Specifications

Chapter 2 Command System RIGOL
M300 Programming Guide 2-17
CALCulate:SCALe:UNIT
Syntax CALCulate:SCALe:UNIT <quoted_string>[,(@<ch_list>)]
CALCulate:SCALe:UNIT? [(@<ch_list>)]
Description Specify the uint of the scaled readings of the specified channels. It will affect the unit of the
readings when storing the measurement data.
Parameters
Name
Type
Range
Default
<quoted_string> Discrete
{K|#C|#F|ASCII String}
Wherein, "#" represents the degree
symbol (°); the ASCII string is
enclosed in double quotation marks
and can not exceeds three characters
(it can contain English
uppercase/lowercase letters (A-Z, a-z)
or numbers (0-9). The first character
can not be a number).
The default
unit of the
current
function
[1]
.
<ch_list>
Channel
List
One or more channels (only for the
multiplexer channels), the rules are as
follows:
(@101): channel 01 on the module in
Slot1;
(@101:103): channel 01 through 03
on the module in Slot1;
(@101:103,301): channel 01 through
03 on the module in Slot1 and channel
01 on the module in Slot3.
If the
parameter is
omitted, this
command will
be applied to
the whole scan
list.
Note
[1]
: For the voltage measurement, the default
unit is “V”. For the current measurement, the
default unit is “A”. For the resistance measurement, the default unit is “Ω”. For the frequency
measurement, the default unit is “Hz”. For the period measurement, the default unit is “s”. For the
temperature measurement, the default unit is “°C”.
Explanation  If you set the unit of the scaled readings to °C, °F, or K using this command, the unit of
the temperature measurement will not be affected (refer to the
UNIT Command
Subsystem).
 If the measurement function of the specified channel is Anysensor, the unit of the
scaling is not allowed to set and an error will be generated when sending this
command.
 The commands in the
CONFigure Command Subsystem and MEASure Command
Subsystem will automatically revert the unit to the default units for the function.
 The scaling unit is used when displaying and storing of the scaling readings and has no
effect on the measurement units.
 A Factory Reset (the
*RST command) turns off the scaling function and clears the units
of the scaling readings (the units are restored to the default units for the function). An
Instrument Preset (the
SYSTem:PRESet command) or Card Reset (the SYSTem:CPON
command) does not turn off the scaling function and does not clear the units of the
scaling readings.
Return
Format
The query returns ”K”, ”#C”, ”#F” or ASCII strings enclosed in double quotation marks for
the specified channels. Multiple return values are separated by commas.
Example CALC:SCAL:UNIT “PSI”,(@101,102)
CALC:SCAL:UNIT? (@101,102)
The query returns ”PSI”,”PSI”.