RF Output Block

Tab	N5186A N5185A
General	RF Out (All) RF Out RF Output Block Frequency (CW) Frequency Increment Fast Frequency Phase Transition Mode Phase Power Mode Power (Total RMS) Fast Power Fast Frequency and Power Peak Envelope Power User Power Limit On/Off User Power Limit Attenuation Hold Mode RF Output Block Attenuation - Hold [Auto] Perform Spot Correction Spot Correction Termination Channel Gain Overview Channel Gain Power Headroom Channel Gain Power Headroom Auto Channel Gain Power Reference Channel Gain Power Reference Auto
Frequency and Amplitude Adjustment	Frequency Offset Frequency Offset State Frequency Multiplier Frequency Reference On/Off Frequency Reference Value Set Reference to Current Frequency Amplitude Offset Amplitude Reference On/Off Amplitude Reference Value Set Reference to Current Amplitude
Corrections/De-embedding	This link opens a separate topic.
Optimizations	This link opens a separate topic.
List/Step Sweep	This link opens a separate topic.
Frequency List/Sweep	Frequency Center (Remote command only) Frequency Span (Remote command only) Frequency Start Frequency Stop

Turns the RF outputs on or off for all the channels in the instrument. This is a master control that gates the individual states. If this control is off, no RF power is emitted from any of the channels; however, the individual channels retain the state of their setting. If this control is on, the RF outputs are on if their individual state is on. To enable or disable individual channels see RF Out.

General

RF Out

Enables or disables the RF output of the indicated channel. To enable or disable all channels see RF Out (All).

Frequency Mode

Frequency (CW)

When Frequency List/Step Sweep is on, changing the frequency sets the Frequency List/Step Sweep off.

Frequency Increment

Controls the incremental step value of the indicated channel for the Frequency CW or Fixed parameters. The value set with this command is not affected by *RST or a power cycle. It is reset to the default value with Restore System Defaults.

Fast Frequency

Remote command only.

Sets the instrument’s frequency with the maximum throughput. As the purpose of this command is for speed, there is no limit checking, no coupling, and no update of the value on the front panel. When using this command, there is no inclusion of frequency offset, multiplier, or frequency reference. The value is an integer frequency in 10 uHz resolution. No error message is raised if the value is clipped.

SCPI Command	FAST<channel>:FREQuency <integer>
SCPI Example	FAST:FREQ 300000000000000
Notes	This command performs no coupling, does not support UP, DOWN, MIN, MAX, DEF. The value is an integer in 10 uHz; no HZ, KHZ, MHZ, GHZ units are allowed.
State Saved	No
Min	For N5185A/N5186A: 900000000
Max	For N5185A/N5186A: With Option 503 = 300000000000000 With Option 506 = 600000000000000 With Option 508 = 850000000000000
Resolution	10 uHz

Phase Transition Mode

Applies to the N5186A only.

Phase Transition pertains to the N5186A MXG with Option PCH.

This control selects the behavior of the phase across frequency changes.

Transition Mode of Continuous attempts to minimize spectral splatter on frequency transitions by maintaining the same phase across the point of the switch.
Transition Mode of Coherent causes the instrument to act as if all frequencies were generated by independent transmitters that are pulsed on and off; resulting in the phase of any given frequency will always reflect the same phase ramp over time, even if the source has changed to other frequencies in between.
Undefined means that the phase transition has no guaranteed phase behavior.
Reset will reset the phase to the Phase Offset on any frequency change.

GUI Location	RF Output > Phase Transition Mode
SCPI Command	[:SOURce][:RF<channel>]:PHASe:MODE CONTinuous\|COHerent\|UNDefined\|RESet\|MCOHerent [:SOURce][:RF<channel>]:PHASe:MODE?
SCPI Example	PHAS:MODE CONT PHAS:MODE?
Notes	For N5186A without Option PCH, the value is Continuous and not changeable. Error message raised if user attempts to set value to HW that doesn’t provide it. For N5186A with Option PCH, the default value changes with instrument configuration: For Independent, default is Coherent For Tx Coherent, default is Continuous
Preset	For N5186A with Option PCH: Coherent For /N5186A without Option PCH: Continuous
State Saved	Yes

Phase

With Option PCH, this parameter allows you to set the relative phase angle of each RF Channel relative to each other output.

For N5185A MXG and N5186A MXG, when in "Tx Coherent", this parameter allows you to set the relative phase angle of the channels consumed by the Group relative to one another.

