R&S®FSP-K90 WLAN 802.11a Application Firmware

Transmitter measurements on WLAN 802.11a/g OFDM signals with the Signal Analyzer R&S FSP

General Information

Application Firmware R&S FSP-K90 supports the following standard-conforming measurements:

  • Output power
  • Spectrum mask with limit lines and PASS/FAIL display
  • Spectrum flatness (including display of group delay)
  • Constellation error (EVM, unit dB and %)
  • RF carrier leakage (IQ offset)
  • Carrier frequency and symbol clock error
  • ACP measurement

It also supports further evaluations for more in-depth analysis:

  • Constellation diagram
  • Constellation overview for measured carriers
  • EVM for individual carriers
  • EVM versus symbols or time
  • Time-gated spectrum (FFT) and time-gated CCDF
  • Bit stream (demodulated RF, no channel decoding)
  • Analysis at the RF, IF or inverted sideband
  • Selectable tracking (phase, timing, level)

Residual EVM

Application Firmware R&S® FSP-K90 allows users to select whether channel estimation is performed during the preamble part of the signal (as specified in the standard) or during the preamble and data part (improved residual EVM).

Residual EVM Channel estimation
during preamble 		Channel estimation
during preamble and data
RF input, frequency 2.4 GHz or 5 GHz -41 dB -43 dB