Tektronix 2246A Operator's Manual page 162

DISPLAY
Time-mark generator 50 0 BNC coaxial cable
1, TRACE ROTATION
a. Set:
READOUT (intensity) For a viewable readout
AINTEN For a viewable trace
VERTICAL MODE CH 1
CH 1 VOLTS/DIV O1V
CH 1 COUPLING AC
A/B SELECT A Trigger
TRIGGER MODE AUTO LEVEL
TRIGGER SOURCE VERT
TRIGGER CPLG bc
TRIGGER SLOPE ./— {positive-going)
TRIGGER HOLDOFF Min
TRIGGER LEVEL 12 o'clock
Horizontal POSITION 12 o' clock
A SEC/DIV 2s
Measurements All off (press CLEAR
DISPLAY three times}
FOCUS For best defined display
SCOPE BW Off
b. Position trace vertically to the center graticule line.
c. CHECK—trace rotation control range is adequate to align trace with
center graticule line using a small straight-bladed alignment tool.
d. ADJUST—trace parallel to center horizontal graticule line.
7-8 2246A Operators