Rigol DP832A, DP831A User guide

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RIGOL

User’s Guide

DP800A Series Programmable Linear

DC Power Supply

Mar. 2013

RIGOL Technologies, Inc.

RIGOL

Guaranty and Declaration

Trademark Information

RIGOL is a registered trademark of RIGOL Technologies, Inc.

Publication Number

UGH03102-1110

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 inci dental or conse quential

in connection with the fu r nis hing , use or perfo rman ce of this manual as well as any information contained.

 Any part of this document is forbidden to be copied or ph otocopied or

rearranged without prior written approval of RIGOL.

Product Certification

RIGOL guar antees this pr oduct confo rms 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.

If you have any problem or requirement when using our products, please contact RIGOL T echnologies, Inc. or your local distributors, or visit: www.rigol.com.

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Safety Requirement

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 connecte d to it. To prevent potential haza rds, please use the instrument only specified by this manual.

Use Proper Power Cord.

Only the power cord designed for the instrument and authorized by 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 e ssential t o connect the ea rth terminal of power cord to the Protective Earth terminal before any inputs or outputs.

Observe All Terminal Ratings.

To avoid fire or shock hazard, observe all ratings an d markers on the instrume nt and check your manual for more information about ratings before connecting.

Replace the Fuse.

Please use fuse that matches the voltage selected at the voltage selector of the power supply at the rear panel.

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.

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 oper at ions. 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

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device. So please keep well ventilated and inspect the intake and fan regularly.

Do Not Operate in Wet Conditions.

In order to av oid short circuiting t o the interi or 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 operat e the device away from an explosive atmospher e.

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 disc harge protective are a environme nt to avoid damages induced by static discharges. Always ground both the internal and external conductors of the cable to release static before connecting.

Handling Safety.

Please handle with care during transportation to avoid damages to buttons, knob interfaces and other parts on the panels.

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CAUTION WARNING

CAUTION

indicates a potential dama ge to the inst rument or ot her property mi ght

Hazardous

Safety

Protective

Chassis

Test

Safety Terms and Symbols

Terms in this Ma n ual. These terms may appear in this manual:

WARNING

Warning state ments indicate the conditions or practices that could result i n injury or loss of life.

Caution statements indicate the c onditions or practic es that coul d result i n damage to this product or other property.

Terms on the Product. These terms may appear on the Product:

DANGER

Symbols on the Product. These symbols may appear on the product:

indicates an injury or hazard may immediately happen. indicates an injury or hazard may be accessible potentially.

occur.

Voltage

Warning

Earth Terminal

Ground

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To avoid damages to the instrument, do not expose them to liquids which

WARNING

General Care and Cleaning

General Care:

Do not store or leave the instrument in where the instrument will be exposed to direct sunlight for long periods of time.

Cleaning:

Clean the instrument regularly according to its operating conditions. To clean the exterior surface, perform the following steps:

1. Disconnect the instrument from all power sources.

2. Clean the loose dust on the outside of the ins trument with a lint - free cloth (with

a mild detergent or water). When cleaning the LCD, take care to a void sca rifying it.

CAUTION

have cau s ticity.

To avoid injury resulting from short circuit, make sure the instrument is completely dry before reconnecting to a power source.

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Environmental Consideratio ns

The following symbol indicates that this product complies with the applicable European Union requirements according to Directives 2002 /96/EC on waste electrical and electronic equipment (WEEE) and batteries.

Product End-of-Life Handling

The equipment may contain substances that could be harmf ul to the envi ron m ent or human health. In order to avoid release of such substances into the environment and harm to human health, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately. Please contact your local authorities for disposal or recycling information.

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DP800A Series Overview

DP800A series is high-performance programmable linea r DC power supply. DP800A series which provides clear user interface, superb performance specification s, various analysis functions as well as various communication interfaces can fulfill versatile test requirements.

Main Features: User-friendly Design:

 3.5 inches TFT display, can display multiple parameters and states at the same

time

 Support Chinese/English interfaces and input methods  Novel and exquisite industrial design and easy operation  Provide waveform display function to provide real-time and dynamic d isplay of

the output voltage/current waveform, clearly showing the output state and tendency of the instrument in together with the digital display of the voltage, current and power values

 Provide dial display function, indicating the current output state using the dial

pointer by simulating the traditional power display mode

 Provide on-line help system for easy acquisition of help information

Multiple Safety Protection:

 Provide overvoltage/overcurrent protection function; users can set the

overvoltage and overcurrent parameters to realize effective protection of the load

 Provide seco nd ary over-temperature protection function to realize double

over-temperatu re protection of the s of t ware and hardware

 Provide intelligent fan speed control function; judge and control the fan speed

automatically according to the working condition to effectively reduce the fan noise

 Provide fan failure check and alar m fu nction  Provide keyboard lock function to avoid misoperation

Various Functions and Superb Performance:

 Multi-channel output; up to 200W total output power; the output of each

channel can be controlled independently

 Superb load regulation rate and linear regulatio n r ate  Provide ultra-low output ripples an d noise  Provide timing output function and support infinite and specified number of

cycles of output

 Provide output track function  Provide delay on/off output function and support infinite or specified number of

cycles of channel on/off toggle

 Provide built-in digital trigger to realize digital trigger input and trigger output

functions

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 Provide built-in on-line analyzer to perform on-line analysis of various statistic

parameters

 Provide built-in monitor to monitor the output according to the user-defined

monitor condition

 Provide built-in recorder to perfor m background recor di ng of the output state

after power-on according to certain record period

 Provide de di cat ed p res et key to perf o rm one-ke y reset and one-key recall of the

commonly used output voltage and current configurations

 Support serial and parallel output functions  Support on-line self-test and manual calibration functions  Provide store and recall function  Support voltage and current linear programmable functions

Complete In te rface Configu rations and Flexible Control Method:

 Standard configuration interfaces: USB Host, USB Device, LAN, RS232, Digital

I/O

 Support to extend a GPIB interface via the USB-GPIB int e rface conve rt e r

(option)

 Support USB st orage device storage  Support SCPI remote command control  Conform to LXI-C class instrument standard  Provide standard 9 pin RS232 interface with flow control function  Provide 4-wire digital I/O interface which supports the trigger input/output

function

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Tip

Document Overview

Chapter 1 Quick Start

Introduce the appearance and dimensions, front panel, rear panel, power connection , power-on inspection and user interface of DP800A.

Chapter 2 Front Panel Ope rations

Introduce the function and operation method of each key at the front panel of DP800A in detail.

Chapter 3 Remote Control

Introduce how to realize the remote control of the instrument.

Chapter 4 Troubleshooting

Introduce the possible failures and their solutions when using DP800A.

Chapter 5 Specifications

List the specifications of DP800A.

Chapter 6 Appendix

Provide the accessory list, warranty information as well as service and support information of DP800A.

Index

Provide keyword se a rch to quickly loca t e th e d e s ired information.

For the newest version of this manual, download it from www.rigol.com.

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Model

Channel

Channel Output Voltage/Current

Format Conventions in this Manual

1. Button

The function key at the front panel is denoted by the format of “Button Name (Bold) + Text Box” in the manual, for example, Utility denotes the “System Auxiliary Function Setting” key.

2. Menu

The menu item is denoted in two modes in this manual. (1) The menu item can be denoted by the format of “Menu Word (Bold ) +

Character Shading”, for e x ampl e , System denotes the “System” item under Utility.

(2) The menu item can be denote by the screenshot of the menu key, for

example,

3. Operation Step

The next step of the operation is denoted by an arrow “” in the manual. For example, Utility  System denotes pressing Utility at the front panel and then pressing System.

Content Conventions in this Manual

DP800A series programmable linear DC power sup pl y includes the following m odels . In this manual, DP831A is taken as an example to illustrate the functions and operating methods of DP800A series.

DP831A 3 8V/5A, 30V/2A, -30V/2A DP832A 3 30V/3A, 30V/3A, 5V/3A

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Contents

Guaranty and Declaration ......................................................................... I

Safety Requirement ................................................................................ II

General Safety Summary ........................................................................... II

Safety Terms and Symbols ....................................................................... IV

General Care and Cleaning ........................................................................ V

Environmental Considerations ................................................................... VI

DP800A Series Overview ....................................................................... VII

Document Overview ............................................................................... IX

Chapter 1 Quick Start ......................................................................... 1-1

General Inspection ................................................................................ 1-2

Appearance and Dimensions ................................................................... 1-3

Front Panel ........................................................................................... 1-4

Rear Panel ........................................................................................... 1-11

To Connect to Power ............................................................................. 1-13

Power-on Inspection ............................................................................. 1-13

To Replace the Fuse ............................................................................. 1-14

User Interface ...................................................................................... 1-15

To Use the Built-in Help System ............................................................. 1-17

Chapter 2 Front Panel Operations ...................................................... 2-1

Constant Voltage Output ........................................................................ 2-2

Constant Current Output ........................................................................ 2-4

Track Function ...................................................................................... 2-6

Timer and Delayer ................................................................................. 2-7

To Set the Timer Parameters ............................................................ 2-8

To Enable the Timer ....................................................................... 2-16

To Set the Delayer Parameters ........................................................ 2-17

To Enable the Delayer .................................................................... 2-20

Advanced Functions .............................................................................. 2-21

Recorder ....................................................................................... 2-22

Analyzer ........................................................................................ 2-23

Monitor ......................................................................................... 2-26

Trigger .......................................................................................... 2-27

Display Setting ..................................................................................... 2-31

Brightness ..................................................................................... 2-31

Contrast ........................................................................................ 2-31

RGB Luminance ............................................................................. 2-31

Display Mo de ................................................................................. 2-32

User-defined Start-up Interface ....................................................... 2-32

Store and Recall ................................................................................... 2-34

Browser ........................................................................................ 2-35

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File Type ....................................................................................... 2-35

Save ............................................................................................. 2-36

Read ............................................................................................ 2-38

Delete .......................................................................................... 2-38

Copy ............................................................................................ 2-38

