Rigol DSG800 Series Installation and operation manual

RIGOL
Performance Verification Guide
DSG800 Series
RF Signal Generator
Aug. 2015
RIGOL Technologies, Inc.

RIGOL
DSG800 Performance Verification Guide I
Guaranty and Declaration
Copyright
© 2015 RIGOL Technologies, Inc. All Rights Reserved.
Trademark Information
RIGOL is a registered trademark of RIGOL Technologies, Inc.
Publication Number
PVG02100-1110
Notices
RIGOL products are covered by P.R.C. and foreign patents, issued and pending.
RIGOL reserves the right to modify or change parts of or all the specifications and pricing
policies at company’s sole decision.
Information in this publication replaces all previously corresponding material.
Information in this publication is subject to change without notice.
RIGOL shall not be liable for either incidental or consequential losses in connection with the
furnishing, use or performance of this manual as well as any information contained.
Any part of this document is forbidden to be copied, photocopied or rearranged without prior
written approval of RIGOL.
Product Certification
RIGOL guarantees this product conforms to the national and industrial standards in China as well
as the ISO9001:2008 standard and the ISO14001:2004 standard. Other international standard
conformance certification is in progress.
Contact Us
If you have any problem or requirement when using our products or this manual, please contact
RIGOL.
E-mail: [e-mail]
Website: www.rigol.com

RIGOL
II DSG800 Performance Verification Guide
General Safety Summary
Please review the following safety precautions carefully before putting the instrument into
operation so as to avoid any personal injury or damage to the instrument and any product
connected to it. To prevent potential hazards, please use the instrument only specified by this
manual.
Use Proper Power Cord.
Only the power cord designed for the instrument and authorized for use within the local country
could be used.
Ground the Instrument.
The instrument is grounded through the Protective Earth lead of the power cord. To avoid electric
shock, it is essential to connect the earth terminal of the power cord to the Protective Earth
terminal before connecting any inputs or outputs.
Connect the Probe Correctly.
If a probe is used, do not connect the ground lead to high voltage since it has isobaric electric
potential as the ground.
Observe All Terminal Ratings.
To avoid fire or shock hazard, observe all ratings and markers on the instrument and check your
manual for more information about ratings before connecting the instrument.
Use Proper Overvoltage Protection.
Make sure that no overvoltage (such as that caused by a thunderstorm) can reach the product, or
else the operator might be exposed to the danger of electrical shock.
Do Not Operate Without Covers.
Do not operate the instrument with covers or panels removed.
Do Not Insert Anything Into the Holes of Fan.
Do not insert anything into the holes of the fan to avoid damaging the instrument.
Use Proper Fuse.
Please use the specified fuses.
Avoid Circuit or Wire Exposure.
Do not touch exposed junctions and components when the unit is powered.
Do Not Operate With Suspected Failures.
If you suspect damage occurs to the instrument, have it inspected by RIGOL authorized personnel
before further operations. Any maintenance, adjustment or replacement especially to circuits or

RIGOL
DSG800 Performance Verification Guide
III
accessories must be performed by RIGOL authorized personnel.
Keep Well Ventilation.
Inadequate ventilation may cause an increase of instrument temperature which would cause
damage to the instrument. So please keep the instrument well ventilated and inspect the intake
and fan regularly.
Do Not Operate in Wet Conditions.
In order to avoid short circuiting to the interior of the device or electric shock, please do not
operate the instrument in a humid environment.
Do Not Operate in an Explosive Atmosphere.
In order to avoid damage to the device or personal injuries, it is important to operate the device
away from an explosive atmosphere.
Keep Product Surfaces Clean and Dry.
To avoid the influence of dust and/or moisture in the air, please keep the surface of the device
clean and dry.
Electrostatic Prevention.
Operate the instrument in an electrostatic discharge protective environment to avoid damage
induced by static discharges. Always ground both the internal and external conductors of cables to
release static before making connections.
Proper Use of Battery.
If a battery is supplied, it must not be exposed to high temperature or in contact with fire. Keep it
out of the reach of children. Improper change of battery (note: lithium battery) may cause
explosion. Use RIGOL specified battery only.
Handling Safety.
Please handle with care during transportation to avoid damage to keys, knob interfaces and other
parts on the panels.

