Calibration
Procedure 465B
Service
Adjustment Procedure
DISPLAY
AND
Z
AXIS
Equipment Required
1. DC Voltmeter
5.
50
O
Bnc
Termination
2. Test Oscilloscope
6. 10X
Probe
3. Time-mark Generator 7. 3 inch Slotted
Screwdriver
4 50
0 Bnc Cable 8. Low-capacitance
Slotted Screwdriver
See
adjustment locations i
in the Diagrams section tor adjustments and test
points (TP).
465B Control Settings
Power Controls
Regulating Range Selector Medium
Line Voltage Selector 115 V
POWER ON
CRT Controls
INTENSITY
FOCUS
SCALE ILLUM
As desired
Best focused display
Fully counterclockwise
Vertical Controls
(both Channels if applicable)
VOLTS/DIV
VAR
POSITION
AC-GND-DC
VERT
MODE
INVERT
20
MHz BW
LIMIT
5 mV
Calibrated detent
Midrange
GND
CH 1
Normal (button out)
Full bandwidth
(button out)
Sweep Controls
HORIZ DISPLAY
DELAY TIME POSITION
A
TIME/DIV
VAR TIME/DIV
X10MAG
POSITION (Horizontal)
A TRIGGER HOLDOFF
A
Fully Counterclockwise
X-Y
Calibrated detent
Off (button out)
Midrange
NORM
1. Check/Adjust CRT Grid
Bias
(R4109)
a. Connect the digital voltmeter common lead to
chassis ground and the + lead to TP4217. (TP4217 is
accessible
through
a hole in the high voltage cover
)
b Set
the INTENSITY control
for
+20
V
on the digital
voltmeter.
c.
CHECK—
Display
for a
well
defined,
low
intensity
dot Use FOCUS and ASTIG controls as needed.
d ADJUST—CRT Grid Bias (R4109) for a visible dot,
then
back
off control until the dot just disappears.
Triggering Controls
(both A and B if applicable)
LEVEL
SLOPE
COUPLING
SOURCE
TRIG MODE
As needed for
a
stable
display
+
AC
NORM
AUTO
2. Check/
Adjust
Trace
Alignment (TRACE
ROTATION)
a
Set:
A
TIME/DIV
INTENSITY
SCALE ILLUM
0.5 ms
As desired
As desired
@
4-25
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