Rigol DP1308A Installation and operation manual

RIGOL
Performance Verification Manual
DP1308A
Programmable Linear DC Power Supply
Feb. 2014
RIGOL Technologies, Inc.

RIGOL
DP1308A Performance Verification Manual I
Guaranty and Declaration
Copyright
© 2011 RIGOL Technologies, Inc. All Rights Reserved.
Trademark Information
RIGOL is a registered trademark of RIGOL Technologies, Inc.
Publication Number
PVH01102-1110
Notices
RIGOL products are protected by patent law in and outside of P.R.C.
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.
RIGOL shall not be liable for losses caused by either incidental or consequential
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 or 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
DP1308A Performance Verification Manual
II
General Safety Summary
Please review the following safety precautions carefully before putting the instrument
into operation so as to avoid any personal injuries or damages 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 power cord to the
Protective Earth terminal before 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 the
isobaric electric potential as 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.
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 expose to 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.

RIGOL
DP1308A Performance Verification Manual
III
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 qualified service
personnel before further operations. Any maintenance, adjustment or replacement
especially to circuits or accessories must be performed by RIGOL authorized
personnel.
Keep Well Ventilation.
Inadequate ventilation may cause increasing of temperature or damages to the device.
So please keep 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 in a humid environment.
Do Not Operate in an Explosive Atmosphere.
In order to avoid damages 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 air, please keep the surface of device
clean and dry.
Electrostatic Prevention.
Operate in an electrostatic discharge protective area environment to avoid damages
induced by static discharges. Always ground both the internal and external conductors
of the cable to release static before connecting.
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 damages to buttons, knob
interfaces and other parts on the panels.

RIGOL
DP1308A Performance Verification Manual
IV
Do Not Provide Power for the Active Load.
In order to avoid the anti-irrigation current which leads to the power control loop out
of control and damages the powered device, this power supply can only provide power
for the pure load without the current output function.

RIGOL
DP1308A Performance Verification Manual
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.

RIGOL
DP1308A Performance Verification Manual
VI
Betreiben Sie das Gerät nicht im Fehlerfall.
Wenn Sie am Gerät einen Defekt vermuten, sorgen Sie dafür, bevor Sie das Gerät
wieder betreiben, dass eine Untersuchung durch qualifiziertes Kundendienstpersonal
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.
Vermeiden Sie das einprägen von Strom und Spannung an den
Testklemmen.
Das DP800 Power Supply kann hierdurch zerstört werden, keine akive Last. Das
DP800 kann nur Strom und Spannungen leifern.

RIGOL
DP1308A Performance Verification Manual
VII
Document Overview
DP1308A is a high-performance programmable linear DC power supply with 80W triple
outputs (+6V/5A, +25V/1A and -25V/1A). This manual introduces the DP1308A
performance verification procedures which verify that DP1308A is operating normally
and is within published specifications.
Main topics of this manual:
Chapter 1 Test Preparations
This chapter introduces the test preparations as well as the recommended test
devices.
Chapter 2 Constant Voltage Tests
This chapter introduces the specification test methods of DP1308A under CV
(constant voltage) mode.
Chapter 3 Constant Current Tests
This chapter introduces the specification test methods of DP1308A under CC
(constant current) mode.
Appendix
A test result record form and DP1308A performance specifications are provided.

RIGOL
DP1308A Performance Verification Manual
VIII
Contents
Guaranty and Declaration...........................................................................I
General Safety Summary.......................................................................... II
Allgemeine Sicherheits Informationen...................................................... V
Document Overview............................................................................... VII
Chapter 1 Test Preparations ................................................................1-1
Self-test and Warm-up............................................................................. 1-2
Self-test........................................................................................... 1-2
Warm-up ......................................................................................... 1-2
Recommended Test Devices..................................................................... 1-3
Voltage and Current Values...................................................................... 1-4
Test Result Record .................................................................................. 1-4
Chapter 2 Constant Voltage Tests........................................................2-1
Preparation............................................................................................. 2-2
CV Load Adjustment Rate (CV Load Effect)................................................ 2-3
CV Linear Adjustment Rate (CV Source Effect)........................................... 2-5
CV Ripple and Noise................................................................................ 2-7
Transient Response Time........................................................................2-10
CV Programming and Readback Accuracy.................................................2-12
Chapter 3 Constant Current Tests........................................................3-1
Preparation............................................................................................. 3-2
CC Load Adjustment Rate (CC Load Effect)................................................ 3-3
CC Linear Adjustment Rate (CC Source Effect)........................................... 3-5
CC Ripple and Noise (Normal Mode).......................................................... 3-7
CC Programming and Readback Accuracy.................................................. 3-8
Appendix................................................................................................... 1
Appendix A: Test Result Record Form........................................................... 1
Appendix B: Specifications.......................................................................... 4

