HP 740B Operating And Service Manual page 10

Model 740B
SECTION II
INSTALLATION
Section II
2-1.
INTRODUCTION.
2 -2. This section contains information on preparing
the Model 740B for use and repackaging the instrument
for shipment.
2-3. INITIAL 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 that occurred in transit. If the instrument
was damaged in transit, file a claim with the carrier.
Check for supplied accessories, and test the electrical
performance of the instrument using the procedure
outlined in Paragraph 5-5. If there is damage or de-
ficiency, see the warranty on the inside front cover
of this manual.
2-5.
POWER REQUIREMENTS.
2 -6. The Model 740B can be operated from any source
of 115 or 230 volts (± 10%), at 50 to 1000 Hz. With
the instrument disconnected from the ac power source,
move the slide switch (located on the rear panel) until
the desired line voltage appears. Power dissipation
is 125 watts maximum.
2-7.
GROUNDING REQUIREMENTS.
2-8. To protect operating personnel, the National
Electrical Manufacturers' Association (NEMA) re-
commends that the instrument panel and cabinet be
grounded. This instrument is equipped with a three-
conductor power cable which, when plugged into an
appropriate receptacle, grounds the instrument. The
offset pin on the power cable three -prong connector is
the ground wire.
2 -9. To preserve the protection feature when operating
the instrumentfrom a two-contact outlet, use a three-
prong to two-prong adapter and connect the green pig-
tail on the adapter to ground.
2-14. RACK MOUNTING.
2-15. The Model 740B may be rack mounted by using
the 7" Rack Mount Kit (-hp- Part No. 5060-0776).
Instructions for the conversion are included with the
kit. The rack mount for the Model 740B is an EIA
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 vibration 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. If youhave any questions, con-
tact your local -hp- Sales and Service Office. (See
Appendix B for office locations.)
- - - - - NOTE - - - - - -
If the instrument is to be shipped
to ,Hewlett-Packard for service or
repair, attach a tag to the instru-
ment identifying the owner and in-
dicating the service or repair to be
accomplished; include the model
number and full serial number of
the instrument. In any corres-
pondence, identify the instrument
by model number and serial number.
2 -18.
If
original container is to be used, proceed as
follows:
a. Place instrument in original container with
appropriate packing material. If original
container is not available, one can be pur-
chased from your nearest -hp- Sales and
Service Office.
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:
2 -1 O. INSTALLATION.
a. Wrap instrument in heavy paper or plastic
before placing in an inner container.
2-11. The Model 740B is fully transistorized; there-
fore, no special cooling is required. However, the
instrument should not be operated where the ambient
temperature exceeds + 40
0
C (104
0
F) or the relative
humidity exceeds 70%.
2-12. BENCH MOUNTING.
2-13. The Model 740B is shipped with plastic feet and
tilt stand in place, ready for use as a bench instrument.
01794-1
b. Place packing material around all sides of
instrument and protect panel face with card-
board 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," "FRAGILE," etc.
2-1