X-Series Signal Generator

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RAD:NR5G:PLAY:XSG:UPD:TO

No

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RAD:NR5G:PLAY:XSG:UPD:FROM

No

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RAD:NR5G:PLAY:XSG:PRES

No

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RAD:NR5G:PLAY:XSG:DC:CAL

No

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RAD:NR5G:PLAY:XSG:GTL

No

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RAD:NR5G:PLAY:XSG:ALC:SEAR

Yes

[:SOURce]:RADio:<app>:PLAYback:XSG:CONNect

RAD:NR5G:PLAY:XSG:CONN

No

The product name/model of the instrument. The name appears as the instrument node in the left pane of the Hardware screen.

Enter the number of channels for a specific instrument model. For multiple channels, the first instrument listed will become the primary. The others will be secondary.

If enabled, two or more XSG instruments operate in normal MIMO mode with baseband generators synchronized.

Otherwise, all instruments work independently, waiting for a trigger signal to play back waveform once armed.

This setting only works when more than one XSG instrument is configured.

Reports whether or not you have remote connection to the instrument.

Reports whether or not you have selected a particular instrument for remote control.

Enter the instrument’s IP address or hostname.

Displays the instrument model.

Enter a value to set the signal generator’s output frequency. Use abbreviations for faster entry (example: 1g = 1.000000000000 GHz).

For frequency range values, see the instrument's data sheet.

Enter a value to set the signal generator’s output amplitude in dBm.

Click the checkbox to enable (checkmarked) or disable internal channel correction.

Click the checkbox to enable (checkmarked) or disable the I/Q Adjustments.

On – The values entered for I Offset, Q Offset, and so on are applied to the I and Q signals.

Off – I/Q adjustment values are not applied to the I and Q signals.

Enter a DC offset value (in percent) to apply to the I signal before the I/Q modulator. Use this offset to remove imperfections in the in-phase signal or to introduce calibrated impairments.

When using this setting to minimize the LO feed-through signal, optimum performance is achieved when the adjustment is made after any other I/Q path adjustments. If other adjustments are made after minimization is performed, the LO feed-through signal may increase.

Set I/Q Adjustments to On to enable this parameter.

Enter a DC offset value (in percent) to apply to the Q signal before the I/Q modulator. Use this offset to remove imperfections in the in-phase signal or to introduce calibrated impairments.

When using this setting to minimize the LO feed-through signal, optimum performance is achieved when the adjustment is made after any other I/Q path adjustments. If other adjustments are made after minimization is performed, the LO feed-through signal may increase.

Set I/Q Adjustments to On to enable this parameter.

Enter a gain ratio (in dB), by which I gain exceeds Q gain.

For example, if you enter a value of 1 dB, the I signal will have 1 dB more amplitude than the Q signal. Use the gain balance to remove imperfections in I and Q or introduce calibrated impairments.

Set I/Q Adjustments to On to enable this parameter.

Enter a value (in degrees) to adjust the Q phase angle. When the quadrature skew is zero, the phase angle between the I and Q vectors is 90 degrees. Positive skew increases the angle from 90 degrees; negative skew decreases the angle from 90 degrees.

Set I/Q Adjustments to On to enable this parameter.

Sets the time delay (in seconds) between I and Q. A positive value delays the I signal relative to the Q signal, and a negative value delays the Q signal relative to the I signal.

Enter a value to change the absolute phase of both I and Q with respect to triggers and markers. A positive value delays I and Q. This value affects both the external I/Q out signals and the baseband signal modulated on the RF output. This adjustment cannot be used with constant envelope modulation and does not affect external I/Q inputs.

Set I/Q Adjustments to On to enable this parameter.

Click the checkbox to enable (checkmarked) or disable the automatic level control (ALC).

On – The ALC circuit constantly monitors and controls the output power level.

Off – No automatic leveling occurs.

Use the drop-down menu to select a fixed or modulation reference signal when doing a power search.

RMS − power search uses DC bias that is equivalent to the value derived from the file header or the calculated value from the current I/Q data.

Fixed − power search uses a fixed DC bias value.

Manual − power search allows the user to specify the DC bias voltage.

Modulated − power search uses the AC bias from the actual modulating signal.

Runtime Scaling adjusts the scaling of the I and Q data. Reducing the runtime scaling prevents the over ranges from happening. Runtime scaling is also used to scale signals relative to each other.

