Calculate:unit:power - Agilent Technologies 89400 Series Command Reference Manual

Command Reference
CALCulate[1|2|3|4]:UNIT:POWer
Specifies the default y-axis units for power measurements.
Command Syntax:
CALCulate[1|2|3|4]:UNIT:POWer <unit>
<unit>
Example Statements:
OUTPUT 719;"CALCULATE:UNIT:POWER Vrms2"
OUTPUT 719;"calc:unit:power Wrms"
Query Syntax:
CALCulate[1|2|3|4]:UNIT:POWer?
Return Format:
CHAR
Attribute Summary:
Synchronization Required:
Preset State:
SCPI Compliance:
dB
dBm
dBm/Hz
dBV
dBV/rtHz
dBVpk
dBVpk/rtHz
Description:
The UNIT subsystem is used to change default parameter units. The specified units apply to both
the command and query. Default units are temporarily overridden by using other (compatible)
units as a suffix to a command parameter, as when dBVrms is sent while the default is V.
The Y-scale units are volts or power when the instrument mode is not demodulation.
Power units (dBm or V
Volt units apply to time measurement data.
Units with /rtHz or 2/Hz (squared-per-Hz) are PSD measurement data.
When V is used without a peak or rms designation, peak is assumed.
Unit queries must be in the current "family" of units. For example, the CALC:UNIT:POW? query
should be used only when the default Y-axis units are known to be one of the units in the
POWER units list.
Measurement
Data Types
spectrum
118
::= (see units list below)
(see table in discussion)
confirmed
dBVrms
dBVrms/rtHz
pct
unitless
V
V/rtHz
V2
2
) apply to (power) spectrum measurement data.
Preset Power Units: Measurement Data vs. Data Format
log
magnitude
dBm
PSD dBm/Hz
time dBVpk
no
Units List
V2/Hz
Vpk
Vpk/rtHz
Vpk2
Vpk2/Hz
Vrms
Vrms/rtHz
Data Formats
linear
magnitude
Vrms
Vrms/rtHz
V
command/query
Vrms2
Vrms2/Hz
W
W/Hz
Wrms
Wrms/Hz
real or
imaginary
Vrms
Vrms/rtHz
V