RIGOL
IV DSG800 Performance Verification Guide
Safety Terms and Symbols
Terms Used in this Manual. These terms may appear in this manual:
WARNING
Warning statements indicate conditions or practices that could result in injury or loss of
life.
CAUTION
Caution statements indicate conditions or practices that could result in damage to this
product or other property.
Terms Used on the Product. These terms may appear on the product:
DANGER
It calls attention to an operation, if not correctly performed, could result in injury or
hazard immediately.
WARNING
It calls attention to an operation, if not correctly performed, could result in potential
injury or hazard.
CAUTION It calls attention to an operation, if not correctly performed, could result in damage
to the product or other devices connected to the product.
Symbols Used on the Product.These symbols may appear on the product:
Hazardous
Voltage
Safety
Warning
Protective
Earth
Terminal
Chassis
Ground
Test
Ground

RIGOL
DSG800 Performance Verification Guide
V
Allgemeine Sicherheits Informationen
Überprüfen Sie diefolgenden Sicherheitshinweise sorgfältigumPersonenschädenoderSchäden am
Gerätundan damit verbundenen weiteren Gerätenzu vermeiden. Zur Vermeidung vonGefahren,
nutzen Sie bitte das Gerät nur so, wiein diesem Handbuchangegeben.
Um Feuer oder Verletzungen zu vermeiden, verwenden Sie ein ordnungsgemäßes
Netzkabel.
Verwenden Sie für dieses Gerät nur das für ihr Land zugelassene und genehmigte Netzkabel.
Erden des Gerätes.
Das Gerät ist durch den Schutzleiter im Netzkabel geerdet. Um Gefahren durch elektrischen Schlag
zu vermeiden, ist es unerlässlich, die Erdung durchzuführen. Erst dann dürfen weitere Ein- oder
Ausgänge verbunden werden.
Anschluss einesTastkopfes.
Die Erdungsklemmen der Sonden sindauf dem gleichen Spannungspegel des Instruments geerdet.
SchließenSie die Erdungsklemmen an keine hohe Spannung an.
Beachten Sie alle Anschlüsse.
Zur Vermeidung von Feuer oder Stromschlag, beachten Sie alle Bemerkungen und Markierungen
auf dem Instrument. Befolgen Sie die Bedienungsanleitung für weitere Informationen, bevor Sie
weitere Anschlüsse an das Instrument legen.
Verwenden Sie einen geeigneten Überspannungsschutz.
Stellen Sie sicher, daß keinerlei Überspannung (wie z.B. durch Gewitter verursacht) das Gerät
erreichen kann. Andernfallsbestehtfür den Anwender die GefahreinesStromschlages.
Nicht ohne Abdeckung einschalten.
Betreiben Sie das Gerät nicht mit entfernten Gehäuse-Abdeckungen.
Betreiben Sie das Gerät nicht geöffnet.
Der Betrieb mit offenen oder entfernten Gehäuseteilen ist nicht zulässig. Nichts in entsprechende
Öffnungen stecken (Lüfter z.B.)
Passende Sicherung verwenden.
Setzen Sie nur die spezifikationsgemäßen Sicherungen ein.
Vermeiden Sie ungeschützte Verbindungen.
Berühren Sie keine unisolierten Verbindungen oder Baugruppen, während das Gerät in Betrieb ist.
Betreiben Sie das Gerät nicht im Fehlerfall.
Wenn Sie am Gerät einen Defekt vermuten, sorgen Sie dafür, bevor Sie das Gerät wieder betreiben,

