Summary of advanced broadcast/transmission measurements provided in the AMK option

The SSA, SVA, and SHA instruments feature optional advanced measurements that are ideal for broadcast and transmission measurement applications.

Jim Wilson

Last Update a year ago


Models: SSA3000X, SSA3000X Plus, SSA3000X-R, SVA1000X, SSA5000A, and SHA800A 


Here is a summary of the measurements included in the Advanced Measurement Kit (AMK) option that are common to all of the models listed above

SSA3000X Plus, SSA3000X-R, SSA5000A, and SHA800A also include CNR and Harmonic measurements

Channel Power

Measure the power and power density within the specified channel bandwidth. Press Meas and select Channel Power to set the corresponding measurement parameters. 

Measurement Results: Channel power and power spectral density.


  • Channel Power: Power within the integration bandwidth.
  • Power Spectral Density: Power (in dBm/Hz) normalized to 1 Hz within the integration bandwidth.


Measurement Parameters: Center Freq, Integration bandwidth, Span, Span power


ACPR

Measure the power of the main channel and adjacent channels as well as the power difference between the main channel and each of the adjacent channels. Press Meas and select ACPR to set the corresponding parameters.

Adjacent Channel Power Measurement: Main CH Power, Left channel power and Right channel power.


  • Main CH Power: Displays the power within the bandwidth of the main power
  • Left channel power: Display the power of channel to the left of the main channel and the power difference between the

    left channel and the main channel (in dBc)

  • Right channel power: Display the power of the channel to the right of the main channel and the power difference between

    the right channel and the main channel (in dBc)


Measurement parameters: Center frequency, main channel bandwidth, adjacent channel bandwidth and channel spacing


Occupied BW

Integrate the power within the whole span and calculate the bandwidth occupied by this power according to the specified power ratio. The OBW function also indicates the difference (namely “Transmit Freq Error”) between the center frequency of the channel under measurement and the center frequency of the analyzer. Press Meas and select Occupied BW to set the corresponding parameters.

OBW measurement: Occupied bandwidth and transmit frequency error.
  • Occupied Bandwidth: Integrate the power within the whole span and then calculate the bandwidth occupied by the power according to the specified power ratio.
  • Transmit Frequency Error: The difference between the center frequency of the channel and the center frequency of the analyzer.

T-Power

The system enters zero span mode and calculates the power within the time domain. The types of powers available including: Peak, Average and RMS. Press Meas and select T-Power to set the corresponding parameters.

T-Power: The power of the signal from the start line to the stop line.


Measurement Parameter: Center frequency, start line, stop line.


TOI

Automatic measurement of IP3 (Third-order Intercept Point), including the power of the fundamental wave and the Third order in the power domain. Calculate the adjustable Intercept Point. Press Meas and select TOI to set the corresponding parameters.


Spectrum Monitor

Display the power of scanned spectra using color grading as well as collect a “waterfall” chart showing successive scans with respect to time. Press Meas and select Spectrum Monitor to set the corresponding parameters.



Below is a summary of the additional measurements included in the Advanced Measurement Kit (AMK) for the following models only: SSA3000X Plus, SSA3000X-R, SVA1000X, SSA5000A, and SHA800A 


CNR

Measure the power of the carrier and noise of the specified bandwidth and their ratio. Press Meas and select CNR to set the corresponding measurement parameters

Harmonics

Measure the harmonic power and total harmonic distortion of carrier signal. Press Meas and select Harmonics to set the corresponding measurement parameters. 

Harmonics Measurement:

  • Power: At fundamental (in dBm) and harmonics (in dBc)
  • THD: in %


Measurement parameters: Fundamental frequency, Frequency Step, Harmonic Number

More details can be found in the analyzer Users Guides available here

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