HP 4145A Operating And Service Manual
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Brand: HP
Category: Measuring Instruments , Multimeter
Type: Operating and service manual for HP 4145A
Pages: 269
SECTION II
Model 4145A
2-12. POWER CABLE
2-13. To protect operating personnel,
the
National Electrical Manufacturer’s Association
(NEMA) recommends that the instrument panel
and cabinet be grounded. The Model 4145A 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 is the ground wire.
assistance is needed for selecting the correct
power cable, contact the nearest Hewlett-
Packard off ice.
2-16. OPERATING ENVIRONMENT
2-17. Temperature.
The instrument may be
operated in temperatures from +lO°C to +40 OC.
2-14.
To preserve the protection feature when
operating
the instrument from a two Contact
outlet, use a three prong to two prong adapter
(HP Part No.
1251-8196) and connect the
grounding tab on
the adapter to power line
ground.
CAUTION
2-l 8. Humidity. The
instrument may be
operated in environments with relative
humidities to ‘7 0% at 40 O C.
However, the
instrument should be protected from
temperature extremes which cause condensation
within the instrument.
THE MAINS PLUG MUST ONLY BE
INSERTED IN A SOCKET OUTLET
PROVIDED WITH A PROTECTIVE
EARTH CONTACT. THE
PRO-
TECTIVE ACTION MUST NOT BE
NEGATED BY THE USE OF AN
EXTENSION
CORD (POWER CABLE)
WITHOUT PROTECTIVE CONDUC-
TOR
(GROUNDING).
2-19.
INSTALLATION INSTRUCTIONS
2-20. The HP Model 4145A can be operated on
the bench or in a rack mount. The 4145A is
ready for bench operation as shipped from the
factory.
For bench operation a two-leg
instrument stand is used. For use, the instrument
stands are designed to be pulled towards the
front of instrument.
2-21. Installation of Options 907, 908 and 909.
2-15. Figure 2-2 shows the available power
cords, which may be used in various countries
including the standard power cord furnished with
the instrument. HP Part number, applicable
standards for power plug, power cord color,
electrical characteristics and countries using
each power cord are listed in the figure. If
2-22. The 4145A can be installed in a rack and
be operated as a component of a measurement
system.
Rack mounting information for the
4145A is presented in Figure 2-3.
IOOV OPERATION 12OV OPERATION
220V OPERATION
240V OPERATION
22ov-
ir
12ov* 22ove 12ov- 22ow 12ov-
240vwi r Ioovw
240V N
IOOV-
240vwl TOOV-
ir
cll
Fuse : 2.5A 250V 2,
(HP P/N: 2110-0015)
Fuse :
1.25A 250V CL
(HP P/N : 2110-0305)
Figure 2-l. Voltage and Fuse Selection.