Section 2-2225 Service
OPERATING INSTRUCTIONS
This section is divided into four subsections. The controls. Subsection three, Operating Consider-
first subsection, Preparation for Use, provides in- ations, provides the user with some of the more
structions for the user to follow before turning the general information on measurement techniques.
instrument on, especially for the first time. Sub- The last subsection, Operators Checks and
section two; Controls, Connectors, and Indicators; Adjustments, provides simple checks and adjust-
provides details on the operation of the front-panel
ments to be made on a routine basis by the user.
PREPARATION
FOR
USE
SAFETY
This subsection tells how to prepare for and to pro-
ceed with the initial start-up of the
TEKTRONIX 2225
Oscilloscope.
Refer to the Safety Summary at the front of this
manual for power source, grounding, and other
safety considerations pertaining to the use of the in-
strument. Before connecting the oscilloscope to a
power source, read both this subsection and the
Safety Summary.
This instrument may be damaged if operated
with the LlNE VOLTAGE SELECTOR switch
(on the rear panel) set for the wrong applied
ac source voltage or if the wrong fuse is
installed.
LINE (MAINS) POWER-CORD
FUSE RECEPTACLE
REPLACING
FUSE
SELECTOR (MAINS) ATTACH POWER-
SWITCH
CORD CLAMP
6299-23
LlNE VOLTAGE SELECTION
Figure 2-1. Voltage Selector switch, fuse, and
power-cord receptacle.
The oscilloscope operates from either a 115-V or a
230-V nominal ac power line with any frequency
from
48
Hz
to
440
Hz.
Before connecting the power
cord to a power source, verify that the LlNE
VOLTAGE SELECTOR switch, located on the rear
panel, is set correctly and that the proper line fuse is
installed. Refer to Figure 2-1 and the instrument rear
panel.
To convert the 2225 for operation on another line
voltage range, set the LlNE VOLTAGE SELECTOR
switch to the required position and install the appro-
priate fuse (listed on the rear panel). The detach-
able power cord may need to be replaced to match
the particular power source. Power-cord option
numbers are given in Figure 2-1
;
fuse part numbers
are listed in Options and Accessories (Section
7).
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