RIGOL
VI DSG800 Performance Verification Guide
dass eine Untersuchung durch RIGOL autorisiertem Personal durchgeführt wird. Jedwede
Wartung, Einstellarbeiten oder Austausch von Teilen am Gerät, sowie am Zubehör dürfen nur von
RIGOL autorisiertem Personal durchgeführt werden.
Belüftung sicherstellen.
Unzureichende Belüftung kann zu Temperaturanstiegen und somit zu thermischen Schäden am
Gerät führen. Stellen Sie deswegen die Belüftung sicher und kontrollieren regelmäßig Lüfter und
Belüftungsöffnungen.
Nicht in feuchter Umgebung betreiben.
Zur Vermeidung von Kurzschluß im Geräteinneren und Stromschlag betreiben Sie das Gerät bitte
niemals in feuchter Umgebung.
Nicht in explosiver Atmosphäre betreiben.
Zur Vermeidung von Personen- und Sachschäden ist es unumgänglich, das Gerät ausschließlich
fernab jedweder explosiven Atmosphäre zu betreiben.
Geräteoberflächen sauber und trocken halten.
Um den Einfluß von Staub und Feuchtigkeit aus der Luft auszuschließen, halten Sie bitte die
Geräteoberflächen sauber und trocken.
Schutz gegen elektrostatische Entladung (ESD).
Sorgen Sie für eine elektrostatisch geschützte Umgebung, um somit Schäden und
Funktionsstörungen durch ESD zu vermeiden. Erden Sie vor dem Anschluß immer Innen- und
Außenleiter der Verbindungsleitung, um statische Aufladung zu entladen.
Die richtige Verwendung desAkku.
Wenneine Batterieverwendet wird, vermeiden Sie hohe Temperaturen bzw. Feuer ausgesetzt
werden. Bewahren Sie es außerhalbder Reichweitevon Kindern auf. UnsachgemäßeÄnderung
derBatterie (Anmerkung: Lithium-Batterie) kann zu einer Explosion führen. VerwendenSie nur von
RIGOLangegebenenAkkus.
Sicherer Transport.
Transportieren Sie das Gerät sorgfältig (Verpackung!), um Schäden an Bedienelementen,
Anschlüssen und anderen Teilen zu vermeiden.

RIGOL
DSG800 Performance Verification Guide
VII
Sicherheits Begriffe und Symbole
Begriffe in diesem Guide. Diese Begriffe können in diesem Handbuch auftauchen:
WARNING
Die Kennzeichnung WARNING beschreibt Gefahrenquellen die leibliche Schäden oder
den Tod von Personen zur Folge haben können.
CAUTION
Die Kennzeichnung Caution (Vorsicht) beschreibt Gefahrenquellen die Schäden am
Gerät hervorrufen können.
Begriffe auf dem Produkt. Diese Bedingungen können auf dem Produkt erscheinen:
DANGER
weist auf eine Verletzung oder Gefährdung hin, die sofort geschehen kann.
WARNING weist auf eine Verletzung oder Gefährdung hin, die möglicherweise nicht sofort
geschehen.
CAUTION weist auf eine Verletzung oder Gefährdung hin und bedeutet, dass eine mögliche
Beschädigung des Instruments oder anderer Gegenstände auftreten kann.
Symbole auf dem Produkt. Diese Symbole können auf dem Produkt erscheinen:
Gefährliche
Spannung
Sicherheits-
Hinweis Schutz-erde Gehäusemasse Erde

RIGOL
VIII DSG800 Performance Verification Guide
Document Overview
This manual guides users to correctly test the performance specifications of RIGOL DSG800
series RF signal generator. For the operation methods of the instrument mentioned in this manual,
please refer to
DSG800 User’s Guide .
Main Contents in this Manual:
Chapter 1 Overview
This chapter introduces the preparations and precautions of the performance verification test.
Chapter 2 Performance Verification Test
This chapter introduces the limit, test devices, test method and test procedures of each
performance specification.
Appendix Test Record Form
In the appendix, a test record form is provided for recording the test results so as to determine
whether each performance specification fulfills the requirement.
Format Conventions in this Manual:
Front panel key: denoted by the format of "Text Box + Key Name (Bold)". For example, Syst.
Menu softkey: denoted by the format of "Character Shading + Menu Word (Bold)". For example,
Information.
Operation step: denoted by an arrow "". For example, Syst Information.
Connector: denoted by the format of "Square Brackets + Connector Name (Bold)". For example,
[RF OUTPUT 50Ω].

