Remote Control - Commands R&S NRP-Z5x
1137.0463.12 6.8 E-7
SENSe:AVERage:COUNt:AUTO:NSRatio[?] 0.0 to 1.0
SENSe:AVERage:COUNt:AUTO:NSRatio determines the relative noise component in the measurement
result if auto-averaging is operated in the corresponding mode (SENSe:AVERage:COUNt:AUTO:TYPE
NSRatio). The noise component is defined as the magnitude of the level variation in dB caused by the
inherent noise of the sensor (two standard deviations).
The query yields the relative noise component in the result.
Default setting: 0.01 [dB]
SENSe:AVERage:COUNt:AUTO:RESolution[?] 1 to 4
SENSe:AVERage:COUNt:AUTO:RESolution sets the resolution index for the automatic averaging filter.
The resolution index equals the number of decimal places that have to be taken into account for the
further processing of the measurement result in dBm, dBRV or dB. The normal mode is designed in a
similar manner as for the predecessors R&S NRVS and R&S NRVD or other commercial power meters.
The higher the selected index, the better the measurement result is filtered without the last significant
place (0.01 dB with an index of 3) actually being set. The NSRatio setting is recommended instead.
The query yields the resolution index.
Default setting: 3
SENSe:AVERage:COUNt:AUTO:TYPE[?] RESolution | NSRatio
SENSe:AVERage:COUNt:AUTO:TYPE defines the automatic averaging filter mode. The RESolution
parameter sets the mode usual for power meters; NSRatio predefines the compliance to an exactly
defined noise component.
The query yields
• 1 for RESolution,
• 2 for NSRatio.
Default setting: RESolution
SENSe:AVERage:RESet
SENSe:AVERage:RESet initializes the averaging filter. This is useful if a high averaging factor is set in
the SENSe:AVERage :TCONtrol MOVing filter mode and if the power to be measured has significantly
decreased since the previous measurement, e.g. by several powers of ten. In this case, previous
measurement results still contained in the averaging filter strongly affect the settling of the display; as a
result, the advantage of the SENSe:AVERage:TCONtrol MOVing filter mode, i.e. the ability to detect
trends in the measurement result while the measurement is still in progress, is lost. The
SENSe:AVERage:RESet command solves this problem by deleting all previous measurement results
that the averaging filter contains. After initialization, the filter length gradually increases from 1 to its
nominal value SENSe:AVERage:COUNt, so that trends in the measurement result become quickly
apparent. However, this procedure does not shorten the measurement time required in order for the
averaging filter to settle completely.
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