Tektronix 2221 - Page 140

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Appendix A
-- 2221
Operators
11.
Check
Bandwidth Limit
Operation
b . Set
the
generator to
produce
a 50 kHz
, 6 -
division
display .
a .
Set :
C.
Set
:
On (
button in )
10 mv
20
us
0.05
us
SEC / DIV
X10
Magnifier
BW LIMIT
CH 1
VOLTS
/ DIV
SEC
/
DIV
TRIGGER Mode
INT
STORE / NON - STORE
On (
knob
out
)
P - P AUTO
VERT
MODE
NON - STORE (
button out )
U
d . Set the generator to produce a 60 MHz display .
b . Set the
generator to
produce a 50 kHz
, 6 - division
display
.
บ
e
.
Set :
STORE / NON - STORE
SAVE /
CONT
STORE (
button in )
CONT
C. Increase the generator output frequency until the
display
amplitude
decreases to 4.2
divisions .
NOTE
Allow the points to accumulate for a few seconds
before
saving
the display .
d . CHECK - Generator output frequency is between
8.5 and 11.5 MHZ .
u
f . CHECK — The 60 MHz display will accumulate and
store .
e . Disconnect the test equipment from the instrument .
g . Set the VERTICAL , MODE switch to BOTH and
ALT .
12. Check Common - Mode Rejection Ratio
a .
Set :
h . Repeat
part f .
BW
LIMIT
CH 2 VOLTS / DIV
INVERT
Off (
button
out
)
10 mv
On (
button in )
U
u
10.
Check
Single
Sweep Sample
Acquisition
a .
Set
:
b .
Connect the
leveled sine - wave
generator
output
via
a 50 2 cable , a 50 2 termination , and a dual - input coupler
to the CH 1 OR X and the CH 2 OR Y input connectors .
CH 1
5
us
VERTICAL MODE
SEC
/ DIV
X10
Magnifier
TRIGGER
Mode
INT
SAVE / CONT
Off (
knob in )
NORM
CH 1
CONT
C. Set the
generator
to
produce a 50
MHZ , 6 -
division
display .
u
b . Set the
generator to
produce a
50 kHz , 6 -
division
display
.
d . Vertically
center
the
display
using the
Channel 1
POSITION control . Then set the VERTICAL MODE switch
to CH 2 and vertically center the display using the Chan
nel 2 POSITION control .
C. Press in the TRIGGER Mode SGL SWP button .
e . Set the VERTICAL MODE Switches to BOTH and
ADD .
d . Set the generator output to 2 MHz .
e . Press in the TRIGGER Mode SGL SWP button .
f . CHECK - Display amplitude is 0.6 division or less .
u
envelope
f . CHECK- The
minimum
peak
- to
-
peak
amplitude is
greater than
5.6 divisions .
g . If the check in part f meets the requirement , skip to
part p . If it does not , continue with part h .
A - 8