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Manual Part Number
N9020-90113
Edition
Edition 1, December 2020
Supersedes: September 2020
Published by:
Keysight Technologies
1400 Fountaingrove Parkway
Santa Rosa, CA 95403
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This chapter contains the specifications for the core signal analyzer. The
specifications and characteristics for the measurement applications and
options are covered in the chapters that follow.
17
MXA Signal Analyzer
Definitions and Requirements
Definitions and Requirements
This book contains signal analyzer specifications and supplemental
information. The distinction among specifications, typical performance, and
nominal values are described as follows.
Definitions
— Specifications describe the performance of parameters covered by the
product warranty (temperature = 5 to 55°C
temperature range" or "Full range", unless otherwise noted).
— 95th percentile values indicate the breadth of the population (≈2σ) of
performance tolerances expected to be met in 95% of the cases with a 95%
confidence, for any ambient temperature in the range of 20 to 30°C. In
addition to the statistical observations of a sample of instruments, these
values include the effects of the uncertainties of external calibration
references. These values are not warranted. These values are updated
occasionally if a significant change in the statistically observed behavior of
production instruments is observed.
1
also referred to as "Full
— Typical describes additional product performance information that is not
covered by the product warranty. It is performance beyond specification
that 80% of the units exhibit with a 95% confidence level over the
temperature range 20 to 30°C. Typical performance does not include
measurement uncertainty.
— Nominal values indicate expected performance, or describe product
performance that is useful in the application of the product, but is not
covered by the product warranty.
Conditions Required to Meet Specifications
The following conditions must be met for the analyzer to meet its
specifications.
— The analyzer is within its calibration cycle. See the General section of this
chapter.
— Under auto couple control, except that Auto Sweep Time Rules = Accy.
— For signal frequencies < 10 MHz, DC coupling applied.
— Any analyzer that has been stored at a temperature range inside the
allowed storage range but outside the allowed operating range must be
stored at an ambient temperature within the allowed operating range for at
least two hours before being turned on.
1. For earlier instruments ( S/N prefix <MY/SG/US5051), the operating temperature
ranges from 5 to 50°C
18 Keysight N9020A MXA Specification Guide
MXA Signal Analyzer
Definitions and Requirements
— The analyzer has been turned on at least 30 minutes with Auto Align set to
Normal, or if Auto Align is set to Off or Partial, alignments must have been
run recently enough to prevent an Alert message. If the Alert condition is
changed from “Time and Temperature” to one of the disabled duration
choices, the analyzer may fail to meet specifications without informing the
user. If Auto Align is set to Light, performance is not warranted, and
nominal performance will degrade to become a factor of 1.4 wider for any
specification subject to alignment, such as amplitude tolerances.
Certification
Keysight Technologies certifies that this product met its published
specifications at the time of shipment from the factory. Keysight Technologies
further certifies that its calibration measurements are traceable to the
International System of Units (SI) via national metrology institutes
(www.keysight.com/find/NMI) that are signatories to the CIPM Mutual
Recognition Arrangement.
Keysight N9020A MXA Specification Guide 19
MXA Signal Analyzer
Frequency and Time
Frequency and Time
DescriptionSpecificationsSupplemental Information
Frequency Range
Maximum Frequency
Option 5033.6 GHz
Option 5088.4 GHz
Option 51313.6 GHz
Option 52626.5 GHz
Preamp Option P033.6 GHz
Preamp Option P088.4 GHz
Preamp Option P1313.6 GHz
Preamp Option P2626.5 GHz
Minimum Frequency
Preamp
Off10 MHz10 Hz
On10 MHz100 kHz
BandHarmonic
0 (20 Hz to 3.6 GHz)1−1Options 503, 508, 513, 526
1 (3.5 GHz to 8.4 GHz)1−1Options 508, 513, 526
2 (8.3 GHz to 13.6 GHz)1−2Options 513, 526
3 (13.5 to 17.1 GHz)2−2Options 526
4 (17.0 to 26.5 GHz)2−4Options 526
a. AC Coupled only applicable to Freq Options 503, 508, 513, and 526.
b. N is the LO multiplication factor. For negative mixing modes (as indicated by the “−” in the “Harmonic Mixing
Mode” column), the desired 1st LO harmonic is higher than the tuned frequency by the 1st IF (5.1225 GHz for
band 0, 322.5 MHz for all other bands).