Contents RIGOL
DSG800 Performance Verification Guide
IX
Contents
Guaranty and Declaration..............................................................................................I
General Safety Summary............................................................................................. II
Safety Terms and Symbols ..........................................................................................IV
Allgemeine Sicherheits Informationen...............................................................................V
Sicherheits Begriffe und Symbole...................................................................................VII
Document Overview .................................................................................................VIII
Chapter 1 Overview ................................................................................................ 1-1
Test Preparations.........................................................................................................1-1
Test Result Record .......................................................................................................1-2
Specifications..............................................................................................................1-2
Chapter 2 Performance Verification Test................................................................. 2-1
Amplitude Accuracy Test...............................................................................................2-2
Specifications........................................................................................................2-2
Test Devices .........................................................................................................2-2
Test Connection Diagram .......................................................................................2-2
Test Procedures.....................................................................................................2-2
Test Record Form ..................................................................................................2-5
Single-sideband Phase Noise Test..................................................................................2-7
Specifications........................................................................................................2-7
Test Devices .........................................................................................................2-7
Test Connection Diagram .......................................................................................2-7
Test Procedures.....................................................................................................2-7
Test Record Form ..................................................................................................2-8
Second Harmonic Distortion Test...................................................................................2-9
Specification.........................................................................................................2-9
Test Devices .........................................................................................................2-9
Test Connection Diagram .......................................................................................2-9
Test Procedures.....................................................................................................2-9
Test Record Form ................................................................................................2-10
AM Test ....................................................................................................................2-12
Specifications......................................................................................................2-12
Test Devices .......................................................................................................2-12
Test Connection Diagram .....................................................................................2-12
Test Procedures...................................................................................................2-12
Test Record Form ................................................................................................2-13
FM Test.....................................................................................................................2-14
Specifications......................................................................................................2-14
Test Devices .......................................................................................................2-14
Test Connection Diagram .....................................................................................2-14

RIGOL Contents
X DSG800 Performance Verification Guide
Test Procedures ..................................................................................................2-14
Test Record Form................................................................................................ 2-15
ØM Test....................................................................................................................2-16
Specifications .....................................................................................................2-16
Test Devices.......................................................................................................2-16
Test Connection Diagram.....................................................................................2-16
Test Procedures ..................................................................................................2-16
Test Record Form................................................................................................ 2-17
Pulse Modulation Test ................................................................................................2-18
Specification....................................................................................................... 2-18
Test Devices.......................................................................................................2-18
Test Connection Diagram.....................................................................................2-18
Test Procedures ..................................................................................................2-18
Test Record Form................................................................................................ 2-19
10 MHz Reference Input Amplitude Range Test............................................................. 2-20
Specification....................................................................................................... 2-20
Test Devices.......................................................................................................2-20
Test Connection Diagram.....................................................................................2-20
Test Procedures ..................................................................................................2-20
Test Record Form................................................................................................ 2-21
Appendix Test Record Form ..........................................................................................1

Chapter 1 Overview RIGOL
DSG800 Performance Verification Guide
1-1
Chapter 1 Overview
Test Preparations
Before performing the test, make the following preparations.
1. The RF signal generator is stored for at least two hours under a temperature of 0℃to 50℃
and is warmed up for 40 minutes.
2. Make sure that the instrument is within the calibration period (1 year).
3. The test devices required should fulfill the requirements of the "Specification" column in Table
1-1. You can also use the recommended models in the following table for the test.
Table 1-1 Test Devices Required
Device Specification Qty. Recommended
Signal Analyzer[1]
Total amplitude uncertainty: ±0.19 dB
Option: analog modulation and demodulation, phase noise
test
1 Agilent N9030A
Spectrum Analyzer
(Optional) Total amplitude uncertainty: ±0.24 dB 1 Agilent E4440A
Signal Analyzer
(Optional)
Frequency range: 9 kHz to 7.5 GHz
Option: analog modulation and demodulation 1 Agilent N9000A
Power Meter and
Power Sensor
Resolution: 0.001 dB
Reference accuracy: ±1.2%
Frequency range: 9 kHz to 18 GHz
Max. SWR:
1.13 (9 kHz to 2 GHz)
1.19 (2 GHz to 14 GHz)
1.22 (14 GHz to 16 GHz)
1.26 (16 GHz to 18 GHz)
Amplitude range: 1 nW to 100 mW (-60 dBm to +20 dBm)
1
Agilent N1913A
and Agilent
E9304A
Function/Arbitrary
Waveform Generator
Max. output frequency: > 1 MHz
Flatness (< 1 MHz): ±0.3 dB
Amplitude accuracy (the amplitude is 2 Vpp): < ±30 mV
1 RIGOL DG4162 or
DG4062
Dual-N Cable
N (male)-N (male) cable
Frequency range: DC to 6 GHz
SWR: < 1.1
Insertion loss: < 1 dB
1 --
Dual-BNC Cable BNC (male)-BNC (male) cable 2 --
N-BNC Cable N (male)-BNC (male) cable 1 --
Note: [1] This signal analyzer can be used in place of the Agilent E4440A spectrum analyzer plus the N9000A
signal analyzer.

