Appendix C: Performance Verification
A t
q-
Set:
Vertical MODE CH 2
SOURCE
CH 2
r. Move the cable from the CH 1 OR X input connector to the CH 2 OR
Y input connector.
s. Repeat part d.
t. Disconnect the test equipment from the instrument
n Step 2: Check HF Reject Triggering
a. Set:
Vertical MODE
VOLTS/DiV (both)
SEC/DIV
X I0 Magnifier
Trigger Mode
Trigger
LEVEL-
SOURCE
CH 1
50 mV
5 gs
Off (knob in)
NORM
Midrange
CH 1
b. Connect the low frequency generator output via a 50 Q cable and a
600 Q termination to the CH 1 OR X input connector.
c. Set the low frequency generator output to produce a 250 kHz, one
division display.
d. Adjust the Trigger LEVEL control for a stable display.
e. Set the COUPL switch to HF REJ position.
f. CHECK — Stable display cannot be obtained by adjusting the
Trigger LEVEL control for each switch combination given in Table
A-12 on page A-44.
f l Step 3: Check LF Reject Triggering
a. Set:
TriggerLEVEL Midrange
COUPL NORM
b. Set the generator to produce a 25 kHz, 0.35 division display,
a Set the COUPL switch to LF REJ position.
d. CHECK — The display cannot be obtained by adjusting the Trigger
LEVEL control.
e. Set the generator to produce a 50 kHz, 0,35 division display.
f. CHECK — Stable display can be obtained by adjusting the Trigger
LEVEL control.
g. Disconnect the test equipment from the instrument
2221A User Manual
A-45
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