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Manual Part Number
N9010-90025
Supersedes: August 2009
Print Date
February 2010
Printed in USA
Agilent Technologies, Inc.
1400 Fountaingrove Parkway
Santa Rosa, CA 95403
Warranty
The material contained in this document is provided “as is,” and is
subject to being changed, without
notice, in future editions. Further,
to the maximum extent permitted
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be liable for errors or for incidental
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Should Agilent and the user have a
separate written agreement with
warranty terms covering the material in this document that conflict
with these terms, the warranty
terms in the separate agreement
shall control.
Technology Licenses
The hardware and/or software described
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Restricted Rights Legend
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(b)(2) (November 1995), as applicable in
any technical data.
Safety Notices
CAUTION
A CAUTION notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result
in damage to the product or loss of
important data. Do not proceed
beyond a CAUTION notice until
the indicated conditions are fully
understood and met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice,
or the like that, if not correctly
performed or adhered to, could
result in personal injury or
death. Do not proceed beyond a
WARNING notice until the indicated conditions are fully
understood and met.
2
Notice
Warranty
This Agilent technologies instrument product is warranted against defects in material and workmanship for
a period of one year from the date of shipment. During the warranty period, Agilent Technologies will, at
its option, either repair or replace products that prove to be defective.
For warranty service or repair, this product must be returned to a service facility designated by Agilent
T echnologies. Buyer shall prepay shipping charges to Agilent Technologies and Agilent Technologies shall
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and taxes for products returned to Agilent Technologies from another country.
Where to Find the Latest Information
Documentation is updated periodically. For the latest information about this analyzer, including firmware
upgrades, application information, and product information, see the following URLs:
http://www.agilent.com/find/exa
To receive the latest updates by email, subscribe to Agilent Email Updates:
http://www.agilent.com/find/emailupdates
Information on preventing analyzer damage can be found at:
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.
13
Agilent EXA Signal Analyzer
Definitions and Requirements
Definitions and Requirements
This book contains signal analyzer specifications and supplemental information. The distinctio n amon g
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 50°C, 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.
•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.
•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.
Certification
Agilent Technologies certifies that this product met its published specifications at the time of shipment
from the factory. Agilent Technologies further certifies that its calibration measurements are traceable to
the United States National Institute of Standards and Technology, to the extent allowed by the Institute’s
calibration facility, and to the calibration facilities of other International Standards Organization
members.
14Chapter 1
Agilent EXA Signal Analyzer
Frequency and Time
Frequency and Time
DescriptionSpecificationsSupplemental Information
Frequency Range
a. 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 ba nd 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 – 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.
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).
DescriptionSpecificationsSupplemental Information
Standard Frequency Reference
Accuracy±[(time since last adjustment × aging
rate) + temperature stability +
a
]
b
Temperature Stability
20 to 30 °C
5 to 50 °C
Aging Rate
calibration accuracy
±2 × 10
±2 × 10
±1 × 10
16Chapter 1
−6
−6
−6
/year
Agilent EXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Achievable Initial Calibration
±1.4 × 10
−6
Accuracy
Settability
Residual FM
Center Frequency = 1 GHz
±2 × 10
−8
≤10 Hz × N 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 adjustment procedure is followed, the calibration accuracy is given by the specifi-
cation “Achievable Initial Calibration Accuracy.”
b. For periods of one year or more.
c. N is the LO multiplication factor.
