Tektronix 2245A - VAR SEC;DIV Range; Magnifier Registration; A and B Timing Accuracy and Linearity

Performance Check Procedure
3. VAR SEC/DIV Range
a. Set:
SEC/DIV
SEC/DIV VAR
Horizontal POSITION
1 ms
Fully CCW
12 o’clock
b. Set time mark generator for 5 ms time marks.
c. CHECK—the time-mark spacing is equal to or less than two divisions.
d. Set SEC/DIV VAR fully CW (calibrated detent).
4. Magnifier Registration
a. Set X10 MAG on.
b. Position rising edge of a time marker to the center vertical graticule
line.
c. Set X10 MAG off.
d. CHECK—for less than 0.5 division horizontal trace shift.
5. A and B Timing Accuracy and Linearity
a. Set A SEC/DIV to 20 ns.
b. Set time-mark generator for 20 ns time marks.
7-38
2245A Operators