ITech IT6163S, IT6164S, IT6165S, IT6162, IT6163 User Manual

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USER’S GUIDE

High Resolution and High Speed

Programmable Power Supply

Models IT6163S/IT6164S/IT6165S

Ver1.1 /July, 2005/ IT6100-527

About your safe ty ..................................................................................................................................................... 3

General inform ation ......................................................................................................................................... 3

Protection from electric shock ........................................................................................................................ 3

Definition of user s ............................................................................................................................................ 3

Certification and Warranty ...................................................................................................................................... 4

Certification ....................................................................................................................................................... 4

Warranty ............................................................................................................................................................ 4

Limitation of Warranty ............................................................................................................................. 4

Introduction ................................................................................................................................................................ 4

Chapter1 Quick Reference ..................................................................................................................................... 5

1.1 The Front Panel ......................................................................................................................................... 5

1.2 The Rear Panel .......................................................................................................................................... 5

1.3 Preliminary Checkout ................................................................................................................................ 6

1. Check the list of s upplied items......................................................................................................... 6

2. Connect the power cord and turn on the power supply ................................................................ 6

3. Checkout Procedure ........................................................................................................................... 6

1.4 Output Checkout ........................................................................................................................................ 7

1.5 If the power Supply Does Not Turn On.................................................................................................. 8

Chapter 2 Specifications ......................................................................................................................................... 8

2.1 Specifications ............................................................................................................................................. 8

2.2 Supplemental Characteristics.................................................................................................................. 9

Chapter 3 Front-panel Operation .......................................................................................................................... 9

3.1Keyboard Dispos al ................................................................................................................................... 10

Multip le Key Instruction ......................................................................................................................... 10

Function Key Instruction ....................................................................................................................... 10

3.2 Front-panel Operation Overv iew........................................................................................................... 11

3.3 Setting Voltage ......................................................................................................................................... 11

3.4 Setting Current ......................................................................................................................................... 11

3.5 Saving and Recalling Operation ........................................................................................................... 11

3.6 Menu Operation ....................................................................................................................................... 12

3.6.1 Menu Description ......................................................................................................................... 12

3.6.2 Menu Function .............................................................................................................................. 14

3.7 Output Operat ion ..................................................................................................................................... 18

3.8 Remote Sense ......................................................................................................................................... 18

3.9 Milliohm Mete ........................................................................................................................................... 19

3.10 Voltage Meter ......................................................................................................................................... 19

Chapter 4 Remote Operation Mode .................................................................................................................... 20

4.1 Communication cable ............................................................................................................................. 20

IT-E131 RS232 Communication Cable .............................................................................................. 20

IT-E132 USB Communication Cable .................................................................................................. 20

IT-E135 GPIB Communication Cable ................................................................................................. 21

4.2 Communication bet wee n Power Supply and Computer ................................................................... 21

About your safety

Pease review the following safety precautions before operating our eq uipment.

General informat ion

The following safety precautions should be obs erved before using this pr oduct and any associated instrumentations. Although some instr uments and accessories would be used with non-hazardous voltages, there ar e situations where hazardous conditions may be pres ent.

This product is inte nded for use by qualified per sonnel who recognize shock hazards and are familiar with the safety precautions required to avoid possible injury. Read and follo w a ll installation, oper ation, and maintenance information carefully befor e using the product. Refer to this manual for complete product spec ifications. If the product is used in a manner not specified, the protect ion provided by the product may be impaired. Before perform ing any maintenance, disconnect the line cord and all test cables.

Protection from el ectric shock

Operators of this i nstrument must be protected from electric shock at all times. The responsible body must ensure that operators are prevented access and/or insulated from every connection point. In some cases, connections must be exposed to potential human contact. Product oper ators in these circumstances m ust be tr ained to protect themselves from the risk of electric shock. If the circuit is capable of operating at or above 1000 volts, no conductive part of the circuit may be exposed.

Safety Regulation s

To avo id electric al shock, do not open the cabinet. Refer servicing to qualified personnel only. To avoid injuries， always disconnect power, discharge circuits, and remove external voltage sources before touching components.

KEEP AWAY FROM LIVE CIRCUITS. We cannot accept responsibility for any direct or indirect financial damage or loss of profit that might occur when usi ng the el e ctr o ni c loa d. The instrument ch assis a nd cover mu st be connected to a n electrical ground.

Definition of users

Responsible body is the individual or group responsible for the use and maintenance of equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately trained. Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use of the inst rument. They must be protect ed from electric shock and contact with hazardous live circuits. Service is only to be performed by qualified service personnel. Safety symbols and term s

Connect it to safety earth ground using the wire rec ommended in the user manual.

The symbol on an instrument indicates that the user should refer to the operating

instructions located in the manual.

High voltage da nger

Certification and Warranty

Certification

We certify that this product met its published specifications at time of shipment from the factory.

