3 Short-Range Comms & IoT Mode
3.8 SEM Measurement
Dependencies Not available in MSR, LTEAFDD, LTEATDD, and 5G NR Modes
Preset
ON
State Saved Saved in instrument state
Saved in instrument state
Range Auto | Man
Total Power Ref
Sets the power in the carrier (ref channel) that is used to compute the relative power
values for the offsets. For modes other than MSR, LTEAFDD, LTEATDD, and 5GNR,
when "Reference Power" on page 1174 is set to Measured, this value is set to the
measured carrier reference power. When set to Manual, the result takes on the last
measured value, or can be manually entered.
For WLAN 802.11ac (80 MHz + 80 MHz), the higher of the power readouts of the
two carriers is used for computing the relative power values for the offset.
Remote
Command
[:SENSe]:SEMask:CARRier[:POWer] <real>
[:SENSe]:SEMask:CARRier[:POWer]?
Example
:SEM:CARR 100dBm
:SEM:CARR?
Notes The min and max values given are for "Measurement Type" on page 1174 = Total Pwr Ref
Couplings Coupled with Measurement Type. Active when Measurement Type is set to Total Power Ref. Otherwise,
grayed-out
In MSR, LTE-A and 5G NR Modes, the control is active when Measurement Type is set to Total Power
and Power Ref is set to Manual
Preset Measured carrier reference power
State Saved Saved in instrument state
Min/Max -200 dBm/200 dBm
Annotation Value is displayed on the left top of the Results window with the Channel Integ BW
PSD Ref
Sets the power spectral density in the carrier that is used to compute the relative
power spectral density values for the offsets when "Measurement Type" on page
1174 is set to PSD Ref. When the state is set to Auto, this will be set to the
measured carrier power spectral density.
For WLAN 802.11ac (80 MHz + 80 MHz), the higher of the power density readouts of
the two carriers is used for computing the relative PSD values for the offset.
Remote
[:SENSe]:SEMask:CARRier:CPSD <real>
Short Range Comms & IoT Mode User's &Programmer's Reference 1175
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