MN-DM240XR– Revision 12
D–1
Appendix D.
AutoEQ™ Interface
Operation Guide
D.1
Introduction
Appendix C outlines the operation and configuration of the AutoEQ™ PIIC Interface. The
AutoEQ™ Interface is used in conjunction with the DM240XR.
D.2
Applicable Documents
The following documents can be used for reference in aligning and troubleshooting the AutoEQ
system. Insure that the document revision is the same as the hardware revision of the assembly.
•
AN208: DM240XR Firmware Upgrade Procedure
D.3
AutoEQ™ PIIC Interface Theory of Operation
AutoEQ™ PIIC Interface allows the ability to compensate for the overall system Group Delay
and Amplitude Equalization over the satellite by pre-distorting the Uplink Carrier, eliminating the
need for external Group Delay/Amplitude Equalizers. AutoEQ™ will automatically generate the
proprietary profile for the DM240XR to pre-distort the modulator, resulting in Amplitude and
Group Delay equalization over the Satellite Link.
AutoEQ™ supports SCPC equalization of Group Delay and Amplitude over the satellite system.
When installed into the PIIC slot of the DM240XR (with Firmware Revision FO5377-J or
higher), the AutoEQ™ Calibration menu will be displayed allowing for selection and monitoring
of the AutoEQ™ functions. The AutoEQ™ will operate over the full transponder from a symbol
rate of 10.1 Msps to 45 Msps.
Note, the 45 Msps AutoEQ™ requires a different PIIC card (
PLR5972)
than the original PIIC
card (
PLR5808)
operating to 38 Msps. The new AutoEQ™ card supersedes and replaces the
original one and both are supported by revision N or later firmware.
When the AutoEQ™ Calibration mode is selected, the DM240XR will disable the existing
programmed modulated outbound signal, and replace it with the AutoEQ™ calibration signal at
the same Symbol Rate, Roll off, and Transmit frequency as programmed into the DM240XR.
Summary of Contents for Radyne DM240XR
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Page 200: ...DM240XR High Speed Digital Modulator TCP IP Ethernet Setup MN DM240XR Revision 12 B 8 Notes ...
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