Tektronix 070-8462-03, Instruction Manual

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Adjustment Procedure
1735 HD High Definition Waveform Monitor
6–7
c. Connect the voltmeter between the –10 V test point (pin 3 of A3U11)
and ground.
d. Check for –10 V,
±
2%.
e. Connect the voltmeter between the +8 V test point (pin 2 of A3U2) and
ground.
f. Check for +8 V,
±
2%.
g. Connect the voltmeter between the –5 V test point (pin 3 of A3U12) and
ground.
h. Check for –5 V, 2%.
3. Adjust Plate Average
a. Connect the voltmeter leads between A3TP1 and A3TP2. See Figure 6–2
for locations.
b. Adjust A3R108 (Plate Avg) for +5 V.
c. Remove the voltmeter leads from the test points.
Refer to Figure 6–1A.
4. Adjust CRT Bias
a. Adjust VERTICAL and HORIZONTAL Position controls to place the
display at center screen.
b. Turn the front-panel SCALE and INTENS controls fully counterclock-
wise.
c. Adjust A1R52 (CRT Bias) until the trace is just extinguished.
d. Set the front-panel INTENS and SCALE controls for desired brightness.
5. Adjust Trace Rotation
a. Select CH 2A INPUT on the 1735 HD.
b. Use the VERTICAL Position control to place the trace on the base line.
c. Adjust the front-panel TRACE ROTATION control so the trace is
parallel to the base line.
d. Select CH 1A INPUT on the 1735 HD.
6. Adjust Center Focus, Astigmatism, and Geometry
a. Select the 1735 HD MENU. The MENU readout will be displayed on
screen.
Power Supply Board (A1)