Installation; Introduction; Initial Inspection; Power Requirements - HP 3320A Operating And Service Manual

Model 3320A/B
2-1. INTROOUCTION.
Section II
SECTION II
INSTAllATION
grounds the instrument. The offset pin on the power cable
is the ground wire.
2-2. This section contains information and instructions
necessary for the installation and shipping of the Model
3320A/B Frequency Synthesizer. [neluded are initial
inspection procedures, power and grounding requiremen ts,
environmental information, power cord information, inter-
facing and instructions for repackaging for shipment.
2-3. INITIAL INSPECTION.
2-4. This instrument was carefully inspected both mechani-
cally and electrically before shipment. It should be free of
mars or scratches and in perfect electrical order upon
receipt. To confum this, the instrument should be inspec-
ted for physical damage in transit. and the electrical
performance should be tested using the procedure outlined
in Paragraph 5-7. [f there is damage or deficiency, see the
warranty inside the front cover of this manual.
2-5. POWER REQUIREMENTS.
2-6. The 3320 can be operated from any source of 115 V
±
10% at 48 to 66 Hz. The power receptacle on the rear
panel contains the switch for selecting 115 V or 230 V
operation and the input power fuse. The instrument leaves
the manufacturer with the 115 V/230 V switch in the
115 V position. It is necessary to set the switch in the
230 V position when operating from a 230 V source. Use
the following procedure and Figure 2-1 for setting the
115 V/230 V switch:
a. Disconnect power cord and slide the cover to the left
to gain access to the fuse compartment (Figure 2-1a).
b. Remove the Line Fuse by pulling outward on the
Fuse Puller (Figure 2-1 b).
c. With the Fuse Puller positioned as shown (Figure
2-1c), set the 115 V/230 V Selector Switch to the position
that corresponds with the line voltage to be used.
d. Replace the Line Fuse using a 3 A, 250 V for 115 V
operation or a 1.5 A, 250 V for 230 V operation.
2·7.
GROUNDING REllUIREMENTS.
2-8. To protect operating personnel, the National Electrical
Manufacturer's Association (NEMA) recommends that the
instrument panel and cabinet be grounded. The Model
3320A/B is equipped with a three-<:onductor power cable
which, when plugged into an appropriate receptacle,
2-9. To preserve the protection feature when operating the
instrument from
a
two-contact outlet, use
a
three-prong to
two-prong adapter and connect the pigtail on the adapter to
power line ground.
2·1a.
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2-1b.
2-10.
1. POWER CORO RECEPTACLE
2. FUSE COMPARTMENT COVER
3. 115 V/230 V SELECTOR SWITCH
4. FUSE PULLER
5. LINE FUSE
Figure 2·1. Power Module.
2-1