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7
Subject to change without notice
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 main 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 fuse
holder is located above the 3-pole power connector. The
power input fuses are externally accessible, if the rubber
connector is removed. The fuse holder can be released by
pressing its plastic retainers with the aid of a small screw-
driver. 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 fuse holder is
not permissible; B&K 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!
should be kept in a clean and dry room and must not be
operated in explosive, corrosive, dusty, or moist environ-
ments. 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 instru-
ment.
EMC
This instrument conforms to the European standards regar-
ding 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 and 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.
General Information