Power Mode

Sets the amplitude mode of the indicated channel to Fixed or List (sweep). Dynamic power value update during Sweep is not supported.

Power (Total RMS)

This is the value that the instrument attempts to output. The actual value might be different from the specified value due to the hardware limitations. For example, the output power is different when a high power value is specified with Attenuation Auto off (that is, Attenuation Hold on).

When Power Sweep State is ON, changing the power sets the Power Sweep State to OFF.

Fast Power

Sets the instrument’s power with the maximum throughput. As the purpose of this command is for speed, there is no limit checking, no coupling, and no update of the value on the front panel. When using this command, there is no inclusion of amplitude offset or amplitude reference. The value is a floating point number in dBm. No error message is raised if the value is clipped.

Fast Frequency and Power

Sets the instrument’s frequency and power with the maximum throughput. As the purpose of this command is for speed, there is no limit checking, no coupling, and no update of the value on the front panel. When using this command, there is no inclusion of frequency offset, multiplier, frequency reference, amplitude offset, or amplitude reference. The value is an integer frequency in 10 uHz resolution. No error message is raised if the value is clipped.

Peak Envelope Power

User Power Limit On/Off

Controls the maximum output power limit of the indicated channel. The value set with this command is not affected by *RST or a power cycle. It is reset to the default value with Restore System Defaults.

User Power Limit

Sets the maximum output power level for the indicated channel that is lower than the instrument’s normal maximum output power. This affects all modes of power operation. This affects the Amplitude value, but features such as AM may allow the power to exceed the Amplitude value. In other words, this is not a hardware power clamp. The value is not affected by recall, *RST, Preset or a power-cycle. It is reset to the default value with Restore System Defaults.

Attenuation Hold Mode

Enabling attenuation hold (Hold checkbox is marked in the GUI) turns off automatic attenuation and allows you to select one of two possible RF Output behaviors in the Attenuation Hold Mode drop-down menu: Output and All.

Attenuation Hold Mode	Description	Summary
Output	Holds only the output attenuators but allows non-output attenuators to change. Output attenuators are defined as those that, when changed, affect the source match and have the potential to introduce some discontinuity on power changes when not held. They are also distinct in that they are selected based on mode, requested power and frequency only and have no dependency on signal level coming from the DAC. Changing non-output attenuation can result in small discontinuities.	Power Reference Auto is overridden to off Changing RF Power may change non-output attenuators Changing Power Reference will change attenuators Changing the Power Headroom will not change output attenuators Note: depending on the hardware, holding output attenuators can be enough to avoid any power discontinuities, but only with ALC or some other form of power correction on.
All	Holds all attenuators, avoiding all attenuation-based discontinuities at the cost of dynamic range.	Power Reference Auto is overridden to off Changing RF Power will not change any attenuators Changing Power Reference will change attenuators RF Power adjustment range is "excess" headroom for higher power, as it is consuming the digital scale. Changing the Power Headroom can change attenuators

Attenuation - Hold [Auto]

Turns the output Attenuation Hold function off or on. Because this function and automatic attenuation are coupled, enabling one function disables the other. When Hold is off (checkbox cleared), Auto is on; when Hold is on, Auto is off. The GUI enables or disables the Hold function, while the SCPI command enables or disables the Auto function. In other words, the GUI and SCPI selections achieve the same result with opposite settings, as outlined in the table below.

You can use the Attenuation Hold function to eliminate power level transients that can occur with attenuator switching.

GUI	SCPI	Description
	POW:ATT:AUTO ON	The attenuator setting is automatically changed as needed to maintain the RF output power level. Attenuation Hold is Off Attenuation Auto is On Power Reference Auto is under user control See Attenuation Hold Mode for details
	POW:ATT:AUTO OFF	The attenuator remains at its current setting. Attenuation Hold is On Attenuation Auto is Off Power Reference Auto is overridden to off See Attenuation Hold Mode for details

Perform Spot Correction

For N5185A/N5186A, a correction can be performed to obtain the highest accuracy for the power delivered from the instrument. The correction occurs for the currently selected settings of the instrument, e.g. frequency, power, etc. Thus, a spot correction should be performed whenever the settings of the instrument are changed. This is an immediate action, pressing the button or sending the SCPI command invokes the correction immediately. You do not need to change the cabling between the instrument and your device, or connect a 50 ohm load, prior to invoking the correction.

