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conductive pollution or dry nonconductive pollution which could become conductive due to
condensation. Failure to maintain these minimum distances would invalidate approval.
C
e l
r a
n a
Power Supply Unit
or other source of
excessive voltage
Fig. B-1. Example Diagram Showing Creepage and Clearance Distances
Except at the edge connector which plugs into the host's expansion slot, clearance distance
(Xmm) and creepage distance (Ymm) as given in the table above, must be maintained between
the communication card and any assemblies which use or generate hazardous voltage.
This apparatus has been approved for the use of the following facilities:
• Auto-calling
• Loop disconnect and MF dialing
• Phone number storage and retrieval by a predetermined code
• Operation in the absence of proceed indication
• Automatic storage of last number dialed
• Tone detection-busy
• Auto clear from the originating end
• DTR dialing
48
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Example Diagram Showing Creepage
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Carrier Card
Expansion Card
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CommPlete 4000 Communications Server Overview
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