Tektronix 453 User Manual

32. Check A and B Internal Triggering
Operation
a. Set the constant-amplitude generator for a 0.2-division
display
at 10 megahertz (use AUTO TRIG position, if nec-
essary, to obtain display).
b. Set the A and B TIME/DIV switch to .1 µs.
c. CHECK-Stable CRT display (see Fig. 5-22A) can be
obtained
with the A COUPLING switch set to AC, LF REJ
and DC (A LEVEL control may be adjusted as necessary to
obtain stable display).
The A SWEEP TRIG'D light must be
on when the display
is stable.
d. Set the constant-amplitude generator for a one-division
display
at 50 megahertz.
e. Set the MAG switch to X 10.
f. CHECK-Stable CRT display (see Fig. 5-22B) can be
obtained
with the A COUPLING switch set to AC, LF REJ
and DC (A LEVEL and HF STAB controls may be adjusted as
necessary to obtain stable display). Display jitter should not
exceed
0.1 division (one nanosecond).
g. Change the following control settings:
A
LEVEL
HORIZ DISPLAY
Set for stable A display
DELAYED SWEEP (B)
h. Set the constant-amplitude generator for one-division
display
at 50 megahertz (as set in part d above).
i. CHECK-Stable CRT display (see Fig. 5-22B) can be
obtained
with the B COUPLING switch set to AC, LF REJ
and DC (B LEVEL control may be adjusted as necessary to
obtain stable display).
j. Set the constant-amplitude generator for a 0.2-division
display
at 10 megahertz.
k. Set the MAG switch to OFF.
I. CHECK-Stable CRT display (see Fig. 5-22A) can be
obtained
with the B COUPLING switch set to AC, LF REJ
and DC (B LEVEL control may be adjusted as necessary to
obtain a stable display).
33. Check A and B External Triggering
Operation
a. Change the following control settings:
SOURCE (A and B)
HORIZ DISPLAY
MAG
EXT
A
OFF
b. Set the constant-amplitude generator for a one-division
display
(50 millivolts) at 10 megahertz.
c. CHECK-Stable CRT display (see Fig. 5-23A) can be
obtained
with the A COUPLING switch set to AC, LF REJ
and DC (A LEVEL control may be adjusted as necessary to
obtain stable display).
©
Performance Check/Calibration-Type 453/R453
Fig. 5-21. Location of Channel 1 Trigger and Normal Trigger DC
level !Vertical Preamp circuit board).
·~
·~
!Al
v
v'
ir'
v~
~.)
v "
~.)
/'
~ ,J
I
r\.. ~
~.)
.
lBl
Fig. 5-22. (Al Typical CRT display when checking internal 10 mega-
hertz triggering, !Bl typical CRT display when checking internal
50 megahertz triggering.
d. Set the MAG switch to X 10.
e. Set the constant-amplitude generator for a 2.8-division
display
at 50 megahertz (2.8-division display takes into
account typical rolloff
in vertical response at 50 MHz).
f. CHECK-Stable CRT display (see Fig. 5-23B) can be
obtained
with the A COUPLING switch set to AC, LF REJ
and DC (A LEVEL and HF STAB controls may be adjusted as
necessary to obtain stable display).
5-25

Tektronix 453 Specifications

General

Brand	Tektronix
Model	453
Category	Test Equipment
Language	English