3 Short-Range Comms & IoT Mode
3.12 Monitor Spectrum Measurement
Remote Command
[:SENSe]:POWer[:RF]:MW:PATH STD | LNPath | MPBypass | FULL
[:SENSe]:POWer[:RF]:MW:PATH?
Example
:POW:MW:PATH LNP
Enables the Low Noise path
:POW:MW:PATH?
Notes When "Presel Center" on page 1654 is performed, the instrument momentarily switches to the
Standard Path, regardless of the setting of µW Path Control
The DC Block will always be switched in when the low noise path is switched in, to protect succeeding
circuitry from DC. Note that this does not mean “when the low noise path is enabled” but when, based
on the Low Noise Path rules, the path is actually switched in. This can happen when the selection is
Low Noise Path Enable or Full Bypass Enable. In the case where the DC Block is switched in, the
instrument is now AC-coupled. However, if you selected DC coupling, the UI would still behave as
though it were DC-coupled, including all annunciation, warnings, status bits, and responses to SCPI
queries. This is because, based on other settings, the instrument could switch out the low noise path
at any time and hence go back to being DC-coupled
Alignment switching ignores the settings in this menu, and restores them when finished
Dependencies Does not appear in CXA-m, VXT Models M9410A/11A/15A/16A, nor in M9410E/11E/15E/16E, BBIQ
and External Mixing
–
The Low Noise Path Enable selection does not appear unless Option LNP is present and licensed
–
The µW Preselector Bypass selection does not appear unless Option MPB is present and licensed
–
The Full Bypass Enable selection does not appear unless options LNP and MPB are both present
as well as option FBP
In any of these cases, if the required options are not present and the SCPI command is sent, error -
241, "Hardware missing; Option not installed" is generated
Low Noise Path Enable and Full Bypass Enable are grayed-out if the current measurement does not
support them
Low Noise Path Enable and Full Bypass Enable are not supported in Avionics and MMR Modes (non-
modulation measurements). In any of these cases (that is, the feature is not supported in either
measurement or Mode), if the SCPI command is sent, the following error is generated: -221, “Setting
Conflict; Feature not supported for this measurement”
Preset
Mode Value
IQ Analyzer
Pulse
RTSA
Avionics
MPB option present and licensed: MPB
MPB option not present and licensed: STD
All other Modes
STD
–
State Saved Save in instrument state
Range Standard Path | Low Noise Path Enable | µW Presel Bypass | Full Bypass Enable
Short Range Comms & IoT Mode User's &Programmer's Reference 1661
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