Check Vertical X5 Gain; Division Of; Check Vertical Deflection Accuracy; Check Variable Volts/Division Control Range - Tektronix 324 Instruction Manual

Performance Check/Calibration— Type 324
f. A D J U S T -X 1 V E R T G AIN adjustment, R 1 10 (see
Fig. 5-6B), for exactly five divisions of deflection.

17. Check Vertical X5 Gain

a. Set the standard amplitude calibrator for a 10-
millivolt square-wave output.
b. Pull the X5 V E R T G A IN switch.
c. Center the display about the center horizontal line
with the vertical POSITION control.
d. CHECK—CRT display for five divisions ± 0 .1 5 divi­
sion of deflection (within 3%).
NOTE
If X 5 gain is incorrect, R 135 can be re-selected. If
display is greater than 5.15 divisions, increase the
value of R135 (not more than 119 EL). If less than
4.85 divisions, reduce the value of R135 (not less
than 114 EL).

18. Check Vertical Deflection Accuracy

a. Push the X5 V E R T G AIN switch in.
b. CHECK—Using the V O L T S /D IV switch and stand­
ard amplitude calibrator settings given
check vertical deflection within 3% at each position of
the V O L T S /D IV switch.

19. Check Variable Volts/Division Control Range

a. Set the standard amplitude calibrator for a 50-
millivolt square-wave output.
b. Change the following control settings:
V O L T S /D IV
INPUT
c. Center the display about the center horizontal line
with the vertical POSITION control.
d. C H E C K -R o tate the V A R IA B L E V O L T S /D IV con­
trol fully counterclockwise. Display must be reduced to
5-16
in Table 5-2,
.01
AC
TABLE 5-2
Vertical Deflection Accuracy
Standard
VOLTS/DIV
amplitude
switch
calibrator
setting output
.01 50 millivolts
.02 0.1 volt
.05 0.2 volt
.1 0.5 volt
.2 1 volt
.5 2 volts
1 5 volts
2
10 volts
5 20 volts
10 50 volts
20
100 volts
two divisions or less (indicates adequate range for contin­
uously variable deflection factors between the calibrated
steps).

20. Check Input Coupling Switch Operation

a. Set the V A R IA B L E V O L T S /D IV control to CAL.
b. Set the standard amplitude calibrator for a 20-
millivolt square-wave output.
c. Center the display about the center horizontal line
with the vertical POSITION control.
d. Set the INPUT switch to GND.
e. CHECK—CRT display for straight line near the
center horizontal line.
f. Set the INPUT switch to DC.
g. CHECK—CRT display for square wave with the
bottom near the center horizontal line.
h. Disconnect all test equipment.
Maximum
error for
Vertical
±3%
deflection
accuracy
in
(divisions)
divisions
5 Checked and
adjusted in
step 16
± 0 .1 5
5
4 ± 0 .1 2
5 ± 0 .1 5
5 ± 0 .1 5
4 ± 0 .1 2
5 ± 0 .1 5
5 ± 0 .1 5
4
± 0 .1 2
± 0 .1 5
5
5 ±0 .1 5
®