Putting Into Operation - Conrad Electronic MS-9160 Notice D'emploi

3.27 The power supply outputs and their connecting leads, sockets and
terminals must be protected from direct touch. In addition, the
leads used must be sufficiently insulated and voltage-proof and
the contact points safe from being touched (safety sockets).
3.28 Use of bare metal leads and contacts should be avoided. All these
items are to be covered by suitable, non-inflammable insulation or
other arrangement and thereby protected from being touched.
The electrically-conducting parts of the connected load must also
be appropriately protected from direct touch.
3.29 When safe operation is considered no longer possible, the instru-
ment must be placed out of service and secured against uninten-
ded use. It is to be assumed that safe operation is no longer possi-
ble, if
- the instrument shows visible signs of damage,
- the instrument no longer functions and
- after prolonged storage under unfavourable conditions or
- after severe transportation stress.
3.30 To reduce the danger of possible electric shock and to guarantee
optimum operation of the measuring instrument, the case and
chassis must be electrically grounded (via a grounded AC socket).
The central ground (safety conductor) connector is in the socket on
the rear of the case. The power cable supplied, equipped with a
grounded plug, must be connected to an approved grounded
socket.
3.31 The frequency counter and function generator BNC sockets are
floating, i.e. they are not connected to ground.
Attention!
Only for use indoors.
While opening or closing the case, the instrument must be disconnected
from all voltage sources. To preclude any risk of additional sources of
danger, never exchange components or subassemblies unaided and
make no supposed improvements to this universal measuring instru-
ment. Otherwise, the instrument can be damaged and thereby all gua-
rantee claims become void.
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Warning instructions and their symbols!
Within these instructions the following various safety symbols can be
found:
These symbols encourage the user to read the instructions
carefully, to obviate damage to the instrument.
The "lightning strike" represents a dangerous voltage!
The earth/ground symbol indicates a grounding point.
CAT II = Overvoltage category II
Remarks and passages containing these symbols, which are indicated
with "Attention!" or "Note!", must be followed without fail.

4. PUTTING INTO OPERATION

4.1 Unpacking and checking the instrument!
Once the instrument is unpacked, check for the presence of all acces-
sories and check the integrity of the instrument.
4.2 AC power input
The Euro-socket, the AC fuse and the AC voltage-change switch are
on the rear of the case. Plug the supplied AC power cable into the
measuring instrument and its plug into a grounded AC socket. Ensu-
re firm, safe connection of the AC power cable, both to the measu-
ring instrument and to the AC socket.
4.3 AC power voltage magnitude and type
The instrument operates with voltages from 220 to 240V AC with a
permissible tolerance of ± 10 %, with a frequency of 50 Hz or 60 Hz.
4.4 Changing the AC power voltage setting!
Attention!
Without fail, disconnect the instrument from all circuits being measured
and above all from AC power before changing the setting. Remove the
AC power plug from the socket, disconnect the AC power cable from the
instrument and ensure that the instrument is absolutely free of voltages
and not connected to any circuit.
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