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Optional Configuration

Figure 11. Locations of DAC348x to Transformer Output Jumper Locations

Provide the clock input 1228.8 MHz at 1.5Vrms at J9 SMA connector of the DAC3484 EVM

Turn on power to the board and press the reset button on the EVM

Press the “Reset USB Port” button in GUI and verify USB communication.

Switch to the INPUT tab of GUI

Click “LOAD REGS”, browse to the installation folder and load example file

DAC3484_FDAC_1228p8MHz_4xint_NCO_30MHz_QMCon.txt. This file contains settings for 4x interpolation with the DAC3484 running at 1228.8MSPS. Load this file and wait a couple of seconds for the settings to go into effect.

Verify the spectrum using the Spectrum Analyzer at the four DAC outputs of the DAC EVM (J7, J6, J3, and J2).

(Toggle the SIF SYNC button to sync the appropriate digital blocks, if example file with NCO setting is used)

SLAU336 –March 2011

DAC3484/DAC3482 EVM

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Texas Instruments DAC3484, DAC3482 installation instructions Locations of DAC348x to Transformer Output Jumper Locations