Hameg HM404-2.02, Руководство пользователя

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Subject to change without notice
on which the technical data are based. Purchase of the
HAMEG scope tester HZ60 , which despite its low price is
highly suitable for tasks of this type, is very much
recommended. The exterior of the oscilloscope should be
cleaned regularly with a dusting brush. Dirt which is difficult
to remove on the casing and handle, the plastic and aluminum
parts, can be removed with a moistened cloth (99% water
+1% mild detergent). Spirit or washing benzene (petroleum
ether) can be used to remove greasy dirt. The screen may be
cleaned with water or washing benzene (but not with spirit
(alcohol) or solvents), it must then be wiped with a dry clean
lint-free cloth. Under no circumstances may the cleaning fluid
get into the instrument. The use of other cleaning agents can
attack the plastic and paint surfaces.
Protective Switch-Off
This instrument is equipped with a switch mode power
supply. It has both overvoltage and overload protection,
which will cause the switch mode supply to limit power
consumption to a minimum. In this case a ticking noise may
be heard.
Power supply
The oscilloscope operates on mains/line voltages between
100VAC and 240VAC. No means of switching to different
input voltages has therefore been provided.
The power input fuses are externally accessible. The fuseholder
is located above the 3-pole power connector. The power input
fuses are externally accessible, if the rubber connector is
removed. The fuseholder can be released by pressing its
plastic retainers with the aid of a small screwdriver. The
retainers are located on the right and left side of the holder and
must be pressed towards the center. The fuse(s) can then be
replaced and pressed in until locked on both sides.
Use of patched fuses or short-circuiting of the fuseholder is
not permissible;
HAMEG assumes no liability whatsoever for
any damage caused as a result, and all warranty claims
become null and void.
Fuse type:
Size 5x20mm; 0.8A, 250V AC fuse;
must meet IEC specification 127,
Sheet III (or DIN 41 662
or DIN 41 571, sheet 3).
Time characteristic: time-lag (T).
Attention!
There is a fuse located inside the instrument within the
switch mode power supply:
Size 5x20mm; 0.8A, 250V AC fuse;
must meet IEC specification 127,
Sheet III (or DIN 41 662
or DIN 41 571, sheet 3).
Time characteristic: fast (F).
This fuse must not be replaced by the operator!
General Information
before the instrument is put into operation. The instrument
should be kept in a clean and dry room and must not be
operated in explosive, corrosive, dusty, or moist environments.
The oscilloscope can be operated in any position, but the
convection cooling must not be impaired. The ventilation
holes may not be covered. For continuous operation the
instrument should be used in the horizontal position, preferably
tilted upwards, resting on the tilt handle.
The specifications stating tolerances are only valid if
the instrument has warmed up for 30minutes at an
ambient temperature b15°C (+59°F) and +30°C
(+86°F). Values without tolerances are typical for an
average instrument.
EMC
This instrument conforms to the European standards regarding
the electromagnetic compatibility. The applied standards are:
Generic immunity standard EN50082-2:1995 (for industrial
environment) Generic emission standard EN50081-1:1992 (
for residential, commercial and light industry environment).
This means that the instrument has been tested to the
highest standards.
Please note that under the influence of strong electromagnetic
fields, such signals may be superimposed on the measured
signals.
Under certain conditions this is unavoidable due to the
instrument’s high input sensitivity, high input impedance and
bandwidth. Shielded measuring cables, shielding and earthing
of the device under test may reduce or eliminate those
effects.
Warranty
HAMEG warrants to its Customers that the products it
manufactures and sells will be free from defects in materials
and workmanship for a period of 2 years. This warranty shall
not apply to any defect, failure or damage caused by improper
use or inadequate maintenance and care.
HAMEG shall not be
obliged to provide service under this warranty to repair
damage resulting from attempts by personnel other than
HAMEG representatives to install, repair, service or modify
these products.
In order to obtain service under this warranty, Customers
must contact and notify the distributor who has sold the
product. Each instrument is subjected to a quality test with 10
hour burn-in before leaving the production. Practically all early
failures are detected by this method. In the case of shipments
by post, rail or carrier the original packing must be used.
Transport damages and damage due to gross negligence are
not covered by the guarantee.
In the case of a complaint, a label should be attached to the
housing of the instrument which describes briefly the faults
observed. If at the same time the name and telephone
number (dialing code and telephone or direct number or
department designation) is stated for possible queries, this
helps towards speeding up the processing of guarantee
claims.
Maintenance
Various important properties of the oscilloscope should be
carefully checked at certain intervals. Only in this way is it
largely certain that all signals are displayed with the accuracy