Rear Panel Interfaces
DM240XR-DVB High-Speed Digital Modulator
5-8
TM120 - Rev. 1.1
5.11.1 ASI PIIC
This interface supports two terrestrial interface types.
5.11.1.1 ASI (Asynchronous Serial Interface)
The ASI interface is supported on the BNC Connector (Figure 5-1b). The interface complies with
DVB ASI Electrical Specifications. The maximum data rate is 216 Mbps.
5.11.1.2 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.
5.11.2 ASI Monitor
Incoming data from the active PIIC slot is output on this interface (Figure 5-1c), allowing the
customer to monitor the incoming data stream. The interface complies with DVB ASI Electrical
Specifications.
5.11.3 Parallel RS-422 Interface
This interface supports two terrestrial interface types and complies with RS-422 Electrical
Specifications (Figure 5.1f).
5.11.3.1 M2P (Parallel, RS-422)
M2P is supported on the DB-25 female connector. It complies with RS-422 Electrical
Specifications. Refer to Table 5-5 for pinouts for this connector. The maximum data rate is 238
Mbps.
Table 5-5. M2P RS-422 Parallel - 25-Pin Female
Pin No.
Signal Name
Direction
1
Output
14 OUTCLK-
Output
2 CLK+
Input
15 CLK-
Input
3 SYNC+
Input
16 SYNC-
Input
4 VALID+
Input
17 VALID-
Input
5 D0+
Input
18 D0-
Input
Summary of Contents for DM240XR
Page 2: ......
Page 10: ...Table of Contents DM240XR High Speed Digital Modulator x TM120 Rev 1 1 ...
Page 12: ...Introduction DM240XR High Speed Digital Modulator 1 2 TM120 Rev 1 1 ...
Page 16: ...Installation DM240XR High Speed Digital Modulator 2 4 TM120 Rev 1 1 ...
Page 19: ...DM240XR High Speed Digital Modulator Theory of Operation TM120 Rev 1 1 3 3 ...
Page 55: ...User Interfaces DM240XR High Speed Digital Modulator 4 36 TM120 Rev 1 1 ...
Page 67: ...Rear Panel Interfaces DM240XR DVB High Speed Digital Modulator 5 12 TM120 Rev 1 1 ...
Page 69: ...Maintenance and Troubleshooting DM240XR High Speed Digital Modulator 6 2 TM120 Rev 1 1 ...
Page 79: ...Technical Specifications DM240XR High Speed Digital Modulator 7 10 TM120 Rev 1 1 ...
Page 103: ...Appendix A DM240XR High Speed Digital Modulator A 24 TM120 Rev 1 1 ...
Page 124: ...DM240XR High Speed Digital Modulator Appendix B TM120 Rev 1 1 B 21 ...