Calibration Procedure—
465B Service
Performance Check
b. Connect
the calibration generator fast-rise
+
output
to
the CH
2
input connector via a 50 0 bnc cable, 10X, 5X,
or 2X bnc attenuator,
and
50
O
bnc
termination. Set the
generator frequency to 100
kHz and adjust output con-
trols for
a
vertical display of 5 divisions. Adjust the
generator output and add or
remove attenuators
as
necessary to
maintain
a
5-division displaythroughoutthis
check.
c.
CHECK—Flat-top waveform is within 4% or less (0.2
division) for the 5 mV, 10 mV, and 20
mV positions of the
VOLTS/DIV switch.
d. Movethetest
setuptotheCH 1 input connector and
set the VERT MODE switches to
display CH 1.
e.
CHECK—Repeat part
c
for Channel 1.
f. Disconnect the
test setup.
15.
Check CH
1
and CH 2 Bandwidth
a.
Set:
VOLTS/DIV (both) 5
mV
ATIME/DIV 0.2 ms
A
TRIGGER LEVEL Fully clockwise
b.
Connect the leveled
sine-wave generator
output to
the CH 1 input
connector via
a 50
O bnc cable, 10X bnc
attenuator, and 50
Q
bnc
termination.
h. Disconnect the test setup.
16. Check Cascaded Gain and Bandwidth
a. Set:
VERT MODE CH 2
VOLTS/DIV (both) 5 mV
TIME/DIV 1 ms
b.
Connect the CH 1 VERT SIGNAL output connector
(on
the
465B rear
panel) to the CH
2
input connector via a
50
Q cable and
a 50
0 bnc termination.
c.
Connect the calibration generator standard-
amplitude output to the
CH
1 input
connector via
a
50 fi
bnc cable. Set the calibration generator output for 5 mV.
d.
CHECK—Display vertical amplitudeis5divisionsor
greater.
e.
Remove the calibration generator signal from the
CH 1 input connector.
f.
Connect the leveled sine-wave generator output to
the CH 1 input connector via a 50 Q bnc cable, 10X bnc
attenuator, and 50 O bnc termination. Set the generator
frequency
to 50 kHz
and
adjust output
controls for a
vertical display of 5 divisions. Adjust the generator output
frequency to 50 MHz.
c. Set the sine-wave generator output
for
a
vertical
display of 5 divisions at 50
kHz. Change the sine-wave
generator
output
frequency to 100 MHz.
g.
CHECK—Display amplitude is 3.5 divisions or
greater.
d. CHECK—Display
amplitude is 3.5 divisions or
greater.
e. Repeat parts c and d
for all CH 1 VOLTS/DI
V
switch
settings from 5 mV to 0.5 V. Adjust the
generator and
add
or
remove attenuators as needed to
maintain
a
5-division,
50 kHz reference
display.
f Move the
sine-wave generator
output
signal from the
CH 1 input to the
CH 2 input connector and set the VERT
MODE switches to display CH 2.
g.
Repeat parts
c
and
d
for all CH
2
VOLTS/DIV switch
settings from 5 mV ro 0.5 V.
h. Disconnect the test setup.
17.
Check Trigger View Centering and Gain
a. Set:
VERT MODE
A TIME/DIV
A TRIGGER COUPLING
A TRIGGER SOURCE
A TRIG MODE
A
TRIG
VIEW
0.2 ms
DC
EXT
AUTO
b. Connect the calibration generator standard-
amplitude output to the A External Trigger input
connec-
tor via a 50 £1 bnc
cable.
Use no termination. Set
the
generator output to 0.5 V.