Intended Operation; Ambient Conditions; Cooling; Warranty And Repair - R&S HM8143 Benutzerhandbuch

uct may have to be changed accordingly.
1.6

Intended Operation

The measuring instrument is intended only for use by
personnel familiar with the potential risks of measuring
electrical quantities. For safety reasons, the measuring
instrument may only be connected to properly installed
safety socket outlets. Separating the grounds is prohibited.
The power plug must be inserted before signal circuits
may be connected.
Use the measuring instrument only with original measuring
equipment, measuring cables and power cord. Never use inade-
quately measured power cords. Before each measurement, mea-
suring cables must be inspected for damage and replaced if nec-
essary. Damaged or worn components can damage the instru-
ment or cause injury.
The product may be operated only under the operating
conditions and in the positions specified by the
manufacturer, without the product's ventilation being
obstructed. If the manufacturer's specifications are not
observed, this can result in electric shock, fire and/or
serious personal injury, and in some cases, death.
Applicable local or national safety regulations and rules for
the prevention of accidents must be observed in all work
performed. The measuring instrument is designed for use
in the following sectors: Industry, residential, business and
commercial areas and small businesses. The measuring
instrument is designed for indoor use only. Before each
measurement, you need to verify at a known source if the
measuring instrument functions properly.
To disconnect from the mains, the low-heat device socket on the
back panel has to be unplugged.
1.7

Ambient Conditions

Permissible operating temperatures during the operations
range from +5 °C to +40 °C. During storage or transporta-
tion the temperature may be between –20 °C and +70 °C.
In case of condensation during transportation or storage ,
the instrument will require approximately two hours to dry
and reach the appropriate temperature. It can then be op-
erated. The measuring instrument is designed for use in
a clean and dry indoor environment. Do not operate with
high dust and humidity levels, if danger of explosion ex-
ists or with aggressive chemical agents. Any operating po-
sition may be used; however adequate air circulation must
be maintained. For continuous operation, a horizontal or
inclined position (integrated stand) is preferable.
The maximum operating altitude for the instrument is 2000
m. Nominal data with tolerance details apply once the am-
bient temperature of 23 °C has been reached after about
30 minutes. Values without tolerance details are reference
values of an average instrument.
Do not obstruct the ventilation holes!
1.8

Cooling

The heat produced inside the power supply is guided to
the exterior via temperature-controlled fan. This fan, com-
bined with a cooling element, is located in a "cooling
duct" which is positioned across the instrument. The air
is drawn at the left side and exhausted at the right side of
the instrument. This helps minimize the dust exposure to
the instrument as much as possible. However, it is neces-
sary to ensure that there is sufficient space on both instru-
ment sides for the heat exchange. If the temperature inside
the instrument still increases to more than 80°C, a chan-
nel-specific overheat protection intervenes. Affected out-
puts will automatically be switched off.
1.9

Warranty and Repair

ROHDE & SCHWARZ instruments are subject to strict qual-
ity controls. Prior to leaving the manufacturing site, each in-
strument undergoes a 10-hour burn-in test. This is followed
by extensive functional quality testing to examine all oper-
ating modes and to guarantee compliance with the spec-
ified technical data. The testing is performed with testing
equipment that is calibrated to national standards. The stat-
utory warranty provisions shall be governed by the laws of
the country in which the ¸ product was purchased. In
case of any complaints, please contact your supplier.
The product may only be opened by authorized and
qualified personnel. Prior to working on the product or
before the product is opened, it must be disconnected
from the AC supply network. Otherwise, personnel will
be exposed to the risk of an electric shock.
Any adjustments, replacements of parts, maintenance
and repair may be carried out only by authorized ROHDE
& SCHWARZ technical personnel. Only original parts may
be used for replacing parts relevant to safety (e.g. power
switches, power transformers, fuses). A safety test must al-
ways be performed after parts relevant to safety have been
replaced (visual inspection, PE conductor test, insulation
resistance measurement, leakage current measurement,
functional test). This helps ensure the continued safety of
the product.

1.10 Maintenance

Clean the outer case of the measuring instrument at regular in-
tervals, using a soft, lint-free dust cloth.
The display may only be cleaned with water or an ap-
propriate glass cleaner (not with alcohol or other clean-
ing agents). Follow this step by rubbing the display down
with a dry, clean and lint-free cloth. Do not allow clean-
ing fluid to enter the instrument. The use of other cleaning
Before cleaning please make sure the instrument is switched off
and disconnected from all power supplies.
No part of the instrument should be cleaned by the use of
cleaning agents (as f.e. alcohol) as they may adversely affect the
labeling, the plastic or lacquered surfaces.
Important hints
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