Warranty

This instrument product is warranted against defects in material and workmanship for a period of one year from date of deliver y. During the warranty period we will, at its option, either repair or replac e products which prove to be defective. For warranty service, with the excepti on of warranty options, this product must be returned to a service facility designated by us. Customer shall prepay shipping charges by (and shall pay all dut y and taxes) for products r eturned to the supplier for warranty service. Except for products returned to customer from another country, supplier shall pa y for return of products to customer.

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Customer, Customer-supplied software or inter facing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper site preparation and maintenance.

Introduction

IT6100 Series power supplies are high res olution and high speed pr ogrammable DC power supplies . This series have very small size of 2U, and they are equipped with 5

me ter. That mea ns you don’t need to invest extra money to purchase digital. This series offer flexible solution to general laboratory and workshop requirement.

Convenient bench-top features:

• VFD display

• Liner programmabl e power supply with low ripple and noi se

• Very high accuracy and resolution of 0.1mV/0.1mA

• High rise speed ﹤30mS

• Equipped w ith 5

• 4U small si ze can be instal led in standard 19’’ rack or bench top

• Remote cont rol via USB/RS232/GPI B

• Limit vol tage protection

• Over current/temperature protection

• Free software for control and calibration

• Can be used in parallel or series connection

digital voltage meter and m Ω meter

digital voltage meter and m Ω

Chapter1 Quick Reference

Ω

1.1 The Front Panel

VFD and rotary knob Power switch ON/OFF Number Keys Functio n Keys

Up, down and Enter key

Input of V/m

Output terminals

meter

1.2 The Rear Panel

4-Pin Trigger and Remote sensing connectors Power socket Power switch (110V / 220V) 9-Pin COM port interface connector 4-Pin Trigger and Remote sensing connectors

Cooling window

1.3 Preliminary Checkout

ERR EEPROM

ERROR CAL

Error Config Data

The following steps help you verify that the power supply ready for use.

1. Check the list of supplied items

Verify that you have received the following it em s with your power supply. If anyt hing is missing, contact your nearest Sales O ffice.

□ One power cord for your locat ion □ One user’s manual □ Calibration Report □ CD-Rom □ Communication cable (optional)

2. Connect the power cord and turn on the power supply

W hen you turn on the power supply, the front-panel display will light up briefly whi le t he power supply performs its power-on self-test. All the VFD annunciators will light up at once. To review the display with all annunciators, you can check if there is any str oke loss on any annunciator.

3. Checkout Procedure

If the EEPROM was damaged or t he lates t operation data in EEPROM is lost, the VFD will display as follows:

If the calibration data in EEPROM is lost, the VFD will display as follows:

If the latest state of t he power supply in EEPROM is lost, the VFD will display as follows:

If you press the “shift” button, VFD dis pla ys t he i nf or m at io n of the product t ype, series number v ersion of software.

Press “Esc” to exit, VFD displays as follows: The first row is the actual output voltag e value and current value, and the state of power supply; the second row is voltage value measured by voltage meter, and output voltage value set by power supply.

The first r ow is the actual voltage v alue and current v alue, the state of the power supply. T he second row is the voltage value tested by voltage meter and the setting voltag e of the power supply.

Sourc: XXV XA Meas: XXV Ver: 1.50 SN:5975002002

0.000V 0.00000A OFF

0.000V 3.000V

On/Off

Warning: The power supply is shipped from the factor y wit h a power-line cord that has a plug appro priate for your location. Your pow er supply is equipped with a 3-wire groundi ng type power cord; the third conductor being the ground. The power supply is grounded only when the power-line cord is plugged into an appropriate receptacle. Do not operate your power supply without adequate cabinet ground connection.

1.4 Output Checkout

The following procedures chec k to ensure that the power supply develops its rated outputs and

properly responds to operation from the fr ont panel.

Voltage Output Checkout

The following steps verify basic voltage functions without power supply.

1) Turn on the power supply.

2) Enable the outp uts Press

3）Set the voltage value

Set some different voltage values, then wait till the Meter mode to check if the VFD displayed voltage value is t he sam e as the set voltage value, and to check if the VFD displayed current value is nearly zero.

4） Ensure that the v oltage can be adjusted from zero to the full rated value.

Current Output Checkout

The following steps check basic current func tions with a short across the power supply’s output.

1） Turn on the power supply.

）Disable the outout

Press

3) Connect a short across ( +) and (-) output terminals wit h an insulated test lead. Use a wire size sufficient to handle the maximum current.

4) Enable the output.

5) Adjust the voltage value to 1.0 volt.

Adjust the voltage to 1.0 volt to ensure the power supply is in CC operation mode. The CC annunciator will t urn on.

6) Adjust the current value.

