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Section 2—2465 Operators
PREPARATION FOR USE
SAFETY
This section tells how to prepare for and to proceed
with
the
initial
start-up
of the TEKTRONIX
2465
Oscilloscope.
Refer to the Safety Summaryat the front of this manual
for power source, grounding, and other safety consider-
ations pertaining to the use of the instrument. Before con-
necting the oscilloscope to a power source, read entirely
both this section and the Safety Summary.
This instrument may be damaged if operated with
the LINE VOLTAGE SELECTOR switch set for the
wrong applied ac input-source voltage or if the
wrong line fuse is installed.
LINE VOLTAGE SELECTION
The 2465 operates from either a 115-V or a 230-V
nominal
ac power-input source having line frequency
ranging from 48 Hz to 440 Hz. Before connecting the
power cord to a power-input source, verify that the LINE
VOLTAGE SELECTOR switch, located on the rear panel
(see Figure 2-1), is set for the correct nominal ac input-
source voltage. To convert the instrument for operation
from one line-voltage range to the other, move the LINE
VOLTAGE SELECTOR switch to the correct nominal
ac source-voltage setting (see Table 2-1). The detachable
power cord may have to be changed to match the particular
power-source output.
LINE FUSE
To verify that the instrument power-input fuse is of
proper value for the nominal ac source voltage selected,
perform the following procedure:
1. Press in the fuse-holder cap and release it with a
slight counterclockwise rotation.
2. Pull the cap (with the attached fuse inside) out of
the fuse holder.
3. Verify proper fuse value (see Table 2-1).
4. Install the proper fuse and reinstall the fuse-holder
cap.
NOTE
The two types of fuses listed are not directly inter-
changeable; they require different types of fuse caps.
POWER CORD
This instrument has a detachable, three-wire power cord
with a three-contact plug for connection to both the power
source and protective ground. The power cord is secured to
the rear panel by a cord-set-securing clamp. The protective-
ground contact on the plug connects (through the power-
cord protective grounding conductor) to the accessible
metal parts of the instrument. For electrical-shock pro-
tection, insert this plug into a power-source outlet that has
a properly grounded protective-ground contact.
Instruments are shipped with the required power cord
as ordered by the customer. Available power-cord informa-
tion is presented in Table 2-1, and part numbersare listed
in "Options and Accessories' (Section 7). Contact your
Tektronix representative or local Tektronix Field Office
for additional power-cord information.
INSTRUMENT COOLING
To prevent instrument damage from overheated com-
ponents, adequate internal airflow must be maintained at
all times. Before turning on the power, first verify that both
the air-intake holes on the bottom of the cabinet and the
fan-exhaust holes in the rear panel are free of any obstruc-
tion to airflow.
2-1
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