Click the

icon displayed with the Perform Spot Correction button to see the allowed frequencies and power levels for which spot correction is available on your instrument. The allowed frequencies and power levels for spot correction is based on the firmware with which your instrument is calibrated. Refer to Notes row below for details.

Spot Correction Termination

The spot correction provides capability to perform the correction for termination to an ideal 50 ohm load or to your measurement setup impedance match (incident to current load).

Channel Gain Overview

The Channel Gain is the instrument’s digital and analog setup to achieve a particular power with an input, such as a waveform. There are two settings for the Channel Gain: Power Headroom and Power Reference. See Figure: Determining Instrument’s Channel Gain Setup. When Channel Gain Power Headroom Auto is on, the Channel Gain Power Headroom is automatically set to the crest factor (after runtime scaling) of the waveform(s) being played. When Channel Gain Power Reference Auto is on, the Channel Gain Power Reference is the RF Power.

Adjusting the power headroom or power reference allows for selecting a particular setup across a range of powers or for optimizations when the instrument does not know the best optimization point. These settings accomplish the same function as Attenuator Hold in other Keysight Technologies signal generators.

The channel gain power headroom must be at or above the total crest factor of all combined signals, including AWGN and CW interferers, to avoid a DAC overflow. When Auto is on, the system will set this value to the combined crest factors (after runtime scaling). The larger this value is, the less likely that summed signals will run out of power or have an arithmetic overflow, but less dynamic range will be available.

See Figure: Power Gain vs Signal Power to understand how a particular signal’s power relates to the static instrument setup set by the channel gain power settings. The headroom sets the amount of digital back-off from full-scale CW. The channel gain reference power Pref sets the optimized gain. These two values determine the maximum peak power. Digital Scale is the dynamic power control applied in the instrument’s DSP to get the appropriate power given the requested power of the signal to play and its crest factors. The crest factors are determined implicitly for internally generated waveforms, or explicitly using the rms of the waveform(s).

Channel Gain Power Headroom

The reference headroom sets the amount of digital back-off from full-scale CW. This value must be at or above the total crest factor of all combined signals to avoid overflow. The larger this value is, the less likely that summed signals will run out of power or have an arithmetic overflow, but less dynamic range will be available. See Channel Gain Overview.

GUI Location	RF Output > General tab > Channel Gain Headroom
SCPI Command	[:SOURce][:RF<channel>]:POWer:CGAin:HEADroom <rel_ampl> [:SOURce][:RF<channel>]:POWer:CGAin:HEADroom?
SCPI Example	POW:CGA:HEAD 10DB POW:CGA:HEAD?
Notes	For values larger than 20 dB, the system may not be capable of delivering maximum specified power.
Dependencies	When this value is set, Channel Gain Power Headroom Auto is set to off.
Preset	0 dB
State Saved	Y
Min	0 dB
Max	100 dB
Resolution	0.01 dB

Channel Gain Power Headroom Auto

When in auto mode, the Power Headroom is the crest factor of the waveform(s) being played, if known. When in CW mode (no modulation), the headroom is 0 dB. See Channel Gain Overview.

GUI Location	RF Output > General tab > Channel Gain Headroom Auto
SCPI Command	[:SOURce][:RF<channel>]:POWer:CGAin:HEADroom:AUTO ON\|OFF\|1\|0 [:SOURce][:RF<channel>]:POWer:CGAin:HEADroom:AUTO?
SCPI Example	POW:CGA:HEAD:AUTO ON POW:CGA:HEAD:AUTO?
Notes	When this feature is turned off, the automatic values are retained.
Preset	ON
State Saved	Y

Channel Gain Power Reference

This value is the optimized power level for purposes of power control. This follows RF Power when Auto is on. See Channel Gain Overview.

Channel Gain Power Reference Auto

Frequency and Amplitude Adjustment

Tap or click within this area of the GUI to access the Frequency and Amplitude Adjustment Setup screen, where you can configure these parameters. Once you complete your configuration, click or tap Back and this area updates to reflect your custom configuration.

Frequency Offset

Adds an offset value to the frequency of the indicated channel. The actual RF output frequency is not changed by this setting. The offset is applied after the Frequency Multiplier is applied to the frequency. When an offset has been entered, the OFFS indicator is turned on in the Frequency area of the display (top center of the display). The frequency offset state is turned on when any non–zero value is entered; entering zero will turn it off.

