SIGLENT TECHNOLOGIES CO.,LTD SDM3045X Remote Manual
Remote Manual
SDM3045X Digital Mulimeter
RC06034-E01A
2017 SIGLENT TECHNOLOGIES CO.,LTD
SIGLENT Remote Manual
1 SDM3045X
Catalogue
SCPI Command ................................................................................................................................ 2
Introduction to the SCPI Language ........................................................................................... 2
Syntax Conventions .................................................................................................................. 2
Command Separators ................................................................................................................ 3
Using the MIN, MAX and DEF Parameters ............................................................................. 3
Querying Parameter Settings..................................................................................................... 3
IEEE-488.2 Common Commands ............................................................................................. 4
SCPI Parameter Types....................................................................................................................... 5
Command in this Manual .................................................................................................................. 6
1.1 ABORt................................................................................................................................. 6
1.2 FETCh? ............................................................................................................................... 7
1.3 INITiate[:IMMediate] ......................................................................................................... 8
1.4 OUTPut:TRIGger:SLOPe ................................................................................................... 9
1.5 R? ...................................................................................................................................... 10
1.6 READ? .............................................................................................................................. 11
1.7 SAMPle:COUNt ............................................................................................................... 12
1.8 UNIT:TEMPerature {C|F|K} UNIT:TEMPerature? ......................................................... 13
System Command ........................................................................................................................ 14
2.1 CALCulate Subsystem ...................................................................................................... 14
2.2 CALCulate:LIMit Subsystem ........................................................................................... 15
2.3 CALCulate:TRANsform:HISTogram Subsystem ............................................................. 19
2.4 CALCulate:SCALe Subsystem ......................................................................................... 26
2.5 CALCulate:AVERage Subsystem ..................................................................................... 31
2.6 CONFigure Subsystem ..................................................................................................... 35
2.7 DATA Subsystem .............................................................................................................. 44
2.8 MEASure Subsystem ........................................................................................................ 46
2.9 SENSe Subsystem Introduction ........................................................................................ 54
2.10 SYSTem Subsystem ........................................................................................................ 89
2.11 TRIGger Subsystem ........................................................................................................ 91
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SDM3045X 2
SCPI Command
Introduction to the SCPI Language
SCPI (Standard Commands for Programmable Instruments) is an ASCII-based
programming language for test and measurement instruments. SCPI commands use a
hierarchical structure known as a tree system. Associated commands are grouped under
a common node or root, thus forming subsystems. A portion of the SENSe subsystem
illustrates this, below.
SENSe:
VOLTage:
DC:RANGe {<range>|MIN|MAX|DEF}
DC:RANGe? [MINimum | MAXimum | DEFault]
SENSe is the root keyword of the command, VOLTage is a second-level keyword, and DC
is a third-level keyword. A colon ( : ) separates consecutive keywords.
Syntax Conventions
The command syntax format is illustrated below:
VOLTage:DC:RANGe {<range>|MIN|MAX|DEF}
Most commands (and some parameters) are a mixture of upper- and lower-case letters.
The upper-case letters indicate the command's abbreviated spelling, which yields shorter
program lines. For better program readability, use the long form.
For example, consider the keyword VOLTage, above. You can type VOLT or VOLTage in
any combination of upper- or lower-case letters. Therefore, VolTaGe, volt and Volt are all
acceptable. Other forms, such as VOL and VOLTAG, will generate an error.
Braces ( { } ) enclose the parameter choices. The braces are not sent with the
command string.
A vertical bar ( | ) separates parameter choices. For example,
{<range>|MIN|MAX|DEF} in the above command indicates that you can specify a
numeric range parameter, or "MIN", "MAX" or "DEF". The bar is not sent with the
command string.
Angle brackets ( < > ) indicate that you must specify a value for the enclosed
parameter. For example, the above syntax statement shows the <range> parameter
in angle brackets. Do not send the brackets with the command string. You must
specify a value for the parameter (for example "VOLT:DC:RANG 10") unless you
select one of the other options shown in the syntax (for example "VOLT:DC:RANG
MIN").
Optional parameters are enclosed in square brackets ( [ ] ). The brackets are not sent
with the command string. If you do not specify a value for an optional parameter, the
instrument uses a default value.
