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Chapter 1 27
Agilent EXA Signal Analyzer
Frequency and Time
Description Specifications Supplemental
Information
Resolution Bandwidth (RBW)
Range (−3.01 dB bandwidth) 1 Hz to 8 MHz
Bandwidths above 3 MHz are 4, 5, 6,
and 8 MHz.
Bandwidths 1 Hz to 3 MHz are spaced
at 10% spacing using the E24 series
(24 per decade): 1.0, 1.1, 1.2, 1.3, 1.5,
1.6, 1.8, 2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6,
3.9, 4.3, 4.7, 5.1, 5.6, 6.2, 6.8, 7.5, 8.2,
9.1 in each decade.
Power bandwidth accuracy
a
a. The noise marker, band power marker, channel power and ACP all compute their results using
the power bandwidth of the RBW used for the measurement. Power bandwidth accuracy is
the power uncertainty in the results of these measurements due only to bandwidth-related
errors. (The analyzer knows this power bandwidth for each RBW with greater accuracy than
the RBW width itself, and can therefore achieve lower errors.) The warranted specifications
shown apply to the Gaussian RBW filters used in swept and zero span analysis. There are four
different kinds of filters used in the spectrum analyzer: Swept Gaussian, Swept Flattop, FFT
Gaussian and FFT Flattop. While the warranted performance only applies to the swept Gauss-
ian filters, because only they are kept under statistical process control, the other filters nomi-
nally have the same performance.
RBW Range CF Range
1 Hz - 750 kHz All ±1.0% (0.044 dB)
820 kHz - 1.2 MHz <3.6 GHz ±2.0% (0.088 dB)
1.3 - 2.0 MHz <3.6 GHz ±0.07 dB (nominal)
2.2 - 3 MHz <3.6 GHz ±0.15 dB (nominal)
4 - 8 MHz <3.6 GHz ±0.25 dB (nominal)
Accuracy (−3.01 dB bandwidth)
b
1 Hz to 1.3 MHz RBW ±2% (nominal)
1.5 MHz to 3 MHz RBW
(CF ≤ 3.6 GHz)
(CF > 3.6 GHz)
±7% (nominal)
±8% (nominal)
4 MHz to 8 MHz RBW
(CF ≤ 3.6 GHz)
(CF > 3.6 GHz)
±15% (nominal)
±20% (nominal)
Selectivity (−60 dB/−3 dB) 4.1:1 (nominal)