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BEFORE OPERATING
INTRODUCTION
The Tektronix
4658
Oscilloscope
is
a dual-channel,
four-trace portable instrument, providing traces for
two
input
channels, a trigger view from an external trigger
input, and an add function. Calibrated deflection factors
from 5 millivolts/division
to
5 volts/division are provided
by
the
dc-to-100 MHz vertical system for
the
input
chan-
nels and add function. Sweep trigger circuits are capable of
stable
t~iggering
over
the
full bandwidth capabilities of
the
vertical deflection system. The horizontal deflection system
provides calibrated sweep rates from
0.5
second/division
to
0.02
microsecond/division along with delayed sweep
features for accurate relative-time measurements. A X
10
magnifier extends
the
calibrated sweep rate
to
2 nano-
seconds/division. The instrument operates over a wide
variation of line voltages and frequencies with maximum
power consumption
of
approximately
100
watts.
Increased measurement capabilities are achieved by
the
4658
when it
is
equipped with an optional Tektronix
DM44 Digital Multimeter. The DM44 measures 0
to
20
megohms resistance, 0
to
1200
de
volts ( +
or
-).
and
-55°
C
to
+150° C
temperature
(using a temperature
probe). Measurement values are displayed on a 3%-digit
LED
readout while
the
oscilloscope continues normal
operation.
The digital multimeter and oscilloscope combine
to
provide a digital
readout
of
time difference between any
two points
on
the
oscilloscope display. Both time measure-
ment
points are displayed simultaneously
on
the
crt. Direct
measurement
of
frequency
is
provided by a 1/TIME
function.
@
465B/DM44
Operators 1
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