Chapter 1 Test PreparationsRIGOL
DP1308A Performance Verification Manual 1-1
Chapter 1 Test Preparations
This chapter introduces the test preparations as well as the recommended test
devices.
Topics of this chapter:
Self-test and Warm-up
Recommended Test Devices
Voltage and Current Values
Test Result Record

RIGOL Chapter 1 Test Preparations
DP1308A Performance Verification Manual
1-2
Self-test and Warm-up
Make the following preparations before performance verification:
1. Perform self-test to make sure that the instrument can work normally;
2. Warm the instrument up for at least 30 minutes.
Self-test
Connect the instrument to AC power using the power cord provided with the
accessories. Turn on the power switch at the rear panel; then press the power key
at the front panel; the instrument starts and performs self-test. If the instrument
passes the self-test, the user interface is displayed; otherwise, the self-test error
prompt message is displayed.
You can press Utility →→SelfTest →Test to perform self-test after the
instrument starts.
If the self-test fails, make sure that the problems are found and solved and the
instrument passes the self-test before performing the performance verification test.
Warm-up
Warm the instrument up for at least 30 minutes before performing the performance
verification test.

Chapter 1 Test PreparationsRIGOL
DP1308A Performance Verification Manual
1-3
Recommended Test Devices
Please use the recommended test devices in Table 1-1 to test the performance
specifications of DP1308A. If these devices are not present, use devices that fulfill the
“Performance Requirement” in the table below instead.
Table 1-1 Recommended Test Devices
Instrument Performance Requirement Recommended
Instrument
Digital
Oscilloscope
Bandwidth: ≥100 MHz
Minimum Vertical Scale: ≤2mV
Bandwidth Limit: ≥20MHz
RIGOL DS1102E
Digital
Multimeter Reading Resolution: 6
2
1
bit
RIGOL DM3068
Agilent 3458A
Agilent 34411A
RMS Voltmeter Sensitivity: 1mV
Bandwidth: ≥10MHz Agilent 3400A Agilent 3458A
Programmable
Electronic Load 300W Agilent 6060B
AC Source Adjustment Rate >1% Agilent 6811B
Current
Monitoring
Resistor
0.1Ω(Accuracy: 0.1%
, Thermal
Drift: 10ppm) ——

RIGOL Chapter 1 Test Preparations
DP1308A Performance Verification Manual
1-4
Voltage and Current Values
During the test, the voltage and current of the output channel of the power supply
should be set to the specified values. Table 1-2 lists the rated output values and
maximum output values of the voltage and current of each channel.
Table 1-2 Voltage and current values of each channel of DP1308A
Channel Rated Output
Voltage
Max Output
Voltage
Rated Output
Current
Max Output
Current
+6V/5A +6 V +6.3 V 5 A 5.25A
+25V/1A +25 V +26.25 V 1 A 1.05A
-25V/1A -25 V -26.25 V 1 A 1.05A
Test Result Record
Record and keep the test result of each test item. A test result record form which
provides all the test items and their corresponding performance specification limits as
well as spaces for users to record the test results, is provided in Appendix.
Tip:
RIGOL recommends that you photocopy the test results record form before each
test and record the test results on the copies so that this form can be used
repeatedly.

Chapter 2 Constant Voltage Tests RIGOL
DP1308A Performance Verification Manual 2-1
Chapter 2 Constant Voltage Tests
This chapter introduces how to test the specifications of DP1308A under CV mode.
Topics of this chapter:
Preparation
CV Load Adjustment Rate (CV Load Effect)
CV Linear Adjustment Rate (CV Source Effect)
CV Ripple and Noise
Transient Response Time
CV Programming and Readback Accuracy

RIGOL Chapter 2 Constant Voltage Tests
DP1308A Performance Verification Manual
2-2
Preparation
The main parameters of DP1308A requiring test under constant voltage include
constant voltage load adjustment rate, constant voltage linear adjustment rate, ripple
and noise, transient response time as well as programming and readback accuracy.
Before the test, select the appropriate voltage (for the voltages supported by
DP1308A, refer to Table 2-1) via the “voltage selector” at the rear panel of the power
supply according to the AC line voltage of your nation. Connect the device
recommended in Recommended Test Devices according to the figure below under
normal temperature (about 25℃). During the test, set the voltage of the AC source
according to the voltage selected.
DP1308A
+
-
Electronic
Load
+
-
AC Source
Multimeter/
Oscilloscope/
RMS Voltmeter
-+
+
-
+
-
Figure 2-1 Test Connection (CV)
Table 2-1 AC line voltages supported by DP1308A
Voltage 100VAC 115VAC 220VAC 230VAC
Undervoltage 90VAC 104VAC 242VAC 253VAC
Overvoltage 110VAC 127VAC 198VAC 207VAC

