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Requirements for European Operation
114200-E Rev 00
D-13
Power Requirements for ISDN BRI and Serial Adapter
Modules
The ISDN BRI and serial adapter modules obtain power from the host chassis and
have the power requirements shown in Table D-14
.
The power drawn from the host chassis combined with that required for any other
cards and accessories must be within the power rating of the host chassis.
When you install an ISDN BRI or serial adapter module in an ARN, make sure
that you do not impair the integrity of the network protection from hazardous
voltages used or generated internally by the host chassis.
Clearance and Creepage Distances for ISDN BRI and Serial
Adapter Modules
The clearance and creepage distances (shown as X and Y, respectively, in
Figure D-7
and Table D-15) must be maintained between the card and:
• The host chassis in which it is installed
• Any adjacent cards installed in the host chassis
The exception to this rule is the edge connector, which resides in the host chassis
backplane, where no minimum distance applies.
Table D-14. ISDN BRI Power Requirements
Voltage Amperage
+5 V 1 A
+12 V 0.15 A
-12 V 0.15 A