Appendix C: Performance Verification
m. CHECK — Display amplitude is 0.1 division or less.
n. Disconnect the test equipment from the instrument.
□ Step 12: Check Store Pulse Width Amplitude
a. Set:
CH 2 VOLTS/DIV
CH 2 AC-GND-DC
SEC/DIV
X I0 Magnifier
STORE/NON-STORE
0.5 V
AC
0.05 ps
On {knob out)
NON-STORE (button
out)
b. Connect the pulse generator pulse-period output via a 50 Q coaxial
cable and a 50 O termination to CH 2 OR Y input connector.
c. Set the generator to produce a 0.1 ms period, 10 ns pulse duration,
five division display.
d. Set X I0 Magnifier off (knob in).
e. Set the Pulse Generator period to 1 ms.
f. Set SEC/DIV to 1 ms.
g. Set:
STORE/NON-STORE STORE (button in)
Acquisition MODE PEAKDET
h. Adjust Horizontal POSITION control to center trace horizontally.
i. CHECK — The amplitude of the display is 2.5 divisions or greater.
j. Set the SEC/DIV switch to 0.1 sec.
k. CHECK — The amplitude of the display is 2.5 divisions or greater.
l. Disconnect the test equipment from the instrument.
Horizontal System Checks
Equipment Required (see Table A-7):
Calibration Generator 50 Q BNC Precision
Cable
Leveled Sine Wave Generator
Time-Mark Generator
50 O BNC Termination
Initial Control Settings:
Vertical
CH 1 POSITION
MODE
X-Y
BW LIMIT
VOLTS/DIV
CH 1 VOLTS/DIV Variable
CH 1 AC-GND-DC
Midrange
CH 1
Off (button out)
Off (button out) CH 1
0.5 V
CAL detent
DC
2221A User Manual
A -37
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