Set some different voltage values, then wait till the Meter m ode to check if the VFD displayed current value is t he sam e as the set voltage value, and to check if the VFD displayed voltage value is nearly zero.

7) Ensure that the cu rrent can be adjusted from zero to the ful l rated value.

8) Turn off the power supply and remove the short wire from the output t erminals.

key to let the ON annunciator and the CV annunciator turn on to light.

key to ensure tha t the output is disabled. The ON annunciator is turned off.

1.5 If the power Supply Does Not Turn O n

Model

Fuse Descri ption(110VAC）

Fuse Descript ion（220VAC）

IT6163S

IT6164S

IT6165S

parameter

IT6163S

IT6164S

IT6165S

Line Regulation

voltage

<0.02%+1mV

<0.02%+2mV

<0.02%+1mV

current

<0.01%+1mA

<0.01%+0.5mA

<0.01%+1mA

Setup Resolution

±(%ofoutput+offset)

voltage

1mV

current

1mA

0.5mA

1mA

voltage

0.5mV

current

0.5mA

0.1mA

0.5mA

current

≤0.05%+10mA

≤0.05%+5mA

≤0.05%+10mA

current

0.05%+10mA

0.05%+5mV

0.05%+10 mA

Ripple

voltage

≤5mVp-p

≤6mVp-p

≤5mVp-p

current

≤10mArms

≤5mArms

≤10mArms

current

≤0.05%+20mA

≤0.05%+10mA

≤0.05%+20mA

current

≤0.05%+10mA

≤0.05%+5mA

≤0.05%+10mA

Weight (Kg)

45Kg

Use the following steps to help solve problems you might encounter when turning on the i nstrument. If you need more help, refer to chapter 6 for instructio ns on returning the instrument to the supplier for service.

1. Verify that there is AC power to the power supply.

First, verif y that the power cord is firmly plugged into the power recept acle on the r ear panel of the power supply. You should also make sure that the power source you plugged the power supply into is energized. T hen, verify that the power supply is t urned on.

2. Verify the power-li ne vo ltage setting.

The line voltage is set to the proper value for your country (110VAC or 220VAC) when the power supply is shipped from the factory. Cha nge the volt age setting if it’s not corr ect.

3. Verify that the correct power-line fuse is installed.

If the fuse was damag ed, pleas e see the table below to replace the fuse for your power supply.

15A 10A

Chapter 2 Specifications

2.1 Specifications

Output Ratings

( 0 °C - 40 °C)

Load Regulation

(％of output+offset)

Readback Resolu tio n

Setup Accuracy

±(%of output+offset)

Readback Accura cy

±(%of output+offset)

(20Hz~20MHz)

Temperature Coefficient

( 0 °C~40 °C)

±(%of output+offset)

Readback Tempe rature

Coefficient

Dimension（mm） 445mmW×180mmH×539mmD

Voltage 0~30V 0~60V 0~40V

current 0~40A 0~20A 0~30A

LVP 0~1200W 0~1200W 0~1200W

voltage <0.05%+25mV <0.05%+15mV <0.05%+20mV current ≤0.05%+20mA ≤0.05%+10mA ≤0.05%+20mA

voltage ≤0.02%+10mV ≤0.02%+30mV ≤0.02%+10mV

voltage 0.02%+15mV 0.02%+20mV 0.02%+15mV

voltage ≤0.02%+20mV ≤0.02%+30mV ≤0.02%+20mV

voltage 0.02%+20mV 0.02%+30mV 0.02%+20mV

Ω

2.2 Supplemental Char act er istics

State Storage Memory

Fifteen (50) user-configurable stored stable

Recommended Calibration Interval

Once a year

AC Input Ratings (selectable via switch on the rear pan el)

Option Opt.01: 220VA C ± 10%, 47 to 63 Hz Option Opt.02: 110 VA C ± 10%, 47 to 63 Hz

Cooling

Fan cooled

Operating Temperature

0 to 40 °C

Storage Temperature

-20 to 70 °C.

Environmental Conditions

Designed for indoor use in an installation cat egory II, pollution degree 2 envir onment. Designed to operate at maximum relative humidity of 95% and at altitudes of up to 2000 meters.

Chapter 3 Front-panel Operation

So far you h ave lear ned how to install your power supply and do quick start. During the quick star t, you were briefly introduced to operating from the front panel as you learned how to che ck basic voltage an d current functions. This chapter describes in detai l the use of the front-panel keys and shows how they are used to accompl ish power supply operation.