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Command Separators
A colon ( : ) separates consecutive different levels of keywords.. You must insert a blank
space to separate a parameter from a command keyword. If a command requires more
than one parameter, separate adjacent parameters using a comma:
DATA:REMove?5,1
A semicolon ( ; ) separates commands within the same subsystem and can also
minimize typing. For example, the following string:
TRIG:COUNT 2;SOUR EXT
Equivalent to the following two commands:
TRIG:COUNT 2
TRIG:SOUR EXT
Use a colon and a semicolon to link commands from different subsystems. For example,
in the following example, an error is generated if you do not use both the colon and
semicolon:
TRIG:COUN 2;:SAMP:COUN 2
Using the MIN, MAX and DEF Parameters
For many commands, you can substitute "MIN" or "MAX" in place of a parameter. In some
cases you may also substitute "DEF". For example, consider The following example:
VOLTage:DC:RANGe {<range>|MIN|MAX|DEF}
Instead of selecting a specific value for the <range> parameter, you can substitute MIN to
set the range to its minimum value, MAX to set the range to its maximum value or DEF to
set the range to its default value.
Querying Parameter Settings
You can query the current value of most parameters by adding a question mark ( ? ) to the
command. For example,The following example sets the trigger count to 10
measurements:
TRIG:COUN 10
You can then query the count value by sending:
TRIG:COUN?
You can also query the minimum or maximum count allowed as follows:
TRIG:COUN? MIN
TRIG:COUN? MAX
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SDM3045X 4
IEEE-488.2 Common Commands
The IEEE-488.2 standard defines a set of common commands that perform functions
such as reset, self-test and
status operations. Common commands always begin with an asterisk ( * ), are three
characters in length and may
include one or more parameters. The command keyword is separated from the first
parameter by a blank space. Use a
semicolon ( ; ) to separate multiple commands as shown below:
*RST; *CLS; *ESE 32; *OPC?
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SCPI Parameter Types
The SCPI language defines several data formats to be used in program messages and
response messages.
Numeric Parameters
Commands that require numeric parameters will accept all commonly used decimal
representations of numbers including optional signs, decimal points, and scientific
notation. Special values for numeric parameters such as MIN,MAX and DEF are also
accepted. You can also send engineering unit suffixes with numeric parameters (e.g., M, k,
m or u). If a command accepts only certain specific values, the instrument will
automatically round the input numeric parameters to the accepted values. The following
command requires a numeric parameter for the range value:
VOLTage:DC:RANGe {<range>|MIN|MAX|DEF}
Because the SCPI parser is case-insensitive, there is some confusion over the letter "M"
(or "m"). For your convenience, the instrument interprets "mV" (or "MV") as millivolts,
but "MHZ" (or "mhz") as megahertz. Likewise "MΩ" (or "mΩ") is interpreted as megΩ.
You can use the prefix "MA" for mega. For example, "MAV" is interpreted as megavolts.
Discrete Parameters
Discrete parameters are used to program settings that have a limited number of values
(like IMMediate, EXTernal or BUS). They have a short form and a long form just like
command keywords. You can mix upper- and lower-case letters. Query responses will
always return the short form in all upper-case letters. The following example requires
discrete parameters for the temperature units:
UNIT:TEMPerature{C|F|K}
Boolean Parameters
Boolean parameters represent a single binary condition that is either true or false. For a
false condition, the instrument will accept "OFF" or "0". For a true condition, the instrument
will accept "ON" or "1". When you query a Boolean setting, the instrument will always
return "0" or "1". The following example requires a Boolean parameter:
DISPlay:STATe {ON|1|OFF|0}
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Command in this Manual
1.1 ABORt
Aborts a measurement in progress, returning the instrument to the trigger idle state.
Pameter
Typical Return
(none)
(none)
Abort a measurement in progress:
TRIG:SOUR IMM //Set the trigger source for immediate trigger
TRIG:COUN 10 //Set the trigger source for 10 times
INIT //Set the trigger state for “wait for trigger”
ABOR //Interrupt the measurement
This command may be used to abort a measurement when the instrument is waiting for a
trigger, or for aborting a long measurement or series of measurements.
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1.2 FETCh?
Waits for measurements to complete and copies all available measurements to the
instrument's output buffer. The readings remain in reading memory.
