CAL 06 - Vertical Transient Response (CONT)

TB-9-6625-2294-35 Oscilloscope Tektronix Types 2465A AND 2467 Manual
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TB 9-6625-2294-35

(7) Display readout will indicate: ADJ ∆ (step) 2, 10 mV 10 ns.

(8) Adjust C403, R411, and L403, (fig. 1) for flattest corner over first 5 ns (R).

(9) Adjust SEC/DIV VAR control fully ccw and adjust CRT TERMINATION (Rl50l)

(fig. 2) for flattest waveform (R).

(10) Adjust ∆ control for flattest waveform. Adjust SEC/DIV VAR control for best

viewing. Total system will tune up best if indicator cursor is in the 7th or 8th divisions.

(11) Adjust SEC/DIV VAR control fully cw to detent.

(12) Press and release lower TRIGGER COUPLING pushbutton. Display readout

will indicate: ADJ ∆ (step) 1, 10 mV, 100 ns.

(13)Adjust R605, R403, C404, and C601 (fig. 1) for flattest response in first 100 ns

(R).

(14) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to CH 1 using a

50Ω feedthrough termination.

(15) Set oscilloscope calibrator LEVEL SINE output to 2 MHz, and 6 divisions of

display.

(16) Change oscilloscope calibrator LEVEL SINE output frequency to 250 MHz.

(17) Increase oscilloscope calibrator LEVEL SINE output frequency from 250 MHz

to 350 MHz. If display amplitude drops below 4.4 divisions adjust HF ADJUST (R417) (fig.

1) (R).

(18) Press and release upper TRIGGER COUPLING pushbutton. Display readout

will indicate: ADJ∆ (step) 2, 10 mV, 100ns.

(19) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to CH 1 using

X10 and X2 attenuators.

(20) Set oscilloscope calibrator EDGE output frequency to 100 kHz and adjust output

amplitude for 5 divisions on display.

(21) Adjust R411, C403, and L403 (fig. 1) and ∆ control for best response. Note

waveform for use in (25) below (R).

(22) Press and release upper TRIGGER COUPLING pushbutton. The crt readout

will indicate: ADJ ∆ (step) 3, 1 0 mV, 10 ns.

(23) Move connection from CH 1 to CH 2.

(24) Set oscilloscope calibrator EDGE output for 5 divisions on display.

(25) Adjust ∆ control so CH 2 waveform matches that noted in (21) above.

(26) Press and release upper TRIGGER COUPLING pushbutton. Display readout

will indicate: ADJ ∆ (step) 4, 2 mV, 10 ns.