Frequency Offset State

Controls state of the Frequency Offset of the indicated channel. The state can be toggled between ON and OFF without affecting the value of the Frequency Offset.

Frequency Multiplier

Scales the frequency of the indicated channel by the specified value. The actual RF output frequency is not changed by this setting. The Frequency Multiplier is applied to the frequency prior to applying the Frequency Offset. When a Frequency Multiplier other than 1.0 has been entered, the MULT indicator is turned on in the Frequency Area (top center) of the display.

Frequency Reference On/Off

Enables or disables the frequency reference mode for the indicated channel. When Frequency Reference mode is on, subsequent frequency parameters are set relative to the reference value.

Frequency Reference Value

Set Reference to Current Frequency

This immediate action sets the current CW output frequency, along with any offset, as a 0 Hz reference value to the indicated channel.

Amplitude Offset

Provides a power offset (in dB) to the actual RF output of the indicated channel. This simulates a power level at a test point beyond the RF OUTPUT connector without changing the actual RF output power. The offset value only affects the displayed amplitude setting. You can enter an offset at any time in either normal operation or amplitude reference mode.

Amplitude Reference On/Off

Enables or disables the amplitude reference mode for the indicated channel. When the amplitude reference mode is on, subsequent amplitude parameters are set relative to the reference value.

Amplitude Reference Value

Set Reference to Current Amplitude

This immediate action sets the current output amplitude, along with any offset, as a 0 dBm reference value to the indicated channel.

Optimizations

Tap or click within this area of the GUI to access the RF Optimizations screen. This area also displays the status of harmonic filters.

Optimizations pertain to the RF Output of the indicated channel. Each optimization may involve a tradeoff in one aspect of instrument performance over another. Care should be taken in choosing an optimization for your measurement use case.

SCPI Command	[:SOURce][:RF<channel>]:FREQuency:MODE FIXed\|CW\|LIST\|SWEep [:SOURce][:RF<channel>]:FREQuency:MODE?
SCPI Example	FREQ:MODE FIX FREQ:MODE?
Notes	SCPI only CW and FIXed: CW is queried when CW or FIXed is set. These choices are synonymous with one another and stops a frequency sweep, allowing the instrument to operate at a set frequency. LIST and SWEep: LIST is queried when LIST or SWEep is set. These choices are synonymous with one another and selects the swept frequency mode. If sweep triggering is set to immediate along with continuous sweep mode, executing the command starts the LIST or STEP frequency sweep.
Couplings	When Frequency Sweep State is set to OFF, Frequency Mode is set to CW. When Frequency Sweep State is set to ON, Frequency Mode is set to List.
Preset	CW
State Saved	Yes
Choices	Fixed \| CW \| List \| Sweep
Backwards Compatibility SCPI	N5182B: [:SOURce]:FREQuency:MODE

SCPI Command	[:SOURce][:RF<channel>]:POWer:MODE FIXed\|LIST\|SWEep [:SOURce][:RF<channel>]:POWer:MODE?
SCPI Example	POW:MODE LIST POW:MODE?
Notes	FIXed: This choice stops an amplitude (power) sweep, allowing the instrument to operate at a set amplitude. LIST and SWEep: LIST is queried when LIST or SWEep is set. These choices are synonymous with one another and selects the amplitude (power) sweep mode. If sweep triggering is set to immediate along with continuous sweep mode, executing the command starts the LIST or STEP amplitude sweep.
Couplings	When Power Sweep State is set to OFF, Power Mode is set to Fixed. When Power Sweep State is set to ON, Power Mode is set to List.
Preset	FIX
State Saved	Yes
Choices	Fixed \| List \| Sweep
Backward Compatibility SCPI	N5182B: [:SOURce]:POWer:MODE

GUI Location	RF Output > General tab > Attenuation [or Attenuation Hold Mode] > Hold
SCPI Command	[:SOURce][:RF<channel>]:POWer:ATTenuation:AUTO ON\|OFF\|1\|0 [:SOURce][:RF<channel>]:POWer:ATTenuation:AUTO?
SCPI Example	POW:ATT:AUTO OFF POW:ATT:AUTO?
Notes	For N5185A/N5186A: Attenuation Auto is On and is not changeable (however, sending the SCPI command does not generate an error.)
Preset (SCPI)	ON (Attenuation Auto)
Preset (GUI)	OFF (Attenuation Hold)
State Saved	Yes
Choices	OFF \| ON