Paste ............................................................................................ 2-39

Utility .................................................................................................. 2-40

I/O Configuration .......................................................................... 2-41

System Setting .............................................................................. 2-47

System Information ....................................................................... 2-48

System Language .......................................................................... 2-48

Test/Calibration ............................................................................. 2-49

Print ............................................................................................. 2-49

Preset Setting................................................................................ 2-50

Option .......................................................................................... 2-55

Chapter 3 Remote Control ................................................................. 3-1

Remote Control via USB .......................................................................... 3-2

Remote Control via LAN .......................................................................... 3-5

Remote Control via GPIB ......................................................................... 3-9

Remote Control via RS232 .................................................................... 3-11

Chapter 4 Troubleshooting ................................................................ 4-1

Chapter 5 Specifications .................................................................... 5-1

DP831A Specifications ............................................................................ 5-1

DP832A Specifications ............................................................................ 5-3

Chapter 6 Appendix ........................................................................... 6-1

Appendix A: Accessories and Options ....................................................... 6-1

Append i x B: Warranty ............................................................................. 6-2

Appendix C: Any Question or Comment? .................................................. 6-3

Index ........................................................................................................ 1

XII DP800A User’s Guide

Chapter 1 Quick Start RIGOL

Chapter 1 Quick Start

The contents of this chapter are as follows:

 General Inspection  Appearance and Dimensions  Front Panel  Rear Panel  To Connect to Power  Power-on Inspection  To Replace the Fuse  User Interface  To Use the Built-in Help System

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General Inspection

1. Inspect the shipping container for damage

Keep the damaged shipping container or cushioning material until the contents of the shipment have been checked for completeness and the instrument has passed both ele ctrical and mechanical tests.

The consigner or carrier shall be liable for the damage to instrument resulting from shipment. RIGOL woul d n ot be responsible for free maintenance/rework or replacement of the unit.

2. Inspect the instrument

In case of any damage, or defect, or failure, notify your RIGOL sales representative.

3. Check the accessories

Please check the accessories according to the packi ng l is t s. If t he accessories are incomplete o r damaged, please contact your RIGOL sales representative.

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Appearance and Dimensions

Figure 1-1 Front View Unit: mm

Figure 1-2 Side View Unit: mm

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Front Panel

The front panel of DP800A is as shown in Figure 1-3. This section gives a brief introduction of the function of each part at the front panel.

1 2 3 4

11 10 9 8 7 6 5

Figure 1-3 DP831A Front P anel

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Press this key to select CH1 and set the parameters of this channel,

Press this key to select CH3 and set the parameters of this channel,

1. LCD

3.5 inches TFT display. It is used to display the system parameter setting, system output state, menu items, prompt messages, etc.

2. Channel Selection and Output Switch

such as voltage, current and overvoltage/overcurrent protection.

Press this key to select CH2 and set the parameters of this channel, such as voltage, current and overvoltage/overcurrent protection.

such as voltage, current and overvoltage/overcurrent protection.

Press this key to enable or disable the output of the corresponding channel.

Press this key and the prompt message asking whether to enable the outputs of all the channels will be displayed. Press OK to enable the outputs of all the channels. Press this key again, disa ble the outputs of all the channels.

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3. Parameter In p ut Area

The parameter input area is as shown in the figure below. This area includes the direction keys (unit selection keys), numeric keyboard and knob.

(1) Direction keys and unit selection keys

Direction keys: move the cursor. When setting parameters, use the up/down direction keys to increase or reduce the value at the cursor. Unit selection keys: whe n usi ng the numeric keyboard to input parameters, the keys are use d to ente r the voltage units V and mV and the cu rrent units A and mA.

(2) Numeric Keyboard

Ring-type numeric keyboard: include numbers 0-9 and the decimal point. Press the corresponding key to input the number.

(3) Knob

When setting parameters, rotate the knob to inc rease or decrease the valu e of the digit at the cursor. When browsing the settin g o bje cts (timer parameters, delayer parameters, filename input, etc), rotate the knob to quickly move the cursor.

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4. Preset

Restore all the settings of the instrument to default values or recall the user-defined channel voltage/current configurations.

5. OK

Confirm the parameter setting. Press and hold this key to lock the front panel k eys; at this point,

6. Back

the front panel keys (except the output on/off key channel and

) are not available. Press and hold this key

of each

again to unlock the front panel keys. When the keyboard lock password is enabled, you need to input the correct password (2012) to unlock the front panel keys.

Delete the character currently before the cursor. When the instrument is in remote mode, p ress this ke y to return to local mode.

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7. Output Terminals

(1) (2) (3) (4)

(1) Output the voltage and current of CH1. (2) This terminal is connected to the instrument chassis and ground wire

(power cord ground termina l ) and is in grounded state. (3) Output the voltage and current of CH2. (4) Output the voltage and current of CH3.

Connection methods of the output terminal:

Method 1: Connect the test lead to A of the output terminal.

Method 2: Rotate the outer nut of the output terminal counterclockwise and connect the test lead to B of the output terminal; then, rotate the outer nut of the output terminal clockwise. This connection method can eliminate the error caused by the resistance of the output terminal.

