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175A - HP Archive

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Section 111<br />

Figure 3-2<br />

1. Set INTENSITY MODULATION (rear panel) to<br />

INT and SWEEP OCCURRENCE to NORMAL.<br />

2. Set HORIZONTAL DISPLAY toINT SWEEP X1.<br />

3. Set TRIGGER SOURCE to INT.<br />

4. Set SWEEP MODE to PRESET.<br />

5. If signal amplitude is unknown, set SENSI-<br />

TIVITY to 20 VOLTS/CM.<br />

6. Connect signal to vertical INPUT.<br />

7. If trace is not visible, depress BEAM FINDER.<br />

8. Adjust HORIZONTAL, VERTICAL POSITION.<br />

9. Release BEAM FINDER, adjust FOCUS andIN-<br />

TENSITY. Increase sensitivity, if necessary<br />

Figure 3-2. Internal Sweep<br />

Model <strong>175A</strong><br />

to trigger sweep, and readjust POSITION<br />

controls to center trace.<br />

10. For vertical amplitude measurements, set<br />

sensitivity VERNIER to CALIBRATED.<br />

11. Set SENSITIVITY for a vertical display be-<br />

tween 2 and 6 centimeters high.<br />

12. Set TRIGGER SLOPE to trigger onpositive-<br />

or negative-going slope of signal, as desired.<br />

13. Adjust TRIGGER LEVEL, if necessary, for<br />

stable triggering.<br />

14. If time-scale measurements are to be made,<br />

set sweep time VERNIER to CAL.<br />

15. Set SWEEP TIME for horizontal display as<br />

desired.<br />

3-2 01526-2

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