Figure 9-3 Blanking Waveforms - HP 8560E Service Manual

5. The waveforms in
6. Set the oscilloscope to the following settings to expand the first and
Figure 9-3 Blanking Waveforms
Chapter 9
Figure 9-3 on page 477
the vectors being drawn. To do this, U215B is used to adjust the
leading edge, and U215A is used to adjust the trailing edge. The first
six horizontal divisions show the line drawing mode where the
VECTOR pulses are 6 µs apart. The remaining divisions shows
character mode (VECTOR pulses 3 µs apart). The BLANK pulses are
synchronized to the VECTOR pulses by U214B. The fourth trace
shows the double pulses which delay the leading and trailing edges
of the blanking pulses.
fourth traces. This displays how the rising edges of U213-13
determine the transitions of the blanking pulses. See
page 478.
Amplitude scale ............................................................. 4 V/div
Amplitude offset ............................................................. +2.5 V
Sweep time .................................................................. 2 µs/div
Delay from trigger ............................................................ 96 µs
Triggering ................................................................... External
Controller Section
Display Problems (8560E)
must match the timing of
Figure 9-4 on
477