SIGLENT TECHNOLOGIES SSA3000X Series Operating instructions

Programming Guide
SSA3000X Series Spectrum Analyzer
PG0703X-E03A
2017 SIGLENT TECHNOLOGIES CO., LTD

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2 SSA3000X Programming Guide
Contents
1. Programming Overview ............................................................3
1.1 Build Communication ............................................................................ 3
1.2 Remote Control Capabilities ................................................................. 6
2. SCPI Overview ...........................................................................7
2.1 Command Format................................................................................... 7
2.2 Symbol Instruction................................................................................. 7
2.3 Parameter Type....................................................................................... 8
2.4 Command Abbreviation ......................................................................... 8
3. System Commands ...................................................................9
3.1 IEEE Common Commands .................................................................... 9
3.2 System Subsystem .............................................................................. 11
3.3 Instrument Subsystem......................................................................... 16
3.4 Initiate Subsystem................................................................................ 17
3.5 Sense Subsystem................................................................................. 17
3.6 Calculate Subsystem ........................................................................... 34
3.7 Measurement Subsystem .................................................................... 51
3.8 Trigger Subsystem ............................................................................... 60
3.9 TG Subsystem ...................................................................................... 61
3.10 Demod Subsystem ............................................................................... 63
3.11 Calibration Subsystem ........................................................................ 65
4. Programming Examples .........................................................66
4.1 Using VISA Examples .......................................................................... 66
4.2 Using Sockets Examples ..................................................................... 74

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SSA3000X Programming Guide 3
1.Programming Overview
SSA3000X Series Spectrum Analyzer support both USB and LAN interfaces. By using
these interfaces, in combination with NI-VISA and programming languages, users can
remotely control the spectrum analyzer. Through LAN interface, VXI-11, Sockets and Telnet
protocols can be used to communicate with the spectrum analyzer. This chapter introduces
how to build communication between the spectrum analyzer and the PC. It also introduces
the remote control capabilities.
1.1 Build Communication
1.1.1 Build Communication Using VISA
1、Install NI-VISA
Before programming, you need to install NI-VISA, which you can download from the NI-VISA
web site. About NI-VISA, there are full version and Run-Time Engine version. The full version
includes the NI device driver and a tool named NI MAX that is a user interface to control the
device. The Run-Time Engine version which is much smaller than the full version only
include NI device driver.
For example, you can get NI-VISA 5.4 full version from: http://www.ni.com/download/ni-visa-
5.4/4230/en/.
You can also download NI-VISA Run-Time Engine 5.4 to your PC and install it as default
selection. Its installation process is similar with the full version.
After you downloaded the file you can follow the steps below to install it:
a.Double click the visa540_full.exe, dialog shown as below:
b.Click Unzip, the installation process will automatically launch after unzipping files. If your
computer needs to install .NET Framework 4, its setup process will auto start.

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c.The NI-VISA installing dialog is shown above. Click Next to start the installation process.
Set the install path, default path is “C:\Program Files\National Instruments\”, you can
change it. Click Next, dialog shown as above.
d.Click Next twice, in the License Agreement dialog, select the “I accept the above 2 License
Agreement(s).”,and click Next, dialog shown as below:

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SSA3000X Programming Guide 5
e.Click Next to run installation.
Now the installation is complete, reboot your PC.
2、Connect the Instrument
Depending on your specific model your spectrum analyzer may be able to communicate with
a PC through the USB or LAN interface. This manual takes the USB as an example. (For
instructions to communicate with a PC through the LAN interface see the User Manual.)
a.Connect the USB Device interface at the rear panel of the spectrum analyzer and the USB
Host interface of the PC using a USB cable. Assuming your PC is already turned on, turn on
your spectrum analyzer and your PC will display the “Device Setup” screen as it
automatically installs the device driver as shown below.
b.Wait for the installation to complete and then proceed to the next step.