Note: Connect the positive terminal of the test lead with the (+) terminal of the channel output and connect the negative terminal of the test lead with the (-) terminal of the channel output.

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Press this key to enter the display parameter setting interface.

Press this key to enter the file store and recall interface. You can Press this key to enter the advanced function setting interface.

8. Function Menu Area

Users can set the luminance, contrast, RGB luminance and display mode. Besides, you can also define the start-up interface.

save, read, delete, copy and paste files. The file types available for storage include state file, record file, timer file and delay file. The instrument supports internal and external storage and recall.

Press this key to enter the system auxiliary function setting menu. Users can set the remote interface parameters, system parameters and print parameters. Besides, users can also calibrate the instrument, view system information, define the recall configuration of Preset and install options.

Users can set the recorder, analyzer, monitor and trigger parameters.

Press this key to enter the timer setting interf ace. Users can set the timer and delayer p arameters.

Press this key to open the built-in help system and press the desired k ey t o ge t t he co rr es pon din g h el p i nf o rmation. F or detailed introductions, refer to “To Use the Built-in Help System”.

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9. Display Mode Switch/Return to the Main Interface

Switch between the current display mode and dial display mode. Besides, when the instrument is in a function interface (any

interface under Timer, , Display, Store and Utility), press this key to exit the f unction interf ace and return to the main interface.

10. Menu Keys

The menu keys c o rrespond to t he menus above them . P ress any menu key to selec t the corresponding menu.

11. Power Switch Key

Turn on or off the instrument.

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10 9 8 7

1 2 3 4 5 6

Rear Panel

The rear panel of DP800A is as shown in Figure 1-4 and the introduction of each part is as shown in Table 1-1.

Figure 1-4 DP831A Rear Panel

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Connect the instrument (as “slave” device) to external

For different models of instrument or when different

Table 1-1 DP831A Rear Panel Explanation

No. Name Explanation

1 LAN Interf ace

The instrument is connected to the local network to realize remote control.

2 USB DEVICE

USB device (such as: PC) via this interface to realize remote contr ol .

Connect the instrument (as “host” device) to external

3 USB HOST

USB device (such as: USB storage device) via this interface.

4 Digital I/O

Digital I/O interface, used to realize the trigger input and trigger output function.

Serial communication interface. The instrument is

5 RS232 Interface

connected to the PC via this int erface to realize remo te control.

Select the specification of the input voltage. DP800A supports three kinds of input voltages; When the AC line is 100Vac+

6 Voltage Selector

selector to 100; When the AC line is 115Vac+ selector to 115; When the AC line is 230Vac+ set the voltage selector to 230.

7 Power Socket AC power input interface.

8 Fuse

input voltages are selected, the specifications of the fuses are different.

9 Fan 10

Input Power Requirement

Corresponding relations of the input AC power frequency, voltage and the specification of the fuse.

10%, set the voltage 10%, set the voltage

10% (maximum 250VAC),

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Tip

To Connect to Power

1. Input power requirement

DP800A series power supply can accept three kinds of AC power supplies: 50Hz–60Hz frequency; 100V, 115V and 230V voltages.

2. Check the voltage selector at the rear panel

Before connecting to power, make sure that the setting voltage of the voltage selector at the rear panel matches the input voltage.

3. Check the fuse

When the instrument leaves factory, proper fuse is installed. Please check whether the fuse matches the input voltage according to the “Input Power Requirement” at the rear panel.

4. Connect the instrument power cord

Connect the instrument to AC power supply using the power cord provided in the accessories.

WARNING

To avoid electric shock, make sure that the instrument is correctly grounded.

Power-on Inspection

Press the power switch at the front panel, the instrument starts and executes self-test. If the instrument passes the self-test, the welcome interface will be displayed; otherwise, the corresponding self-test failure information (including the top board, bottom board, fan and temperature) will be displayed.

When powering on the ins trument after powering off it, make sure that the time interval between the two operations is greater than 5s.

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WARNING

To Replace the Fuse

To replace the fuse, follow the steps below.

1. Turn off the instrument and remove the power cord.

2. Insert a small straight screwdrive r into th e slot at the pow er socke t and pri ze out the fuse seat gently.

Fuse Seat Fuse

3. Adjust the power voltage selector manually to select the correct voltage scale.

4. Take out the fuse and replace it with a specified fuse (for the corresponding relations between the input voltage and fuse specification, refer to the “Input Power R e quirement” at the rear panel).

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To avoid personal injuries, cut off the power supply before replacing the fuse; to avoid electric shock or fire, select the proper power supply specification and replace a fuse corresponding to this specification before connecting to pow er.

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8 9 10 11

User Interface

DP800A series power supply provides three kinds of display modes (normal, waveform and dial). The default is normal and press Display  Di sp Mode to s et the display mode to “Waveform” or “Dial”. This section introduces the interface layout under the normal display mode (as shown in

1 2

5 6

Figure 1-5 DP831A User Interface

Figure 1-8 and Table 1-2).

