Jitter And Motion Test Setup - HP 1317A Operating And Service Manual

Model 1317A
MONITOR OSCILLOSCOPE
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MEASURE
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Model 1317A
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Performance Check
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1317 A-L-012
Figure 5-8. Jitter and Motion Test Setup
c. Connect equipment as shown in figure 5-9.
d. Set square wave generator for 500-Hz,
2.5-volt output.
e. Observe displayed waveform. There shall be
less than 0.1 inch of rounding on ground side of
waveform.
f. Reverse X INPUT and Y INPUT. There shall
be iess than 0.1 inch of rounding on ground side of
waveform.
5-38. Z-AXIS BLANKING POLARITY.
5-39. Required Results. With BRIGHTNESS set
to
maximum a -I-volt signal at the Z INPUT shall
blank the CRT. With BRIGHTNESS set
to minimum,
a +l-volt signal at the Z INPUT shall cause maximum
brightness at the CRT.
5-40. Procedure.
a. Perform preoperational checks (Section III).
b. Set 500/10K switch (on board A5)
to 50n.
c. Connect equipment as shown in figure 5-10.
d. Set oscillator frequency to 1 MHz and adjust
amplitude for full screen deflection.
e. Turn BRIGHTNESS cwo CRT shall be blank-
ed during negative pulse excursions.
f. Set pulse generator polarity to positive.
g. Turn BRIGHTNESS ccw. Intensity shall be
maximum during positive excursions.
5-41. Z-AXIS RISETIME.
5-42. Required Result. The risetime of the Z-axis
amplifier shall be less than 20 nanoseconds.
5-43. Procedure.
a. Perform preoperational procedure (Section
III).
b. Set 500/10K switches (on boards Al and A3)
to 10K.
c. Set 500/10K switch (on board A5)
to 50n.
d. Connect equipment as shown in figure 5-11.
5-9