Hameg Instruments HM8001-2 Handbuch Seite 13

statement, representation, agreement or
understanding, oral or written, made by an
agent, distributor, representative or employee
of, which is not contained in this warranty will
be binding upon Hameg, unless made in writing
and executed by an authorized Hameg
employee. Hameg makes no other warranty of
any kind whatsoever, expressed or implied, and
all implied warranties of merchantibility and
fitness for a particular use which exceed the
aforestated obligation are hereby disclaimed by
Hameg be liable to buyer, in contract or in tort,
for any special, indirect, incidental or
consequential damages, espresses, losses or
delays however caused.
In case of any complaint, attach a tag to the
instrument with a description of the fault
observed. Please supply name and department,
address and telephone number to ensure ra-
pid service.
The instrument should be returned in its origi-
nal packaging for maximum protection. We
regret that transportation damage due to poor
packaging is not covered by this warranty.
Maintenance
The most important characteristics of the
instruments should be periodically checked
according th the instructions provided in the
sections "Operational check and "Alignment
procedcure. To obtain the normal operating
temperature, the mainframe with inserted
module should be turned on at least 60 minutes
before starting the test. The specified alignment
procedure should be strictly observed.
When removing the case detach mains/line
cord and any other connected cables from case
of the mainframe HM8001-2. Remove both
screws on rear panel and, holding case firmly
in place, pull chassis forward out of case. When
later replacing the case, care should be taken
to ensure that it properly fits under the edges
of the front and rear frames.
After removal of the two screws at the rear of
the module, both chassis covers can be lifted.
When reclosing the module, care should be
taken that the guides engage correctly with the
front chassis.
Operation of the module
Provided that all hints given in the operating
instructions of the HM8001-2 Mainframe were
followed especially for the selection of the
correct mains voltage start of operation
consists practically of inserting the module into
the right or left opening of the mainframe. The
following precautions should be observed:
Before exchanging the module, the mainframe
must be switched off. A small circle (o) is now
revealed on the red power button in the front
centre of the mainframe.
If the BNC sockets at the rear panel of the
HM8001-2 unit were in use before, the BNC
cables should be disconnected from the basic
unit for safety reasons. Slide in the new module
until the end position is reached.
Before being locked in place, the cabinet of the
instrument is not connected to the protective
earth terminal (banana plug above the
mainframe multipoint connector). In this case,
no test signal must be applied to the input
terminals of the module.
Generally, the HM8001-2 set must be turned
on and in full operating condition, before
applying any test signal. If a failure of the
measuring equipment is detected, no further
measurements should be performed. Before
switching off the unit or exchanging a module,
the instrument must be disconnected from the
test circuit.
Installation
If the HM8001-2 is to be stacked with other
mainframes or HAMEG Oscilloscopes, the
exact positioning is only ensured by the
footrests delivered with the instrument. The-
se should be attached to the top of each
instrument (except the uppermost one) using
the double-sided adhesive tape provided. Insert
the footrests into the appropriate ventilation
holes on top of the lower instrument in such a
way that they correspond exactly with the
positioning of the feet on the instrument to be
stacked above. Instruments stacked in a tilted
position will now be prevented from slipping.
13