Parameter
Typical Return
(none)
-5.75122019E-04, -5.77518360E-04,
-5.73923848E-04, -5.76020647E-04
Set the trigger source for immediate trigger,the INIT command will instrument in
"waiting for trigger" state, in the immediate trigger condition, measurements will
immediately be triggered and the measurement results are sent to the
measurement of memory. The FETCh? query transfers the measurement from
reading memory to the instrument's output buffer.
TRIG:SOUR IMM //Set the trigger source for immediate trigger
TRIG:COUN 10 //Set the trigger source for 10 times
INIT //Set the trigger state for “wait for trigger”
FETC? //Read the resulting measurement value
The FETch? query does not erase measurements from the reading memory. You can
send the query multiple times to retrieve the same data.
You can store up to 1,000 measurements in the reading memory of theSDM3045x . If
reading memory overflows, new measurements will overwrite the oldest
measurements stored; the most recent measurements are always preserved. No
error is generated, but the Reading Mem Ovfl bit (bit 14) is set in the Questionable
Data Register's condition register (see Status System Introduction).
The instrument clears all measurements from reading memory when the
measurement configuration changes, or when any of these commands is executed:
INITiate
MEASure:<function>?
READ?
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1.3 INITiate[:IMMediate]
Set the trigger state for “wait for trigger”.Measurements will begin when the specified
trigger conditions are satisfied following the receipt of the INITiate command. This
command also clears the previous set of measurements from reading memory.
Parameter
Typical Return
(none)
(none)
Set the trigger source for “wait for trigger”, it can effectively receives the
trigger signal:
TRIG:SOUR BUS //Set the trigger source to trigger bus
TRIG:COUN 10 //Set the trigger source for 10 times
INIT //Set the trigger state for “wait for trigger”
*TRG //Send a trigger signal
FETCh? //After measuring can read the measured memory
Storing measurements in reading memory with INITiate is faster than sending
measurements to the instrument's output buffer using READ? (provided you do not
send FETCh? until done). The INITiate command is also an "overlapped" command.
This means that after executing INITiate, you can send other commands that do not
affect the measurements.
You can store up to 1,000 measurements in the reading memory of the SDM3055x. If
reading memory overflows, new measurements will overwrite the oldest
measurements stored; the most recent measurements are always preserved. No
error is generated, but the Reading Mem Ovfl bit (bit 14) is set in the Questionable
Data Register's condition register (see Status System Introduction).
To retrieve the measurements from the reading memory, use FETCh?. Use
DATA:REMove? or R? to read and erase all or part of the available measurements.
The ABORt command may be used to return to idle.
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1.4 OUTPut:TRIGger:SLOPe {POSitive|NEGative}
OUTPut:TRIGger:SLOPe?
Selects the slope of the voltmeter complete output signal on the rear-panel VM Comp
BNC connector.
Parameter
Typical Return
{POSitive|NEGative}, default NEGative
(none)
Configure DC voltage measurements and make two measurements. The signal
on the rear-panel VM Comp connector will output a positive pulse as each
measurement is completed:
CONF:VOLT:DC 10
SAMP:COUN 2
OUTP:TRIG:SLOP POS
INIT
This parameter is set to its default value after a Factory Reset .
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1.5 R? [<max_readings>]
Reads and erases all measurements from the reading memory up to the specified
<max_readings>. The measurements are read and erased from the reading memory
starting with the oldest measurement first.
Parameter
Typical Return
1 to 10,000
readings
Default is all
readings in
memory
#247-1.06469770E-03,-1.08160033E-03,-1.22469433E-03
The "#2" means that the next 2 digits indicate how many characters will
be in the returned memory string. These two digits are the "47" after the
"#2". Therefore, the remainder of the string is 47 digits long:
-1.06469770E-03,-1.08160033E-03,-1.22469433E-03
Read and remove the three oldest readings:
TRIG:COUN 3
INIT
R? 3
The R? and DATA:REMove? queries allow you to periodically remove measurements
from the reading memory that would normally cause the reading memory to overflow.
You can store up to 1,000 measurements in the reading memory of the SDM3055x. If
reading memory overflows, new measurements will overwrite the oldest
measurements stored; the most recent measurements are always preserved. No
error is generated, but the Reading Mem Ovfl bit (bit 14) is set in the Questionable
Data Register's condition register (see Status System Introduction).
