Tektronix 453 User Manual

Performance Check/Calibration-Type 453/R453
CONTROL SETTINGS
Set the controls as given under Preliminary Control
Settings
except as follows:
INTENSITY
FOCUS
A and B TIME/DIV
A SWEEP MODE
Midrange
Adjust for a focused
display
20 µs
AUTO TRIG
25. Check Upper Vertical Bandwidth Limit of
Channel 1 and 2
a. Test equipment required for steps 25 through 40 is
shown in Fig. 5-18.
b. Connect the constant-amplitude sine-wave generator
(Type 191) to the Channel l INPUT connector through the
five-nanosecond
GR cable, 5 X GR attenuator and the 50-
ohm in-line termination.
c. Set the constant amplitude generator for a four-divi-
sion display
at its reference frequency (50 kHz).
d. Without changing the output amplitude, increase the
output frequency of the generator
until the deflection is
reduced to 2.8 divisions (-3 dB point; see Fig. 5-19).
e. CHECK-Output frequency of generator must be 50
megahertz or higher.
f. Set the CH l VOLTS/DIV switch to 10 mV.
g. Set the constant-amplitude generator for Q four division
display
at its reference frequency (50 kHz).
h. Without changing the output amplitude, increase the
output frequency of the generator
until the deflection is
reduced to 2.8 divisions (-3 dB point; see Fig. 5-19).
i. CHECK-OutP.ut frequency of generator must be 45
megahertz or higher.
I· Set the CH l VOLTS/DIV switch to 5 mV.
k. Set the constant-amplitude generator for a four divi-
sion display
at its reference frequency (50 kHz).
I. Without changing the output amplitude, increase the
output frequency of the generator
until the deflection is
reduced to 2.8 divisions (-3 dB point; see Fig. 5-19).
m. CHECK-Output frequency of generator must be 40
megahertz or higher.
n. Set the MODE switch to CH 2.
o. Disconnect the output of the in-line termination from
the Channel 1 INPUT connector and connect it to the Chan-
nel 2 INPUT connector.
p. Set the constant-amplitude generator for a four-divi-
sion display
at its reference frequency (50 kHz).
q. Without changing the output amplitude, increase the
output frequency of the generator
until the deflection is
reduced to 2.8 divisions (-3 dB point; see Fig. 5-19).
5-22
r. CHECK- Output frequency of generator must be 50
megahertz or higher. ..-
s. Set the CH 2 VOLTS/DIV switch to 10 mV.
t. Set the constant-amplitude generator for a four-division
display
at its reference frequency (50 kHz).
u. Without changing the output amplitude, increase the
output frequency of the generator
until the deflection is re-
duced to 2.8 divisions (-3 dB point; see Fig. 5-19).
v. CHECK-Output frequency of generator must be 45
megahertz or higher.
w. Set the CH 2 VOLTS/DIV switch to 5 mV.
x. Set the constant-amplitude generator for a four-divi-
sion display
at its reference frequency (50 kHz).
y. Wit.hout changing the output amplitude, increase the
output frequency of the generator
until the deflection is re-
duced to 2.8 divisions (-3 dB point; see Fig. 5-19).
z. CHECK-Output frequency of generator must· be 40
megahertz or higher.
26. Check Added Mode Upper Bandwidth Limit
a. Change the following control settings:
VOL TS/DIV (CH 1 and 2) 20 mV
CH l POSITION
CH 1 Input Coupling
MODE
Midrange
GND
ADD
b. Set the constant-amplitude generator for a four-division
display
at its reference frequency (50 kHz).
c. Without changing the output amplitude, increase the
output frequency of the generator
until the deflection is
reduced to 2.8 divisions (-3 dB point; see Fig. 5-19).
d. CHECK-Output frequency of generator must be 50
megahertz or higher.
Four-division display at
Fig. 5-19. Typical CRT display when checking vertical bandwidth
(simulated waveform I .
REV. D, OCT. 1975

Tektronix 453 Specifications

General

Brand	Tektronix
Model	453
Category	Test Equipment
Language	English