Asi (Asynchronous Serial Interface); Aasi (Advanced Asynchronous Serial Interface); Asi Monitor; Parallel Rs-422 Interface - Radyne ComStream DM240-DVB Installation And Operation Manual

Rear Panel Interfaces DM240-DVB High-Speed Digital Modulator

5.15.1.1 ASI (Asynchronous Serial Interface)

The interface complies with DVB ASI Electrical Specifications. The maximum data rate is 216
Mbps.

5.15.1.2 AASI (Advanced Asynchronous Serial Interface)

The AASI Interface is a specialized mode of the normal ASI Interface. The interface allows the
user to input a variable rate data stream into the modulator (as long as the input data rate does
not exceed the programmed data rate). The AASI Interface inserts MPEG-2 Null Packets to
provide a constant data rate to the modulator.

5.15.2 ASI Monitor

Incoming data from the active PIIC slot is output on this interface, allowing the customer to
monitor the incoming data stream. The interface complies with DVB ASI Electrical Specifications.

5.15.3 Parallel RS-422 Interface

This interface supports two terrestrial interface types and complies with RS-422 Electrical
Specifications.

5.15.3.1 M2P

Refer to Table 5-5 for pinouts.

5.15.3.1 DVB

Refer to Table 5-6 for pinouts.

5.15.4 Parallel LVDS Interface

This interface is identical to the Parallel RS-422 Interface except that it complies with the LVDS
Electrical Specification.
5-12 TM083 - Rev. 3.0