Introduction 1Keysight 8990B User’s Guide 25Sensor CompatibilityThe 8990B is compatible with the Keysight N1923/4A wideband power sensor. Acombination of the 8990B and the N1923/4A wideband power sensor enables theRF pulse rise or fall time measurement of up to 5 ns. The following table lists thefrequency range and dynamic power range for each of these sensors:The 8990B is also compatible with the Keysight N1921/2A P-Series widebandpower sensor. The following table lists the frequency range and dynamic powerrange for each of these sensors:Wideband powersensor modelFrequency range Rise/fall time Dynamic power rangeN1923A 50 MHz to 18 GHz≤5.5 ns[a] –35 dBm to +20 dBmN1924A 50 MHz to 40 GHz≤5.5 ns[a] –35 dBm to +20 dBm[a] Applicable for frequency of ≥500 MHz.P-Series widebandpower sensor modelFrequency range Rise/fall time Dynamic power rangeN1921A 50 MHz to 18 GHz ≤13 ns[a] – –35 dBm to +20 dBm (≥500 MHz)– –30 dBm to +20 dBm (50 MHz to 500 MHz)N1922A 50 MHz to 40 GHz ≤13 ns[a] – –35 dBm to +20 dBm (≥500 MHz)– –30 dBm to +20 dBm (50 MHz to 500 MHz)[a] Specification applies only when the Off video bandwidth is selected.NOTE For further information on these sensors, refer to their respective manuals.