RIGOL Chapter 1 Overview
1-2 DSG800 Performance Verification Guide
Test Result Record
Record and keep the test result of each test. In the Appendix of this manual, a test result record
form which lists all the test items and their corresponding performance specification limits as well
as spaces for users to record the test results, is provided.
Tip:
It is recommended that users photocopy the test record form before each test and record the test
results in the copy so that the form can be used repeatedly.
Specifications
The specification of each test item is provided in chapter 2. For other specifications, refer to
DSG800 User’s Guide
or DSG800 Data Sheet (can be downloaded from www.rigol.com).
Tip:
All the specifications are only valid when the instrument has been warmed up for more than 40
minutes.

Chapter 2 Performance Verification Test RIGOL
DSG800 Performance Verification Guide 2-1
Chapter 2 Performance Verification Test
This chapter introduces the performance verification test methods and procedures of DSG800
series RF signal generator.
Note:
1) Make sure that the instrument has been warmed up for at least 40 minutes before executing
any of the following test items.
2) Reset the instrument to the factory setting before or after executing any of the following test
items.
3) The definitions of "Typical Value", "Nominal Value" and "Measured value" for this product.
Typical (typ.): the typical performance that 80 percent of the measurement results can
meet at room temperature (approximately 25℃). This data is not warranted and does not
include the measurement uncertainty.
Nominal (nom.): the expected average performance or the designed performance
attribute (for example, the 50 Ωconnector). This data is not warranted and is measured
at room temperature (approximately 25℃).
Measured (meas.): the performance attribute measured during the design phase and
used to be compared with the expected performance (for example, the variation of the
amplitude drift with time). This data is not warranted and is measured at room
temperature (approximately 25℃).

RIGOL Chapter 2 Performance Verification Test
2-2 DSG800 Performance Verification Guide
Amplitude Accuracy Test
Specifications
Absolute Level Uncertainty
Temperature range: 20℃to 30℃
+13 dBm to -60 dBm -60 dBm to -110 dBm
100 kHz ≤f ≤3 GHz ≤0.9 dB,
≤0.5 (typ.)
≤1.1 dB,
≤0.7 (typ.)
Test Devices
1. Power Meter and Power Sensor × 1
2. Dual-N Cable × 1
3. Dual-BNC Cable × 1
4. Signal Analyzer × 1
Test Connection Diagram
(a)
(b)
N9030A
Dual-N Cable
Dual-BNC Cable
RF IN RF OUT
RF OUT
N1913A
E9304A
10MHz OUT
EXT REF IN
DSG800
DSG800
Figure 2-1 Amplitude Accuracy Test Connection Diagram
Test Procedures
1. Calibrate the power meter:
a) Connect the power sensor with the [REF] terminal and channel A of the power meter.
Press Channel and set the frequency of channel A to 50 MHz.
b) Press Cal and enable Power Ref in the Zero/Cal menu. Press Zero+Cal and wait for

Chapter 2 Performance Verification Test RIGOL
DSG800 Performance Verification Guide
2-3
the calibration to finish; then, observe whether the measurement value of the power
meter is a 0 dBm, 50 MHz signal.
c) Disable Power Ref.
2. Connect the output terminal of DSG800 with the power sensor, as shown in Figure 2-1 (a).
3. Set DSG800 to output a sine waveform with -10 dBm amplitude. Then, modify the output
frequency of DSG800 according to Table 2-1 and turn on the RF output switch RF/on.
Table 2-1 Output Frequency of DSG800
Model Output Frequency
DSG830 103 kHz 1.03 MHz 50.03 MHz 503 MHz 1.903 GHz 2.493 GHz 2.903 GHz
DSG815 103 kHz 1.03 MHz 50.03 MHz 503 MHz 1.403 GHz
Note: When the frequency of the signal measured is less than 10 MHz, you need to switch the
signal analyzer to DC coupling mode to ensure the measurement accuracy.
4. Modify the frequency of the power meter accordingly each time the output frequency of
DSG800 is modified. Read the amplitude measurement value A1 and record it to the Test
Record Form.
5. Disconnect DSG800 and the power meter. Connect the [10MHz OUT] terminal of DSG800
with the [EXT REF IN] terminal at the rear panel of the signal analyzer using a dual-BNC
cable to synchronize the two instruments.
6. Connect the output terminal of DSG800 with the input terminal of the signal analyzer using a
dual-N cable as shown in Figure 2-1 (b).
7. Configure the signal analyzer:
a) Set the frequency reference input to external.
b) Set the span to 1 MHz.
c) Set the reference level to 0 dBm.
d) Set the input attenuation to 10 dB.
e) Set the resolution bandwidth to 10 kHz.
f) Set the sweep time to auto and the sweep time method to accurate.
g) Set the self-calibration to normal and perform all of the calibration items.
8. Set the output frequency of DSG800 and the center frequency of the signal analyzer according
to Table 2-1 (the center frequency of the signal analyzer corresponds to output frequency of
DSG800).
9. Each time the center frequency is changed, press Single, wait for the instrument to finish a
sweep and press Peak Search to find the maximum peak. Then, record the result A2 to the
Test Record Form.

