Nortel-networks Circuit Card Bedienungsanleitung Seite 317

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NT5D60/80 CLASS Modem card (XCMC) Page 317 of 906
Circuit Card Description and Installation
Electrical specifications
This section lists the electrical characteristic of the CLASS modem card.
Data transmission specifications
Table 110 provides specifications for the 32 transmit-only modem resources.
The CLASS modem card has no direct connection to the Public Network.
Power requirements
The CLASS modem card requires less than 1.0 Amps of +5V dc ± 1% supply
supplied by the power converter in the IPE shelf.
Environmental specifications
Table 111 shows the environmental specifications of the card.
Table 110
CLASS modem card—data transmission electrical characteristics
Characteristics Description
Units per card 32 transmit only modem resources
Transmission rate 1200 ± 12 baud
Table 111
CLASS modem card – environmental specifications
Parameter Specifications
Operating temperature 0° C to +65° C (+32 ° F to +149 ° F)
Operating humidity 5 to 95% RH (non-condensing)
Storage temperature –50° C to +70° C (–58 ° F to +158 ° F)
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