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1
Getting Started
Sensor Compatibility
The 8990B is compatible with the Keysight N1923/4A wideband power sensor. A
combination of the 8990B and the N1923/4A wideband power sensor enables the
RF pulse rise or fall time measurement of up to 5 ns. The following table lists the
frequency range and dynamic power range for each of these sensors:
Wideband power
Frequency range
sensor model
N1923A
50 MHz to 18 GHz
N1924A
50 MHz to 40 GHz
[1] Applicable for frequency of ≥500 MHz.
The 8990B is also compatible with the Keysight N1921/2A P-Series wideband
power sensor. The following table lists the frequency range and dynamic power
range for each of these sensors:
P-Series wideband
Frequency range
power sensor model
N1921A
50 MHz to 18 GHz
N1922A
50 MHz to 40 GHz
[1] Specification applies only when the Off video bandwidth is selected.
For further information on these sensors, refer to their respective manuals.
NOTE
24
Rise/fall time
Dynamic power range
–35 dBm to +20 dBm
[1]
≤5.5 ns
–35 dBm to +20 dBm
1]
≤5.5 ns[
Rise/fall time
Dynamic power range
– –35 dBm to +20 dBm (≥500 MHz)
[1]
≤13 ns
– –30 dBm to +20 dBm (50 MHz to 500 MHz)
– –35 dBm to +20 dBm (≥500 MHz)
[1]
≤13 ns
– –30 dBm to +20 dBm (50 MHz to 500 MHz)
Keysight 8990B Installation Guide
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