AC Coupled
Mixing Mode
a
DC Coupled
LO Multiple (N
b
)
Band Overlaps
c
20 Keysight N9020A MXA Specification Guide
MXA Signal Analyzer
Frequency and Time
c. In the band overlap regions, for example, 3.5 to 3.6 GHz, the analyzer may use either band for measurements, in
this example Band 0 or Band 1. The analyzer gives preference to the band with the better overall specifications
(which is the lower numbered band for all frequencies below 26 GHz), but will choose the other band if doing so is
necessary to achieve a sweep having minimum band crossings. For example, with CF = 3.58 GHz, with a span of
40 MHz or less, the analyzer uses Band 0, because the stop frequency is 3.6 GHz or less, allowing a span without
band crossings in the preferred band. If the span is between 40 and 160 MHz, the analyzer uses Band 1, because
the start frequency is above 3.5 GHz, allowing the sweep to be done without a band crossing in Band 1, though
the stop frequency is above 3.6 GHz, preventing a Band 0 sweep without band crossing. With a span greater than
160 MHz, a band crossing will be required: the analyzer sweeps up to 3.6 GHz in Band 0; then executes a band
crossing and continues the sweep in Band 1.
Specifications are given separately for each band in the band overlap regions. One of these specifications is for the
preferred band, and one for the alternate band. Continuing with the example from the previous paragraph
(3.58 GHz), the preferred band is band 0 (indicated as frequencies under 3.6 GHz) and the alternate band is band
1 (3.5 to 8.4 GHz). The specifications for the preferred band are warranted. The specifications for the alternate
band are not warranted in the band overlap region, but performance is nominally the same as those warranted
specifications in the rest of the band. Again, in this example, consider a signal at 3.58 GHz. If the sweep has been
configured so that the signal at 3.58 GHz is measured in Band 1, the analysis behavior is nominally as stated in the
Band 1 specification line (3.5 to 8.4 GHz) but is not warranted. If warranted performance is necessary for this signal, the sweep should be reconfigured so that analysis occurs in Band 0. Another way to express this situation in
this example Band 0/Band 1 crossing is this: The specifications given in the “Specifications” column which are
described as “3.5 to 8.4 GHz” represent nominal performance from 3.5 to 3.6 GHz, and warranted performance
from 3.6 to 8.4 GHz.
DescriptionSpecificationsSupplemental
Information
Standard Frequency Reference
Accuracy±[(time since last adjustment × aging
rate) + temperature stability +
calibration accuracy
a
]
Temperature Stability
20 to 30°C
Full temperature range
Aging Rate
Achievable Initial Calibration Accuracy
Settability
Residual FM
(Center Frequency = 1 GHz
±2 × 10
±2 × 10
±1 × 10
±1.4 × 10
±2 × 10
−6
−6
−6
−8
/year
−6
b
≤10 Hz × N
c
p-p in 20 ms
(nominal)
10 Hz RBW, 10 Hz VBW)
a. Calibration accuracy depends on how accurately the frequency standard was adjusted to 10 MHz. If the adjust-
ment procedure is followed, the calibration accuracy is given by the specification “Achievable Initial Calibration
Accuracy.”
b. For periods of one year or more.
c. N is the LO multiplication factor.
Keysight N9020A MXA Specification Guide 21
MXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Precision Frequency Reference
(Option PFR)
Accuracy±[(time since last adjustment ×
aging rate) + temperature
stability + calibration accuracy
a]b
Temperature Stability
20 to 30°C
Full temperature range
Aging Rate
±1.5 × 10
±5 × 10
−8
−8
Nominally linear
−10
±5 × 10
Total Aging
−7
1 Year
2 Years
Settability
Warm-up and Retrace
d
300 s after turn on
900 s after turn on
Achievable Initial Calibration Accuracy
e
±1 × 10
±1.5 × 10
±2 × 10
±4 × 10
−9
−8
−7
Nominal
±1 × 10
±1 × 10
−7
of final frequency
−8
of final frequency
Standby power to reference oscillatorNot supplied
Residual FM
(Center Frequency = 1 GHz
≤0.25 Hz × N
(nominal)
10 Hz RBW, 10 Hz VBW)
c
/day (nominal)
f
p-p in 20 ms
a. Calibration accuracy depends on how accurately the frequency standard was adjusted to 10 MHz. If the adjust-
ment procedure is followed, the calibration accuracy is given by the specification “Achievable Initial Calibration
Accuracy.”
