Range: 1 KHz to 125 MHz
Default: 20.48 MHz
The sample clock rate of the signal generator is automatically calculated by the software.
This parameter is read-only for the N5182A signal generator and is grayed out.
Choice: Internal | External
Default: Internal
Double-click or use the drop-down menu to select the signal generator’s VCO Clock.
Internal − the signal generator uses its internal VCO Clock.
External − the signal generator uses an external VCO Clock.
Range: 1 to 100% (100% = no scaling)
Default: 70%
Use this cell after downloading and synchronizing with the signal generator.
Use this parameter to reduce the overshoot associated with the digital-to-analog convertor (DAC) interpolation filter. Enter a scaling value for the signal generator to apply to the waveform while it is playing. Use scaling to get the best dynamic range without overflowing the I and Q digital to analog converters. At 100 percent, some overshoot may occur; therefore the default setting is 85 percent.
This parameter is read-only for the N5182A signal generator and is grayed out.
Choice: Auto | 2.1 MHz | 40 MHz | Through
Default: Auto
Use this cell after downloading and synchronizing with the signal generator.
Use this cell to select a filter for I/Q signals modulated onto the RF carrier. The bandwidth of the baseband signal should dictate the minimum reconstruction filter bandwidth you choose. Depending on the oversampling ratio and where the image frequencies appear, you may want to select a wider bandwidth.
Auto − automatically selects a digital modulation filter.
2.1 MHz − applies a 2.1 MHz baseband filter to the I/Q signals.
40 MHz − applies a 40 MHz baseband filter to the I/Q signals.
Through − bypasses filtering.
This parameter is read-only for the N5182A signal generator and is grayed out.
Choice: Auto | 40 MHz | Through
Default: Auto
Use this cell after downloading and synchronizing with the signal generator.
Use this cell to select a filter or through path for routing I and Q signals to the rear panel I/Q outputs.
Auto − automatically selects an I/Q output filter.
40 MHz − applies a 40 MHz baseband filter.
Through − bypasses filtering.
Choice: Auto | Manual
Default: Auto
Set the modulation attenuation mode for the I/Q modulator to automatic or manual.
− the signal generator optimizes the modulation attenuation for the current conditions.
− applies the value set in the cell.
Set the attenuation of the I/Q signals being modulated through the signal generator RF path. Adjusting the attenuation may reduce signal distortion and improve the overall dynamic range.
Range: 0 to 40 dB (minimum increment 0.01 )
Default: 6.00 dB
Use this parameter to reduce the signal level driving the I/Q modulation block. Adjusting the attenuation may reduce signal distortion and improve the overall dynamic range.
Set the Modulation Attenuation Mode to to enable this parameter.
This parameter is read-only for the N5182A signal generator and is grayed out.
Choice: Off | On
Default: Off
Double-click or use the drop-down menu to enable or disable the signal generator's high crest mode.
− processes high-crest-factor arbitrary I/Q waveforms with less distortion. For crest factors higher than 4 dB, you should reduce I/Q Modulation Attenuation levels by 1 dB for each dB above that level. High crest mode reduces the maximum output level and degrades power level accuracy.
− disables the high crest mode.
This parameter is read-only for the N5182A signal generator and is grayed out.
Choice: Internal | External
Default: Internal
Use this cell after downloading and synchronizing with the signal generator.
Double-click or use the drop-down menu to select the signal generator’s ARB reference source.
− the signal generator uses its internally generated 10 MHz signal as the reference source.
− the signal generator uses an external signal as the reference frequency for the baseband I/Q signal. See the signal generator’s user’s guide for information on external references.
This parameter is read-only for the N5182A signal generator and is grayed out.
Range: 0.250 to 100 MHz
Default: 10.00 MHz
Enter a frequency value when using an externally supplied reference signal. See the signal generator’s user’s guide for information on external references.
Set ARB Reference to to enable this parameter.