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1.1.2 Build Communication Using Sockets
Sockets LAN is a method used to communicate with the spectrum analyzer over the LAN
interface using the Transmission Control Protocol/Internet Protocol (TCP/IP). A socket is a
fundamental technology used for computer networking and allows applications to
communicate using standard mechanisms built into network hardware and operating
systems. The method accesses a port on the spectrum analyzer from which bidirectional
communication with a network computer can be established.
Before you can use sockets LAN, you must select the spectrum analyzer’s sockets port
number to use:
Standard mode. Available on port 5025. Use this port for simple programming.
Telnet mode. The telnet SCPI service is available on port 5024.
1.2 Remote Control Capabilities
1.2.1 User-defined Programming
Users can use SCPI commands to program and control the spectrum analyzer. For details,
refer to the introductions in “Programming Examples”.
1.2.2 Send SCPI Commands via NI-MAX
Users can control the spectrum analyzer remotely by sending SCPI commands via NI-MAX
software.

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2.SCPI Overview
2.1 Command Format
SCPI commands present a hierarchical tree structure containing multiple subsystems, each
of the subsystems is made up of a root keyword and several subkeywords. The command
string usually starts with “:”, the keywords are separated by “:”and the followed parameter
settings are separated by space. Query commands add “?”at the end of the string.
For example:
:SENSe:FREQuency:CENTer <freq>
:SENSe:FREQuency:CENTer?
SENSe is the root key of the command, FREQuency and CENTer are second and third
keywords. The command begins with “:”, and separates the keywords at the same time,
<freq> separated by space and represents the parameter available for setting; “?”represents
a query.
2.2 Symbol Instruction
The following four symbols are not the content of SCPI commands and can not be sent with
the commands, but are usually used in the commands.
1, Triangle Brackets < >
The parameter in the triangle brackets must be replaced by an effective value. For example:
Send the “:DEMod:VOLume <value>”command in “:DEMod:VOLume 5”.
2, Square Brackets [ ]
The content in the square brackets can be ignored. When the parameter is ignored, the
instrument will set the parameter to its default. For example,
In the “[:SENSe]:POWer[:RF]:ATTenuation?”command, sending any of the four commands
below can generate the same effect:
:POWer:ATTenuation?
:POWer:RF:ATTenuation?
:SENSe:POWer:ATTenuation?
:SENSe:POWer:RF:ATTenuation?
3, Vertical Bar |
The vertical bar is used to separate multiple parameters and when sending the command,
you can choose one of the parameters. For example,
In the “[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF|ON|0|1”command, the parameters
available are “OFF”, “ON”, “0”or “1”.
4, Braces { }
The parameters in the braces are optional which can be ignored or set for one or more times.
For example：
:CALCulate:LLINe[1]|2:DATA <x-axis>,<ampl>{,<x-axis>, <ampl>}, in the command, the {,<x-
axis>, <ampl>} parameters can be ignored or set for one or more times.

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2.3 Parameter Type
The parameters in the commands introduced in this manual include 6 types: boolean,
enumeration, integer, float, discrete and string.
1, Boolean
The parameters in the commands could be “OFF”, “ON”, “0”or “1”.For example:
[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF|ON|0|1
2, Enumeration
The parameter could be any of the values listed. For example:
[:SENSe]:AVERage:TYPE LOGPower|POWer|VOLTage
The parameter is “OGPower”, “POWer”or “VOLTage”.
3, String
The parameter should be the combinations of ASCII characters. For example:
:SYSTem:COMMunicate:LAN:IPADdress <“xxx.xxx.xxx.xxx”>
The parameter can be set as “192.168.1.12” string.
4, Integer
Except other notes, the parameter can be any integer within the effective value range. For
example:
[:SENSe]:DEMod:VOLume <value>
The parameter < value > can be set to any integer between 0 and 10.
5, Float
The parameter could be any value within the effective value range according to the accuracy
requirement (the default accuracy contains up to 9 digits after the decimal points). For example:
:CALCulate:BANDwidth:NDB <value>
The parameter < value > can be set to any real number between -100 and 100.
6, Discrete
The parameter could only be one of the specified values and these values are discontinuous. For
example:
[:SENSe]:BWIDth:VIDeo:RATio <number>
The parameter <number> could only be one of 0.001, 0.003, 0.01, 0.03, 0.1, 0.3, 1.0, 3.0, 10.0,
30.0, 100.0, 300.0, 1000.0.
2.4 Command Abbreviation
All of the commands are not case sensitive, so you can use any of them. But if abbreviation
is used, all the capital letters in the command must be written completely. For example:
:DISPlay:WINDow:TRACe:Y:DLINe:STATe?
Can be abbreviated to:
:DISP:WIND:TRAC:Y:DLIN:STAT?

