Include Droop (TEDS)

Menu Path: MeasSetup > Demod Properties > Advanced tab

Default: Selected (See Using Standard Setups/Presets)

Droop, when selected, configures the demodulator to include droop correction in measurement calculations.

Droop is a measure of the amplitude difference between the start and end of a TDMA bursttime division multiple access burst: A contiguous portion of the uplink or downlink using PHYPhysical Layer parameters, determined by the Downlink Interval Usage Code (DIUC) or Uplink Interval Usage Code (UIUCuplink interval usage code: An interval usage code specific to an uplink.), that remain constant for the duration of the burst. TDMATime Division Multiple Access: A technology for digital transmission of radio signals between, for example, a mobile telephone and a radio base station. In TDMA, the frequency band is split into a number of channels which in turn are stacked into short time units so that several calls can share a single channel without interfering with one another. Networks using TDMA assign 6 timeslots for each frequency channel. TDMA is also the name of a digital technology based on the IS-136 standard. TDMA is the current designation for what was formerly known as D-AMPS. bursts are separated by preambles and are separated by gaps in transmission if subsequent bursts are from different transmitters. from an Normal Uplink, Random Access, or Control Uplink transmission and is calibrated in dB/symbol, typically in fractions, that is, mdB/symbol (millidB) or udB/symbol (microdB). The primary transmission accuracy measurement that includes droop is Error Vector Magnitude (EVMError vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format.). EVM provides an overall measure of the divergence between the transmitter position and the ideal phase diagram. To remove droop correction from measurement calculations, clear this checkbox.

To view measured droop, see Error Summary (Composite).

See Also

Format Tab

Advanced Tab