Tektronix 475 Technical Manual

ai. CHECK—That a stable triggered display cannot be
obtained with adjustment of A TRIGGER LEVEL.
aj. Set CH 1 VOLTS/DIV to 5 mV, set TIME/DlV to 2
and set A TRIGGER SOURCE to NORM.
ak. Set the sine-wave generator for a 5 division,
1 megahertz display, then set CH 1 VOLTS/DIV to 50 mV.
al. CHECK—Repeat part ai.
am. Return A TRIGGER COUPLING to AC.
an. Disconnect all test equipment.
12. Check B Low-Frequency Triggering
a. Set TIME/DlV to 50 set CH 1 VOLTS/DIV to 5 mV
and set HORIZ DISPLAY to B DLY’D. (B DLY’D sweep will
not appear when not triggered).
b. Connect the low-frequency generator output to a
42-inch 50-ohm BNC cable, to a BNC female-to-BNC
female adapter, to a BNC T-connector, to two 18-inch 50-
ohm BNC cables, to CH 1 input and B TRIGGER external
input.
c. Set the low-frequency generator for 50 kilohertz,
then set the generator for a 5 division display and set CH 1
VOLTS/DIV to 50 mV.
d. CHECK—That a stable triggered display can be
obtained in AC, LF REJ, HF REJ and DC positions of B
TRIGGER COUPLING with adjustment of B TRIGGER
LEVEL.
e. Set CH 1 VOLTS/DIV to 5 mV.
f. Set the low-frequency generator for a 3 division,
50 kilohertz display, then set CH 1 VOLTS/DIV to 50 mV.
g. CHECK—That a stable triggered display can be
obtained in AC and DC positions of B TRIGGER
COUPLING with adjustment of B TRIGGER LEVEL.
h. Set the low-frequency generator for a 2 division,
50 kilohertz display, then set B TRIGGER SOURCE to
EXT (100 millivolts at external input).
i.
j.
k.
TM 11-6625-2735-14-1
CHECK—Repeat part d of this step.
Set CH 1 VOLTS/DIV to 10 mV.
Set the low-frequency generator for a 5 division,
50 kilohertz display (50 millivolts at external input), then
set CH 1 VOLTS/DIV to 50 mV.
l. CHECK—Repeat part g.
m. Set B TRIGGER SOURCE to NORM, set CH 1
VOLTS/DIV to 5 mV and set TIME/DIV to 10 ms.
n. Set the low-frequency generator for a 5 division,
60 Hertz display, then set CH 1 VOLTS/DIV to 50 mV.
o. CHECK—That a stable triggered display can be
obtained in HF REJ, DC and AC positions of B TRIGGER
COUPLING with adjustment of B TRIGGER LEVEL.
p. Set B TRIGGER COUPLING to LF REJ.
q. CHECK—That a stable triggered display cannot be
obtained with adjustment of B TRIGGER LEVEL.
r. Set CH 1 VOLTS/DIV to 5 mV and set B TRIGGER
COUPLING to AC.
s. Set the low-frequency generator for a 3 division,
60 hertz display, then set CH 1 VOLTS/DIV to 50 mV.
t. CHECK—That a stable triggered display can be
obtained in AC and DC positions of B TRIGGER
COUPLING with adjustment of B TRIGGER LEVEL.
u. Set the low-frequency generator for a 2 division,
60 hertz display, then set B TRIGGER SOURCE to EXT
(100 millivolts at external input).
v.
w.
x.
y.
CHECK—Repeat part o.
Set B TRIGGER COUPLING to LF REJ.
CHECK—Repeat part q.
Set B TRIGGER COUPLING to AC.
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Tektronix 475 Specifications

General

Brand	Tektronix
Model	475
Category	Test Equipment
Language	English