2-1
Figure 2-1. LINE VOLTAGESELECTOR,line fuse, and power
cord receptacle.
4918·02
FO R LAB OR ATOR Y U S E
B Y C ERTIF I ED ~
PERSO NNE l.
\t,C. ®
T O RE M OV E PO W ER
C ORD . D IS CO NN EC T
PL UG A ND R O T ATE
RETA INER C LIP 90
0.
•
.
(@)
LINE VOLTAGE
SELECTOR
[I]I!]
NOTE
A 4 A, 250 V, 5 X 20 mm Time-lag (T) fuse may be
substituted for the factory-installed fuse. However,
the two types of fuses are NOT directly interchange-
able; each requires a different type of fuse cap.
4. Install the proper fuse and reinstall the fuse-holder
cap.
3. Verify proper fuse value (see Table 2-1).
2. Pull the cap (with the attached fuse inside) out of
the fuse holder.
1. Press in the fuse-holder cap and release it with a
slight counterclockwise rotation.
To verify the proper value of the instrument's power-
input fuse, perform the following procedure:
LINE FUSE
The 2430 operates from either a 115 V or 230 V nomi-
nal ac power-input source having a 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 outlet.
LINE VOLTAGE SELECTION
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.
Refer to the Operators and Servicing Safety Summaries
at the front of this manual for power source, grounding,
and other safety considerations pertaining to the use of
the instrument. Before connecting the oscilloscope to a
power source, read both this section and the Safety
Summaries.
This section tells how to prepare for and to proceed
with the initial start-up of the TEKTRONIX 2430 Digital
Oscilloscope.
SAFETY
PREPARATION FOR USE
Section 2-2430 Service
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