Tektronix 453 User Manual

Intensity
modulation
-
-
- -
-
~- -
-
.
.
(A)
Intensity
modulation
~--
--·
·--
--~
:-~---
--
·--
.
.
(BJ
Fig. 5-50. (Al Typical CRT display when checking Z-axis operation
at 50 kilohertz, (Bl typical CRT display when checking Z-axis opera-
tion at 50 megahertz.
d. Set the A SOURCE to EXT.
e. Remove the ground strap from between the binding
posts.
:f. Set the constant-amplitude generator for five volts
output
at 50 kilohertz (use calibrated position of generator
amplitude control).
g. CHECK-CRT display for noticeable intensity modula-
tion (see
Fig. 5-50A). The INTENSITY control setting may
need to be reduced to view trace modulation.
h. Set the constant-amplitude generator for five volts
output
at 50 megahertz (use calibrated position of generator
amplitude control).
1. Set the A and B TIME/DIV switch to .1 µs.
j. CHECK-CRT display for noticeable intensity modu-
lation (see
Fig. 5-508). The INTENSITY control setting may
need to be reduced to view trace modulation.
k. Disconnect all test equipment and replace ground strap.
©
Performance Check/ Calibration-Type 453/R453
Zero
-
...- volt_..
- ·--
I
level
I
I
I I
I
I
I
I
I
I
I
I
I
I I
s,..__ Duration--about _..
I 5.5 divisions I
t--
Amplitude-2.4
divisions,
-+-0.24 -
division
I It I
------
Fig. 5-51. Typical CRT display when checking gate amplitude and
duration (vertical deflection, five volts/division; sweep rate, two milli-
seconds/ division l.
73. Check A Gate Output Signal
a. Set the A and B TIME/DIV switch to 1 ms.
b. Connect the A GATE connector (on side panel) to the
test-oscilloscope input connector with the 42-inch
BNC cable.
c. Set the test oscilloscope for a vertical deflection fac-
tor of five-volts/division
at a sweep rate of two milliseconds/
division.
d. CHECK-Test oscilloscope display for 2.4 divisions,
-+-0.24 division, vertical deflection with the bottom of the
waveform near the zero-volt level
(12 volts, -+-10%; see Fig.
5-51). Gate duration should be about 5.5 divisions (about
11 times the A TIME/DIV switch setting).
7 4. Check B Gate Output Signal
a. Connect the B GATE connector (side panel) to the
test-oscilloscope input connector with the 42-inch
BNC cable.
b. Change the following control settings:
A
TIME/DIV
B TIME/DIV
HORIZ DISPLAY
2 ms
1 ms
DELAYED SWEEP (B)
c. CHECK-Test oscilloscope display for 2.4 divisions,
-+-0.24 division, vertical deflection with the bottom of the
waveform near the zero-volt
level (12 volts, ± 10%; see Fig.
5-51). Gate duration should be about 5.5 divisions (about
11 times the B TIME/DIV switch setting).
This completes the calibration procedure for the Type 453.
Disconnect all test equipment and replace the top and bot-
tom covers. If the instrument has been completely checked
and calibrated to the tolerances given
in this procedure,
it will meet the electrical characteristics listed in the Per-
formance Requirement column of the Specifications section
of
this manual.
5-43

Tektronix 453 Specifications

General

Brand	Tektronix
Model	453
Category	Test Equipment
Language	English