When the current display mode is “Normal” or “Waveform”, press at the front panel to switch between the current display mode and dial display mode.

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Voltage and current setting values

Overvoltage and overcurrent protection setting values

Actual output voltage

Channel currently selected

Status bar. Display the system status labels.

Table 1-2 DP831A User Interface Explanation

4 Actual output current 5 Actual output power 6 Channel output mode 7 Menu bar 8 Channel number 9 Channel output status

: over-temperature protection is enabled

: the front panel is locked.

: the network is connected. : USB device is recognized.

: the beeper is enabled.

: the beeper is disabled.

: the instrument is in remote mode.

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To Use the Built-in Help System

The built-in help s ystem provides help inf ormation f or any f ront panel k ey (except the parameter input area) and menu keys for users to quickly obtain the function prompts of the function keys or menus.

Obtain the help information of any key Press Help to illuminate it and press the desired key to get the corresponding help

information; at the same time, the backlight of Help goes off . Press to exit the help system.

Built-in help interface

Press Help to illuminate it and press Help again to open the built -in help interface. Press the up/down direction keys to select the desired help topic and press View to view the corresponding help information.

The help topics include:

1. View the last displayed message.

2. View error queue of the remote commands.

3. Get the help information of a key.

4. Storage m anagement.

5. Abbreviations list.

6. Get technical support from RIGOL.

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Chapter 2 Front Panel Operations RIGOL

Chapter 2 Front Panel Operations

The contents of this chapter are as follows:

 Constant Voltage Output  Constant Current Output  Track Function  Timer and Delayer  Advanced Functions  Display Setting  Store and Recall  Utility

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Constant Voltage Output

DP800A series power supply provides three output modes: constant voltage output (CV), constant current output (CC) and critical mode (UR). In CV mode, the output voltage equals the volta ge set ting v alue a nd the output current is determine d by th e load; in CC mode, the output current equals the current s etting v alue a nd the outpu t voltage is determined by the load; UR is the critical mode between CV and CC. This section introduces the operation method in constant v olt age outp u t m ode.

Operation Method:

1. Turn on the power switch to start the instrument.

2. Select the channel Select the proper output channel according to the desired output voltage. Pre ss the corresponding channel selection key; at this point, this channel, its channel number and output state are high-lighted on the screen.

3. Set the voltage Method 1 Press Voltage and use the left/right direction keys to move the cursor; then, rotate the knob to set the voltage and the default unit is V.

Method 2 Press Voltage, use the numeric keyboard to input the desired voltage and press

V or mV or press the unit selection key or to select the desired unit. Besides, you can also press OK to select the default unit V. During the input, press Back to delete the character currently before the cursor and press Cancel to cancel t he input.

4. Set the current Method 1 Press Current and use the left/right direction keys to move the cursor; then, rotate the knob to set the current and the default unit is A.

Method 2 Press Current, use the numeric k eyboard to i nput the desire d current and press

A or mA or press the unit selection key or to select the desired unit. Besides, you can also press OK to select the default unit A. During the input, press Back to delete the character currently before the cursor and press Cancel to cancel t he input.

5. Set the overcurrent protection Press OCP to set the proper overcurrent protection value. For the setting

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CAUTION

Tip

value, the power supply will swit ch to CC output mode aut omatically. At this point,

method, refer to “Set the current”. Press OCP again to enable the ove rcurrent protection function and the output will be turned off automatically when the actual output current is greater than the overcurrent protection value.

6. Connect the output terminals As shown in the figure below, connect the load to the output terminals of the corresponding channel.

CAUTION

To avoid damaging the instrument or the device connected to it, pay

attention to the polarity when connecting.

7. Turn on the output Turn on the output of the corresponding channel and the actual output voltage, output current, output power as well as the output mode (CV) are high-lighted in the user interface.

Warning

To avoid electric shock, please turn on the output switch after the output terminals are correctly connected.

When the fan stops, the channel switch can not be turned on; otherwise, “The fan stops, stop the output!” will be displayed.

8. Check the output mode In constant voltage output mode, the output mode displayed should be “CV”; if “CC” is displayed, you can increase the current setting value properly and the power supply will switch to CV mode automatically.

In CV output mode, when the load current is greater than the current setting the output current equals the current set ting value a nd the output v oltage redu ces

proportionally.

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CAUTION

Constant Current Output

In constant current output mode, the output current equals t he cur rent setting v alue and the output voltage is determined by the load. This section introduces the operation method in constant current output mo de.

Operation Method:

1. Turn on the power switch to start the instrument.

2. Select the channel Select the proper output channel accordi ng t o the desired output current. Press the corresponding channel selection key; at this point, this channel, its channel number and output state are high-lighted in the center of the screen.

3. Set the voltage Press Voltage to set proper voltage according to “S et the voltage” in “Constant Voltage Out put”.

4. Set the current Press Current to set proper c u rrent according to “Set the current” in “Constant Voltage Output”.

5. Set the overvoltage protection Press OVP to set the proper over voltage protection value. For the setting method, refer to “Set the voltage” in “Constant Voltage Output”. Press OVP again to enable the overvoltage protection function and the output will be turned off automatically when the actual output voltage is greater than the overvoltage protection value.

