Channel Spectrum: Displays the spectrum of the input signal. Beneath the graph, values for the following measurements are displayed: Channel Power and Occupied BW. Channel Power is displayed in dBm or Watts (based on the Units submenu setting in the Amplitude menu) and Occupied BW is displayed in MHz. Press this button again to list the Channel Spectrum menu to set the Span. Span: Opens the Span list file to select a frequency span or Auto. Back: Returns to the RF Menu. ACLR: Displays a bar graph of the main channel power and two adjacent channels on either side. The table underneath the chart lists the frequency, power, and power relative to the main channel (in dB). Spectral Emission Mask: The Spectral Emission Mask measurement supports the testing for “Operating Band Unwanted Emissions” described in the 3GPP TS 36.141 Base Station Conformance testing document. There is support for Category A and Category B (Option 1 only) masks which are automatically selected based on the current carrier frequency/channel and BW values. The instrument indicates if the signal is within the specified limits by displaying PASS or FAIL. The emission mask information is also displayed in a table format with different frequency ranges and whether the signal PASSED/FAILED in that region. Press this button again to list the Spectral Emission submenu. Category A B (Opt. 1): Select the desired category based on the information above. Select Mask (Auto): Displays a list of standard and custom masks for use in SEM measurements. Select “Auto Select” if the desired mask is unknown. Summary Table: Displays the Spectral Emission measurement data in table form. Back: Returns to the RF Menu. RF Summary: Press this submenu key to display the following RF measurements in table format: Channel Power
Occupied BW
Lower Adjacent CH Pwr 2
Lower Adjacent CH Pwr 1
Upper Adjacent CH Pwr 1
Upper Adjacent CH Pwr 2
Spectral Emission Mask Back: Press this submenu key to return to Measurements Menu. | 