The instrument clears all measurements from reading memory when the
measurement configuration changes, or when any of these commands is executed:
INITiate
MEASure:<function>?
READ?
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1.6 READ?
Read and erase measurement results from reading storage ,up to the specified <
max_readings >.This command reads the data will begin with the first measurement
results.
Parameter
Typical Return
(none)
-1.23006735E-03,-1.30991641E-03,-1.32756530E-03,
-1.32002814E-03
Transmission measurements from the reading memory:
TRIG:COUN 4
SAMP:COUN 1
READ?
The FETch? query does not erase measurements from the reading memory. You can
send the query multiple times to retrieve the same data.
You can store up to 1,000 measurements in the reading memory of the SDM3055. If
reading memory overflows, new measurements will overwrite the oldest
measurements stored; the most recent measurements are always preserved. No
error is generated, but the Reading Mem Ovfl bit (bit 14) is set in the Questionable
Data Register's condition register .
It is important to note that the following command will measurements to empty,
leading to FETCh? The return value of the change:
INITiate
MEASure:<function>?
READ?
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1.7 SAMPle:COUNt {<count>|MIN|MAX|DEF}
SAMPle:COUNt? [{MIN|MAX|DEF}]
Specifies the number of measurements (samples) the instrument will take per trigger.
Parameter
Typical Return
1( default) to10,000
1
Set a single trigger sampling frequency for 10 times, the back
panel of the VM Comp BNC connector on the oscilloscope will only
observe a pulse:
SAMP:COUN 10 //Set the sampling frequency for 10
times
TRIG:COUN 1 //Set the trigger for 1 times
TRIG:SOUR EXT;SLOP NEG //Set the trigger source to the
external trigger and trigger signal
is set to the falling edge
OUTP:TRIG:SLOP POS //Set the trigger output signal to rise
READ? //Start the wheel measurement and
reading
You can use the specified sample count in conjunction with a trigger count
(TRIGger:COUNt), which sets the number of triggers to be accepted before returning
to the "idle" trigger state. The total number of measurements returned will be the
product of the sample count and trigger count.
You can store up to 10,000 measurements in the reading memory of the SDM3055x.
If reading memory overflows, new measurements will overwrite the oldest
measurements stored; the most recent measurements are always preserved. No
error is generated, but the Reading Mem Ovfl bit (bit 14) is set in the Questionable
Data Register's condition register .
This parameter is set to its default value after a Factory Reset.
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1.8 UNIT:TEMPerature {C|F|K}
UNIT:TEMPerature?
Selects the units (°C, °F or Kelvin) to be used for all temperature measurements.
Parameter
Typical Return
{C|F|K},default C
C, F or K
Set to return the result in °F
UNIT:TEMP F //Set the temperature measurement unit in °F
MEAS:TEMP? //Recovery temperature default configuration
and read a set of temperaturemeasurements
The command also accepts CEL or FAR, but the query returns C or F.
This parameter is set to its default value after a Factory Reset.
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System Command
2.1 CALCulate Subsystem
2.1.1 CALCulate:CLEar[:IMMediate]
Clears all limits, histogram data, statistics and measurements.
Parameter
Typical Return
(none)
(none)
Clear all limits, histogram data, statistics, and measurements:
CALC:CLE:IMM CALC:CLE:IMM
The items cleared by this command are cleared synchronously, so that the histogram,
statistics, and limit data all restart at the same time that measurements restart.
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2.2 CALCulate:LIMit Subsystem
This subsystem specifies measurements and indicates when a limit has been exceeded.
Example
The following example enables limit testing of 100 DC voltage measurements and
indicates whether measurements were outside the range of 2.4 to 3.6 V. Measurements
above 3.6 V will set bit 12 (Upper Limit Failed) of the Questionable Status Register;
measurements below 2.4 V will set bit 11 (Lower Limit Failed).