b. The specification applies after the analyzer has been powered on for four hours.
c. Narrow temperature range performance is nominally linear with temperature. For example, for
25±3º C, the stability would be only three-fifths as large as the warranted 25±5º C, thus ±0.9 × 10
−8
.
d. Standby mode does not apply power to the oscillator. Therefore warm-up applies every time the power is
turned on. The warm-up reference is one hour after turning the power on. Retracing also occurs every time
warm-up occurs. The effect of retracing is included within the “Achievable Initial Calibration Accuracy” term of
the Accuracy equation.
22 Keysight N9020A MXA Specification Guide
MXA Signal Analyzer
Frequency and Time
e. The achievable calibration accuracy at the beginning of the calibration cycle includes these effects:
1) Temperature difference between the calibration environment and the use environment
2) Orientation relative to the gravitation field changing between the calibration environment and the use envi-
ronment
3) Retrace effects in both the calibration environment and the use environment due to turning the instrument
power off.
4) Settability
f. N is the LO multiplication factor.
DescriptionSpecificationsSupplemental Information
Frequency Readout Accuracy±(marker freq × freq ref accy. + 0.25%×
a
+ 2 Hz + 0.5 × horizontal
)
Example for EMC
span + 5% × RBW
resolution
d
b
Single detector only
±0.0032% (nominal)
a. The warranted performance is only the sum of all errors under autocoupled conditions. Under non-autocoupled
conditions, the frequency readout accuracy will nominally meet the specification equation, except for conditions
in which the RBW term dominates, as explained in examples below. The nominal RBW contribution to frequency
readout accuracy is 2% of RBW for RBWs from 1 Hz to 390 kHz, 4% of RBW from 430 kHz through 3 MHz (the
widest autocoupled RBW), and 30% of RBW for the (manually selected) 4, 5, 6 and 8 MHz RBWs.
First example: a 120 MHz span, with autocoupled RBW. The autocoupled ratio of span to RBW is 106:1, so
the RBW selected is 1.1 MHz. The 5% × RBW term contributes only 55 kHz to the total frequency readout accuracy, compared to 300 kHz for the 0.0.25% × span term, for a total of 355 kHz. In this example, if an instrument
had an unusually high RBW centering error of 7% of RBW (77 kHz) and a span error of 0.20% of span (240 kHz),
the total actual error (317 kHz) would still meet the computed specification (355 kHz).
Second example: a 20 MHz span, with a 4 MHz RBW. The specification equation does not apply because the
Span: RBW ratio is not autocoupled. If the equation did apply, it would allow 50 kHz of error (0.25%) due to the
span and 200 kHz error (5%) due to the RBW. For this non-autocoupled RBW, the RBW error is nominally 30%,
or 1200 kHz.
b. Horizontal resolution is due to the marker reading out one of the sweep points. The points are spaced by
span/(Npts –1), where Npts is the number of sweep points. For example, with the factory preset value of 1001
sweep points, the horizontal resolution is span/1000. However, there is an exception: When both the detector
mode is “normal” and the span > 0.25 × (Npts –1) × RBW, peaks can occur only in even-numbered points, so
the effective horizontal resolution becomes doubled, or span/500 for the factory preset case. When the RBW is
autocoupled and there are 1001 sweep points, that exception occurs only for spans > 750 MHz.
c. Specifications apply to traces in most cases, but there are exceptions. Specifications always apply to the peak
detector. Specifications apply when only one detector is in use and all active traces are set to Clear Write. Specifications also apply when only one detector is in use in all active traces and the "Restart" key has been pressed
since any change from the use of multiple detectors to a single detector. In other cases, such as when multiple
simultaneous detectors are in use, additional errors of 0.5, 1.0 or 1.5 sweep points will occur in some detectors,
depending on the combination of detectors in use.
