Initial Inspection; Preparation For Use; Requirements; Line Voltage Selection - HP 3455A Operating And Service Manual

SECTION Ii
INSTALLATION
2-1. INTRODUCTION.
2-2. This section contains information and instructions
necessary to install and interface the Model 3455A
Digital Voltmeter. Also included are initial inspection
procedures, power and grounding requirements, en-
vironmental information, and repackaging instructions.
2-3. INITIAL INSPECTION.
2-4, This instrument was carefully inspected both
mechanically and electrically before shipment. It should
be free of mars and scratches and in perfect electrical
order. The instrument should be inspected upon receipt
for damage that might have occurred in transit. If the
shipping container or cushioning material is damaged, it
should be kept until the contents of the shipment have
been checked for completeness and the instrument has
been mechanically and electrically checked. Procedures
for testing electrical performance of the 3455A are given
in Section IV. If the contents are incomplete, if there is
mechanical damage or defect, or if the multimeter does
not pass the Performance Tests, notify the nearest
Hewlett-Packard Office. {A list of the -hp- Sales and
Service Offices is presented at the back of the manual.)
If the shipping container is damaged, or the cushioning
material shows signs of stress, notify the carrier as well
as the Hewlett-Packard Office. Save the shipping
materials for the carrier's inspection.
2-5, PREPARATION FOR USE.
2-6. Power Requirements.
2-7. The Model 3455A requires a power source of 100,
120, 220, or 240 V ac (+5% - 10%), 48 Hz to 400 Hz
single phase. Maximum power consumption is 60 VA.
2-8. Line Voltage Selection.
2-9. Before connecting ac power to the 3455A, make
sure the rear panel line selector switches are set to cor-
respond to the voltage of the available power line as
shown in Figure 2-1. Also, be sure the proper fuse is in-
stalled. The multimeter is shipped with the line voltage
and fuse selected for 120 V ac operation.
Be sure the 50 — 60 Hz rear panel switch is
set for the proper line frequency for your
location.
240v: 2aov.
220V 220¥"
100v : ov:
1207 120:
2eovoite 220 Volts
2e0 2a0y
a i 220
r00V. Q
vaee St.
120 Vets 100 Vous
/
NOMINAL OPERATING RANGE
VOLTAGE - 10%, + 5% of nominal FUSE
100 volts 90 to 105 volts 0.5 A
120 volts 108 to 126 volts O5 A
220 volts 19B to 231 volts O.25A
240 volts 216 to 252 volts 0.25A
Figure 2-1. Line Voitage Selection.
2-10. Power Cable.
2-11. Figure 2-2 illustrates the standard configurations
used for -hp- power cables. The -hp- part number
directly below each drawing is the part number for a
power cable equipped with a connector of that con-
figuration. If the appropriate power cable is not in-
cluded with the instrument, notify the nearest -hp- Sales
and Service Office and the proper cable will be pro-
vided.
2-12. Grounding Requirements.
2-13. To protect operating personnel, the National
Electrical Manufacturer's Association (NEMA) recom-
mends that the instrument panel and cabinet be
grounded. The Model 3455A is equipped with a three
conductor power cable which, when plugged into an ap-
propriate receptacle, grounds the instrument.
2-14. Bench Use.
2-15. The Model 3455A is shipped with plastic feet and
tilt stands installed and is ready for use as a bench in-
strument. The plastic feet are shaped to permit ''stack-
ing'' with other full-module Hewlett-Packard in-
struments. The tilt stands permit the operator to elevate
the front panel for operating and viewing convenience.
2-16. Rack Mounting.
2-17. The Model 3455A may be rack mounted by add-
ing rack mounting kit Option 908 or Option 909. Option
908 contains the basic hardware and instructions for
2-1