6. Connect the output terminals As shown in the figure below, connect the load to the output terminals of the corresponding channel.

7. Turn on the output

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To avoid damaging the instrument or the device connected to it, pay attention to the polarity when connecting.

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Warning

CAUTION

Tip

value, the power supply will swit ch to CV output mode automati cally. At this point,

Turn on the output of the corresponding channel and the actual output voltage, output current, output power as well as the output mode (CC) are high-lighted in the user interface.

To avoid electric shock, please turn on the output switch after the output terminals are correctly connected.

When the fan stops, the channel switch can not be turned on; otherwise, “The fan stops, stop the output!” will be displayed.

8. Check the output mode In constant current output mode, the output mode displayed should be “CC”; if “CV” is displayed, you can increase the voltage setting value properly and the power supply will switch to CC mode automatically.

In CC output mode, when the load voltage is greater than the voltage setting the output voltage equals the volta ge setting v alue a nd the output current reduces

proportionally.

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Model

CH1

CH2

CH3

DP832A

Support

Not support

When the track f unction is enabled, the volta ge of the t racking channe l cannot

Track Function

Some of the DP800A channels support the output track function (as shown in the table below).

DP831A Not support Support Support

For two channels supporting the track function, when the track function of one channel (the tracked channel) is enabled, the voltage setting value of the other channel (the tracking channel) will change accordingly when the voltage setting value of this channel is changed. By default, the track function is disabled and it is usually used to provide symmetric voltage for the calculation amplifier or other circuits.

Operation Method (Take DP831A for example):

1. Turn on the power switch to start the instrument.

2. Enable the track function Select CH3 and press Track to enable the track fun ction. At t his point, the t rac k status label

3. Set the voltage Press Voltage to set proper voltage. At this point, the voltage of CH2 changes accordingly. For example, set the voltage of CH3 to -5V and the voltage of CH2 will change to +5V automatically.

4. Disable the track function Select CH3 and press Track to disable the track function.

is displayed in the CH2 area in the user interface.

Tip

 The track function onl y tracks the voltage setting value and the actual output

voltage will not be affected.



be set.

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Tip

The timer function and delayer function are mutually exclusive. When the timer is

Timer and Delayer

DP800A provide s the timer and delayer functions. When the timer is enabled, the instrument outputs the preset voltage and current

values (at most 2048 groups). Users can set the number of output groups of the timer as well as the voltage, current and timing time of each group. Besides, the instrument provides various built-in output templets and users can sel e ct and edit the templet as well as create timer parameters based on the templet. The instrument will output according to the parameters currently created.

When the delayer is enabled, the instrument enables or disables the output according to the preset state and delay time (at most 2048 groups). Users can set the number of output groups of the delayer as well as the state and delay time of each group.

Users can store the edited timer parameters (timer file, with the suffix “*.RTF”) and delayer parameters (delay file, with the suffix “*.RDF”) in internal or external memory and recall them when required.

Press Timer to illuminate it. The timer and delayer setting interface is displ ayed.

1. Timer Set: To Set the Timer Parameters

2. Timer: To En able the Timer

3. Delay Set: To Set the Delayer Parameters

4. Delayer: To Enable the Delayer

enabled, Delayer is gra yed out and disabled; when the delayer is en abled, Timer is grayed out and disabled.

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To Set the Timer Parameters

Press Timer  Timer Set to enter the timer parameter setting interface as shown in the figure below. The channel currently selected is displayed in the status bar. Press the channel selection keys at the front panel to switch channel. This interface provide s timer parameter preview; the horizontal axis represents time and the vertical axis represents v oltage a nd current; users ca n view the values on t he current page of the parameter list.

Timer Parameter Preview Channel Currently Selected Timer Parameter List

Figure 2-1 Timer Parameter Setting Interface

Number of Groups

The number of groups is defined as the number of groups of preset voltage and current values that the power supply outputs in each cycle. Press Groups and use the knob or numeric keyboard to input the value. The range is from 1 to 2048.

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Number of Cycles

The number of cycles is defined as the number of times that the i nstrument performs timing output according to the preset voltage and current. Press Cycles to set the number of cycles to “Infinite” or use the knob or numeri c keyboard to input t he value . The range is from 1 to 99999.

 The total number of groups in each timing output = the number of groups ×

the number of cycles

 The power supply wil l terminate the timer function when the total number of

groups of output s is finished. At this point, the state of the power supply depends on the setting of End State.

End State

The end state refers to the state of the instrument after it finishes outputting the total number of gr oups of voltage an d cur rent v alues when t he num be r of cy cles is a specif ied value. Press End State to select “Outp Off” or “Last”.  Outp Off: the instrument turns off the output automatically after finishing the

output.

 Last: the instrument stops at the output state of the last group after finishing

the output.

Note: When the number of cycles is set to “Infinite”, the end state is invalid.

