Scanner, Tx Test, Antenna Status and Mapping are measurements taken over the air. EMF measurements are available only with Option 444.

Antenna Status and the PBCH Modulation Results table are displayed when the Show Mod Results are set On for Scanner and Tx Test measurements. The PBCH Modulation Results table is the same numeric results table displayed in LTE Modulation Constellation and Control Channel Power measurements.

The Antenna Status indicator shows the number of antennas detected and which one is currently being measured. In OTA Measurements, the Antenna Status is displayed when Show Mod Results is On for Scanner and Tx Test.

The Scanner measurement scans for the presence of up to 6 cell IDs and the following measurement values.

Identifying information sent by the transmitter in the sync signal.

Secondary Sync Signal power is displayed in dBm or Watts. The secondary sync signal is used to obtain frame synchronization and cell identity. S‑SS Power contains information needed for cell search.

Reference Signal Received Power provides the UE with essential information about the strength of cells from which path loss can be calculated and used for determining optimum power settings for operating networks. RSRP is used in both idle and connected states. RSRP is used as a parameter in multi‑cell scenarios.

Reference Signal Receive Quality provides additional information when RSRP is not sufficient to make a reliable handover or cell reselection decision. RSRP is the ratio between RSRP and RSSI measured in dB.

Signal‑to‑Interference-plus-Noise Ratio is measured in dB.

Dominance

Dominance is the ratio of the power for the largest signal to the sum of all other signals found, measured in dB.

Tx Test measurements are optimized for remote radio heads and MIMO systems. The first table in Tx Test replicates the Scanner table measurements, except the measurement scans the presence of up to 3 cell IDs. The second table shows the RS power across all detected antennas (transmitters) for the strongest Cell ID. This is displayed as average power and delta power for the detected transmitters, along with a small bar graph that shows the relative RS powers for each Tx. The PBCH Modulation Results table can also be turned on.

Coverage Mapping allows users to measure and map Sync Signal Power, Reference Signal Received Power (RSRP), Reference Signal Receive Quality (RSRQ) and SINR. It is the same measurement as in Scanner which scans for the presence of up to 6 cell IDs but only displays the presence of up to 3 cell IDs. For full details regarding Coverage Mapping set up and testing, refer to LTE and TD‑LTE Coverage Mapping.

This measurement displays a table of up to five Component Carriers (CC) used in Carrier Aggregation and their measured signal components.

This is the set center frequency.

This is the set bandwidth of the Component Carrier.

The length of Cyclic Prefix can be specified as either Normal or Extended. Normal CP consists of 15 kHz subcarriers while Extended CP consists of 15 kHz and 7.5 kHz subcarriers.

The MIMO status indicators show which transmitters are active in a MIMO configuration. Active transmitters display as a green dot, inactive as grey. They correspond to the antenna icons shown at the bottom left of the screen for each Component Carrier scanned.

Reference Signal power is displayed in dBm or Watts. The reference signal is used for downlink channel estimation.

RS Delta Power shows the maximum relative power difference in dB between the RS powers of the MIMO signals and can be used to check correct MIMO configuration.

Sync signal power is displayed in dBm or Watts.

The RMS (%) of all the error vectors, between the reconstructed ideal signals and the received signals, divided by the RMS value of the ideal signals.

 

The peak (%) of all the error vectors, between the reconstructed ideal signals and the received signals, divided by the RMS value of the ideal signals.

This is the difference between the measured carrier frequency and the specified carrier frequency. This number is only as accurate as the frequency reference that is used, and is typically only useful with a good external frequency reference or GPS.

This is the frequency error displayed in parts per million.

Time Alignment Error (TAE) is a measurement of the differential transmission delay between the Component Carriers. The 3GPP specification identifies the limits of the delays for the system to operate properly.

Cell identifying information sent by the transmitter in the sync signal.

EMF measurements are available in Over‑the‑Air LTE Signal Analyzer mode only when Option 444 is installed. The option requires an isotropic antenna, at a frequency range that is within specification of the instrument and antenna used. Refer to the isotropic antenna and signal analyzer technical data sheets.

EMF (Option 444) provides connection instructions for the antenna and detailed descriptions of the EMF Measurement menu and submenus.

Refer to LTE and TD‑LTE Coverage Mapping.

Refer to Carrier Aggregation Menu.

Refer to LTE/TD-LTE EMF Menu.