Tektronix 310A, Instruction Manual, Page: 65 / 132

Performance Check/Calibration—Type 310A
S q u a r e - w o v e
g e n e r a t o r
10X
probe
1__
~ N l
1
Tuning
rod
t
Three-inch
screwdriver
i
Low-capacitanco
scrowdriver
/
4 2 -inch
5 0 o h m BNC
/
B N C -'o -p o tt
ad opte r
t
GR to BNC
ad a p te r
\ T
cable
SO-ohm
BNC
I v r m l n a l i o r i
9X
BNC
a ttenua tor
JX BNC
attenw alor
Ftg. 6 -1 1 . E qu ipm ent raquirad foe »t«p» 17 through 2 1 .
CRT controls
1 7 . Check/Adjust Volts/Division Switch Series
FOCUS Adjust for well defined display
Compensation
IN TEN SITY Adjust for visible display
a Equipment required for steps 17 through 21 is shown
SCALE ILLUM As desired (power on)
in Fig. 5-11.
Vertical controls
b. Connect the square-wave generator to the vertical IN ­
VO LTS /D IV
.2
PUT connector through the GR to BNC adapter, 42 inch
Variable
CALIBRATED
50-ohm BNC cable, 6X BNC attenuator and the 50-ohm
Input Coupling
DC
BNC termination, in given order.
Trigger controls
+ INT
c. Set the square-wave generator for a four-division dis­
play at one kilohertz.
TRIGGER
Trigger Coupling Mode AUTO
TRIG LEVEL Midrange
NOTE
S TA B ILITY
PRESET
Tolerances given in steps 17 through 21 are not
Sweep controls
instrument specifications, but are provided only to
determine if recalibration is necessary.
T IM E /D IV 200 pSEC
Variable
CALIBRATED
Horizontal Display
X I MAG d. CHECK—CRT display for square corner within 3%.
Other controls
-
VERTICAL
Midrange
e. A D JU S T -C 310 (soo Fig. 5-12A) for best square
POSITION
corner on the displayed waveform (use low-capacitance
HO RIZONTAL
POSITION
Midrange
screwdriver).
CALIBRATOR OFF
f. Rotate the Variable V O LT S /D IV control fully
counterclockwise.
Rear-panel controls
g. Set the square-wave generator for a four division
H O R IZ G A IN
Clockwise
display.
5-15