Adjustment Procedure—2215A Service
g. Set:
VERTICAL MODE CH 2
HORIZONTAL MODE A
A&B INT CH 2
h. Move the cable from the CH 1 OR X input connector
to the CH 2 OR Y input connector.
i. Repeat parts d through f.
j. Set:
HORIZONTAL MODE A
A SEC/DIV 0.1 ms
X I0 Magnifier On (knob out)
c. Set the leveled sine-wave generator output voltage to
40 mV and the frequency to 5 MHz.
d. CHECK—Stable display can be obtained by adjusting
the A TRIGGER LEVEL control for each switch combination
given in Table 4-6.
e. Set CH 1 VOLTS/DIV switch to 50 mV.
f. Set the leveled sine-wave generator output voltage to
150 mV and the frequency to 60 MHz. Set the X I0 Magni
fier to On (knob out).
g. Repeat part d.
k. Set the generator to produce a 60-MHz, 1.0-division
display.
7. Check External Trigger Ranges
I. Repeat parts d through f.
m. Set:
VERTICAL MODE
HORIZONTAL MODE
A&B INT
CH 1
A
VERT MODE
a. Set:
CH 1 VOLTS/DIV
A SEC/DIV
X I0 Magnifier
A TRIGGER Mode
0.5 V
20 ms
Off (knob in)
NORM
n. Move the cable from the CH 2 OR Y input connector
to the CH 1 OR X input connector.
o. Repeat parts d through f.
p. Disconnect the test equipment from the instrument.
6. Check External Triggering
a. Set:
VERTICAL MODE CH 1
CH 1 VOLT/DIV 20 mV
HORIZONTAL MODE A
A SEC/DIV 0.1 ms
X I0 Magnifier Off (knob in)
A SOURCE EXT
b. Set the generator to produce a 50-kHz, 6.4-division
display.
c. CHECK—Display is triggered along the entire positive
slope of the waveform as the A TRIGGER LEVEL control is
rotated.
d. CHECK— Display is not triggered (no trace) at either
extreme of rotation.
e. Set the A TRIGGER SLOPE button to IN.
f. CHECK— Display is triggered along the entire negative
slope of the waveform as the A TRIGGER LEVEL control is
rotated.
b. Connect the leveled sine-wave generator output via a
50-fi cable, a 50-Q termination, and a dual-input coupler to g. CHECK— Display is not triggered (no trace) at either
both the CH 1 OR X and EXT INPUT connectors. extreme of rotation.
5-21
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