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3.System Commands
This chapter introduces the Siglent Technologies SSA3000X SCPI commands, include:
IEEE Common Commands 3.1
System Subsystem 3.2
Instrument Subsystem 3.3
Initiate Subsystem 3.4
Sense Subsystem 3.5
Calculate Subsystem 3.6
Measurement Subsystem 3.7
Trigger Subsystem 3.8
TG Subsystem 3.9
Demod Subsystem 3.10
Calibration Subsystem 3.11
3.1 IEEE Common Commands
3.1.1 Identification Query (*IDN)
Command
Format
*IDN?
Instruction
Returns an instrument identification information string. The string will contain
the manufacturer, model number, serial number, software number, FPGA
number and CPLD number.
Menu
None
Example
*IDN?
Return: Siglent Technologies,SSA3032,1234567890,100.01.01.06.01
3.1.2 Reset (*RST)
Command
Format
*RST
Instruction
This command presets the instrument to a factory defined condition that is
appropriate for remote programming operation. *RST is equivalent to
performing the two commands :SYSTem:PRESet and *CLS. This command
always performs a factory preset.
Menu
None
Example
*RST
3.1.3 Clear Status (*CLS)
Command
Format
*CLS

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Instruction
Clears the status byte register. It does this by emptying the error queue and
clearing all bits in all of the event registers. The status byte register summarizes
the states of the other registers. It is also responsible for generating service
requests.
Menu
None
Example
*CLS
3.1.4 Standard Event Status Enable (*ESE)
Command
Format
*ESE <number>
*ESE?
Instruction
Set the bits in the standard event status enable register. This register monitors
I/O errors and synchronization conditions such as operation complete, request
control, query error, device dependent error,execution error, command error
and power on. A summary bit is generated on execution of the command.
The query returns the state of the standard event status enable register.
Menu
None
Example
*ESE 16
3.1.5 Standard Event Status Register Query (*ESR)
Command
Format
*ESR?
Instruction
Queries and clears the standard event status event register. (This is a
destructive read.) The value returned reflects the current state (0/1) of all the
bits in the register.
Menu
None
Example
*ESR?
3.1.6 Operation Complete Query (*OPC)
Command
Format
*OPC
*OPC?
Instruction
Set bit 0 in the standard event status register to “1”when all pending operations
have finished.
The query stops any new commands from being processed until the current
processing is complete. Then it returns a “1”, and the program continues. This
query can be used to synchronize events of other instruments on the external
bus.
Returns a “1”if the last processing is complete. Use this query when there’s a
need to monitor the command execution status, such as a sweep execution.
Menu
None
Example
*OPC?
3.1.7 Service Request Enable (*SRE)
Command
Format
*SRE <integer>
*SRE?
Instruction
This command enables the desired bits of the service request enable register.
The query returns the value of the register, indicating which bits are currently
enabled. The default value is 255.
Menu
None
Example
*SRE 1

