Hameg HM 1004-3 Series, Manual

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7
Subject to change without notice
holes may not be covered. For continuous operation the
instrument should be used in the horizontal position, prefer-
ably 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 regard-
ing the electromagnetic compatibility. The applied standards
are: Generic immunity standard EN50082-2:1995 (for indus-
trial environment) Generic emission standard EN50081-1:1992
( for residential, commercial und light industry environment).
This means that the instrument has been tested to the
highest standards.
Please note that under the influence of strong electro-
magnetic 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
on which the technical data are based. Purchase of the
HAMEG scope tester HZ 60 , 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 aluminium
parts, can be removed with a moistened cloth (99% water
+1% mild detergent). Spirit or washing benzine (petroleum
ether) can be used to remove greasy dirt. The screen may be
cleaned with water or washing benzine (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 over voltage 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 instrument operates on mains/line voltages between
100V
AC
and 240V
AC
. No means of switching to different input
voltages has therefore been provided.
The power input fuse is externally accessible. The fuse holder
and the 3 pole power connector is an integrated unit. The
power input fuse can be exchanged after the rubber connector
is removed. The fuse holder can be released by lever action
with the aid of a screwdriver. The starting point is a slot located
on contact pin side. The fuse can then be pushed out of the
mounting and replaced.
The fuse holder must be pushed in against the spring pressure
and locked. Use of patched fuses or short circuiting of the fuse
holder is not permissible; HAMEG
HAMEG
HAMEG HAMEG 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.
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).
The operator must not replace this fuse!
General Information