EVM Equalizer Spectrum Flatness (5G NR/5G-Advanced)

There are two types of traces in the Trace > Data > Demod and MIMO Multiple Input, Multiple Output: A physical layer (PHY) configuration in which both transmitter and receiver use multiple antennas. menus that display component carrier data: CCn (component carrier is fixed), and Selected Display CC (component carrier is dynamically selected using the Display parameter). See About Per-Carrier Trace Types for more information.

The EVM Equalizer Spectrum Flatness trace shows UL Up Link (reverse link: from cell phone to base station) Spectrum Flatness measurement results. For Uplink measurements only, EVM Error 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. equalizer spectrum flatness is measured based on 3GPP TS Technical Specification 138 101-2 V15.2.0. Range 1 (R1) and Range 2 (R2) are defined for each carrier in the Configuration tab's Carriers panel (NR Band, F_UL_Low, F_UL_High). Limits are defined in the Advanced tab (Test Environment Condition, Test Tolerance).

EVM Equalizer Spectrum Flatness is a type of Matrix Table that provides sortable rows can by column, selectable column visibility, and copy/paste and export functionality to share rows of content or complete tables to applications like email, text editing or spreadsheet programs.


Slot is the measured slot number. Average shows the average over all slots for each metric (column). Limits shows the test limits based on the Test Environment selection and the Limit Tolerance value. Metrics that do not have standard-based limits will display "***."	Pass/Fail shows the overall Pass/Fail results for each slot.	R1 Ripple (dB) is the measured peak-to-peak ripple of equalizer coefficients within R1.	R2 Ripple (dB) is the measured peak-to-peak ripple of equalizer coefficients within R2.	Max(R1)-Min(R2) (dB) is the difference between the maximum coefficient in R1 and the minimum coefficient in R2 for the slot.	Max(R2)-Min(R1) (dB) is the difference between the maximum coefficient in R2 and the minimum coefficient in R1 for the slot.	Min(R1) (dB) is the slot's minimun measured coefficient within R1.	Max(R1) (dB) is the slot's maximun measured coefficient within R1.	Min(R2) (dB) is the slot's minimun measured coefficient within R2.	Max(R2) (dB) is the slot's maximun measured coefficient within R2.

Slot

Pass/Fail

R1 Ripple (dB)

R2 Ripple (dB)

Max(R1)-Min(R2) (dB)

Max(R2)-Min(R1) (dB)

Min(R1) (dB)

Max(R1) (dB)

Min(R2) (dB)

Max(R2) (dB)

Slot is the measured slot number.

Average shows the average over all slots for each metric (column).

Limits shows the test limits based on the Test Environment selection and the Limit Tolerance value. Metrics that do not have standard-based limits will display "***."

Pass/Fail shows the overall Pass/Fail results for each slot.

R1 Ripple (dB) is the measured peak-to-peak ripple of equalizer coefficients within R1.

R2 Ripple (dB) is the measured peak-to-peak ripple of equalizer coefficients within R2.

Max(R1)-Min(R2) (dB) is the difference between the maximum coefficient in R1 and the minimum coefficient in R2 for the slot.

Max(R2)-Min(R1) (dB) is the difference between the maximum coefficient in R2 and the minimum coefficient in R1 for the slot.

Min(R1) (dB) is the slot's minimun measured coefficient within R1.

Max(R1) (dB) is the slot's maximun measured coefficient within R1.

Min(R2) (dB) is the slot's minimun measured coefficient within R2.

Max(R2) (dB) is the slot's maximun measured coefficient within R2.