1. General Settings (Carrier Properties)

State

Choice: On | Off

Default: On

Double-click or use the drop-down menu to control the operating state of the carrier.

Oversampling Ratio

Choices: Auto, 1, 2, 4, 8, 16, 32, 64

Default: Auto

Double-click or use the drop-down menu to specify the number of times that the waveform is oversampled. When set to Auto, the oversampling ratio is automatically determined using the frequency offset of all carriers. The default setting of 2 doubles the sampling clock rate and increases the waveform size. When adding real-time noise, see Noise Bandwidth Factor.

Base Samples Per Frame

Number of sampling points per single frame is the base sampling rate (before multiplying the oversampling ratio). This cell is read only.

Frequency Offset

Range: –37.5 to 37.5 MHz

Set the frequency offset for the carrier relative to the signal generator's frequency setting.

Power

Range: –20 to 20 dB

Default: 0 dB

You can ignore this parameter for single carrier configurations. In single carrier configurations, the amplitude of the signal is determined by the Amplitude setting in the Instrument node.

 

Sets the power level in dB for the selected carrier in a multiple carrier configuration, relative to the power settings defined for the other carriers in the configuration.

The carrier power level set with this parameter determines how the total RF power level (set with the Amplitude parameter in the Instrument node) is shared by the carriers in a multiple carrier configuration. The power, set in dB, is relative to the power, in dB, of the other carriers.   

Example: Assume a two-carrier configuration with the RF power level set at –10 dBm in the instrument node. If Carrier 1 is set to 0 dB and Carrier 2 is set to 0 dB, then each carrier will be transmitted with the same power level. This means that each carrier will be transmitted at –13 dBm to maintain the total power output by the instrument at –10 dBm.

Initial Phase

Range: –180 to 180 degrees

Set the initial phase of the carrier.