362 Keysight N9915-90020 User’s Guide
Over–the–Air Measurements (OTA) – LTE FDD Option 370, LTE TDD Option 371, 5G TF
Option 377, 5G NR / 5G NR EVM Conducted Option 378
About Over–the–Air (OTA) Measurements
— RSSI (Received Signal Strength Indicator) (dBm)
— SINR (Signal to Interference & Noise Ratio) (dB)
— PSS (Primary Synchronization Signal) (dBm)
— SSS (Secondary Synchronization Signal) (dBm)
— DMRS (Physical Broadcast Channel Demodulation Reference Signal) (dBm)
— Frequency error (Hz)
— Time Offset (us) – Not shown in the 5G NR figures, but is part of the Carrier
Info scan results.
Display Types:
User can set up and display 1, 2, 3 or 4 simultaneous measurements of key
performance indicators (KPI's) for any component carrier (CC0 through CC7),
up to 8 carriers, in any combination of the following:
— Table – Cell scan numeric results, including PCI, RSRP, RSRQ, RSSI, PSS,
SSS, SINR and Freq Err, for up to 8 CCs and 6 cells for each CC
— Bar Chart – Vertical power bar graph of selectable cell scan result metric
with adjustable color “heat” amplitude scale, for up to 8 CCs and 6 cells for
each CC. And, color coded based on the selected scheme (i.e., CC, PCC,
and Level). See also,
Figure 13-2 on page 354, Figure 13-3 on page 354,
and
Figure 13-4 on page 355.
— Spectrum – Magnitude frequency spectrum (fixed span) for a selected CC
— Strip Chart – Magnitude of selectable cell scan result metric graphed over
time, for up to 8 CCs and 6 cells for each CC
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