Tektronix 549 Instruction Manual page 119

Calibration— Type 549
Typ e 5 4 9
CRT controls
IN T E N S IT Y
FOCUS
A STIG
Storage System
EN HANC E MODE
ENHANC E LEVEL
UPPER and LO W ER
SCREEN STO RAG E
Erase Program
SCREEN SELECTOR
V IE W IN G TIM E
A U TO ERASE
H O R IZO N TA L DISPLAY
NO RM -SINGLE SW EEP
Time Base A
TIM E/C M
VARIABLE
LEVEL
S TA B ILITY
6-48
F ig . 6 - 4 9 . E q u ip m e n t s e t u p f o r s t e p s 5 S th ro u g h 5 8 .
Fully counterclockwise
Midrange
Midrange
OFF
Counterclockwise
STO RE
FULL
M IN
AFTER SW EEP
A
SING LE SW EEP
.5 mSEC
CAL
Clockwise
Clockwise
MODE
SLOPE
C O UPLING
SOURCE
Vertical Plug-In U n it (Type 1A1 o r equivalent)
Volts/cm
Input Selector
Test Oscilloscope
Time/cm
Volts/cm
Coupling
Triggering
55. Adjust Erase Pulse
a. Equipment setup is shown in Fig. 6-49.
b. Adjust IN T E N S IT Y , FO C US and A STIG controls for a
well focused trace of nominal brightness.
probe to TP Upper terminal.
c. Preset Erase Negative R1043, for maximum negative
amplitude of the erase pulse.
negative pulse to lim it or square off.)
TRIG
+
AC
NORM
1,0
Gnd
20 msec
10
AC
For a triggered display
O
Connect a 1 0 X
(Do not permit bottom of