CMC 353 Reference Manual
10
• The SELV interfaces (SELV = Safety Extra Low Voltage) of the
CMC 353 - "Host Interf.", “ETH1”, “ETH2”, "LL out" (L
ow Level Outputs)
or "ext. Interf." - should only have external devices connected that meet
the requirements for SELV equipment according to EN 60950 or IEC
60950.
• For applications drawing DC current: The load may not exceed 3 mH
because of dangerous feedback current.
• When setting up the CMC 353, make sure that the air slots on the back,
top, and bottom of the test set remain unobstructed.
• Voltages up to 1 kV can be present inside the CMC 353! Therefore,
opening the CMC 353 is only permitted by qualified experts either at the
factory or at certified external repair centers.
•If the CMC 353 is opened by the customer, all guarantees are
invalidated.
• CMC 353 Ethernet functionality (see section 5.2.1, "Ethernet Ports ETH1
and ETH2" on page 32):
- Connect ETH1 and ETH2 only to Ethernet ports.
•If the CMC 353 seems to be functioning improperly, please contact the
OMICRON Tecnical Support (see section "Contact Information /
Technical Support" on page 95).
Changing the Power Fuse
• Unplug the power cord between the test set and the power source.
• The fuse is located at the back of the test set.
• Fuse type: T12.5 AH 250 V (wire fuse 5 × 20 mm).
For safety reasons please use only fuse types recommended by the
manufacturer. Refer to 6.1, "Main Power Supply" on page 39 for more
information.
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