Nortel Networks 553-3001-211 manual 524 of 894 NT8D02 and NTDK16 Digital Line cards

Page 524 of 894 NT8D02 and NTDK16 Digital Line cards

the sanity timer every 1.2 seconds. If the timer is not properly serviced, it times out and causes the microcontroller to be hardware reset.

Circuit power

The +15 V dc input is regulated down to +10 V dc for use by the digital line interface circuits. The ±15.0 V dc inputs to the card are used to power the loop interface circuits.

Electrical specifications

This section lists the electrical characteristics of the NT8D02 Digital Line card.

553-3001-211 Standard 2.00 September 2004