Table of Contents
Advertisement
Section 1—214 Service
INTRODUCTION
GENERAL
INFORMATION
The Tektronix
214
Storage Oscilloscope is a solid-state
portable
instrument
that
combines
small
size
and
light
weight
with
the
ability
to
make
precision
waveform
measurements.
It is designed
for general-purpose
applica-
tions where
display
storage
is desired, along with conven-
tional
(NONSTORE)
operation.
The
instrument
is
mechanically constructed to withstand the shock, vibration,
and other extremes associated with portability.
The
dual-channel
DC-to-500
kilohertz
vertical
system
provides vertical deflection factors from one millivolt (at a
reduced
bandwidth)
to 50 volts/division at the tip of either
of the integral high-impedance
probes. The 214 will either
automatically chop or alternate, depending upon the sweep
rate. Single-trace operation is achieved by turning off either
channel with its position control. Single Sweep operation is
provided
to
display
infrequently
recurring
events.
The
trigger circuit provides stable triggering over the full range
of vertical frequency response.
The
horizontal
deflection
system
provides
calibrated
sweep
rates
from
500
milliseconds to five microseconds/
division.
Uncalibrated
sweep
rates,
via
a variable
sweep
magnifier, are available to at least five times the indicated
sweep
rate
for
a maximum
of at least one
microsecond/
division. Stored
Automatic
Enhance
occurs
(in the Single
Sweep
mode)
at sweep rates of 0.1 millisecond/division and
faster.
X-Y operation
is provided with Channel
1 supplying the
horizontal deflection of the applied (X) signal, with a range
from
less
than
one
millivolt
to
50
volts/division
(at a
reduced bandwidth
of 50 kilohertz). Channel 2 supplies the
vertical deflection of the applied (Y) signal.
The
cathode-ray
tube
(CRT)
is a direct-view
bistable
Storage
tube
having
a
6
X
10
division
graticule
(each
division equals 0.203 inch).
The 214 is operated either from AC line voltage or from
internal
rechargeable
batteries.
The
internal
batteries are
recharged
from
the AC
power
line by the integral battery
charger (with the instrument OFF).
®
This instrument will meet the following electrical charac-
teristics after complete
instrument calibration. These char-
acteristics
apply
over
an
ambient
temperature
range
of
—15°C to +55°C (+5°F to +131°F) when operating from
the internal batteries, and 0°C to +40°C (+32°F to +104°F)
when operating from an AC line source, except as otherwise
indicated. Warmup time for given accuracies is five minutes.
SPECIFICATIONS
Vertical Deflection System
DEFLECTION
FACTOR:
Calibrated
Range: One millivolt to 50 volts/division.
15
steps in a 1-2-5 sequence.
Accuracy: Within 5% with VAR VOLTS/DIV control in
CAL
position
and
gain
correctly
set
at
five
millivolts/
division.
Uncalibrated
(variable)
Range:
Continuously
variable
between
calibrated
settings.
Extends
maximum
deflection
factor to at least 125 volts/division.
BANDWIDTH
(using six-division reference):
10 mV/DIV
to 50 V/DIV:
DC to at least 500 kilohertz.
5 mV/DIV: DC to at least 400 kilohertz.
2 mV/DIV: DC to at least 200 kilohertz.
1 mV/DIV: DC to at least 100 kilohertz.
Lower
Bandwidth
Limit,
AC
(capacitively)
Coupled:
About two hertz at all deflection factors.
INPUT RESISTANCE:
One megohm, within 5%.
INPUT CAPACITANCE:
1
mV/DIV
to 50
mV/DIV:
Approximately
160
pico-
farads.
100
mV/DIV
to 50 V/DIV:
Approximately
140
pico-
farads.
1-1
Advertisement
Table of Contents
