Tektronix 323, Instruction Manual

Page: 5 / 170

Type 323
SECTION
I
TYPE 3 2 3 SPECIFICATION
Change information, if any, affecting this section will be found at the
rear of the manual.
Introduction
The Sony/Tektronix Type 323 Oscilloscope is a solid-state
portable instrument that combines small size and light weight
with the ability to make precision waveform measurements.
The instrument is mechanically constructed to withstand the
shock, vibration and other extremes of environment associ­
ated with portability. A DC to four megahertz vertical sys­
tem provides calibrated deflection factors from 0.01 to 20
volts/division (0.001 volt/division minimum with reduced
frequency response). The trigger circuits provide stable trig­
gering over the full vertical bandwidth. The horizontal de­
flection system provides calibrated sweep rates from one
second to five microsceonds/division. A X 10 horizontal
magnifier allows each sweep rate to be increased 10 times
to provide a maximum sweep rate of 0.5 microseconds/
division in the 5 jxs position. X-Y measurements can be
made by applying the vertical (Y) signal to the VERT INPUT
connector and the horizontal (X) signal to the EXT TRIG
OR HORIZ INPUT connector (TIME/DIV switch set to EXT
HORIZ, Trig/Horiz Coupling switch set to EXT TRIG OR
HORIZ).
The Type 323 can be operated from any one of three
power sources; AC line, external DC or internal recharge­
able batteries. A power regulator circuit assures that in­
strument performance is not affected by variations in in­
ternal battery charge level, applied DC voltage or AC line
voltage and frequency. Maximum total power consumption
is 4.5 watts for external DC or internal battery operation
and 14 watts maximum when operated from an AC line.
Operation from an AC line also provides full or trickle
charging for the internal batteries.
The electrical characteristics which follow are divided
into two categories. The instrument is checked in the Per­
formance Requirement and Calibration sections of this manu­
al against the characteristics listed in the Performance Re­
quirement column. However, the items listed in the Opera­
tional Information column either provide further information
concerning a Performance Requirement or explain an oper­
ating feature which is not checked in this manual. The Per­
formance Check procedure given in Section 5 of this manual
provides a convenient method of checking the items listed
in the Performance Requirement column. The following
electrical characteristics apply over a calibration interval
of 500 hours at .an ambient temperature range of —15° C
to + 5 5 ° C, except as otherwise indicated. Warm-up time
for given accuracy is 10 seconds.
ELECTRICAL CHARACTERISTICS
VERTICAL DEFLECTION SYSTEM
Characteristic Performance Requirement
O perational Information
Deflection Factor
Calibrated range
X I gain 0.01 to 20 volts/division in 11 steps.
Steps in 1-2-5 sequence.
X 10 gain
0.001 to 2 volts/division in 11 steps.
Accuracy Within 3% of indicated deflection with
VERT X I GAIN and VERT X 10 GAIN
correctly adjusted.
VARIABLE VOLTS/DIV control set to CAL.
Uncalibrated (variable) range Provides continuously variable deflection
factors between the calibrated steps. Ex­
tends maximum uncalibrated deflection fac­
tor to at least 50 volts/division.
Low-Frequency Linearity 0.1 division, or less, compression or expan­
sion of a center-screen two-division signal
when positioned two divisions to the verti­
cal extremes of the graticule area.
Measured with one-kilohertz or less square
wave.
®
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