5GNR Analyzer Measurement Guide : 5GNR Analyzer (Option 888) : 5GNR Channel Power
 
5GNR Channel Power
To select channel power measurement go to main menu and press MEASURE > MEASUREMENT >Channel Power. The channel power measurements are set up using the SETUP Menu (5GNR Channel Power). Channel power measurements are one of most common measurements for a radio transmitter. This test measures the output power of a transmitter within the specified channel bandwidth. Out-of-specification power measurements indicate system faults, which can be in the power amplifiers or in filter circuits. Channel power measurements can be used to validate transmitter performance, comply with government regulations, or to keep overall system interference at a minimum.
The channel power measurement is a test performed to measure the power transmitted within a specified frequency or channel bandwidth. The total RF power and power spectral density (PSD) is determined from a channel power measurement. An example of a channel power measurement is shown in Figure: 5GNR Channel Power Measurement.
5GNR Channel Power Measurement 

1. 5GNR Analyzer Status Panel: Each measurement features a unique status panel that displays settings and information relevant to the current measurement and view settings. This panel provides quick access to the measurement frequency, subcarrier spacing, channel bandwidth, and band configuration. See Status Panel (5GNR Channel Power).
2. Channel Power: Channel power is integrated over the shaded region where the dashed green lines indicate the upper and lower frequency thresholds.
3. SYNC: Valid 5GNR channel power measurements require signal synchronization. The indicator here blinks green when the received signal is synchronized, indicating that you have a valid measurement.
4. SETUP Menu: The channel power settings are configured in the SETUP menu. See SETUP Menu (5GNR Channel Power).
5. Channel Power Summary Table: This area shows the channel power measurement summary data and pass/fail test results, when enabled:
• The total channel power value and the test limit are expressed in dBm with a pass/fail result.
• The total PSD limit is expressed in dBm with a pass/fail result.
• Tapping this summary area opens the Channel Power SETUP menu.
SETUP Menu (5GNR Channel Power)
The Channel Power SETUP menu is available in MEASURE > MEASUREMENT > Channel Power > SETUP. Once the channel power measurement is selected, the SETUP menu can be quickly accessed by tapping on the summary display area below the spectrum display.
5GNR SETUP Menu (Channel Power)
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INTEGRATION BW
Sets the range of integration used in calculating the power in the channel. The integration bandwidth (IBW) is displayed as the shaded region between the bandwidth start and stop thresholds (dashed green lines).
PSD UNITS
Sets the unit bandwidth for power spectral density (PSD). The available units are Hz or MHz.
POWER LIMIT
The power limit is the threshold value used to determine whether the actual measured channel power will pass or not. If the measured channel power exceeds the set power limit, the channel power test fails; otherwise, the test passes. Pass/fail test results are shown in the measurement results table.
PSD LIMIT
If the power spectral density limit is on, the PSD limit is the threshold value used to determine whether the actual measured PSD will pass or not. If the measured PSD exceeds the PSD limit, the PSD test fails; otherwise the test passes.
PRESET SETUP
Presets the SETUP menu to default settings.
Status Panel (5GNR Channel Power)
The status panel illustrated in this section is unique to the current analyzer and to the particular measurement and view that is selected.
Figure: Status Panel (5GNR Channel Power Measurement) shows the 5GNR status panel that covers the 5GNR channel power measurements.
 
Status Panel (5GNR Channel Power Measurement) 
SWEEP: Toggles the current sweep setting between continuously or sweep once.
SWEEP ONCE
When sweep is set to single sweep, SWEEP ONCE updates the measurement display. Data continues to be captured in the background.
BAND
Select MANUAL, GLOBAL ALL or one of the predefined bands. Selecting MANUAL hides ARFCN and GSCN settings. Selecting a predefined band or GLOBAL ALL activates ARFCN and GSCN settings.
REF LEVEL
The reference level is the top graticule line to the left on the measurement display. If the reference level offset is not zero, the offset reference level is displayed at this location. Selecting the plus (+) or minus (–) control increments the value by 10. The plus/minus (+/-) button on the keypad toggles between positive and negative values.
SECOND REF LEVEL
The reference level is the top graticule line to the right on the measurement display. Its functionality is exactly same as reference level, but it is only available when trace math is enabled
CHANNEL BW
Sets the measurement channel bandwidth. The available bandwidth settings depend on the selected band and bandwidth option installed in the instrument. Refer to “Options Settings” section in Instrument Overview chapter of the user guide.
SCALE/DIV
The scale can be set from 1 dB per division to 15 dB per division. The default setting is 10 dB. Selecting the plus (+) or minus (–) control changes the value by 1. SCALE/DIV is not available when linear y-axis amplitude units are selected.
SECOND SCALE/DIV
It applies to second reference level and is available only when trace math is enabled.
SUBCARRIER SPACING
Sets the subcarrier spacing. The available input range is dependent on the selected band.
CENTER FREQUENCY
When the band is set to MANUAL, sets the center frequency of the measurement channel. Changing the center frequency sets the band to MANUAL.
SSB OFFSET
SSB is the Synchronous Signal Block. The SSB Offset sets the frequency offset between the SSB and the overall resource block.
ATTEN LEVEL
When auto attenuation is off, the attenuation value can be set manually to a resolution of 5 dB. Selecting the plus (+) or minus (–) control increments the value by 10.
PRE AMP
Toggles the low-noise front-end preamplifier on or off. Refer to Setting Amplitude Parameters.
TRACES: Displays the current status of up to six traces in a quick-view summary. The summary information includes the trace number, type, mode, and detector type. The active trace or cursor will show a highlighted background with the mode and detector type restated under the table. Touching a trace in the summary panel opens the TRACE menu. It allows you to select and set up an individual trace as desired.
FREQ REFERENCE
Indicates the current frequency reference source of Internal, External, or GNSS (GPS) Hi Accuracy (requires GPS). The instrument automatically selects the frequency reference in the following order of priority: external, GPS, then the internal time base.