Test Set CMC 156
4
For your safety
The generator outputs supply voltages up to 125 V
rms
therefore:
• Operate the CMC 156 only with mains suppy with protective grounding!
• Connecting of one of the front-sided connectors to protective ground is not
permissible as this may cause dangerous contact voltages at all front panel
connectors. Grounding of a voltage output causes that also the sockets of
the analog inputs as well as the current outputs and N-connectors have
phase voltage.
• Use only measuring cables with 4 mm banana plugs and plastic jacketing
for connection to banana sockets; always insert plugs up to the stops.
Recommendation: use 4 mm safety banana plugs.
• Do not leave test leads exposed; always disconnect test leads at the
CMC 156 first!
• When connecting and disconnecting the test object make sure that all
generator outputs have been turned "OFF". Never disconnect the test
object when in a manual program section a switch in the software is "ON"
or a sweep is still under way (e.g. V, I, ϕ).
• All front panel sockets are to be considered as dangerous voltage contacts
with working voltages of up to 250V
rms
. Therefore only cables certified to
the corresponding national standards institute may be used.
• If the generator section lamp lights, there is a dangerous contact voltage
(> 42 Vpk) at least at one of the three voltage outputs!
• Never insert conductive parts (screwdriver, etc.) into the sockets!
• Do not operate in a wet or humid environment (condensation).
• Do not operate if an explosive environment.
• External devices may only be connected to the SELV interfaces of the
CMC 156 (host-interface, Gen. out 7-12, ext. Interface) if they comply to the
SELV requirements according to EN60950.
Do not open the CMC 156 or remove any of its housing components
Voltages of up to 400 V will occur inside the unit! If the unit is opened,
warranty claims will become void.
If the mains fuse must be replaced (rear panel of the test set)
First disconnect the mains plug of the CMC test set!
Unscrew the plastic tile and change the fuse (T6.3AH 250V).
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