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Model
1740A
Installation
SECTION II
INSTALLATION
2-1.
INTRODUCTION.
2-2.
This section contains information
and instruc-
tions
necessary
for installing
and
interfacing
the
Model 1740A Oscilloscope. Included are initial inspec-
tion procedures,
power
and grounding
requirements,
installation
instructions,
and
procedures
for
re-
packaging the instrument for shipment.
2-3.
INITIAL INSPECTION.
2-4,
This
instrument
was
carefully
inspected
both
mechanically
and
electrically
before
shipment.
It
should be free of mars or scratches and in perfect elec-
trical order upon receipt. To confirm this, the instru-
ment
should
be inspected
for physical
damage
in-
curred in transit. If the instrument was damaged in
transit, file a claim with the carrier. Check for supplied
accessories (listed in Section I) and test the electrical
performance of the instrument using the performance
test procedures outlined in Section V. If there is dam-
age or deficiency, see the warranty in the front of this
manual.
Read
the Safety Summary
at the front
of
the
manual
before
installing
or
operating the instrument.
2-5.
POWER CORDS AND RECEPTACLES.
2-6.
Figure 2-1 illustrates the standard configuration
used for HP power cords. The HP part number directly
above each drawing is the part number for an instru-
ment power cord equipped with a connector of that
configuration.
If the appropriate
power
cord is not
included
with the instrument,
notify the nearest HP
—
Sales
and
Service
Office
and
a replacement
cord
will be provided.
STD-002-07-76
HP POWER
CABLE
PART NUMBERS
8120-1692
8120-0696
8120-1703
8120-1521
Option 902)
Option 901 | Option 900 | Option 903
INPUT POWER RECEPTACLE TYPES
Figure 2-1. Types of Power Source Receptacles and
Applicable Input Power Cable Part Numbers
2-7.
POWER REQUIREMENTS.
2-8.
The
1740A
can
be
operated
from
any
power
source
supplying
100 V, 120 V, 220 V, or 240 V
(+10%), single phase, 48 to 440 Hz. Power dissipation
is 100 VA maximum.
CAUTION
Instrument
damage
may
result
if line-
voltage
selection
switch
is not correctly
set for the input power source.
2-9.
The instrument is normally set at the factory for
120-volt operation. To operate the instrument from any
other ac power source, proceed as follows:
a.
Verify that Model
1740A power cable is not
connected to any input power source.
b.
Stand instrument on rear legs. Use a blade-
type
screwdriver
to position
line-voltage
selection
switch through opening in bottom cover. (Figure 2-2
shows switches set for 120-V operation.)
c.
For 220-V or 240-V inputs, replace fuse F1 with
0.5 A slow-blow fuse supplied with instrument.
d.
Connect input power cable to power source.
1740A-200-07-76
Figure 2-2. Line Voltage Selection Switch Settings
2-10.
REPACKING FOR SHIPMENT.
2-11.
If the instrument is to be shipped to a Hewlett-
Packard
Sales/Service
Office
for service
or repair,
attach a tag showing owner (with address), complete
instrument
serial number,
and a description of the
service required.
2-12.
Use the original shipping carton and packing
material.
If the
original
packing
material
is not
available,
the
Hewlett-Packard
Sales/Service
Office
will
provide
information
and
recommendations
on
materials to be used.
2-1
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