Radyne DM240XR Specifications download pdf (Page 30)

DM240XR High-Speed Digital Modulator User Interfaces

MN-DM240XR– Revision 13 4–8

GOLD SEQ N: {0 - 262142}

Gold code sequence index. Displayed only in DVB-S2.

LAST RATE CTRL: {SYMBOL RATE, DATA RATE, AUTO}

Indicates the rate (symbol or data) that is maintained when

associated parameters (i.e. Modulation, Inner FEC Code Rate,

Terr Framing) are changed. For example, if the Last Rate

Control is set to “Symbol Rate” and the modulation is

subsequently changed, the system will attempt to maintain the

same symbol rate by adjusting the data rate. If the Last Rate

Control is set to “Data Rate” and the modulation is subsequently

changed, the system will attempt to maintain the same data rate

by adjusting the symbol rate.

The “Auto” Setting of Last Rate Control causes the last

explicitly changed rate (symbol or data) to be maintained when

associated parameters are changed. For example, if the last rate

control is set to “Auto” and the Data Rate is subsequently

explicitly changed, any subsequent changes to Modulation or

Inner FEC Rate would cause the symbol rate to be adjusted in

order to maintain the Data Rate.

EQ ENABLE: {Enable, Disable}

Allows the DM240XR Modulator to implement the AutoEQ™

coefficient values as specified by the EQ Select.

EQ SELECT: None, User Specified Name}

Allows the DM240XR Modulator to select the stored AutoEQ™

coefficient file to be implemented. Up to 32 User Nameable

storage locations are available.

RXIF: {950 – 2050 MHz}

Sets the receive input center frequency for the AutoEQ™

Interface Card. This programmed frequency must be within +

kHz of the actual desired system downlink center frequency to

insure proper acquisition.

MSE: {Value}

Displays the Mean Squared Error (MSE) value of the equalizer.

A value of 1 E-5 or less indicates a successful calibration run

with acceptable coefficients for operation over the satellite.

EQ CAL: {Normal, Calibrating, Ref ACQ}

Allows the DM240XR Modulator to select the AutoEQ™

interface mode of operation.

Normal:When in this state, the AutoEQ™ is in monitoring

mode, with no Calibration or Reference Acquisition functions

being preformed.

Calibrating: When in this state, the AutoEQ™ will program the

DM240XR modulated output for the AutoEQ™ calibration

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Radyne DM240XR Specifications Page 30

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