Tadiran Telecom Coral IPx 500, Installation Manual

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Coral IPx 500 Installation Manual
DBX Car
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Da
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Exp
ansio
n Memory Un
it
8
provides continuous power to the memory circuitry during the absence of system
power. A battery monitor circuit signals the Main Processor when the remaining
Electrical Power stored in the lithium backup battery has exhausted to a level that can
no longer support the memory circuitry.
The DBX does not occupy a card slot within the Coral IPx 500 system cabinet. Rather,
it is installed as a baby card onto a memory interface connector on the MCP-IPx Main
Processor card. DBX cards are installed on the J1 connector on the MCP-IPx card.
Figure 8-5
.
The DBX card is equipped with an extension connector on the top side that extends
the memory interface connector from the MCP-IPx card. The J-1 connector can support
two DBX cards by stacking one memory card onto the extension connector of another.
When a DBX card is installed in the extension connector of another memory card, the
memory card installed on the MCP-IPx is referred to as the "lower” memory card, and
the DBX installed on the extension connector is referred to as the "upper" memory
card.
The CLA, when installed, is “stacked” on top of the DBX card at J1.
If required, DBX may be installed as either the lower and upper memory card at J1.
Up to two DBX cards, or one DBX card and one CLA card can be installed on the
MCP-IPx card.
Most Coral IPx 500 systems do not require a DBX at all. Special applications may
require a single DBX, and rarely would any system configuration require more than
one DBX card.
Once the system database has been installed, the position of DBX cards
(“upper” and/or “lower”) on the MCP-IPx card must not be changed.
Doing so will cause the Coral system to malfunction.