Chapter 2 Constant Voltage Tests RIGOL
DP1308A Performance Verification Manual
2-3
CV Load Adjustment Rate (CV Load Effect)
CV load adjustment rate, a static specification, is used to test the output voltage
variation of the power supply caused by the load effect under constant voltage (CV).
During the measurement, the measurement error caused by the output terminal
should be taken into consideration. Figure 2-2 is the schematic diagram of the output
terminal of the power supply. As the output terminal is metallic conductor and has a
certain contact resistance
r∆
, when the output current of the power supply is
I
, the
terminal voltage is
IrVe ×∆=
. Therefore, the voltage test point is generally located
at Ato reduce the error caused by the terminal voltage. Besides, the contact
resistance generated by this terminal and the power output line and voltage feedback
line inside the instrument would cause an offset (Uoffset) of less than 2mV.
Figure 2-2 Output Terminal
Assume that the power supply currently works in CV mode, the output voltage for no
load is U0and for fullload is U1,the load adjustment rate is defined as:
Load Adjustment Rate=
%100
VoltageOutputRated
|| 01 ×
−− offset
UUU
(2-1)
1. Turn off DP1308A. Connect DP1308A, AC source, electronic load and multimeter
according to Figure 2-1. Note that the measurement probe or clip of the
multimeter must be connected to A in Figure 2-2.
2. Turn on the AC source and set its voltage to the AC line voltage.

RIGOL Chapter 2 Constant Voltage Tests
DP1308A Performance Verification Manual
2-4
3. Turn on DP1308A. Press +6V, +25V or -25V at the front panel to select the
channel to be tested. Set the voltage and current of the channel to be tested
according to Table 2-2. Press On/Off under the channel to be tested to enable
power output.
4. Turn on the eletronic load and set the electronic load current to 0A or do not
connect any load device (no load).
5. Turn on the multimeter and select DCV (DC voltage) measurement function. The
output status of the power supply should be CV. Read and record the current
reading U0on the multimeter.
6. Set the electronic load for the output channel’s rated current. The output status of
the power supply should be CV and record the reading U1on the multimeter.
7. Calculate
%100
VoltageOutputRated
|| 01 ×
−− offset
UUU
to get the measurement result of load
adjustment rate. Wherein,
offset
U
(about 2mV) is the offset caused by error.
8. Compare the measurement result with the specification in “Appendix B:
Specifications”. The measurement result should be no greater than 0.01%.
9. Repeat steps 1 to 8 to test the CV load adjustment rates of the other two output
channels.
Table 2-2 Setting and specification of CV load adjustment rate test
Channel +6V/5A +25V/1A -25V/1A
Voltage (V) 6 25 -25
Current (A) 5.25 1.05 1.05
Specification <0.01%+2mV

Chapter 2 Constant Voltage Tests RIGOL
DP1308A Performance Verification Manual
2-5
CV Linear Adjustment Rate (CV Source Effect)
CV linear adjustment rate is used to measure the variation of output voltage of the
power supply due to source effect under constant voltage (CV).
1. Turn off DP1308A. Connect DP1308A, AC source, electronic load and multimeter
according to Figure 2-1. Note that the measurement probe or clip of the
multimeter must be connected to Ain Figure 2-2.
2. Turn on the AC source and set its voltage to the AC line voltage.
3. Turn on DP1308A and press +6V, +25V or -25V at the front panel to select the
channel to be tested. Set the voltage and current of the channel to be tested
according to Table 2-3. Press On/Off under the channel to be tested to enable
power output.
4. Turn on the electronic load and set the electronic load for the output channel’s
rated current.
5. Turn on the multimeter and select DCV measurement function. The output status
of the power supply should be CV. Read and record the current reading U0 on the
multimeter.
6. Adjust the AC source to undervoltage state (namely 10% drop in amplitude, refer
to Table 2-1). The output status of the power supply should be CV. Read and
record the current reading U1on the multimeter.
7. Adjust the AC source to overvoltage state (namely 10% rise in amplitude, refer to
Table 2-1). The output status of the power supply should be CV. Read and record
the current reading U2on the multimeter.
8. Calculate
%100
||
0
01
×
−−
U
UUU
offset
and
%100
||
0
02
×
−−
U
UUU
offset
respectively to
get the measurement results of load adjustment rate. Wherein,
offset
U
(about
2mV) is the offset caused by error.

RIGOL Chapter 2 Constant Voltage Tests
DP1308A Performance Verification Manual
2-6
9. Compare the measurement results with the specification in “Appendix B:
Specifications”. The measurement results should be no greater than 0.01%.
10. Repeat steps 1 to 9 to test the CV linear adjustment rates of the other two output
channels.
Table 2-3 Setting and specification of CV linear adjustment rate test
Channel +6V/5A +25V/1A -25V/1A
Voltage (V) 6 25 -25
Current (A) 5.25 1.05 1.05
Specification <0.01%+2mV