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3.1.8 Status Byte Query (*STB)
Command
Format
*STB
Instruction
This query is used by some instruments for a self test.
Menu
None
Example
*STB
3.1.9 Wait-to-Continue (*WAI)
Command
Format
*WAI
Instruction
This command causes the instrument to wait until all pending commands are
completed before executing any additional commands.
There is no query form to the command.
Menu
None
Example
*WAI
3.1.10 Trigger (*TRG)
Command
Format
*TRG
Instruction
This command initiates a sweep if not in a measurement. If in a measurement,
it triggers the measurement.
Menu
None
Example
*TRG
3.1.11 Self Test Query (*TST)
Command
Format
*TST?
Instruction
This query is used by some instruments for a self test.
Menu
None
Example
*TRG
3.2 System Subsystem
3.2.1 System Time (:SYSTem:TIME)
Command
Format
:SYSTem:TIME <hhmmss>
:SYSTem:TIME?
Instruction
Sets System time.
Gets System time.
Parameter
Type
String
Parameter
Range
hour(0~23), minute(0~59), second(0~59)
Return
String
Default
None
Menu
System > date & time
Example
Sets System time:
:SYSTem:TIME 182559

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Gets System time:
:SYSTem:TIME?
3.2.2 System Date (:SYSTem:DATE)
Command
Format
:SYSTem:DATE <yyyymmdd>
:SYSTem:DATE?
Instruction
Sets system date.
Gets system date.
Parameter
Type
String
Parameter
Range
year(four digits), month(1~12), date(1~31)
Return
String
Default
None
Menu
System > date&time
Example
Sets System date:
:SYSTem:DATE 20050101
Gets System date:
:SYSTem:DATE?
3.2.3 IP Address
(:SYSTem:COMMunicate:LAN:IPADdress)
Command
Format
:SYSTem:COMMunicate:LAN:IPADdress <“xxx.xxx.xxx.xxx”>
:SYSTem:COMMunicate:LAN:IPADdress?
Instruction
Sets a host name for the analyzer in network.
Gets IP address.
Parameter
Type
String
Parameter
Range
Conform to the IP Sets standard(0-255:0-255:0-255:0-255)
Return
IP adress String
Default
None
Menu
System > Interface > LAN > IP Address
Example
:SYSTem:COMMunicate:LAN:IPADdress “192.168.1.12”
:SYSTem:COMMunicate:LAN:IPADdress?
3.2.4 Gateway (:SYSTem:COMMunicate:LAN:GATeway)
Command
Format
:SYSTem:COMMunicate:LAN:GATeway <“xxx.xxx.xxx.xxx”>
:SYSTem:COMMunicate:LAN:GATeway?
Instruction
Sets the gateway for the analyzer in the network. The gateway will be
fetched automatically if the IP assignment is set to DHCP.
Gets gateway.
Parameter
Type
String
Parameter
Range
Conform to the IP standard (0-255:0-255:0-255:0-255)
Return
gateway string.
Default
None
Menu
System > Interface > LAN > Gateway
Example
:SYSTem:COMMunicate:LAN:GATeway “192.168.1.1”
:SYSTem:COMMunicate:LAN:GATeway?

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3.2.5 Subnet Mask
(:SYSTem:COMMunicate:LAN:SMASk)
Command
Format
:SYSTem:COMMunicate:LAN:SMASk <“xxx.xxx.xxx.xxx”>
:SYSTem:COMMunicate:LAN:SMASk?
Instruction
Sets the subnet mask according to the PC network Settings. The subnet mask
will be set automatically if the IP assignment is set to DHCP.
Parameter
Type
String
Parameter
Range
Conform to the IP standard (0-255:0-255:0-255:0-255)
Return
Subnet mask string
Default
None
Menu
System > Interface > LAN > Subnet Mask
Example
:SYSTem:COMMunicate:LAN:SMASk?
3.2.6 IP Config (:SYSTem:COMMunicate:LAN:TYPE)
Command
Format
:SYSTem:COMMunicate:LAN:TYPE STATIC|DHCP
:SYSTem:COMMunicate:LAN:TYPE?
Instruction
Toggles the IP assignment Setting between static (manual) and DHCP
(dynamic assignment) mode.
Gets IP config.
Parameter
Type
Enumeration
Parameter
Range
STATIC|DHCP
Return
Enumeration
Default
None
Menu
System > Interface > LAN > IP Config
Example
:SYSTem:COMMunicate:LAN:TYPE DHCP
:SYSTem:COMMunicate:LAN:TYPE?
3.2.7 Language (:SYSTem:LANGuage)
Command
Format
:SYSTem:LANGuage SCHINESE|ENGLISH
:SYSTem:LANGuage?
Instruction
Sets language.
Gets language.
Parameter
Type
Enumeration
Parameter
Range
SCHINESE: Chinese
ENGLISH: English
Return
Enumeration
Default
None
Menu
System > Language
Example
Sets language
:SYSTem:LANGuage SCHINESE
Gets language
:SYSTem:LANGuage?