*CLS
CONF:VOLT 10
SAMP:COUN 100
CALC:LIM:LOW 2.4
CALC:LIM:UPP 3.6
CALC:LIM:STAT ON
Command Summary
CALCulate:LIMit:CLEar[:IMMediate]
CALCulate:LIMit:{LOWer|UPPer}[:DATA]
CALCulate:LIMit[:STATe]
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2.2.1 CALCulate:LIMit:CLEar[:IMMediate]
Clears front-panel indications of limits being exceeded and clears bit 11 ("Lower Limit
Failed") and bit 12 ("Upper Limit Failed") in the Condition Register of the Questionable
Data Register event register group. The corresponding event register bits are unaffected.
A condition register continuously monitors the state of the instrument. Condition register
bits are updated in real time;they are neither latched nor buffered.
An event register is a read-only register that latches events from the condition register.
While an event bit is set,subsequent events corresponding to that bit are ignored.
Parameter
Typical Return
(none)
(none)
Clear the limit test results:
CALC:LIM:CLE
This command does not clear measurements in reading memory.
The instrument clears front-panel indications of limits being exceeded and clears bits
11 and 12 in the Questionable Data Register when the measurement function
changes, or when any of the executed:
CALCulate:LIMit:STATe ON
INITiate
MEASure:<function>?
READ?
CALCulate:LIMit:CLEar
To clear statistics, limits, histogram data, and measurement data, use
CALCulate:CLEar[:IMMediate].
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2.2.2 CALCulate:LIMit:{LOWer|UPPer}[:DATA] {<value>|MIN|MAX|DEF}
CALCulate:LIMit:{LOWer|UPPer}[:DATA]? [{MIN|MAX|DEF}]
Sets an upper or lower limit.
Parameter
Typical Return
-1.0E+15 to -1.0E-15，
or
0.0(default)
or
+1.0E-15 to 1.0E+15
+1.00000000E+00
See Example.
You can assign a lower limit, an upper limit or both. Do not set the lower limit above
the upper limit.If the limit set is higher than the upper limit, the limit value is set to the
same limitwill force the same value.
Limit crossing: If a measurement is less than the specified lower limit, bit 11 ("Lower
Limit Failed") is set in the Questionable Data Condition Register. A measurement
greater than the specified upper limit sets bit 12 ("Upper Limit Failed"). See STATus
Subsystem Introduction for further information.
This parameter is set to its default value after a Factory Reset.
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SDM3045X 18
2.2.3 CALCulate:LIMit[:STATe]{ON|1|OFF|0}
CALCulate:LIMit[:STATe]?
Enables or disables limit testing.
Parameter
Typical Return
{ON|1|OFF|0}, default OFF
0 (OFF) or 1 (ON)
See Example.
The instrument clears front-panel indications of limits being exceeded and clears bits
11 and 12 in the Questionable Data Register when the measurement function
changes, or when any of the following commands is executed:
CALCulate:LIMit:STATe ON
INITiate
MEASure:<function>?
READ?
CALCulate:LIMit:CLEar
The instrument turns this setting OFF when the measurement function is changed
.
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2.3 CALCulate:TRANsform:HISTogram Subsystem
The HISTogram subsystem configures the histogram display. The instrument clears
histogram data when the measurement function changes and when any of the following
commands is sent:
CALCulate:TRANsform:HISTogram:CLEar[:IMMediate]
CALCulate:TRANsform:HISTogram:POINts
CALCulate:TRANsform:HISTogram:RANGe:AUTO
CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer}
CALCulate:TRANsform:HISTogram[:STATe]
INITiate[:IMMediate]
MEASure:<function>?
READ?
Command Summary
CALCulate:TRANsform:HISTogram:ALL?
CALCulate:TRANsform:HISTogram:CLEar[:IMMediate]
CALCulate:TRANsform:HISTogram:COUNt?
CALCulate:TRANsform:HISTogram:DATA?
CALCulate:TRANsform:HISTogram:POINts
CALCulate:TRANsform:HISTogram:RANGe:AUTO
CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer}
CALCulate:TRANsform:HISTogram[:STATe]
Example
This example enables an automatically scaled, 100-bin histogram of 1000 DCV
measurements. It then returns the computed histogram, including the lower and upper
range values, the total measurement count, and the bin data.
CONF:VOLT:DC 10,0.001
SAMP:COUN 1000
CALC:TRAN:HIST:RANG:AUTO ON
CALC:TRAN:HIST:POIN 100
CALC:TRAN:HIST:STAT ON
INIT
*WAI
CALC:TRAN:HIST:ALL?