c
,
Chapter 1 17
Agilent EXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Precision Frequency Refere nce
(Option PFR)
Accuracy±[(time since last adjustment
× aging rate) + temperature
stability + calibration
accuracy
a]b
Temperature Stability
−8
−8
±5 × 10
−10
20 to 30 °C
5 to 50 °C
Aging Rate
±1.5 × 10
±5 × 10
Total Aging
1 Year
2 Years
Settability
Warm-up and Retrace
300 s after turn on
900 s after turn on
±1 × 10
±1.5 × 10
±2 × 10
c
−7
−9
−7
±1 × 10
−7
(nominal)
±1 × 10
−8
of final frequency
of final frequency
(nominal)
Achievable Initial Calibration Accuracy
d
±4 × 10
−8
Standby power to reference oscillatorNot supplied
Residual FM
Center Frequency = 1 GHz
≤ 0.25 Hz x N p-p in 20 ms
(nominal)
/day (nominal)
e
10 Hz RBW, 10 Hz VBW
a. Calibration accuracy depends on how accurately the frequency standard was adjusted to 10
MHz. If the adjustment procedure is followed, the calibration accuracy is given by the specifi-
cation “Achievable Initial Calibration Accuracy.”
b. The specification applies af ter the analyzer has been powered on for four hours.
c. 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. Retrac-
ing also occurs every time the power is applied. The effect of retracing is included within the
“Achievable Initial Calibration Accuracy” term of the Accuracy equation.
18Chapter 1
Agilent EXA Signal Analyzer
Frequency and Time
d. The achievable calibration accuracy at the beginning of the calibration cycle includes these
effects:
1) Te mperature difference between the calibration environment and the use environment
2) Orientation relative to the gravitation field changing between the calibration environment
and the use environment
3) Retrace effects in both the calibration environment and the use environment due to turning
the instrument power off.
4) Settability
e. N is the LO multiplication factor.
Chapter 1 19
Agilent EXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental
Information
Frequency Readout Accuracy±(marker freq. × freq. ref. accy. + 0.25%
a
+ 2 Hz + 0.5 ×
b
)
Example for EMC
× span + 5%× RBW
horizontal resolution
d
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 specifica-
tion equation, except for conditions in which the RBW term dominates, as explained in exam-
ples 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 autocou-
pled 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 0.25% × 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 trace 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 resolu-
tion 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 two cases: when all active traces use the same detector, and to
any trace that uses the peak detector. When multiple simultaneous detectors are in use, addi-
tional errors of 0.5, 1.0 or 1.5 display points will occur in some detectors, depending on the
combination of detectors in use. In one example, with positive peak, negative peak and average
detection, there is an additional error only in the average detection trace, which shifts the
apparent signal position left by 0.5 display points.
c
20Chapter 1
Agilent EXA Signal Analyzer
Frequency and Time
d. In most cases, the frequency readout accuracy of the analyzer can be exceptionally good. As an
example, Agilent 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.
Range
Span ≥ 10 Hz, swept1 μs to 500 ms
Span = 0 Hz or FFT−150 ms to +500 ms
Resolution0.1 μs
a. Delayed trigger is available with line, video, RF burst and external triggers.
DescriptionSpecificationsSupplemental Information
TriggersAdditional information on some of the triggers and
gate sources
Video
Independent 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
Chapter 1 23
Agilent EXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Sweep Type = FFTTriggers on the signal envelope in a bandwidth
wider than the FFT width
RF Burst
Level Range−50 to −10 dBm plus attenuation (nominal)
Bandwidth (−10 dB)
Most cases 16 MHz (nominal)
Sweep Type = FFT;
FFT Width = 25 MHz;
Span ≥ 8 MHz
Frequency LimitationsIf the start or center frequency is too close to zero,
External Triggers
30 MHz (nominal)
LO feedthrough can degrade or prevent triggering.
How close is too close depends on the bandwidth.
See “Inputs/Outputs” on page 71
a. The highest allowed mixer level depends on the attenuation and IF Gain. It is nominally
–10 dBm + input attenuation for Preamp Off and IF Gain = Low.