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3.2.8 Power On Type (:SYSTem:PON:TYPE)
Command
Format
:SYSTem:PON:TYPE DFT|LAST|USER
:SYSTem:PON:TYPE?
Instruction
Uses command to set analyzer to power on in default, user, or last state.
Gets power on type.
Parameter
Type
Enumeration
Parameter
Range
DFT: Default
LAST: Last
USER: Custom Configuration
Return
Enumeration
Default
DFT
Menu
System > Pwr/Preset > Power On
Example
SYSTem:PON:TYPE DFT
3.2.9 System Preset (:SYSTem:PRESet )
Command
Format
:SYSTem:PRESet
Instruction
Use this command to preset the instrument. The preset type is based on the
Setting of Preset Type: DFT, User or Last.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
None
Example
:SYSTem:PRESet
3.2.10 Preset Type (:SYSTem:PRESet:TYPE)
Command
Format
:SYSTem:PRESet:TYPE DFT|LAST|USER
:SYSTem:PRESet:TYPE?
Instruction
Uses this command to preset the analyzer to default, user, or last state.
Gets preset type.
Parameter
Type
Enumeration
Parameter
Range
DFT: Default
LAST: Last
USER: Custom Configuration
Return
Enumeration
Default
DFT
Menu
System > Pwr/Preset > Preset
Example
:SYSTem:PRESet:TYPE DFT
3.2.11 Factory ReSet (:SYSTem:FDEFault)
Command
Format
:SYSTem:FDEFault
Instruction
Sets both the measure and setting parameters to factory preset parameters.
Parameter
Type
None

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Parameter
Range
None
Return
None
Default
None
Menu
System > Pwr/Preset > Factory Reset
Example
:SYSTem:FDEFault
3.2.12 Enable Option (:SYSTem:LKEY)
Command
Format
:SYSTem:LKEY <“option”>,<“license key”>
Instruction
Use this command to enable the specified option with the license key.
Parameter
Type
“option”: Enumeration
“license key”: String
Parameter
Range
“option”: Meas|EMI|CAT|TG
“license key”: provided by Siglent Technologies, 16 bits String.
Return
None
Default
None
Menu
System > System Info > Load Option
Example
:SYSTem:LKEY EMI,fjbdajffnklmgwno
3.2.13 Installed Options Query (:SYSTem:OPTions?)
Command
Format
:SYSTem:OPTions?
Instruction
This command returns a list of the options that are installed.
Parameter
Type
None
Parameter
Range
None
Return
Meas| EMI|CAT|TG
Default
None
Menu
System > System Info
Example
:SYSTem:OPTions?
3.2.14 Power Off (:SYSTem:PORT:OFF)
Command
Format
:SYSTem:POWer:OFF
Instruction
Use this command to turn off the instrument.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
None
Example
:SYSTem:POWer:OFF
3.2.15 System Info (:SYSTem:CONFigure:SYSTem?)
Command
Format
:SYSTem:CONFigure:SYSTem?
Instruction
Use this command to query the system message of the instrument.

