6
Subject to change without notice
Symbols
See user's manual
Danger high voltage
Earth
General Information
This oscilloscope is easy to operate. The logical
arrangement of the controls allows anyone to quickly
become familiar with the operation of the instrument,
however, experienced users are also advised to read
through these instructions so that all functions are
understood.
Immediately after unpacking, the instrument should be
checked for mechanical damage and loose parts in the
interior. If there is transport damage, the supplier must be
informed immediately. The instrument must then not be
put into operation.
Use of tilt handle
To view the screen from the best angle, there are three
different positions (C, D, E) for setting up the instrument. If
the instrument is set down on the floor after being carried,
the handle automatically remains in the upright carrying
position (A).
In order to place the instrument onto a horizontal surface, the
handle should be turned to the upper side of the oscilloscope
(C). For the D position (10° inclination), the handle should be
turned to the opposite direction of the carrying position until
it locks in place automatically underneath the instrument. For
the E position (20° inclination), the handle should be pulled to
release it from the D position and swing backwards until it
locks once more.
The handle may also be set to a position for horizontal
carrying by turning it to the upper side to lock in the B
position. At the same time, the instrument must be lifted,
because otherwise the handle will jump back.
Safety
This instrument has been designed and tested in accor-
dance with
IEC Publication 348, Safety Requirements
for Electronic Measuring Apparatu
s. The CENELEC
HD401 regulations correspond to this standard. It has left
the factory in a safe condition. This instruction manual
contains important information and warnings which have
to be followed by the user to ensure safe operation and to
retain the oscilloscope in a safe condition. The case,
chassis and all measuring terminals are connected to the
protective earth contact of the appliance inlet. The
instrument operates according to
Safety Class I
(three-
conductor power cord with protective earthing conductor
and a plug with earthing contact). The mains/line plug shall
only be inserted in a socket outlet provided with a protective
earth contact. The protective action must not be negated
by the use of an extension cord without a protective
conductor.
The mains/line plug should be inserted before connections
are made to measuring circuits.
The grounded accessible metal parts (case, sockets,
jacks) and the mains/line supply contacts (line/live, neu-
tral) of the instrument have been tested against insulation
breakdown with 2200V DC.
Under certain conditions, 50Hz or 60Hz hum voltages
can occur in the measuring circuit due to the inter-
connection with other mains/line powered equipment
or instruments. This can be avoided by using an isolation
transformer (Safety Class II) between the mains/line
outlet and the power plug of the device being
investigated.
Most cathode-ray tubes develop X-rays. However,
the
dose equivalent rate falls far below the maximum
permissible value of 36pA/kg (0.5mR/h).
Whenever it is likely that protection has been impaired,
the instrument shall be made inoperative and be secured
against any unintended operation. The protection is likely
to be impaired if, for example, the instrument
−
shows visible damage,
−
fails to perform the intended measurements,
−
has been subjected to prolonged storage under
unfavourable conditions (e.g. in the open or in moist
environments),
−
has been subject to severe transport stress (e.g. in poor
packaging).
Operating Instructions