Select the mode of the internal I/Q modulator.

Manual − manually set the attenuation level of the I/Q modulator using the Modulation Attenuation cell.

Auto − the attenuation level automatically sets to a value for best performance based on the digital modulation settings.

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 Manual to enable this parameter.

Use the drop-down menu to select an RF blanking function.

None – disables RF blanking.

Marker 1 through Marker 4 – selects a marker to activate RF blanking.

Pulse/RF Blanking turns off the RF output signal during specific conditions determined by the marker.

RF blanking incorporates ALC hold, so you do not need to select ALC hold when using RF blanking.

Do not blank longer than 100 ms to avoid exceeding the ALC hold limit.

Use the drop-down menu to select the triggering mode.

Continuous – selects the continuous triggering mode, which enables the signal generator to repeat the modulating signal indefinitely until you turn off the modulation format, change triggers, or select another waveform.

Single – sets up a waveform to play once after receiving a trigger.

Gated – sets the signal generator to the gated trigger mode, which causes the waveform (modulating signal) to repeatedly start and stop in response to an externally applied trigger signal. To use the gated trigger mode, you must select External as the Trigger Source.

Segment Advance – controls the way the signal generator plays segments within a sequence. This includes determining whether a segment plays once or continuously, and when the sequence advances to the next segment.

Adjusts the trigger source applied to the PATT TRIG IN or AUX I/O connectors.

External (EXT) – enables you to trigger a waveform with an externally supplied trigger signal.

Bus (BUS) – enables you to trigger a waveform by sending a command through the GPIB, LAN, or AUXILIARY IO (RS-232) input connector.

Trigger Key (KEY) – selects the front panel hardkey as the trigger source. After making this selection, press the Trigger hardkey to trigger a waveform.

Immediate (IMM) − enables immediate triggering of the waveform playing.

Selects the rear-panel connector for the external trigger source. This parameter is enabled only if external triggering is selected as the trigger source..

Pattern Trigger In 1 – selects the PATTERN TRIG IN rear-panel BNC connector

Pattern Trigger In 2 – selects the PATTERN TRIG IN 2 (AUXILIARY I/O) rear panel connector

Sets the polarity of the external trigger. This parameter is active only if you select external (Ext) as the trigger source.

Positive – the signal generator triggers an event when it detects a rising edge on the PAT TRIG IN signal.

Negative – the signal generator triggers an event when it detects a falling edge on the PAT TRIG IN signal.

This parameter is active only after selecting External as the trigger source.

Sets a delay time (in seconds) between when an external trigger is received and when it is applied to the waveform.

Use the drop-down menu to select the continuous mode and one of the following trigger responses.

Free Run − immediately triggers when you turn the format on.

Trigger & Run − waits for and starts on the first trigger; ignores subsequent triggers.

Reset & Run − waits for and starts on the first trigger; resets and plays on a subsequent trigger.

Double-click or use the drop-down menu to select the single mode and one of the following trigger responses.

No Retrigger (OFF) – the waveform segment ignores triggers during playback

Buffered Trigger (ON) – causes a waveform to accept a trigger during playback and to restart after the current play finishes.

Restart on Trigger (IMMediate) – causes a waveform to accept a trigger during playback and to restart immediately after receiving a trigger.

Double-click or use the drop-down menu to select the segment advance mode and one of the following trigger responses.

Single – causes a segment to play once and to wait for a trigger before the sequence advances to the next segment.

Continuous – causes a segment to play continuously until receiving another trigger. Upon receiving the trigger, the sequence advances to the next segment, which then plays continuously.

Click the checkbox to enable (checkmarked) or disable adding real-time, non-repeating additive white Gaussian noise (AWGN) to the carrier being modulated by the waveform being played.

Set the carrier power to noise power (C/N) ratio format.

Enter a value (in dB) to set the noise power as a ratio of carrier power to noise power (C/N). Carrier power equals the total modulated signal power before noise is added. When you add noise, the power output from the signal generator does not change; it is the sum of carrier power and the added noise power.

Specifies the bandwidth (in Hz) over which the noise power is integrated for calculating the carrier to noise ratio (the bandwidth of the target carrier).

Sets the flat noise bandwidth (in Hz), which is typically set wider than the carrier bandwidth.