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Parameter
Type
None
Parameter
Range
None
Return
String
Default
None
Menu
System > System Info
Example
:SYSTem:CONFigure:SYSTem?
3.3 Instrument Subsystem
3.3.1 Instrument Mode (:INSTrument[:SELect])
Command
Format
:INSTrument[:SELect] SA|EMI|CAT
:INSTrument[:SELect]?
Instruction
Sets instrument mode.
Parameter
Type
Enumeration
Parameter
Range
SA: Spec Analyzer
EMI: EMI
CAT: Reflection Meas
Return
Enumeration
Default
SA
Menu
mode
Example
:INSTrument CAT
3.3.2 Measure Mode (:INSTrument:MEASure)
Command
Format
:INSTrument:MEASure
OFF|ACPR|CHPower|OBW|TPOWer |SPECtrogram|TOI
:INSTrument:MEASure?
Instruction
Sets measure mode.
Gets measure mode.
Parameter
Type
Enumeration
Parameter
Range
OFF: measure off
ACPR: ACPR
CHPower: Channel Power
OBW: Occupied BW
TPOWer: T-POWer
SPECtrogram: Spectrogram Monitor
TOI: Third-order Intercept Point
Return
Enumeration
Default
OFF
Menu
Measure
Example
:INSTrument:MEASure ACPR

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3.4 Initiate Subsystem
3.4.1 Single Sweep (:INITiate[:IMMediate])
Command
Format
:INITiate[:IMMediate]
Instruction
Sets single sweep.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
Sweep > Single
Example
:INITiate:IMMediate
3.4.2 Continuous or Single Sweep
(:INITiate:CONTinuous)
Command
Format
:INITiate:CONTinuous OFF|ON|0|1
:INITiate:CONTinuous?
Instruction
Sets continuous sweep mode on-off.
Gets continuous sweep mode state.
Parameter
Type
Boolean
Parameter
Range
OFF|ON|0|1
Return
0|1
Default
ON
Menu
Sweep > Sweep Mode
Example
:INITiate:CONTinuous OFF
3.5 Sense Subsystem
3.5.1 Frequency Subsection
3.5.1.1 Center Frequency ([:SENSe]:FREQuency:CENTer)
Command
Format
[:SENSe]:FREQuency:CENTer <freq>
[:SENSe]:FREQuency:CENTer?
Instruction
Sets the center frequency of the spectrum analyzer.
Gets the center frequency.
Parameter
Type
Float, unit: Hz, KHz, MHz, GHz
Parameter
Range
50 Hz~3.199999950 GHz(2.999999950 GHz, 2.099999950 GHz, 1.799999950
GHz, 1.499999950 GHz, 0.999999950 GHz)
Zero Span: 0~3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Return
Float, unit: Hz

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Default
1.6 GHz(1.5 GHz, 1.05 GHz, 0.9 GHz, 0.75 GHz, 0.5 GHz)
Menu
Frequency > Center Frequency
Example
:FREQuency:CENTer 0.2 GHz
3.5.1.2 Start Frequency ([:SENSe]:FREQuency:STARt)
Command
Format
[:SENSe]:FREQuency:STARt <freq>
[:SENSe]:FREQuency:STARt?
Instruction
Sets the start frequency of the spectrum analyzer.
Gets the start Frequency.
Parameter
Type
Float, unit: Hz, KHz, MHz, GHz
Parameter
Range
0 Hz~3.199999900 GHz(2.999999900 GHz, 2.099999900 GHz, 1.799999900
GHz, 1.499999900 GHz, 0.999999900 GHz)
Zero Span: 0~3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Return
Float, unit: Hz
Default
0 Hz
Menu
Frequency > Start Frequency
Example
:FREQuency:STARt 100 Hz
3.5.1.3 Stop Frequency ([:SENSe]:FREQuency:STOP)
Command
Format
[:SENSe]:FREQuency:STOP <freq>
[:SENSe]:FREQuency:STOP?
Instruction
Sets the stop frequency of the spectrum analyzer.
Gets the stop frequency.
Parameter
Type
Float, unit: Hz, KHz, MHz, GHz
Parameter
Range
100 Hz~3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Zero Span: 0~3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Return
Float, unit: Hz
Default
3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Menu
Frequency > Stop Frequency
Example
:FREQuency:STOP 1.0 GHz
3.5.1.4 Center Frequency Step
([:SENSe]:FREQuency:CENTer:STEP[:INCRement])
Command
Format
[:SENSe]:FREQuency:CENTer:STEP[:INCRement] <freq>
[:SENSe]:FREQuency:CENTer:STEP[:INCRement]?
Instruction
Specifies the center frequency step size.
Gets the center frequency step.
Parameter
Type
Float, unit: Hz, KHz, MHz, GHz
Parameter
Range
1 Hz~3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Return
Float, unit: Hz
Default
320 MHz(300 MHz, 210 MHz, 180 MHz, 150 MHz, 100 MHz)
Menu
Frequency > Freq Step
Example
:FREQuency:CENTer:STEP 2 MHz