To Manually Edit the Timer Parameters

You can e dit the timer parameters manually . Press Parameter and use the left/right direction keys to select the number (No.) in the timer parameter list, use the up/down direction keys to select the voltage (Volt), current (Curr) and time ( Set) of the current group respectively and use the numeric keyboard or direction keys and knob to input the desired value. Use the same method to set the parameters of the other groups.

You need to set the parameters of number 0 to number (P-1); wherein, P is the number of output groups currently set. Only 6 groups of parameters can be

displaye d on each page of the timer parameter list an d you can press view and set the parameters of the other groups. This interface provides timer parameter preview; the horizontal axis represents time and the vertical axis represents voltage and current; users can view the v alues on the current page of the parameter list.

or to

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To Edit the Timer Parameters using Templet

The instrument provides various built-in output templets and users can select and edit the templet as well as create timer parameters based on the templet. The instrument will output according to the parameters currently created.

Press Timer  Timer Set and press Templet to open t h e templet edit menu.

1. Select the editing object Press Edit Obj to select “Voltage” or “current”.

 Voltage: when it is selected, press Current and use the numeric keyboard

or direction keys and kn ob to set the current value. Then, sele ct the templet and edit the templet parameters. The interface displays the voltage preview.

 Current: when it is selected, press Voltage and use the numeric keyboard

or direction keys an d knob to set the voltage v alue. Then, s elect the templet and edit the templet parameters. The interface displays the current preview.

2. Select the templet

Press Type to select the desired templet, including Sine, Pulse, Ramp, Stair Up, Stair Dn, StairUpDn, Exp Rise and Exp Fall.

 Sine

The Sine waveform is as shown in the figure below. The instrument determines the Sine amplitude according to the maximum and minimum currently set and determines the Sine pe ri od according t o the total number of points (denoted by P) and the time interval currently set, thus determining the Sine w av eform. When creating par ameters, the instrument draws P values from the preset Sine waveform according to the current time interval.

 Pulse

The Pulse waveform is as shown in the figure below. The timer parameters created from Pulse wavef orm only contain two points. The first point: the amplitude (voltage or cu rrent) is determined by the high level set; the time equals the pulse width currently set. The second point: the amplitude (voltage or current) is determined by the low level set; the t ime equals the period currently s et minus the pulse wi dth currently set.

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Tip

Symmetry=t/T*100%

When Pulse is selected, if you want t o output more than 2 groups of timer parameters, you can output the timer parameters created from the Pulse templet repeatedly by increasing the number of cycles.

 Ramp

The Ramp waveform is as shown in the figure below. The instrument determines the amplitude of the Ramp according to the maximum and minimum currently set, determines the period according to the total number of points (deno t ed by P) and the time interval currently set and determines the Ramp waveform according to the symmetry (denoted by

Sym) currently set. When creating parameters, the instrument draws

[1]

int(P*Sym)

values from the rising edge of the preset Ramp waveform at the same time interval and draws P- int(P*Sym) values from the fa lling edge of the preset Ramp waveform at the same time interval. The timing time is determined by the time interval currently set.

[1]

Note

: int(P*Sym) refers to rounding P*Sym (discard the decimal part).

 Stair Up

The Stair Up waveform is as shown in the figure below. The instrument determines the Stair Up waveform accor ding to the maximum (denoted by

MAX), minimum (denoted by MIN), total number of p oints (den ote d by P, P≥10) and time interval currently set and creates P parameters from MIN

to MAX at the step of (MAX-MIN)/(P-1). The timing time is determined by the time interval currently set.

Stair Up

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 Stair Dn

The Stair Dn waveform is as shown in the figure below. The instrument determines the Stair Dn waveform according to the maximum (denoted by MAX), minimum (denoted by MIN), total number of points (denoted by P) and time interval currently set and creates P parameters from MIN to MAX at the step of (MAX-MIN)/(P-1). The timing time is determined by the time interval currently set.

Stair Dn

 StairUpDn

The StairUpDn waveform is as shown in the figure below. The instrument determines the StairUpDn waveform according to the maximum (denoted by MAX), minimum (denoted by MIN), total number of points (denoted by P) and time interval currently set and creates P parameters. When P is an odd number, the value increase from MIN to MAX at the step of

(MAX-MIN)/int(P/2)

[1]

and then reduces to MIN at the same step. When P is an even number, the value increases from MIN to MAX at the step of (MAX-MIN)/int(P/2-1) and then reduces to MIN at the step of (MAX-MIN)/int(P/2). The timing ti me is deter mined by the time inter v al currently set.

StairUpDn

[1]

Note

: int(P/2) indicates rounding P/2.

 Exp Rise

The Exp Rise waveform is as shown in the figure below. The instrument determines the Exp Rise waveform according to the maximum (denoted by MAX), minimum (denoted by MIN), total number of points (denoted by P) and rise index (denoted by RiseIndex) currently set. The wavefo r m function is (MAX-MIN)*[1-e

-i*RiseIndex/P

]; wherein, i is independent

variable and creates P groups of parameters from 0 to (P-1). The timing time is determined by the time interval currently set.

