOM"; "PLAY" button is used
as "IRIS"; "REW" button is used as "FOCUS"; "FWD" button is used as "SPEED". "ADD" and
"DEC" buttons are used to adjust the value.
Press the PTZ button one more time to exit from PTZ control.
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