Tektronix 2221A - Appendix C: Performance Verification; Step 6: Check Bandwidth

Appendix C: Performance Verification
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j. Press in the SAVE/CONT button to select CONT.
k. Position the trace 0.5 division above the bottom horizontal graticule
line using the CH 2 POSITION control.
l. Press in the SAVE/CONT button to select SAVE.
m. CHECK — Trace shift of 0.5 division or less.
n. Press in the SAVE/CONT button to select CONT.
o. Set the Vertical MODE switch to CH 1.
p. Repeat steps g through m for CH 1 trace.
□ Step 6: Check Bandwidth
a. Set:
VOLTS/DiV (both)
AC-GND-DC (both)
SEC/DIV
BW LIMIT
STORE/NON-STORE
2 mV
DC
0.2 ms
Off (button out)
NON-STORE (button
out)
b. Connect the leveled sine wave generator output via a 50 Q precision
cable and a 50 Q termination to the CH 1 OR X input connector.
c. Set the generator to produce a 50 kHz, six division display.
d. CHECK — Display amplitude is 4.2 divisions or greater as the gener
ator output frequency is increased up to the value shown in Table
A-10 for the corresponding VOLTS/DIV switch setting.
Table A-10: Settings for Bandwidth Checks
VOLTS/DIV
Generator
Switch Setting Output Frequency
2 mV
80 MHz
5 mV to 0.5 V
100 MHz
e. 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 gener
ator being used.
f. Move the cable from the CH 1 OR X input connector to the CH 2 OR
Y input connector.
g. Set the Vertical MODE switch to CH 2.
h. 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 gener
ator being used.
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2221A User Manual
A-33