Heathkit IO-4550 User Manual

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INTRODUCTION
This Oscilloscope is a portable, triggered-sweep, dual-trace,
DC-to-10 MHz, laboratory-grade instrument. Outstanding
features such as the fast vertical rise time, good trace
brightness, and the high input sensitivity make the
Oscilloscope ideal for the wide range of measurements
typically encountered in electronics, development
laboratories, and scientific research. In addition, the rugged
construction and dependable operation make it a versatile
tool for either the hobbyist or the service technician.
Each of the two identical vertical input channels provides a
maximum signal sensitivity of 10 millivolts/centimeter.
Their attenuator networks can be switched through 11
calibrated ranges to set the deflection factor from 10
millivolts/centimeter to 20 volts/ centimeter.
Several modes of signal display are selected by each
channel's position control and the Time Base switch. Either
or both channels can be displayed as a function of time or as
a function of each other. At slower sweep speeds, the
vertical channel signals are alternately displayed at a 200
kHz (approximately) rate (chopped mode) so both signals
appear as a function of the same time base. For faster sweep
speeds, both signals are displayed alternately (alternate
mode) on successive sweeps. During X-Y operation, the
Channel Y1 (X) circuits provide horizontal (X axis)
deflection and the Channel Y2 (Y) circuits provide vertical
(Y axis) deflection.
Calibrated time-base ranges from .2 seconds/centimeter to .2
microseconds/centimeter are readily switched in a 1-, 2-,
5-step sequence. A control on the Time Base switch provides
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variable sweep speeds between switch positions. Any sweep
speed can be expanded 5 times when the X5 control is
pulled out, giving a maximum sweep speed of 40
nanoseconds/centimeter.
The Trigger Select switch and Level control allow the time
base to be precisely triggered at any point along the positive
or negative slope of the trigger signal. Various trigger signals
can be selected. These include a sample of Channel Y1 or
Channel Y2 input signals, an externally applied trigger
signal, or a sample of the line voltage. The Trigger Mode
switch controls the trigger input bandpass. A special TV
position cuts off unwanted high frequency signals. This is
especially useful when you want to trigger on TV vertical
frame signals.
A calibrated 1-volt peak-to-peak square wave signal is
provided through a front panel connector, allowing easy
probe compensation, vertical amplifier calibration, and
comparison.
Front panel display controls include Intensity, Focus, and
Vertical and Horizontal position. An additional control,
accessible through the rear panel, adjusts Astigmatism. An
internal switch is used to match the regulated power supply
to conventional line voltages from 105 volts to 260 volts
AC.
Thus, this Oscilloscope combines the most desirable features
required for precise measurement and display, while its
solid-state circuitry provides excellent sensitivity, stability,
and versatility.

Heathkit IO-4550 Specifications

General

Brand	Heathkit
Model	IO-4550
Category	Test Equipment
Language	English