Operation Of The Module - Hameg Instruments HM 8021-3 Manual De Instrucciones

telephone number to ensure rapid 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. 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.
Sous réserve de modifications / Reservado el derecho de modificación

Operation of the module

Provided that all hints given in the operating
instructions of the HM8001 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 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 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.
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