Important Hints; Symbols; Unpacking; Positioning - Rohde & Schwarz HAMEG HM8123 Benutzerhandbuch

Important hints

1 Important hints
(1) (2) (3)
1.1

Symbols

Symbol 1: Attention, please consult manual
Symbol 2: Danger! High voltage!
Symbol 3: Ground connection
1.2

Unpacking

Please check for completeness of parts while unpacking.
Also check for any mechanical damage or loose parts, due
to transportation. In case of transport damage inform the
supplier immediately and do not operate the instrument.
1.3

Positioning

Two positions are possible: According to Fig. 1 the front
feet are folded down and are used to lift the instrument so
its front points slightly upward (approx. 10 degrees). If the
feet are not used (Fig. 2) the instrument can be stacked
safely with many other HAMEG instruments. In case
several instruments are stacked (Fig. 3) the feet rest in the
recesses of the instrument below so the instruments can
not be inadvertently moved..
Fig. 1
Fig. 2
Fig. 3
Please do not stack more than 3 instruments. A higher
stack will become unstable, also heat dissipation may be
impaired.
1.4

Transport and Storage

Please keep the shipping carton in case the instrument
may require later shipment for repair. Losses and damages
during transport as a result of improper packaging are ex-
cluded from warranty!
18
Dry indoors storage is required. After exposure to extreme
temperatures 2h for accomodation to ambient temperature
before turning the instrument on.
1.5

Safety instructions

The instrument conforms to VDE 0411/1 safety standards
applicable to measuring instruments and left the factory in
proper condition according to this standard. Hence it con-
forms also to the European standard EN 61010-1 resp. to
the international standard IEC 61010-1. Please observe all
warnings in this manual in order to preserve safety and
guarantee operation without any danger to the opera-
tor. According to safety class 1 requirements all parts of
the housing and the chassis are connected to the safety
ground terminal of the power connector. For safety rea-
sons the instrument must only be operated from 3 terminal
power connectors or via isolation transformers.
Do not disconnect the safety ground either inside or
outside of the instrument!
In case of doubt the power connector should be checked
according to DIN VDE 0100/610:
❙ The line voltage of the instrument as shown on the type
label must correspond to the line voltage used.
❙ Only qualified personnel may open the instrument
❙ Prior to opening the instrument must be disconnected
from the line and all other inputs/outputs.
In any of the following cases the instrument must be taken
out of service and locked away from unauthorized use:
❙ Visible damages
❙ Damage to the power cord
❙ Damage to the fuse holder
❙ Loose parts
❙ No operation
❙ After longterm storage in an inappropriate environment,
e.g. open air or high humidity.
❙ Excessive transport stress
1.6

Proper operating conditions

Operation in the following environments: industry, busi-
ness and living quarters, small industry. The instruments
are intended for operation in dry, clean environments. They
must not be operated in the presence of excessive dust,
humidity, nor chemical vapours in case of danger of ex-
plosion. The maximum permissible ambient tempera-
ture during operation is +5 °C to +40 °C. In storage or du-
ring transport the temperature limits are: –20 °C to +70 °C.
In case of exposure to low temperature or if condensation
is suspected, the instrument must be left to stabilize for at
least 2 hrs prior to operation. In principle the instrument
may be used in any position, however sufficient ventilation
must be ensured. Operation for extended periods of time
requires the horizontal or tilted (handle) position. Nominal
specifications are valid after 30 minutes warm-up at 23 °C.
Specifications without tolerances are typical values taken
of average production units.