Tektronix Camcorder 2200 User Manual

2-76

 is a two-purpose knob whose operation is dependent 

on whether the

button or the

or 

 

button is pressed. If

is active, the 

 knob controls 

the top side of the box-style mask (see

 button description). If

 is active, the 

 knob controls the gain of the 

Mask bus clipper.

 is a two-purpose knob whose operation is 

dependent on whether the

 button or the

 or 

 button is pressed, just as with the 

knob. If

 

is active, the 

knob controls the bottom of the box-style 

mask (see

 button description). If

 or 

 

is active, this knob controls the Mask bus clipper.

The 

 and 

 knobs control the left and right sides of 

the box-style mask. They are inactive if

 is not selected.

The 

 button inverts the polarity of the signal used to 

create the mask. A mask that normally allows a key inside of a 
box, will allow a key outside the box when

is on. 

Mask Invert functions with all mask sources.