Figure 7. Test instrument - left side view.

Calibration Procedure For Oscilloscope Os-266(P)/U And Types 7844/R7844 Page Navigation
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TB9-6625-2131-24

b. Adjustments

(1) Adjust VERT CTR R1714 A13 (fig. 7) (fig. 8 for type R7844) until BEAM 1 trace

is aligned with horizontal graticule centerline (R).

(2) Adjust VERT CTR R1714 A13 until trace remains within 0.5 division of

horizontal graticule centerline while VERTICAL MODE switches are simultaneously

switched from BEAM 1 RIGHT and BEAM 2 LEFT, and while adjust BA714 for best

compromise (R).

(3) Adjust R2714 A16 (fig. 1) until trace remains within 0.5 division of horizontal

graticule centerline while VERTICAL MODE switches are simultaneously switched from

BEAM 2 RIGHT and BEAM 1 LEFT, and while adjusting R2714 for best compromise (R).

(4) Adjust VERT CTR R2714 A16 (fig. 1) (fig. 8 for type R7844) until BEAM 2 trace

is aligned with horizontal graticule centerline (R).

Figure 7. Test instrument - left side view.