d. In most cases, the frequency readout accuracy of the analyzer can be exceptionally good. As an example, Key-
sight has characterized the accuracy of a span commonly used for Electro-Magnetic Compatibility (EMC) testing
using a source frequency locked to the analyzer. Ideally, this sweep would include EMC bands C and D and thus
sweep from 30 to 1000 MHz. Ideally, the analysis bandwidth would be 120 kHz at −6 dB, and the spacing of the
points would be half of this (60 kHz). With a start frequency of 30 MHz and a stop frequency of 1000.2 MHz and
a total of 16168 points, the spacing of points is ideal. The detector used was the Peak detector. The accuracy of
frequency readout of all the points tested in this span was with ±0.0032% of the span. A perfect analyzer with
this many points would have an accuracy of ±0.0031% of span. Thus, even with this large number of display
points, the errors in excess of the bucket quantization limitation were negligible.
a. Instrument conditions: RBW = 1 kHz, gate time = auto (100 ms), S/N ≥ 50 dB, frequency = 1 GHz
b. If the signal being measured is locked to the same frequency reference as the analyzer, the specified count
accuracy is ±0.100 Hz under the test conditions of footnote a. This error is a noisiness of the result. It will
increase with noisy sources, wider RBWs, lower S/N ratios, and source frequencies > 1 GHz.
DescriptionSpecificationsSupplemental Information
Frequency Span
Range
Option 5030 Hz, 10 Hz to 3.6 GHz
Option 5080 Hz, 10 Hz to 8.4 GHz
Option 5130 Hz, 10 Hz to 13.6 GHz
Option 5260 Hz, 10 Hz to 26.5 GHz
Resolution2 Hz
Span Accuracy
Swept
FFT
±(0.25% × span + horizontal resolution
±(0.1% × span + horizontal resolution
a
)
a
)
a. Horizontal resolution is due to the marker reading out one of the sweep points. The points are spaced by
span/(Npts − 1), where Npts is the number of sweep points. For example, with the factory preset value of 1001
sweep points, the horizontal resolution is span/1000. However, there is an exception: When both the detector
mode is “normal” and the span > 0.25 × (Npts − 1) × RBW, peaks can occur only in even-numbered points, so
the effective horizontal resolution becomes doubled, or span/500 for the factory preset case. When the RBW is
auto coupled and there are 1001 sweep points, that exception occurs only for spans > 750 MHz.
a. Delayed trigger is available with line, video, RF burst and external triggers.
b. Prior to A.19.28 software, zero span trigger delay was limited to -150 ms to 500 ms.
Keysight N9020A MXA Specification Guide 25
MXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
TriggersAdditional information on some of the triggers
and gate sources
VideoIndependent of Display Scaling and Reference
Level
Minimum settable level−170 dBmUseful range limited by noise
Maximum usable level
Highest allowed mixer level
a
+ 2 dB (nominal)
Detector and Sweep Type
relationships
Sweep Type = Swept
Detector = Normal, Peak, Sample
or Negative Peak
Triggers on the signal before detection, which is
similar to the displayed signal
Detector = AverageTriggers on the signal before detection, but with a
single-pole filter added to give similar smoothing
to that of the average detector
Sweep Type = FFTTriggers on the signal envelope in a bandwidth
wider than the FFT width
RF Burst
Level Range
−40 to −10 dBm plus attenuation (nominal)
b
Level Accuracy±2 dB + Absolute Amplitude Accuracy (nominal)
Bandwidth (−10 dB)
Most cases 16 MHz (nominal)
Sweep Type = FFT;
30 MHz (nominal)
FFT Width = 25 MHz;
Span ≥ 8 MHz
Frequency LimitationsIf the start or center frequency is too close to
zero, LO feedthrough can degrade or prevent
triggering. How close is too close depends on the
bandwidth listed above.
External TriggersSee “Trigger Inputs” on page 74
TV TriggersTriggers on the leading edge of the selected sync
pulse of standardized TV signals.