Typical Response: +9.99383828E+00,+1.00513398E+01,+1000,<102 bin counts>
Note: The above response indicates 102 bin counts because the histogram includes bins
for values below and above the histogram range.
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2.3.1 CALCulate:TRANsform:HISTogram:ALL?
CALCulate:TRANsform:HISTogram:DATA?
The ALL form of the query returns a comma-separated list of the lower and upper range
values, the number of measurements, and the bin data collected since the last time the
histogram data was cleared. The DATA form returns only the bin data.
Parameter
Typical Return
(none)
See Example.
See Example.
The bin data includes the following, in order:
The number of measurements less than the lower range value .
The number of measurements in the each of the bins, starting at the lower range
value bin
The number of measurements greater than the upper range value
Range values are real numbers returned in the form +1.00000000E+00. The number
of measurements and bin data are signed, positive integers returned in the form
+100.
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2.3.2 CALCulate:TRANsform:HISTogram:CLEar[:IMMediate]
Clears the histogram data and restarts histogram ranging if it is enabled
(CALCulate:TRANsform:HISTogram:RANGe:AUTO ON).
Parameter
Typical Return
（none）
（none）
Clear the histogram data:
CALC:TRAN:HIST:CLE
This command does not clear measurements in reading memory.
To clear statistics, limits, histogram data, and measurement data, use
CALCulate:CLEar[:IMMediate].
2.3.3 CALCulate:TRANsform:HISTogram:COUNt?
Returns the number of measurements collected since the last time the histogram was
cleared.
Parameter
Typical Return
（none）
+96
Return the number of measurements used to
compute the current histogram:
CALC:TRAN:HIST:COUN?
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2.3.4 CALCulate:TRANsform:HISTogram:POINts{<value>|MIN|MAX|DEF}
CALCulate:TRANsform:HISTogram:POINts?[{MIN|MAX|DEF}]
Sets the number of bins between the lower and upper range values for the histogram. Two
additional bins always exist: one for measurements below the lower range and one for
measurements above the upper range.
Parameter
Typical
Return
{10|20|40|100|200|400|MIN|MAX|DEF},default
100
+100
See Example.
You can specify the lower and upper range values using
CALCulate:TRANsform:HISTogram:RANGe: {LOWer|UPPer}.
Lower and upper range values are computed automatically if
CALCulate:TRANsform:HISTogram:RANGe:AUTO is ON.
This parameter is set to its default value after a Factory Reset.
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2.3.5 CALCulate:TRANsform:HISTogram:RANGe:AUTO{ON|1|OFF|0}
CALCulate:TRANsform:HISTogram:RANGe:AUTO?
Enables or disables automatic selection of the histogram's lower and upper range values.
Parameter
Typical Return
{ON|1|OFF|0}，default ON
0 (OFF) or 1 (ON)
See Example.
ON: the instrument set the lower and upper range values automaticly.
OFF: the lower and upper range values are specified by
CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer}.
Setting the lower or upper range value
(CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer) disables automatic
selection of the lower and upper range values
(CALCulate:TRANsform:HISTogram:RANGe:AUTO OFF).
The instrument restarts automatic range value selection (if enabled) when INITiate,
MEASure? or READ? is executed.
This parameter is set to its default value after a Factory Reset.
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2.3.6
CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer}{<valu
e>|MIN|MAX|DEF}
CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer}?[{MIN|
MAX|DEF}]
Sets the histogram's lower and upper range values. Setting the lower or upper range
value. (CALCulate:TRANsform:HISTogram:RANGe:{LOWer|UPPer}) disables automatic
selection of the lower and upper range values
(CALCulate:TRANsform:HISTogram:RANGe:AUTO OFF).
Parameter
Typical Return
-1.0E+15 to -1.0E-15,
or
0.0 (default)
or
+1.0E-15 to 1.0E+15
+1.00000000E+06
See Example.
If automatic range value selection is enabled
(CALCulate:TRANsform:HISTogram:RANGe:AUTO ON), the query returns the
computed range value. If no histogram data exists, 9.91E37 (Not a Number) is
returned.
Lower and upper range values are computed automatically if
CALCulate:TRANsform:HISTogram:RANGe:AUTO is ON.
