Tektronix 475 User Manual

Calibration—475
g. CHECK—X10 MAG light is on when the X10 MAG
button is in.
h. CHECK—CRT display for 1 time marker/division,
within 2% from +20°C to +30°C; for 1 time marker/
division, within 4% from —15°C to +55°C.
65. Adjust Magnifier Registration
a. Select 5 ms time marks from the Time-Mark
Generator.
b. Position the second time marker to the center vertical
graticule line.
c. Release the X I0 MAG.
d. CHECK—Second time marker is within 0.4 division of
the center vertical graticule line.
e. ADJUST—Magnifier Registration adjustment, R1130
(see Fig. 5-24), to position the second time marker to the
center vertical graticule line.
f. CAL A ID —Repeat the above procedure until no shift
occurs between the positions of the X I0 MAG switch.
66. Check VAR TIM E/D IV Range
a. Set the A TIM E/D IV switch to 2 ms and the HORIZ
DISPLAY switch to A.
b. Select 5 ms time marks from the Time-Mark
Generator.
c. CHECK—At least 1 time marker/division can be
obtained by rotating the VAR TIM E /DIV control.
d. CHECK—That the UNCAL light comes on when the
VAR TIM E /D IV control is out of the detent position.
e. Return the VAR T IM E /D IV control to the detent
position.
67. Check Horizontal POSITION Control Range
a. Set the Horizontal FINE control to midrange and the
A TIM E/D IV switch to 2 ms.
b. Turn the horizontal POSITION control fully clock
wise.
c. CHECK—Start of sweep is to the right of the center
vertical graticule line.
d. Turn the horizontal POSITION control fully counter
clockwise.
e. CHECK—End of sweep is to the left of the center
vertical graticule line.
f. Rotate the horizontal FINE control.
g. CHECK—That the FINE control will position the
sweep between one and two divisions.
68. Adjust 10 Microsecond Timing
a. Set the DELAY TIME POSITION dial to 0.00, the B
SOURCE switch to STARTS AFTER DELAY, and both
TIM E/D IV switches to 10 jus.
b. Select 10 /is time marks from the Time-Mark
Generator.
c. CHECK—CRT display for 1 time marker/division,
within 1% from +20°C to +30°C; 1 time marker/division,
within 3% from - 1 5°C to +55°C.
d. ADJUST—C1064 (see Fig. 5-25) with a low-
capacitance screwdriver, for 1 time marker/division.
e. Set the HORIZ DISPLAY switch to A INTEN, and
the B T IM E /D IV switch to 0.1 jus.
f. CHECK—CRT display for 1 time marker/division,
within 1% from +20°G to +30°C; 1 time/marker/division,
within 3% from —15°C to +55°C.
g. ADJUST—C l023 (see Fig. 5-25) with a low-
capacitance screwdriver, for 1 time marker/division.
h. Set the HORIZ DISPLAY switch to B DLY'D and the
DELAY TIM E POSITION dial to 1.00.
i. Adjust the DELAY TIME POSITION dial to position
the time marker to the center vertical graticule line.
5-51

Tektronix 475 Specifications

General

Brand	Tektronix
Model	475
Category	Test Equipment
Language	English