Signal Analyzer

This block is to configure the Signal Analyzer instrument.

The supported Signal Analyzer models are listed below, including the necessary option for bandwidth:

Model Number Bandwidth Option
N9010A

Option B40 (40 MHz)

Option B85 (85 MHz)

Option B1A (125 MHz)

Option B1X (160 MHz)

N9020A
N9030A

Instrument Connection Button

This button connects to the instrument after entering the its Address in the Configuration property grid. It also displays the following status conditions:

Capture Button

Click this button to capture the IQ waveform from the signal analyzer into a I/Q file or a MATLAB Variable.

Signal Analyzer Setting Table

1. Configuration

2. Basic

Address

Instrument

Ref Power Mode

Ref Power

Trigger Source

Trigger Delay

Sample Rate

Capture Sample Length

Trigger Source

1. Configuration

Address

Enter the instrument address.

The drop down list of Address lists the recently used instrument address and the connection strings (GPIB, USB, LAN, etc.) configured in the IO Connection Expert.

Instrument

Default: N9020A

This parameter displays the model number and serial number of the instrument if the status of Instrument Connection Button is Connected.

2. Basic

Ref Power Mode

Choice: Auto | Manual

Default: Auto

Set the method of setting reference power in the signal analyzer.

Ref Power

Range: -100 to 30 dBm

Default: -10 dBm

Coupling: Available only when the Ref Power Mode is set to Manual.

Set the reference power for the signal analyzer. This setting will affect the preamplifier and attenuator settings in the Signal Analyzer.

Trigger Source

Choice: Free Run | Video | Line | External 1 | External 2 | RF Burst

Default: External 1

Set the trigger source.

Trigger Delay

Range: for trigger delay values, see the Signal Analyzer's data sheet

Default: 0 s

Set the trigger delay.

Sample Rate

Range: for sample rate values, see the Signal Analyzer's data sheet

Default: 5 MHz

Coupling: This value is coupled with the Sample Clock value in RF Signal Generator block.

This parameter is read only and displays the sample rate used for capturing data in the Signal Analyzer.

Capture Sample Length

Range: for different signal analyzers, the range of capture sample length is different.

Default: 50000

Set the number of samples the Signal Analyzer captures. This value indicates the number of samples that are used to extract the DPD model. It should be less than the Oversampled Waveform Length value in the Waveform block.