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Note

Exp Rise

 Exp Fall

The Exp Fall waveform is as shown in the figure below. The instrument determines the Exp Fall waveform according to the maximum (denoted by MAX), minimum (denoted by MIN), total number of points (denoted by P) and fall index (denoted by FallIndex) currently set. The waveform function is (MAX-MIN)*e

-i*FallIndex/P

; wherein, i is independent variable and creates P groups of parameters from 0 to (P-1). The timing time is determined by the time interval currently set.

Exp Fall

When the templet c urrently sele cted is Exp Rise or Exp Fall, the timer parameters created cannot reach the maximum or minimum due to the characteristic of the exponential function. The ran ge of the timer parameters created is related to the rise index or fall index currently set. The larger the rise index or fall index is, the larger the range of the tim er parameters will be, as shown in the figures below (maximum=8, minimum=0, total number of points=100, rise index/fall index are 1, 4, 7 and 10 respectively).

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Templet

Parameter

Sine

Max Value, Min Value, Points, Interv a l, Inverted

StairUpDn

Max Value, Min Value, Points, Interval

Exp Rise

Max Value, Min Value, Points, Interval, Rise Index

3. Edit the templet parameters

After selecting the desired templet, set the templet parameters. Fo r different templets, the parameters to be set are different as shown in Table 2-1.

Table 2-1 Templet Parameters

Pulse Hi Level, Lo Level, Width, Period, Inverted Ramp Max Value, Min Value, Points, Interval, Symmetry, Inverted Stair Up Max Value, Min Value, Points, Interval Stair Dn Max Value, Min Value, Points, Interval

Exp Fall Max Value, Min Value, Points, Interval, Fall Index

 Max Value

Set the maximum voltage or current of the templet currently selected. The range is related to the channel currently selected.

 Min Value

Set the minimum voltage or current of the templet currently selected. The range is related to the channel currently selected. The minimum cannot be greater than the maximum currently set.

 Points

The total number of points refers to the number of groups of timer parameters created using the templet currently selected. The range is from 10 to 1048.

When the total number of points ( denote d by P) and the current number of output groups (denoted by G) are different, P groups of parameters will be created using the templet and then, the number of output groups will change to P automatically.

 Interval

The interval refers to the time required for the instrument to output each group of ti mer parameters created using the templet currently selected and the range is from 1s to 99999s.

 Inverted

When the templet currently selected is Sine, Pulse or Ramp, if Inverted is enabled, the instrument will first turn the preset waveform upside do wn and then create timer parameters.

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 Hi Level

When the templet currently selected is Pulse, set the high level of the Pulse and the range is related to the channel currently selected.

 Lo Level

When the templet currently selected is Pulse, set the low level of the Pulse and the range is related to the channel currently selected. The low level should not be greater than the high level currently set.

 Width

When the templet currently selected is Pulse, set the pulse width of the Pulse (namely the du ratio n of high level withi n a period). The range is from 1 to (Period-1) and the unit is s econd.

 Period

When the templet currently selected is Pulse, set the period of the Pulse and the range is from 2s to 99999s.

 Symmetry

When the templet currently selected is Ramp, set the symmetry of the Ramp (namely the ratio of the dura tion of the rising edge within a period to the whole period) and the range is from 0% to 100%.

 Rise Index

When the templet currently selected is ExpRise, set the r ise index of the ExpRise and the range is from 0 to 10.

 Fall Index

When the templet currently selected is ExpFall, set the fall index of the ExpFall and the range is from 0 to 10.

4. Create the timer parameters

After setting all the parameters, press Construct to construct th e timer parameters. The timer parameters constructed are displayed in the timer parameter list as shown in

Figure 2-2.

Save and Read

You can store the timer parameters edited manually or created using the templet in internal or external memory and recall them when required.

1. Save

After editing the timer parameters, press Save to enter the store and recal l interface, the file type is fixed at “*.rtf” and please save the file according to the introduction in “

Store and Recall”.

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Tip

2. Read

Press Read to enter the st ore and recall int erface , the file type is fixed at “*.rtf” and please read the desired file according to the introduction in “

Recall”. Users can edit the timer file read.

Store and

To Enable the Timer

After setting the timer parameters, pr es s Timer  Timer to enable the timing output. The timing output interface is as shown in the figure below.

Figure 2-2 Timing Output Interface

 Enabling the timer will change the output value of the channel; make sur e

that the change in the output value will not affect the device connected to the power supply be fore enabling the timer.

 The timing output is valid only when both the timer and the channel output

are turned on.

 When the timer is enabled, the timer parameters cannot be modified and

Delayer is grayed out and disabled.

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To Set the Delayer Parameters

Press Timer  Delay Set to enter the delayer para meter setting interface as shown in the figure below. The channel currently selected is displayed in the status bar. Press the channel selection keys to switch channel. This interface provides delayer parameter preview. Users can view the values on the current page of the delayer parameter list. High level indicates turning on the output and low level indicates turning off the output.

Delayer Parameter Preview Channel Currently Selected Delayer Parameter List

Figure 2-3 Delayer Parameter Setting Interface