GUI Location	RF Out (All)
SCPI Command	[:SOURce]:RFALl:OUTPut[:STATe] ON\|OFF\|1\|0 [:SOURce]:RFALl:OUTPut[:STATe]?
SCPI Example	RFAL:OUTP OFF RFAL:OUTP?
Preset	ON
State Saved	Yes
Choices	OFF \| ON

GUI Location	RF Output > General tab > Frequency (CW)
SCPI Command	[:SOURce][:RF<channel>]:FREQuency[:CW] <freq> [:SOURce][:RF<channel>]:FREQuency[:CW]?
SCPI Example	FREQ 3 GHZ FREQ?
Preset	1 GHz
State Saved	Yes
Min	For N5185A = 9 kHz For N5186A = 9 kHz
Max	For N5185A / N5186A With Option 503 = 3 GHz With Option 506 = 6 GHz With Option 508 = 8.5 GHz
Resolution	For N5185A: 0.00001 Hz For N5186A: 0.00001 Hz
Backwards Compatibility SCPI	[:SOURce][:RF<channel>]:FREQuency:FIXed !alias command

SCPI Command	[:SOURce][:RF<channel>]:FREQuency[:CW]:STEP[:INCRement] <freq> [:SOURce][:RF<channel>]:FREQuency[:CW]:STEP[:INCRement]? [MAXimum\|MINimum]
SCPI Example	FREQ:STEP 100 MHZ FREQ:STEP?
Dependencies	Default value of 100 kHz is set by Restore System Defaults
Preset	Not changed by Preset
State Saved	No
Min	For N5185A/N5186A: 0.00001 Hz
Max	99 GHz
Range	0.01 Hz to 99 GHz
Resolution	For N5185A/N5186A: 0.00001 Hz

GUI Location	RF Output > General tab > Phase
SCPI Command	[:SOURce][:RF<channel>]:PHASe[:OFFSet] <real> [:SOURce][:RF<channel>]:PHASe[:OFFSet]? [MAXimum\|MINimum]
SCPI Example	PHAS 30 deg PHAS?
Notes	GUI units are degrees. SCPI return values are always in rad. UP/DOWN increment is always 0.01
Preset	0 deg
State Saved	Yes
Range	-180 to 180 deg
Resolution	0.001 deg

GUI Location	RF Output > General tab > Power (Total RMS)
SCPI Command	[:SOURce][:RF<channel>]:POWer[:LEVel][:IMMediate][:AMPLitude] <ampl> [:SOURce][:RF<channel>]:POWer[:LEVel][:IMMediate][:AMPLitude]?
SCPI Example	POW -50 POW?
Notes	The maximum value of this setting is a settable maximum and the datasheet describes actual specified max power that the instruments are capable of.
Dependencies	When the power is clipped to the User Power Limit the error message "Clipped to User Power Limit" is displayed on the GUI or -222; "Data out of range; Clipped to User Power Limit" to SCPI.
Preset	-100 dBm
State Saved	Yes
Min	For N5185A/N5186A: -135 dBm
Max	For N5185A/N5186A: 20 dBm for all frequencies not covered by these options: With Option 1EA: 30 dBm
Resolution	0.01 dBm

SCPI Command	FAST<channel>:POWer <double>
SCPI Example	FAST:POW -50
Notes	This command performs no coupling, does not support UP, DOWN, MIN, MAX, DEF. The value is floating point value in dBm; no DB or DBM units are allowed.
State Saved	No
Min	For N5185A/N5186A: -135.0
Max	For N5185A/N5186A: 20 dBm in all frequencies not covered by the options: With Option 1EA: 30.0
Resolution	0.01

SCPI Command	FAST<channel>:FP <integer>,<double>
SCPI Example	FAST:FP 300000000000000,-50
Notes	This command performs no coupling, does not support UP, DOWN, MIN, MAX, DEF. The frequency value is an integer in 10 uHz, power value is a double in dBm; no HZ, KHZ, MHZ, GHZ, DB, DBM units are allowed. See Fast Frequency section for details of the frequency setting and Fast Powersection for details of the power setting.
State Saved	No

GUI Location	RF Output > General tab > Peak Envelope Power
SCPI Command	[:SOURce][:RF<channel>]:POWer:PEPower?
SCPI Example	POW:PEP?

