This topic applies to the following instrument models: M9410A VXT, M9411A VXT, and M9415A VXT.
This area comprises immediate, single-action controls common to most instruments.
Click this button to send the parameters to the connected instrument.
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SCPI Command |
[:SOURce]:RADio:<app>:PLAYback:VXT:UPDate:TO |
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SCPI Example |
RAD:NR5G:PLAY:VXT:UPD:TO |
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State Saved |
No |
Click this button to retrieve the parameters from the connected instrument.
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SCPI Command |
[:SOURce]:RADio:<app>:PLAYback:VXT:UPDate:FROM |
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SCPI Example |
RAD:NR5G:PLAY:VXT:UPD:FROM |
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State Saved |
No |
Click this button to set the signal generator to a factory-defined or user-defined state.
Refer to the signal generator's user's guide for information on setting a user-defined state.
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SCPI Command |
[:SOURce]:RADio:<app>:PLAYback:VXT:PRESet |
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SCPI Example |
RAD:NR5G:PLAY:VXT:PRES |
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State Saved |
No |
Establishes a remote connection to the selected instrument.
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SCPI Command |
[:SOURce]:RADio:<app>:PLAYback:VXT:CONNect |
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SCPI Example |
RAD:NR5G:PLAY:VXT:CONN |
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State Saved |
No |
When the Hardware node is selected in the left pane, common hardware configuration parameters appear here.
Name |
The product name/model of the instrument. The name appears as the instrument node in the left pane of the Hardware screen.
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Number of Hardware Channels |
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.
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Connection State |
Reports whether or not you have remote connection to the instrument.
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Selected |
Reports whether or not you have selected a particular instrument for remote control.
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Address |
Enter the instrument’s IP address or hostname. This parameter is coupled with Address under instrument configuration. See that description for SCPI command. |
When an instrument model is selected in the left pane, configuration parameters pertaining to that instrument appear here.
RF Output Port |
Double-click or use the drop-down menu to select the signal generator's RF output port.
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Frequency |
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.
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Amplitude |
Enter a value to set the signal generator’s output amplitude in dBm.
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RF Output |
Click the checkbox to enable (checkmarked) or disable the RF Output.
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I/Q Adjustments |
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.
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I/Q Delay |
Enter a value (in seconds) to set the I/Q delay with respect to triggers and markers. Set I/Q Adjustments to On to enable this feature.
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I/Q Gain |
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.
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Sample Clock |
The sample clock frequency of the signal generator is automatically calculated by the program. The range depends on the connected instrument.
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Pulse/RF Blank |
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.
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ALC Hold |
Use the drop-down menu to select a marker for ALC hold. Use ALC hold when you have a waveform signal that has idle periods, or when the increased dynamic range with RF blanking is not desired. None – disables ALC hold. Marker 1 through Marker 4 – assigns a marker for the ALC hold function. When the specified marker polarity is positive and the marker signal is low (no marker points), ALC hold is on, and the output power level does not respond to changes to the signal amplitude. When the marker signal is high, the ALC samples the waveform points and averages the waveform amplitudes to set the ALC circuitry for the next ALC hold period. RF blanking incorporates ALC hold, so there is no need to select ALC hold when using RF blanking. Limit ALC Hold to no more than 100 ms, as the ALC Level may degrade. The hold selection remains until you reconfigure it, preset the signal generator, or cycle the signal generator power. Incorrect ALC settings can cause a sudden unleveled condition to occur. An unleveled RF output can damage a DUT or connected instrument. Ensure that you set markers such that the ALC obtains a sample that accounts for the high power levels within the signal.
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Trigger Type |
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.
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Trigger Source |
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.
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External Polarity |
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.
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External Delay |
Click the checkbox to enable (checkmarked) or disable the external trigger delay. This parameter is active only after selecting External as the trigger source.
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External Delay Time |
Sets a delay time (in seconds) between when an external trigger is received and when it is applied to the waveform.
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Continuous |
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.
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Single |
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.
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Select PXI Line |
Select a PXI line.
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PXI Trigger Polarity |
Select the PXI trigger polarity.
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PXI Trigger Delay |
Click the checkbox to enable (checkmarked) or disable the PXI trigger delay.
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PXI Trigger Delay Time |
Sets a delay time (in seconds) between when a PXI trigger is received and when it is applied to the waveform.
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