This parameter is set to its default value after a Factory Reset.
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2.3.7 CALCulate:TRANsform:HISTogram[:STATe]{ON|1|OFF|0}
CALCulate:TRANsform:HISTogram[:STATe]?
Enables or disables histogram computation.
Parameter
Typical Return
{ON|1|OFF|0}, default OFF
0 (OFF) or 1 (ON)
See Example.
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2.4 CALCulate:SCALe Subsystem
This subsystem scales ACV and DCV measurements.
Command Summary
CALCulate:SCALe:DB:REFerence
CALCulate:SCALe:DBM:REFerence
CALCulate:SCALe:FUNCtion
CALCulate:SCALe:REFerence:AUTO
CALCulate:SCALe[:STATe]
2.4.1 CALCulate:SCALe:DB:REFerence {<reference>|MIN|MAX|DEF}
CALCulate:SCALe:DB:REFerence? [{MIN|MAX}]
Stores a relative value in the multimeter's dB Relative Register, which is used for the dB
function in CALCulate:SCALe:FUNCtion. When the dB function is enabled, this value will
be subtracted from the each voltage measurement after the measurement is converted to
dBm.
Note: This command applies only to ACV and DCV measurement functions.
Parameter
Typical Return
-200.0 dBm to +200.0 dBm, default 0
+5.00000000E+02
Enable dB scaling with a -10 dB reference reference resistance:
CALC:SCAL:DB:REF -10.0
CALC:SCAL:FUNC DB
CALC:SCAL:STAT ON
Specifying a reference value disables automatic reference selection
(CALCulate:SCALe:REFerence:AUTO OFF).
The dB relative value parameter is relative to the dBm reference set with
CALCulate:SCALe:DBM:REFerence.
The instrument sets the reference value to 0.0 with automatic reference selection
enabled after a Factory Reset, a change in math function, or a change in
measurement function.
SIGLENT Remote Manual
27 SDM3045X
2.4.2 CALCulate:SCALe:DBM:REFerence {<reference>|MIN|MAX|DEF}
CALCulate:SCALe:DBM:REFerence? [{MIN|MAX}]
Selects the reference resistance for converting voltage measurements to dBm. This
reference value affects the dBm and dB scaling functions.
Note:This command applies only to ACV and DCV measurement functions.
Parameter
Typical Return
50、75、93、110、124、125、135、
150、250、300、500、600((default)、
800、900、1000、1200 or 8000Ω
+6.00000000E+02
Enable dBm scaling with a reference resistance of 600 Ω:
CALC:SCAL:DBM:REF 600
CALC:SCAL:FUNC DBM
CALC:SCAL:STAT ON
The instrument sets the reference value to its default value after a Factory Reset, a
change in math function, or a change in measurement function.
Remote Manual SIGLENT
SDM3045X 28
2.4.3 CALCulate:SCALe:FUNCtion {DB|DBM}
CALCulate:SCALe:FUNCtion?
Selects the operation that will be performed by the scaling function:
DB performs a relative dB computation. The result will be the difference between the
input signal and the stored DB relative value (CALCulate:SCALe:DB:REFerence),
with both values converted to dBm (dB = measurement indBm – relative value in
dBm).
DBM performs a dBM computation. The result is logarithmic and is based on a
calculation of power delivered to a reference resistance
(CALCulate:SCALe:DBM:REFerence), relative to 1 milliwatt. (dBm = 10 × log10
(measurement 2 / reference resistance / 1 mW)).
Note: This command applies only to ACV and DCV measurement functions.
Parameter
Typical Return
{DB|DBM}
DBorDBM
Enable the DB scaling function referenced to the next
measurement taken:
CALC:SCAL:FUNC DBM
CALC:SCAL:STAT ON
For the dB function, the reference value can be automatically selected using the first
measurement converted to dBm as the reference value
(see CALCulate:SCALe:REFerence:AUTO), or it can be specified by
CALCulate:SCALe:DB:REFerence.
Scaling function results must be in the range of -1.0E+24 to -1.0E-24, or +1.0E-24 to
1.0E+24. Results outside these limits will be replaced with -9.9E37 (negative infinity),
0, or 9.9E37 (positive infinity).
This parameter is set to its default value after a Factory Reset.
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