GUI Location	RF Output > General tab > User Power Limit
SCPI Command	[:SOURce][:RF<channel>]:POWer:USER:ENABle ON\|OFF\|1\|0 [:SOURce][:RF<channel>]:POWer:USER:ENABle?
SCPI Example	POW:USER:ENAB ON POW:USER:ENAB?
Dependencies	Default value of OFF is set by Restore System Defaults
Preset	OFF
State Saved	No

GUI Location	RF Output > General tab > Attenuation Hold Mode
SCPI Command	[:SOURce][:RF<channel>]:POWer:ATTenuation:HOLD:MODE OUTPut\|ALL [:SOURce][:RF<channel>]:POWer:ATTenuation:HOLD:MODE?
SCPI Example	POW:ATT:HOLD:MODE ALL POW:ATT:HOLD:MODE?
Dependencies
Preset	OUTPut
Range	Output\|All
State Saved	Y

GUI Location	RF Output > General tab > Attenuation > Hold
SCPI Command	[:SOURce][:RF<channel>]:POWer:ATTenuation <rel_ampl> [:SOURce][:RF<channel>]:POWer:ATTenuation?
SCPI Example	POW:ATT 50 dB POW:ATT?
Dependencies	Attenuation occurs in fixed values such as 0 dB, 10 dB, 20 dB, 30 dB, etc. Setting a value in between steps will result in the floor of the value. For example, setting an attenuation level of 45 dB will result in 40 dB of attenuation. The minimum attenuation value becomes larger than zero when User Power Limit is turned on and User Power Limit value is lower than 0 dBm. This is because the instrument cannot limit the output power without some amount of attenuation. Even when the attenuation is automatically set by the firmware, the specified power limit might not be achieved.
Notes	For N5185A/N5186A: Attenuation has a fixed value of 70. Sending the SCPI command has no effect, but it does not generate an error.
Preset	70
State Saved	Yes
Range	0 to 70
Resolution	10

GUI Location	RF Output > General tab > Perform Spot Correction
SCPI Command	[:SOURce][:RF<channel>]:POWer:SCORrection
SCPI Example	POW:SCOR
State Saved	No
Notes	Spot correction is available within particular frequency and amplitude ranges. For instruments calibrated with A.13.xx firmware, the ranges are: 800 MHz to 6 GHz: -30.0 dBm to +24.0 dBm 6 GHz to 7 GHz: -20.0 dBm to +24.0 dBm Over 7 GHz: -10.0 dBm to +24.0 dBm For instruments calibrated with A.14.xx or above firmware, the ranges are: 10 MHz to 6 GHz: -30.0 dBm to +24.0 dBm 6 GHz to 7 GHz: -20.0 dBm to +24.0 dBm Over 7 GHz: -10.0 dBm to +24.0 dBm
Modified S/W Revision	A.14.00, Updated ranges of frequency based on calibration.

GUI Location	RF Output > General tab > Spot Correction Termination
SCPI Command	[:SOURce][:RF<channel>]:POWer:SCORrection:TERMination NORMal\|CLOad [:SOURce][:RF<channel>]:POWer:SCORrection:TERMination?
SCPI Example	POW:SCOR:TERM CLO POW:SCOR:TERM?
Preset	NORM
State Saved	Yes

GUI Location	RF Output > General tab > Channel Gain Power Reference
SCPI Command	[:SOURce][:RF<channel>]:POWer:CGAin:REFerence <ampl> [:SOURce][:RF<channel>]:POWer:CGAin:REFerence?
SCPI Example	POW:CGA:REF 0DBM POW:CGA:REF?
Notes	The maximum value of this setting is a settable maximum and the datasheet describes actual specified max power that the instruments are capable of.
Dependencies	When the power is clipped to the User Power Limit the error message "Clipped to User Power Limit" is displayed on the GUI or -222;"Data out of range;Clipped to User Power Limit" to SCPI. When this value is set, Channel Gain Power Reference Auto is set to off.
Preset	-100 dBm
State Saved	Y
Min	-135 dBm
Max	For N5185A and N5186A: 20 dBm in all frequencies not covered by the options: With Option 1EA: 30 dBm
Resolution	0.01 dBm

GUI Location	RF Output > Frequency and Amplitude Adjustment > Frequency Offset
SCPI Command	[:SOURce][:RF<channel>]:FREQuency:OFFSet <freq> [:SOURce][:RF<channel>]:FREQuency:OFFSet?
SCPI Example	FREQ:OFFS 100 MHz FREQ:OFFS?
Preset	0 Hz
State Saved	Yes
Range	-200 to 200 GHz
Resolution	0.001 Hz