Tektronix 434 User Manual

h. ADJUST—C871 and C881 (see Fig. 5-12) for best
timing and linearity excluding the first and last two
divisions of the magnified sweep.
Calibration—434
i. Set the TIM E /D IV switch to 1 ps and the MAG switch
to .02 /Us. Set the V O LTS/D IV switch to 2 m V /D IV.
j. CHECK—CRT display for tw o cycles per division (one
cycle per division if using a 20 nanosecond sine wave) w ith
in 0.4 division (0.5 division if this measurement is being
made outside of the + 2 0 'C to +30°C temperature range).
Exclude the first and last ten divisions of magnified sweep.
k. ADJUST— C871 and C881 (see Fig. 5-12) as neces
sary for the best compromise of tim ing and linearity
between 1 ps with 50X magnification and .2 ps w ith 10X
magnification.
40. Check TIM E/D IV Accuracy
a. CHECK—A pply the appropriate time marks and
check each position of the T IM E /D IV switch for proper
timing (unmagnified) over the first ten divisions of sweep
w ithin 0.3 division (0.4 division if this measurement is
being made outside of the +20°C to +30SC temperature
range).
41. Check Magnified Sweep Accuracy
a. Set the T IM E /D IV switch to 1 ms.
b. CHECK—A pply the appropriate time marks and
check magnified timing at .5 ms, .2 ms, .1 ms, 50 ps, and 20
ps w ith in 0.4 division (0.5 division if this measurement is
being made outside of the +20°C to +30°C temperature
range).
c. Set the T IM E /D IV switch to .5 ms.
d. CHECK—A pply the appropriate time marks and
check magnified timing at .2 ms and 20 ps w ithin 0.4 divi
sion (0.5 division if this measurement is being made outside
of the +20°C to +30°C temperature range).
e. Set the TIM E/D IV switch to .2 ms.
f, CHECK—A pply the appropriate tim e marks and
check magnified timing at 50 ps and 5 ps w ith in 0.4 divi
sion (0.5 division if this measurement is being made outside
of the +20° C to +30°C temperature range).
42. Check High Speed Magnified Timing Accuracy
a. CHECK—Timing accuracy of T IM E/D IV and MAG
switch combinations given in Table 5-6 w ithin 0.4 division
(0.5 division if this measurement is being made outside of
the +20° C to +30° C temperature range).
TABLE 5-6
High Speed Magnified Timing Accuracy
TIM E /D IV
MAG
Portions Excluded
1 MS
.5 ps
First and last .5 division.
.2 ps
First and last 1 division.
.1 ps
First and last 2 divisions.
.05 ps First and last 5 divisions.
.02 ps First and last 10 divisions.
.5 ps
.2 ps First and last .5 division.
.1 ps
First and last 1 division.
.05 ps First and last 2 divisions.
.02 ps First and last 5 divisions.
.2 ps
.1 ps
First and last .5 division.
.05 ps First and last 1 division.
.02 ps
First and last 2 divisions.
b. Disconnect all test equipment.
43. Check External Horizontal Sensitivity
a. Set the T IM E/D IV switch to EXT HO RI2 and the
TR IGGER LEVEL control fully clockwise.
b. Connect the output of the Standard Am plitude Cali
brator to the EXT HOR IZ input connector via a 42-inch 50
Q. BNC cable.
c. Set the Standard A m plitude Calibrator for a tw o-volt
output signal amplitude.
d. CHECK—CRT display for two dots horizontally
separated by approximately fo ur divisions (typically w ith in
3.5 to 4.5 divisions).
5-26
e. Disconnect all test equipment.

Tektronix 434 Specifications

General

Brand	Tektronix
Model	434
Category	Test Equipment
Language	English