Radyne DM240XR Spécifications télécharger pdf (Page 186)

DM240XR High-Speed Digital Modulator AutoEQ™ Interface Operation Guide

MN-DM240XR– Revision 13 D–6

(EQ CAL: Cont)

REF ACQ: Although default reference files are provided, the

operator may wish to acquire the best possible reference from

their modulator. A mechanism to accomplish this is allowed by

REF ACQ, this overwrites the stored default and replaces it with

a new reference. Prior to entering this state, the L-Band output

of the DM240XR (J11) must be connected to the AutoEQ™

RXRF Input (J12). The DM240XR Output power should be set

to -20 dBm, and a 20 dB in line attenuator should be used. The

Modulator output frequency should be set to set to the

corresponding AutoEQ™ RXRF Input Frequency. When

properly connected and in this state, the AutoEQ™ will program

the DM240XR modulated output for the AutoEQ™ calibration

signal. The calibration output bandwidth is set by the symbol

rate currently programmed into the DM240XR Modulator.

During reference calibration, the AutoEQ™ will obtain receive

lock and establish the baseline coefficients for internal reference.

References are captured for each modulator roll-off and

oversample rate. During this process, the MSE can be monitored

reflecting the Reference Acquisition process. Upon successful

completion of the Reference Acquisition, the REF ACQ will

revert to the “Normal” state, and the event log of the DM240XR

will reflect “REF ACQ SUCCESSFUL”.

RESTORE EQ CAL: {Filename}

Allows the selected Calibration coefficient file to be Restored.

EQ RENAME: {Filename}

Allows the Calibration coefficient file to be renamed using

Alpha-numeric characters.

EQ DELETE: {Filename}

Allows the selected Calibration coefficient file to be deleted.

EQ RECEIVER: {Local, Remote}

Allows selection of Local or Remote Equalization.

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Radyne DM240XR Spécifications Page 186