RIGOL Chapter 2 Performance Verification Test
2-4 DSG800 Performance Verification Guide
10. Calculate the System Error (the input attenuation of the signal analyzer is 10 dB) = A2 - A1
and record the result.
11. Keep the connections shown in Figure 2-1 (b) unchanged, press Mode Preset to restore the
signal analyzer to its factory setting and set the output amplitude of DSG800 according to
Table 2-2.
Table 2-2 Output Amplitude of DSG800
Output Amplitude
-10 dBm
-80 dBm
Note: Here, the output amplitude of DSG800 is used as the amplitude Reference Value.
Different output amplitudes correspond to different reference values.
12. Each time the output amplitude of DSG800 is changed, modify the configurations of the signal
analyzer accordingly.
a) Set the frequency reference input to external.
b) Set the span to 100 Hz.
c) Set the reference level to -20 dBm.
d) Set the input attenuation to 10 dB.
e) Set the resolution bandwidth to 1 Hz.
f) Set the sweep time method to accurate.
g) Set the self-calibration to normal and perform all of the calibration items.
13. Set the output frequency of DSG800 and the center frequency of the signal analyzer according
to Table 2-1 (the center frequency of the signal analyzer corresponds to output frequency of
DSG800).
14. Each time the center frequency is changed, press Single and wait for the instrument to finish
a sweep; then, press Peak Search to find the maximum peak and record the measurement
result A3 to the Test Record Form.
15. Calculate the Global Error = A3 - Reference Value and record the result.
16. Calculate the Amplitude Accuracy = |Global Error - System Error|and compare the
measurement result with the specification.

Chapter 2 Performance Verification Test RIGOL
DSG800 Performance Verification Guide
2-5
Test Record Form
DSG800 Output
Frequency
Power Meter
Measurement Value A1
Signal Analyzer
Measurement Value A2 System Error[1]
103 kHz
1.03 MHz
50.03 MHz
503 MHz
1.403 GHz (Only for
DSG815)
1.903 GHz (Only for
DSG830)
2.493 GHz (Only for
DSG830)
2.903 GHz (Only for
DSG830)
Reference Value -10 dBm
DSG800 Output
Frequency
Signal Analyzer
Measurement Value A3
Global
Error[2]
Amplitude
Accuracy[3] Limit Pass/ Fail
103 kHz
≤0.9 dB,
≤0.5 (typ.)
1.03 MHz
50.03 MHz
503 MHz
1.403 GHz (Only for
DSG815)
1.903 GHz (Only for
DSG830)
2.493 GHz (Only for
DSG830)
2.903 GHz (Only for
DSG830)

RIGOL Chapter 2 Performance Verification Test
2-6 DSG800 Performance Verification Guide
Reference Value -80 dBm
DSG800 Output
Frequency
Signal Analyzer
Measurement Value A3
Global
Error[2]
Amplitude
Accuracy[3] Limit Pass/ Fail
103 kHz
≤1.1 dB,
≤0.7 (typ.)
1.03 MHz
50.03 MHz
503 MHz
1.403 GHz (Only for
DSG815)
1.903 GHz (Only for
DSG830)
2.493 GHz (Only for
DSG830)
2.903 GHz (Only for
DSG830)
Note:
[1] System Error = A2 - A1
[2] Global Error = A3 - Reference Value
[3] Amplitude Accuracy = |Global Error - System Error|