24Chapter 1
Agilent EXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental Information
Gated Sweep
Gate Methods Gated 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
100.0 ns to 5.0 s
External 2
Line
RF Burst
Periodic
Nominally no additional error for gated
measurements when the Gate Delay is greater
than the MIN FAST setting
Pos or neg edge triggered
Chapter 1 25
Agilent EXA Signal Analyzer
Frequency and Time
Nominal Measurement Time vs. Span [Plot]
DescriptionSpecificationsSupplemental Information
Number of Frequency Display Trace
Points (buckets)
Factory preset1001
Range1 to 40,001Zero and non-zero spans
26Chapter 1
Agilent EXA Signal Analyzer
Frequency and Time
DescriptionSpecificationsSupplemental
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,
a. The noise marker, band power marker , channel power and ACP all comp ute 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 Gaussian filters, because only they are kept under statistical process control, the other filters nominally have the same performance.
Chapter 1 27
Agilent EXA Signal Analyzer
Frequency and Time
b. 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
Standard10 MHz
With Option B2525 MHz
a
a. Analysis bandwidth is the instantaneous bandwidth available about a center frequency over
which the input signal can be digitized for further analysis or processing in the time, frequency, or modulation domain.
DescriptionSpecificationsSupplemental Information
Video Bandwidth (VBW)
RangeSame as Resolution Bandwidth
range plus wide-open VBW
(labeled 50 MHz)
Accuracy±6% (nominal)
in swept mode and zero span
a. For FFT processing, the selected VBW is used to determine a number of averages for FFT
results. That number is chosen to give roughly equivalent display smoothing to VBW filtering
in a swept measurement. For example, if VBW=0.1 × RBW, four FFTs are averaged to generate one result.
a
28Chapter 1
Agilent EXA Signal Analyzer
Amplitude Accuracy and Range
Amplitude Accuracy and Range
DescriptionSpecificationsSupplemental
Information
Measurement RangeDisplayed Average Noise Level to +23 dBm
Preamp OnDisplayed Average Noise Level to +23 dBmOption P03
Input Attenuation Range0 to 60 dB, in 10 dB stepsStandard
Input Attenuation Range0 to 60 dB, in 2 dB stepsWith Option FSA
DescriptionSpecificationsSupplemental Information
Maximum Safe Input LevelApplies with or without preamp
(Option P03)
Average Total Power+30 dBm (1 W)
Peak Pulse Power
<10 μs pulse width,
<1% duty cycle
input attenuation ≥ 30 dB
DC volts
DC Coupled±0.2 Vdc
AC Coupled±70 Vdc
DescriptionSpecificationsSupplemental Information
Display Range
Log ScaleTen divisions displayed;
+50 dBm (100 W)
0.1 to 1.0 dB/division in 0.1 dB steps, and
1 to 20 dB/division in 1 dB steps
Linear ScaleTe n divisions
Chapter 1 29
Agilent EXA Signal Analyzer
Amplitude Accuracy and Range
DescriptionSpecificationsSupplemental Information
Marker Readout
Log units resolution
Average Off, on-screen0.01 dB
Average On or remote0.001 dB
Linear units resolution≤1% of signal level (nominal)
a
a. Reference level and off-screen performance: The reference level (RL) behavior differs from
some earlier analyzers in a way that makes this analyzer more flexible. In other analyzers, the
RL controlled how the measurement was performed as well as how it was displayed. Because
the logarithmic amplifier in these analyzers had both range and resolution limitations, this
behavior was necessary for optimum measurement accuracy. The logarithmic amplifier in this
signal analyzer, however, is implemented digitally such that the range and resolution greatly
exceed other instrument limitations. Because of this, the signal analyzer can make measurements largely independent of the setting of the RL without compromising accuracy. Because
the RL becomes a display function, not a measurement function, a marker can read out results
that are off-screen, either above or below , without any change in accuracy. The only exception
to the independence of RL and the way in which the measurement is performed is in the input
attenuation setting: When the input attenuation is set to auto, the rules for the determination of
the input attenuation include dependence on the reference level. Because the input attenuation
setting controls the tradeoff between large signal behaviors (third-order intermodulation and
compression) and small signal effects (noise), the measurement results can change with RL
changes when the input attenuation is set to auto.
30Chapter 1
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