Figure 3. Calibrator - adjustment locations.

Calibration Procedure For Oscilloscope Os-266(P)/U And Types 7844/R7844 Page Navigation
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9. Calibrator Repetition Rate

a. Performance Check

(1) Connect TI CALIBRATOR output to frequency counter.

(2) Press 4V CALIBRATOR pushbutton. If frequency counter does not indicate

between 997.5 and 1002.5 Hz, perform b below.

b. Adjustments. Adjust 1 kHz A1R904 (fig. 1) (fig. 3 for type R7844) until frequency

counter indicates 1000 Hz (R).

10. Calibrator Risetime

a. Performance Check

(1) Connect TI CALIBRATOR output to oscilloscope.

(2) Adjust oscilloscope for a well defined, stable display.