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Installation; Introduction; Inspection; Power Requirements - HP 333A Technical Manual

Distortion analyzer.
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Model333A/334A

2-1. INTRODUCTION.

2-2. This section contains information and instruc-
tions necessary for the installation and shipping of the
Models 333A/334A Distortion Analyzers. Included
are initial inspection procedures, power and grounding
requirements, installation information, and instruc -
tions for repackaging for shipment.

2-3. INSPECTION.

2-4. This instrument was carefully inspected both
mechanically and electrically before shipment. It
should be physically free of mars or scratches and in
perfect electrical order upon receipt. To confirm
this, the instrument should be inspected for physical
damage in transit. Also check for supplied accessories,
and test the electrical performance of the instrument
using the procedure outlined in Paragraph 5-5.

2-5. POWER REQUIREMENTS.

2-6. The Model 333A/334A can be operated from any
ac source of 115 or 230 volts (+10%), at 50- 1000 cps.
With the instrument disconnected from the ac power
source, move the slide (located on the rear panel) un-
til the desired line voltage appears. The instrument
can be battery operated by connecting two 28-50 V
batteries (rated 80 milliamperes) to the battery ter-
minal on the rear panel. Power dissipation is 10 watts
maximum.

2-7. THREE-CONDUCTOR POWER CABLE.

2-8. To protect operating personnel, the National
Electrical Manufacturers' Association (NEMA) recom-
mends that the instrument panel and cabinet be grounded.
All Hewlett-Packard instruments are equipped with a
three -conductor power cable, which when plugged in-
to an appropriate receptacle, grounds the instrument
The offset pin on the power cable three-prong connec-
tor is the ground wire.
2-9. To preserve the protection feature when operat-
ing the instrument from a two-contact outlet, use a
three-prong to two-prong adapter and connect the
green pigtail on the adapter to ground.

2-10. INSTALLATION.

2-11 The Model 333A/334A is fully transistorized;
therefore, no special cooling is required. However,
the instrument should not be operated where the am-
bient temperature exceeds 55 C (191 F).

2-12. BENCH INSTALLATION.

2-1% The Model 333A/34A is shipped with plastic
feet and tilt stand in place, ready for use as a bench
instrument.
S E C T I O N
I I
I N S T A L L A T I O N

2-14. RACK INSTALLATION.

2-15. The Model 333A/334A may be rack mounted by
using the 5" RackMount Kit (-hp- Part No. 5060-0775).
Instructions for the conversion are included with the
The rack mount for the Model 333A/334A is an
kit.
ELA standard width of 19 inches. when mounted in a
rack using the rack mount kit, additional support at
the rear of the instrument should be provided if vibra
tion or similar stress is likely.

2-16. REPACKAGING FOR SHIPMENT.

2-17. The following paragraphs contain a general guide
for repackaging of the instrument for shipment. Refer
to Paragraph 2-18 if the original container is to be
used; 2-19 if it is not.
2-18. If original container is to be used, proceed as
follows:
a. Place instrument in original container if avail-
able.
b. Ensure that container is well sealed with strong
tape or metal bands.
2-19. If original container is not to be used, proceed
as follows:
a. Wrap instrument in heavy paper or plastic be-
fore placing in an inner container.
b. Place packing material around all sides of in-
strument and protect panel face with cardboard strips.
c. Place instrument and inner container in a heavy
carton or wooden box and seal with strong tape or
metal bands.
d. Mark shipping container with "DELICATE
INSTRUMENT," ""RAGILE," etc.
TM 11-6625-1576-15
Section II
Paragraphs 2-1 to 2-19
2-1

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