Tektronix 2230

Adjustment Procedure—2230 Service
f. Set the HORIZONTAL MODE switch to B. s. Repeat parts e through g.
g. CHECK—Stable display can be obtained by adjust- t. Set:
ing the B TRIGGER LEVEL control in a position other than
the B RUNS AFTER DLY position for both the OUT and VERTICAL MODE CH 2
IN positions of the B TRIGGER SLOPE switch. HORIZONTAL MODE A
A&B INT CH 2
h. Set:
VERTICAL MODE CH 2
HORIZONTAL MODE A
A&B INT CH 2
i. Move the cable from the CH 1 OR X input connector
to the CH 2 OR Y input connector.
j. Repeat parts e through g.
k. Set:
HORIZONTAL MODE A
A SEC/DIV 0.1 ms
X I0 Magnifier On (knob out)
I. Set the generator to produce a 60 MHz, 1.0-division
display.
m. Repeat parts e through g.
n. Set:
VERTICAL MODE CH 1
HORIZONTAL MODE A
A&B INT , CH 1
o. Move the cable from the CH 2 OR Y input connector
to the CH 1 OR X input connector.
p. Repeat parts e through g.
q. Set:
HORIZONTAL MODE A
A SEC/DIV 0.05 ms
r. Set the generator to produce a 100 MHz, 1.5-
division display.
u. Move the cable from the CH 1 OR X input connector
to the CH 2 OR Y input connector.
v. Repeat parts e through g.
w. Disconnect the test equipment from the instrument.
5. Check HF Reject A Triggering
a. Set:
VERTICAL MODE CH 1
VOLTS/DIV (both) 50 mV
HORIZONTAL MODE A
A SEC/DIV 5 mS
A TRIGGER Mode NORM
A TRIGGER LEVEL Midrange
A&B INT CH 1
b. Connect the low-frequency generator output via a
50 fl cable and a 600 a termination to the CH 1 OR X
input connector.
c. Set the low-frequency generator output to produce a
250 kHz, 1-division display.
d. Adjust the A TRIGGER LEVEL control for a stable
display.
e. Set HF REJECT switch to ON.
f. CHECK—Stable display cannot be obtained by
adjusting the A TRIGGER LEVEL control for each switch
combination given in Table 5-9.
g. Set:
VERTICAL MODE CH 2
A&B INT CH 2
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