TB 9-6625-2239-24
Figure 2. Tektronix, Type 465 and 465 with options - vertical preamp and attenuator circuit boards.
(13) Repeat technique of (7) through (12) above for CH 2. If oscilloscope calibrator
err display does not indicate within 3% ( 2% for AN/USM-425(V)1), perform b (2) for
Tektronix, Type 465B; b(4) for AN/USM-425(V)1; or b (6) for Tektronix, Type 465.
(14) Repeat technique of (12) above for CH 2 using TI switch settings and
oscilloscope calibrator output voltage listed in table 4. Oscilloscope calibrator err display
will indicate 3% ( 2% for AN/USM-425(V)1) for each setting.
b. Adjustments
(1) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton to
adjust output for 0.0% indication on err display. Adjust R1482 (fig. 3) for 6 divisions of
vertical display. If R1482 does not adjust to 6 divisions, adjust R1482 to midrange; then
adjust R2025 (R2005 for SN B030000 and below) (fig. 3) for 6 divisions of vertical display (R).
(2) Rotate oscilloscope calibrator knob located below EDIT FIELD pushbutton to
adjust output for 0.0% indication on err display. Adjust R1882 (fig. 3) for 6 divisions of
vertical display (R).
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