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4 static sensitivity, 5 hot patching (hot plugging), 6 analog port numbering – Clear-Com HX System Frames User Manual

Page 37: Static sensitivity, Hot patching (hot plugging), Analog port numbering

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4.4.4 Static sensitivity

Observe anti-static procedures. Devices can be damaged by static
electricity. Personnel reconnecting the battery should ensure that they
ground themselves and all tools before touching cards.

A CPU / interface card’s components include CMOS chips that are sensitive to static
electricity. Before touching a card first touch a grounded metal object, such as any unpainted
surface on the matrix, to dissipate static electricity. When handling a card, be careful not to
bend any of the card’s connector pins or component leads.

Store spare cards in electrically insulated packaging, such as anti-static heavy duty plastic
bags or in unused card slots

(though not fully seated)

in the matrix.

4.4.5 Hot patching (hot plugging)

Interface cards are hot patchable and self initializing, which means that a faulty card can
be removed and replaced while the system is powered. Hot patching (also known as hot
plugging) has no effect on any part of the system’s operation, except the MVX-A16 analog
card’s assigned sixteen ports.

Communication with a card’s connected devices will be interrupted when that card is
removed from the matrix. When the card is replaced, communication is restored.

4.4.6 Analog port numbering

One MVX-A16 interface card supports 16 analog ports. A grid printed on the matrix’s rear
panel gives the numbering scheme for the analog ports.


Figure 7: Analog port number scheme

37

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