S1 Measurement Mode - Tektronix 7D12 Operator's Instruction Manual

13. The measurement readout should remain unchanged
and the sensitivity readout should read 200 mV.
14. Set the M2 RANGE to OUT 20 V.
15. The measurement readout should read within the
limits of iO.OO V to iO.01 V, and the sensitivity readout
should read 2 V.
16. Set the 7012 VERTICAL DISPLAY ATTEN to 5X.
17. The measurement readout should remain unchanged
and the sensitivity readout should read 5 V.
18. Set the M2 RANGE to 2 V.
19. The measurement readout should read within the
limits of ±.OOO V to ±.001 V, and the sensitivity readout
should read 500 mV.
20. Rotate the 7012 VERTICAL DISPLAY POSITION
control fully clockwise and fully counterclockwise. Check
that the vertical display trace can be positioned throughout
the graticule area. Position the trace to the center horizon-
tal graticule line.
21. Set the 7012 GATE to ON.
22. Rotate the 7012 GATE POSITION control fully
counterclockwise and clockwise. Check that the gate trace
can be positioned throughout the graticule area. Position
the gate trace three divisions below the center horizontal
graticule line.
23. Check that the 7012 TRIG'D indicator is flashing.
24. Setthe7D12 TRIGGERING to EXT.
25. The TRIG'D indicator light should be extinguished.
26. Push the MAN button and note that the TR IG'D
ind icator light flashes one time.
27. Set the delaying time-base sweep rate to 50 milli-
seconds per division. The vertical display trace and the gate
trace should start at the same time.
REV. B, SEPT. 1974
M2 Operating Instructions-7D12 Operators
28. Set the 7012 internal Display Mode switch (see Fig.
1-3) to the Alt position. The vertical display trace and the
gate trace should be displayed alternately with each sweep
on the CRT.
29. Return the 7012 internal Display Mode switch to
the Chop position.
30. Remove the shorting-type BNC connector cover
from the M2 INPUT connector.
This concludes the operational check procedure.
8
1
Measurement Mode
31. Set the delaying time-base for delaying sweep
operation with a delay time of 300 microseconds.
32. Set the delayed time-base for a sweep rate of 100
microseconds per division.
33. Set the oscilloscope and time-base to display an
intensified trace.
34. Set the 7012 VERTICAL DISPLAY ATTEN to 2X,
and the M2 RANGE to OUT 20 V.
35. Connect a 4-volt square wave from the oscilloscope
calibrator output to the M2 INPUT connector.
36. Connect the oscilloscope or time-base delayed-
sweep-gate output to the 7012 TRIGGERING EXT IN
connector. Refer to the oscilloscope and time-base instruc-
tion manuals for the location of the delayed-sweep-gate
output.
37. Adjust the delaying time-base to trigger on the
negative slope.
38. Adjust the 7012 VERTICAL DISPLAY POSITION
control to center the square-wave baseline on the center
horizontal graticule line.
39. Position the gate waveform below the vertical
display waveform with the 7012 GATE POSITION control.
40. The readout should read approximately 0.00 V. See
Fig.3-2A.
3-3