Tektronix 2230 Service Manual

Adjustment Procedure— 2230 Service
3. Check External Clock
a. Set:
CH 1 VOLTS/DIV 1 V
X-Y Off (button out)
A SEC/DIV 1 ms
b. Connect the pulse generator high-amplitude output
via a 50 Q cable and a 50 Q termination to the CH 1 OR X
input connector.
c. Set the generator to produce a 1 kHz, 5-division
display.
d. Disconnect the cable from the CH 1 OR X input con
nector and connect it to the.BNC male-to-tip plug via BNC
female-to-BNC-female connector.
e. Insert the BNC male-to-tip plug signal lead and
ground lead into pin 1 and pin 9 respectively of the X-Y
Plotter connector.
f. Set the A SEC/DIV switch to 0.1 sec.
g. Connect the calibration generator high-amplitude
output via a 50 Q cable and a 50 D termination to CH 1
OR X input connector.
h. Set the generator to produce a 100 Hz, 5-division
display.
i. Set:
A SEC/DIV EXT CLK
STORE/NON STORE STORE (button in)
SAVE/CONTINUE CONTINUE (button out)
j. CHECK—The 100 Hz signal is displayed on the
screen and updated.
k. Set the SAVE/CONTINUE switch to SAVE (button
in).
I. CHECK—The display is saved.
m. Disconnect the test equipment from the instrument.
4. Check X-Y Plotter
a. Connect the digital voltmeter low lead to either
chassis ground or pin 9 (signal ground) of the X-Y Plotter
connector. Connect the volts lead to pin 3 (X Output) of
the X-Y Plotter connector.
b. Set the digital voltmeter to the 20 V scale.
C. Set the WAVEFORM REFERENCE/MENU SELECT
switch to MENU SELECT (button out).
d. Use the Menu controls to select PLOT and then ON
for GRATICULE.
e. Press in momentarily the CURSORS button to
activate the X-Y Plotter.
NOTE
Voltage reading of the X Output will be negative left
of the center vertical graticule line and positive to the
right of the center vertical graticule line. Voltage
reading of the Y Output will be negative below the
center horizontal graticule line and positive above
the center horizontal graticule line.
f. Record the voltage reading as the instrument plots
the 1st and the 10th graticule line (as the intensity spot
moves along the graticule line).
g. CHECK—The voltage difference between the 1st
and 10th graticule line is between 4.5 V and 5.5 V.
h. Move the voits lead of the voltmeter from pin 3 (X
Output) to pin 5 (Y Output) of the X-Y Plotter connector.
i. Press in momentarily the CURSORS button to
activate the X-Y Plotter.
j. Record the voltage reading as the instrument plots
the top and the bottom graticule line (as the intensity spot
moves along the graticule line).
k. CHECK—The voltage difference between the top
and bottom graticule lines is between 3.6 V and 4.4 V.
I. Disconnect the test equipment from the instrument.
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Tektronix 2230 Specifications

General

Brand	Tektronix
Model	2230
Category	Test Equipment
Language	English