Output:Digital Gain Property

NI Signal Generators Help (NI-FGEN 18.1)

Edition Date: April 2018

Part Number: 370524V-01

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Short Name: Digital Gain

Property of niFgen

Specifies a factor by which the signal generator digitally multiplies generated data before converting it to an analog signal in the DAC. For a digital gain greater than 1.0, the product of digital gain times the generated data must be inside the range ±1.0, assuming floating point data. If the product exceeds these limits, the signal generator clips the output signal, and an error results.

Some signal generators support both digital gain and analog gain, specified with the Amplitude property or Arbitrary Waveform Gain property. Digital gain can be changed during generation without the glitches that may occur when changing analog gains, because of relay switching. However, the DAC output resolution is a function of analog gain, so only analog gain makes full use of the resolution of the DAC.

Default Value: 1

Remarks

The following table lists the characteristics of this property.

Datatype fD
PermissionsRead/Write
High-level VIs N/A
Channel-based Yes
ResettableYes

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