Radyne DM240XR Specifications download pdf (Page 77)

DM240XR High-Speed Digital Modulator Rear Panel Interfaces

MN-DM240XR– Revision 13 5–7

5.12 Plug-In Interface Cards (PIICs)

The DM-240XR provides the customer with 2 standard PIIC slots. With PIIC interfaces there is

greater flexibility for changing and upgrading the terrestrial interface. Each of the interfaces

described below consists of a single card with a metal back plate. Each interface can be plugged

into one of two slots on the rear of the unit (Figure 5-4).

Figure 5-4, Typical PIIC

To insert the PIIC, slide the card completely into the appropriate slot (1 or 2) ensuring that it lines

up with the alignment slots. When the PIIC is fully seated, tighten the two screws hand tight

5.12.1 ASI PIIC

This interface supports two terrestrial interface types.

5.12.1.1 ASI (Asynchronous Serial Interface)

The ASI interface is supported on the BNC Connector (Figure 5-1c). The interface complies with

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

5.12.1.2 AASI (Advanced Asynchronous Serial Interface)

The AASI Interface is a specialized mode of the normal ASI Interface (Figure 5.1b). 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.

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Radyne DM240XR Specifications Page 77