Calibration Procedure—465B Service
Adjustment Procedure
GATES,
CALIBRATOR, AND EXT
Z AXIS
Equipment Required
4 Shorting Strap
1
Test Oscilloscope
5. Calibration Generator
2. 42-inch,
50 O
Bnc
Cable
(2
required)
6. Bnc T Connector
3. Digital
Voltmeter
7. 3-inch Slotted
Screwdriver
See
ADJUSTMENT LOCATIONS 1
in the Diagrams sectinn for 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
B INTENSITY
As desired
Best focused display
As desired
As desired
Sweep Controls
HORIZ
DISPLAY
DELAY TIME
POSITION
A TIME/DIV
B
TIME/DIV
VAR TIME/DIV
X10 MAG
POSITION
A TRIGGER
HOLDOFF
B DLY'D
Fully
counterclockwise
50 ps
50
ps
Calibrated
detent
Off (button out)
Midrange
NORM
1. Check A
and B +Gates
a. Connect
the B +GATE output (from the
rear panel
of the 465B) to the
test oscilloscope via a
50
fi
unter-
minated bnc cable.
Vertical
Controls
(both Channels if
applicable)
VOLTS/DI
V
VAR
POSITION
VERT MODE
INVERT
20 MHz BW
LIMIT
5 mV
Calibrated
detent
Midrange
CH 1
Oft (button
out)
Full
bandwidth
(button out)
b CHECK
—Test oscilloscope display for
a positive-
going pulse
of
+5.5
V in amplitude (within 0.5
V).
c.
Disconnect the
cable from the B + GATE output
and
connect it to the
A + GATE output
d. CHECK—
Test oscilloscope display
for a positive-
going pulse
of
+5.5
V in amplitude
(+0.5 V).
Triggering
Controls
(both A and B if applicable)
LEVEL
SLOPE
COUPLING
A SOURCE
B SOURCE
A TRIG
MODE
Fully clockwise
+
AC
NORM
STARTS
AFTER DELAY
AUTO
e.
Disconnect
test equipment.
2. Check/Adjust Calibrator
DC Level (R4293)
a. Connect a shorting
strap between TP4177 and
TP4178.
b. Connect digital voltmeter
common lead to chassis
ground and + lead
to the
CALIBRATOR
current loop.
@
4-61
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