Tektronix 475 User Manual

Calibration—475
e. CHECK—Intensified portion of the sweep begins at
the tenth time marker.
f. A D JU S T —Delay Stop adjustment, R936 (see
Fig. 5-23), so the left side of the intensified zone starts on
the leading edge of the tenth time marker.
g. Set the HORIZ DISPLAY switch to B DLY'D.
h. Set the DELAY TIM E POSITION dial to 1.00.
i. CHECK—Displayed pulse starts at the beginning of the
sweep.
j. ADJUST—Delay Start adjustment, R938, so the
displayed pulse starts at the beginning of the sweep.
k. Set the DELAY TIME POSITION dial to 9.00.
l. CHECK—Displayed pulse starts at the beginning of the
sweep.
m. ADJUST—Delay Stop adjustment, R936, so the
displayed pulse starts at the beginning of the sweep.
n. INTERACTION—Between Delay Start and Delay
Stop adjustments. Repeat both for no visible interaction.
63. Check Differential Time Accuracy
a. Set the DELAY TIM E POSITION dial to position the
tenth time marker to the beginning of the sweep.
b. Note the reading on the DELAY TIM E POSITION
dial.
c. Adjust the DELAY TIME POSITION dial so the ninth
time marker is at the beginning of the sweep.
d. CHECK -DELAY TIME POSITION dial fora reading
one division less, within 0.01 division from +15°Cto +35° C
(one division less, within 0.02 division from —15°C to
+55°C) than the reading noted in step 63-b.
e. Rotate the DELAY TIME POSITION dial to position
each successive time marker to the beginning of the sweep.
f. C HECK -DELAY TIM E POSITION dial for a reading
of one division less, within 0.01 division from +15°C to
+35°C (one division less, within 0.02 division from —15°C
to +55°C), than the adjacent time marker.
64. Adjust Horizontal Amplifier Gain
a. Set the HORIZ DISPLAY switch to A, both TIM E /
DIV switches to 1 ms, and the VERT MODE switch to
CH 1.
b. Select 1 ms time marks from the Time-Mark Genera
tor.
NOTE
Unless otherwise stated, timing checks are made over
the entire 10 divisions.
c. CHECK—CRT display for 1 time marker/division,
within 1% from +20°C to -K30°C; for 1 time marker/
division, within 3% from —15°Cto +55°C.
d. ADJUST—Horizontal Gain adjustment, R1155 (see
Fig. 5-24), for 1 time marker/division.
NOTE
Effective range o f R 1155 is determined by the
selected value of R1154. R 1154 may be 100 El,
124 £2, or ISO £2, 1/8 watt, 1% resistor.
e. Select 0.1 ms time marks from the Time-Mark
Generator.
f. Push the X I0 MAG button.
Fig. 5-24. Location of Horizontal Gain and Magnifier Registration
adjustments.
5-50

Tektronix 475 Specifications

General

Brand	Tektronix
Model	475
Category	Test Equipment
Language	English