Crt - HP 1331A Operating And Service Manual

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Model 1331A
pensate
any added
attenuators. This
can
be done by
applying a
1 kHz square wave of
appropriate
ampli-
tude to
each added
attenuator
and adjusting
the
series capacitance
to minimize the distortion at the
maximum voltage
excursion
end
of the deflection on
the
CRT.
If
a
sawtooth generator is available, its
output
can
be applied to the opposite amplifier to
display a square wave on the CRT. In that case, adjust
the series capacitance to obtain the flattest possible
top to the square wave.
5-93.
INPUT SIGNAL AMPLITUDES.
5-94. After phase shift
and attenuator
compensation
have been
accomplished,
the remaining
adjustments
can
be made by modifying the
amplitudes
of the
signals given
in the adjustment procedures. For in-
stance,
if the
adj ustment
procedure
calls
for a 1 V
p-p
signal
and
the attenuation ratio of the added
attenuator
is
3:1,
then the
amplitude
of the input
signal
should
be changed to
3V
p-p.

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