Tektronix 323, Instruction Manual

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Calibration— Type 3 2 3
GR to BNC ad opte r
H igh-frequency
constant-am p litu de
sine-w ave generator
Low-frequency
constant-am p litu de
sine-w ave generator
4 2 -inch 50-ohm
BNC cable
Fig. 6 -2 1 . In itia l test equipm ent setup fo r steps 46 throug h 54.
Vertical Controls
VOLTS/DIV
VARIABLE
INPUT
Vertical POSITION
X I0 VERT GAIN
Triggering Controls
TRIGGER
Trig/Horiz Coupling
EXT TRIG OR
HORIZ ATTEN
(side panel)
Horizontal Controls
TIME/DIV
VARIABLE
Horizontal POSITION
X 10 HORIZ MAG
CRT Controls
FOCUS
INTENSITY
Power Controls
POWER
Power Pack (rear panel)
.1
CAL
DC
Midrange
Pushed in
+ AUTO
INT TRIG AC
I X
5 j«s
CAL
Midrange
Pushed in
Adjust for focused display
Adjust for visible display
ON
EXT DC
46. Check Internal Triggering Operation
a. Test equipment setup is shown in Fig. 6-21.
b. Connect the high-frequency constant-amplitude sine-
wave generator to the VERT INPUT connector through the
GR to BNC adapter, 42-inch 50-ohm BNC cable, 50-ohm
BNC termination and the BNC T connector. Connect the
output of the BNC T connector to the EXT TRIG OR HORIZ
INPUT connector with a 42-inch 50-ohm BNC cable.
c. Set the constant-amplitude generator for a 0.3-division
display at 400 kilohertz.
d. CHECK— Stable CRT display is presented with the
Trig/Horiz Coupling switch set to INT TRIG AC and ACLF
REJ.
e. Turn the TRIGGER control clockwise to the variable
positive-slope area.
f. CHECK— Stable CRT display can be obtained with the
Trig/Horiz Coupling switch set to INT TRIG AC and ACLF
REJ. TRIGGER control may be adjusted as necessary to ob­
tain a stable display.
g. Turn the TRIGGER control clockwise to the variable
negative-slope area.
h. CHECK— Stable CRT display can be obtained with the
Trig/Horiz Coupling switch set to INT TRIG AC and ACLF
REJ. TRIGGER control may be adjusted as necessary to ob­
tain a stable display.
6-25