Tektronix 2221 - Page 139

Appendix A - 2221 Operators
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h . Set the generator to produce a 5 - division display .
8. Check Bandwidth
a .
Set :
i . Repeat parts d and e using the Channel 2 controls .
1
VERTICAL MODE
VOLTS
/
DIV
(
both )
SEC / DIV
STORE / NON - STORE
CH 2
2 mV
0.2
ms
NON -
STORE (
button
out
)
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7. Check Store Aberrations
a . Reconnect the 10x attenuator and 50 2 termination
( if previously removed ) and reduce the generator amplitude
to
minimum .
b .
Connect the
leveled sine - wave
generator output via
a 508 cable and a 50 2 termination to the CH 2 OR Y
input
connector
.
b . Set the CH 2 VOLTS / DIV switch to 2 mv .
C. Set the generator to produce a 50 kHz , 6 - division
display
.
C. Set the generator to produce a 5 - division display .
or
d . CHECK - Display amplitude is 4.2 divisions
greater as the
generator output
frequency is
increased up
to the
value
shown
in
Table A - 4
for the
corresponding
VOLTS /
DIV
switch
setting .
d . Set :
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STORE / NON - STORE
SAVE / CONT
STORE
(
button in )
CONT
Table A - 4
e . Allow
the
acquisition cycle
to
complete and
press
the SAVE / CONT button to activate SAVE .
Settings
for
Bandwidth
Checks
VOLTS / DIV
Switch
Setting
Generator
Output
Frequency
f . CHECK - Display aberrations are within 4 % ( 0.2 divi
sion
or less
) .
2 mv
50 MHz
5 mV to 5 V 60 MHZ
g . Repeat part f for each of the following VOLTS / DIV
switch settings : 5 mV through 0.5 V. Adjust the generator
output and attach or remove the 10X attenuator as neces
sary to maintain a 5 - division display at each VOLTS / DIV
switch
setting .
e . Repeat parts
C and d for
all
indicated CH 2
VOLTS
/ DIV
switch
settings
, up to
the
output
voltage
upper limit of the sine - wave generator being used .
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1
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h .
Disconnect the
cable from the
CH 2 OR
Y input
con
nector
.
Reconnect the 10x
attenuator ( if
previously
removed ) and reduce the generator amplitude to minimum .
f . Move the cable from the CH 2 OR Y input connector
to the CH 1 OR X input connector . Set the VERTICAL
MODE switch to CH 1 .
i . Connect the cable to the CH 1 OR X input connector
and set the VERTICAL MODE switch to CH 1 .
g . Repeat
parts c and
d for
all indicated
CH 1
VOLTS
/
DIV
switch
settings
,
up to the
output
voltage
upper limit of the sine - wave generator being used .
j . Set the generator to produce a 5 - division display .
9. Check Repetitive Store Mode
a .
Set :
k . Repeat parts
e and f using
the
Channel 1 controls .
CH 1 VOLTS / DIV
SEC / DIV
10
mV
0.2
ms
1. Disconnect the test equipment from the instrument .
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A - 7