HP 8082A Operating And Service Manual page 56

Table 5-21. Ampiitude, Risetime, Overshoot
(Slower Transition Times)
STEP
1
AMPLITUDE max.
2 Verify tests 3b, 4e, 5,6, 7, 8, 16 of Table 5-16.
Adjust A8 R16, RI 7 for max output voltage > 5.1 V then
3
optimize settings for acceptabte pulse shape.
4 Readjust A6 R16 fiir a baseline shift a-40mV
(worst case: botb channels, norm and compl).
Set amplitude vernier CCW (i.e. 2V output). If a hook is
5
apparent on leading edge, adjust A4 R16, then A4 R17, for an
acceptable pulse shape. Repeat steps 3 and 4 and
compromise.
6 With max output voltage, and with transition time
verniers CW, compare the output amplitudes &I both channels
and for norm and compl. pulses) in the fastest transition time
range with those in any of the slower ranges If the pulse
amplitudes are not within 1OOmV of each other, increase the
smaller amplitude &ep 3 of this, or previous, table).
VERNIERS CW
Table 5-22. Pulse Shape
STEP
10 TRANSITION TIME
11 LEADING VERNIER
12 TRAILING VERNtER
2
constant slope.
3 Set leading edge vernier CW. Rotate trailing edge vernier,
observing leading edge.
Readjust A5 R136 for a constant leading edge slope.
4 Set trailing edge vernier CW. Rotate leading edge vernier
observing trailing edge.
5 Increase rep rate until waveform is triangular (may
possibly be distorted). Verify that the amplitude decreases.
6 Readjust A5 R171, RI72 for a clean triangular wave
form.
7 Repeat steps 2 to 4.
Set both transition time verniers CW and adjust A5 R213
affects only the CW transition time of range 5n-5On and
s l o w e r ) .
9 Repeat steps 2 8 if adjustment was ma& in step 8.
to
and Transition Times
c c w
CW
a