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120

uGain

The value, in unit of 1/256 dB, to be set to transmission Variable Gain Amplifier (VGA) of

the RF front-end.

Return Value

SoraURadioSetTxGain returns S_OK if the Tx Gain is successfully set.

Comments

SoraURadioSetTxGain sets the transmission variable gain amplifier of the RF front-end. The

gain control is specified in unit of 1/256 dB. However, the true precision of VGA depends on the

implementation of the RF front-end.

36) SoraURadioSetRxPA

HRESULT

SoraURadioSetRxPA (

ULONG uRadioID,

ULONG RxPa

);

Parameters

uRadioID

The ID referring to the radio object.

RxPa

The gain value sent to the RF front-end to configure the receiving Low Noise Amplifier

(LNA).

Return Value

SoraURadioSetRxPA returns S_OK if the Rx PA is successfully set.

Comments

SoraURadioSetRxPA writes a value to the virtual control register of the RF front-end to

provide a hint to configure LNA on the reception path. The value depends on the

implementation of the RF front-end board. For USRP XCVR2450 board, there can be three

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UMX FLIP Installation Guide Page 121