Section
1-2225
Service
SPECIFICATION
INTRODUCTION
ACCESSORIES
The instrument is shipped with the following accesso-
ries: operators manual, two probe kits, a power cord,
The
TEKTRoNIX
2225
oscillosco~e
is
a
light-
and a power-cord clamp. The probes supplied with the
weight, dual-channel, 50 MHz instrument that features a
2225
have
sturdy
replaceable
tips.
Probe
compensation
bright*
defined
trace
On
an
80
100-mm
is
accomplished through a closeable window on the
de-ray tube (crt).
probe body. Part numbers for the standard accessories
and for the suggested optional accessories are located
in Section
7,
Options and Accessories.
The low-noisevertical system of the 2225 has calibrated
deflection factors from
5
mV to 5 V per division at full
bandwidth. A vertical
ma~nification feature extends the
FOR MORE INFORMATION
vertical sensitivity to 506 FV per division. This same
Should
you
need
additional
infonation
about
your
2225
magnification
feature
permits independent
bandwidth
Oscilloscope or about other TeMronix products, contact
limiting for each channel. With it, a user can limit the
the
nearest
Tektronix
Sales
Office
or
Distributor
or
con-
bandwid'h of one channel
'0
5 MHzwi'hout affecting the
suit
the TeMronix product catalog.
in
fie
United States
bandwidth of the other channel.
you may call the Tektronix National Marketing Center toll
free at 1-800-426-2200.
Stable triggering is achieved over the full bandwidth of
the vertical system. The very flexible trigger system of
the
2225 features hands-free triggering with the peak-
to-peak automatic mode, independent selection of
TV
Line andTV Field triggering at any sweep speed, single-
sweep triggering, and a variable
holdoff control to facili-
tate triggering on complex waveforms. Along with the
standard AC and DC signal coupling methods, the
2225
provides HF REJ and LF REJ trigger coupling. These
added coupling features give the user the ability to filter
out the high-frequency or low-frequency components of
a trigger signal that can interfere with stable triggering.
An external trigger signal may be supplied to the trigger
system via a front-panel connector. That front-panel
connector may also be used to supply an external Z-axis
signal for intensity modulation of the displayed signals.
RECOMMENDED RECALIBRATION
SCHEDULE
To ensure accurate measurements, check the perform-
ance of this instrument every 2000 hours of operation, or,
if used infrequently, once each year. Replacement of
components in the instrument may also necessitate
readjustment of the affected circuits.
PERFORMANCE CONDITIONS
The electrical characteristics given in Table 1-1 are valid
when the instrument has been adjusted at an ambient
temperature between
+20°C and +30°C, has had a
warm-up period of at least 20 minutes, and is operating
at an ambient temperature between
O°C and +40°C
(unless otherwise noted).
The
horizontal
'ystem provides
calibrated
sweep
Items listed in the Performance Requirements column
'peeds
from
0'5
to
50
ns
per
division'
For
greater mea-
a, verifiable qualitative or quantitative limits that define
surement accuracy, a horizontal magnifier circuit ex-
tends the maximum sweep speed to 5 ns per division.
the measurement capabilities of the instrument.
Magnification
is selected in three levels-X5, XlO, and
Environmental characteristics are given in Table 1-2.
X50-and the magnified trace can be displayed either
This instrument meets the requirements of
MIL-
alone or together with its associated unmagnified trace. ~-28800~, paragraphs 4.5.5.1.3, 4.5.5.1 -4, and
Displaying both the magnified and unmagnified traces 4.5.5.1.2.2 for Type Ill, Class 5 equipment, except where
together
-
called Alternate
Magnification mode- lets
noted otherwise.
the user perform types of timing measurements that pre-
viously were only possible on oscilloscopes having dual Physical characteristics of the instrument are listed in
time bases. Table 1-3.
RN
APR
1990
Scam
by
ARTEK
MEDIA
==-
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