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SSA3000X Programming Guide 19
3.5.1.5 Center Frequency Step Mode
([:SENSe]:FREQuency:CENTer:STEP:AUTO)
Command
Format
[:SENSe]:FREQuency:CENTer:STEP:AUTO OFF|ON|0|1
[:SENSe]:FREQuency:CENTer:STEP:AUTO?
Instruction
Specifies whether the step size is set automatically based on the span.
Gets center frequency step mode.
Parameter
Type
Boolean
Parameter
Range
OFF|ON|0|1
Return
0|1
Default
ON
Menu
Frequency > Freq Step
Example
:FREQuency:CENTer:STEP:AUTO OFF
3.5.1.6 Sets CF→Step ([:SENSe]:FREQuency:CENTer:SET:STEP)
Command
Format
[:SENSe]:FREQuency:CENTer:SET:STEP
Instruction
Sets step value equal to center frequency.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
Frequency > CF→Step
Example
:FREQuency:CENTer:SET :STEP
3.5.1.7 Frequency Span ([:SENSe]:FREQuency:SPAN)
Command
Format
[:SENSe]:FREQuency:SPAN <freq>
[:SENSe]:FREQuency:SPAN?
Instruction
Sets the frequency span. Setting the span to 0 Hz puts the analyzer into zero
span.
Gets span value.
Parameter
Type
Float, unit: Hz, KHz, MHz, GHz
Parameter
Range
0 Hz, 100 Hz ~ 3.2GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Return
Float, unit: Hz
Default
3.2 GHz(3.0 GHz, 2.1 GHz, 1.8 GHz, 1.5 GHz, 1.0 GHz)
Menu
Span > Span
Example
:FREQuency:SPAN 1 GHz
3.5.1.8 Full Span ([:SENSe]:FREQuency:SPAN:FULL)
Command
Format
[:SENSe]:FREQuency:SPAN:FULL
Instruction
Sets the frequency span to full scale.
Parameter
None

SIGLENT
20 SSA3000X Programming Guide
Type
Parameter
Range
None
Return
None
Default
None
Menu
Span > Full Span
Example
:FREQuency:SPAN:FULL
3.5.1.9 Zero Span ([:SENSe]:FREQuency:SPAN:ZERO)
Command
Format
[:SENSe]:FREQuency:SPAN:ZERO
Instruction
Sets the frequency span to zero span.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
Span > Zero Span
Example
:FREQuency:SPAN:ZERO
3.5.1.10 Last Span ([:SENSe]:FREQuency:SPAN:PREVious)
Command
Format
[:SENSe]:FREQuency:SPAN:PREVious
Instruction
Sets the frequency span to the previous span setting.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
Span > Last Span
Example
:FREQuency:SPAN:PREVious
3.5.1.11 Zoom In ([:SENSe]:FREQuency:SPAN:DOUBle)
Command
Format
[:SENSe]:FREQuency:SPAN:DOUBle
Instruction
Sets the frequency span to half of the previous span setting.
Parameter
Type
None
Parameter
Range
None
Return
None
Default
None
Menu
Span> Zoom In
Example
:FREQuency:SPAN:DOUBle