Amplitude Requirements–65 dBm minimum video carrier power at the
a. The highest allowed mixer level depends on the IF Gain. It is nominally –10 dBm for Preamp Off and IF Gain =
Low.
b. Noise will limit trigger level range at high frequencies, such as above 15 GHz.
DescriptionSpecificationsSupplemental Information
Gated Sweep
Gate MethodsGated LO
Gated Video
Gated FFT
Span RangeAny span
Gate Delay Range0 to 100.0 s
Gate Delay Settability4 digits, ≥100 ns
Gate Delay Jitter33.3 ns p-p (nominal)
Gate Length Range
(Except Method = FFT)
Gated Frequency and
Amplitude Errors
Gate SourcesExternal 1
100 ns to 5.0 sGate length for the FFT method is fixed at
1.83/RBW, with nominally 2% tolerance.
Nominally no additional error for gated
measurements when the Gate Delay is greater
than the MIN FAST setting
Pos or neg edge triggered
External 2
Line
RF Burst
Periodic
Keysight N9020A MXA Specification Guide 27
MXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Number of Frequency Sweep Points
(buckets)
Factory preset1001
Range1 to 100,001Zero and non-zero spans
Nominal Measurement Time vs. Span [Plot]
28 Keysight N9020A MXA Specification Guide
MXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Resolution Bandwidth (RBW)
Range (−3.01 dB bandwidth)
Standard
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.
a
With Option B85 or B1A, and Option RBE
10, 15, 20, 25, 30, 40, 50, 60, and
70 MHz, in Spectrum Analyzer mode and
zero span.
With Option B1X and Option RBE
a
10, 15, 20, 25, 30, 40, 50, 60, 70, 80,
100, and 133 MHz, in Spectrum Analyzer
mode and zero span.
Power bandwidth accuracy
b
RBW RangeCF Range
1 Hz to 750 kHzAll±1.0% (0.044 dB)
820 kHz to 1.2 MHz<3.6 GHz±2.0% (0.088 dB)
1.3 to 2.0 MHz<3.6 GHz±0.07 dB (nominal)
2.2 to 3 MHz<3.6 GHz0 to −0.2dB (nominal)
4 to 8 MHz<3.6 GHz0 to −0.4dB (nominal)
Noise BW to RBW ratio
Accuracy (−3.01 dB bandwidth)
c
d
1.056 ±2% (nominal)
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)
a. Option RBE enables wider bandwidth filters in zero span in the Signal Analyzer mode. Available detectors are
Peak+ and Average. VBW filtering is disabled. Minimum sweep time is the greater of 200 μS or 200ns/pt. The
filter shape is approximately square. Support for Average detector was first added in SW Version A.23.05.
Keysight N9020A MXA Specification Guide 29
MXA Signal Analyzer
Frequency and Time
b. The noise marker, band power marker, channel power and ACP all compute their results using the power band-
width 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 Gaussian filters, because only they are
kept under statistical process control, the other filters nominally have the same performance.
c. The ratio of the noise bandwidth (also known as the power bandwidth) to the RBW has the nominal value and
tolerance shown. The RBW can also be annotated by its noise bandwidth instead of this 3 dB bandwidth. The
accuracy of this annotated value is similar to that shown in the power bandwidth
accuracy specification.
d. Resolution Bandwidth Accuracy can be observed at slower sweep times than auto-coupled conditions. Normal
sweep rates cause the shape of the RBW filter displayed on the analyzer screen to widen by nominally 6%. This
widening declines to 0.6% nominal when the Swp Time Rules key is set to Accuracy instead of Normal. The true
bandwidth, which determines the response to impulsive signals and noise-like signals, is not affected by the
sweep rate.
DescriptionSpecificationSupplemental information
Analysis Bandwidth
a
Standard10 MHz
With Option B25
b
25 MHz
With Option B4040 MHz
With Option B8585 MHz
With Option B1A125 MHz
With Option B1X160 MHz
a. Analysis bandwidth is the instantaneous bandwidth available about a center frequency over which the input sig-
nal can be digitized for further analysis or processing in the time, frequency, or modulation domain.
b. Option B25 is standard for instruments ordered after May 1, 2011.
30 Keysight N9020A MXA Specification Guide
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