Performance Check Procedure—2215A Service
i. Repeat parts d through f.
e. Set CH 1 VOLTS/DIV switch to 50 mV.
j. Set:
HORIZONTAL MODE A
A SEC/DIV
0.1
ns
X I0 Magnifier
On (knob out)
k. Set the generator to produce a 60-MHz, 1.0-division
display.
I. Repeat parts d through f.
m. Set:
VERTICAL MODE
HORIZONTAL MODE
A&B INT
CH 1
A
VERT MODE
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.
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.
3. Check External Trigger Ranges
a. Set:
CH 1 VOLTS/DIV
A SEC/DIV
X I0 Magnifier
A TRIGGER Mode
0.5 V
20 ns
Off (knob in)
NORM
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.
p. Disconnect the test equipment from the instrument.
2. Check External Triggering
a. Set:
VERTICAL MODE CH 1
CH 1 VOLTS/DIV 5 mV
HORIZONTAL MODE A
A SEC/DIV 0.1
ns
X I0 Magnifier Off (knob in)
A SOURCE EXT
b. Connect the leveled sine-wave generator output via a
50-0 cable, a 50-0 termination, and a dual-input coupler to
both the CH 1 or X and EXT INPUT connectors.
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.
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.
g. CHECK— Display is not triggered (no trace) at either
extreme of rotation.
4. Check Single Sweep Operation
a. Adjust the A TRIGGER LEVEL control to obtain a sta
ble display.
b. Set:
Channel 1 Input Coupling GND
A SOURCE INT
4-12
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