This chapter is divi ded into the following sections:

 Front-Panel Operation Overview,  Setting Voltage  Setting C urrent  Storing Operation  Menu Operation  On/Off O peration  Remote Sense Function  m

 5

Meter

Digital Volt age Meter

3.1Keyboard Disposal

Ω

Set the voltage val ue

Set the current value

Save the cur rently data of the power supply to int ernal regist er

Recall the data from the inter nal register

Set the par ameter of power supply

On/Off

Set the output state of power supply

Shift

Use it with multiple key

Multiple Key Function Key

2211

5544 00

··

88 99

EscEsc

V-set

EnterSave Recall

Shift On/Off

I-set

V-set

I-set

Multiple Key Instruction

V/mΩ: 5

0.1W: The range of m

Digital Voltage Meter / mΩ Meter

Meter i s 0.1W

1W: The range of m 10W: The range of m

Meter i s 1W

Meter is 10 W

Function Key Instruction

▲：Up key ▼：Down key

Enter：　Press it to confirm

3.2 Front-panel O peration Overview

V-setV-set

Enter

I-setI-set

Enter

Save

Recall

Out on/off

The following section describes an overview of the front-panel keys befor e operating your power supply.

1. The power supply is s hipped from the factory configured in the front-panel operation mode. At power-on, the power supply is automatically set t o operate in the front-panel operati on mode. When in this mode, the fr ont panel keys can be used.

2. When the power supply is in remote operation mode, you cannot use the front-panel. A change between front-panel a nd remote operation modes will not r esult in any change in the output parameters. Y ou can change the front-panel and rem ote operation modes by computer.

3. The output of the power supply can be enabled or disabled from the front panel by pressing

key. When the output is on, t he ON annunciator will turn on.

4. The VFD display shows t he present operat ing st atus of the power supply wit h annunc iator s. Turn on

the power supply, VFD displays two lines data. The firs t li ne sho ws t he ac tual out put v olta ge value, current value and the state of the power supply. The second line shows the voltage value tested by the voltage meter and the outp ut value of the power supply.

3.3 Setting Voltage

The constant voltage range is from 0V to the maximum voltage value of each model. It is ver y easy for you to set the constant voltag e output. You have 2 solutions t o set the constant voltage value.

Solution1

Step1: Power on the IT6100 series instrum ent Step2: Press the ▲ and ▼ keys to change the value

Solution2:

Step1: Power on the IT6100 series instrum ent Step2: Press

Step3: Use the numeric keys to or ▲ and ▼ keys to change the voltage value. Step4: Press

：

to confirm.

3.4 Setting Curr ent

The c onst ant cur rent outp ut ra nge is from 0A to the maximum current value of eac h type. It is very easy for you to s et the constant current output.

Step1. Power on the IT6800 series instrum ent

Step2. Press

Step3. Use the numeric keys to or use ▲and ▼keys to change the current value Step4. Press

key

key to confirm the value

3.5 Saving and Recal ling Operation

You c an use states in storage register locat ions(1 to 5 0). If the fas t rec all fu nctio n is t urned o n, yo u can re call t he saved sett ings by pr essing numerical k ey （0~9）. You can store the followings: voltage, curr ent, the maximum output voltag e value, the maximum v oltage value, the constant v oltage value, the constant current value and the st ep value of voltage.

or use the SCPI order *SAV、*RCL to store up to 50 different output

You can use

Save

Enter

Recall

Enter

ESC

Config

Config Init.

Return to t he factory default setup value.

Out Recall

Setting Power-on state of power supply.

setup value

off the

supply.

Off<Default>

Disable this funct ion.

PWR-ON Recall

Setting power-on parameter of power supply

setup value

off the

Off<Default>

Disable this function.

Key Sound Set

Keypad sound setting.

On<Default>

Enable key sound.

Off

Disable key sound

Knob Lock Set

Setup Rotary knob lock state .

Lock Rotary knob.

Off< Default >

Unlock Rotary knob.

Remote Sense

Setup voltage measurement Mode.

The power supply will measure voltage from the remote sense connector.

Off< Default >

fr om the

front panel connector.

ShortCut Recall

Quickly recall t he data stored before

Enable this function

Off<Default>

Disable this funct ion

OVP Set

Setting over v oltage protection

Enable this function

Off< Default >

Disable this funct ion

Meter Rate Set

Setting the speed of power supply

High

High speed

Low< Default >

Low speed

Baudrate set

Setting baud rate

Baudrate 4800 <

ENTER

and 0~50 numeric key，press

, and store the parameter of IT6100

series into the reg ister. You c an use

and 0~50 numeric key, press

, and recall the parameter stored before

from the register.

3.6 Menu Operation

3.6.1 Menu Description

Press complete menu list as following. If press , you could get the selected menu function. Press

back to the previous menu selection page.

to indicate operation mode. View the menu in VFD, and u se ▲ and ▼to scroll through the

W hen us er s t urn o n the power supply; its will k eep the state of last time as use rs t urned

power

W hen us er s t urn o n the power supply; its will k eep the state of last time as use rs t urned power supply.

The power s upply will measur e input value

Default >

Baudrate 9600

Baudrate 19200

Baudrate 38400

Comm. Parity

Command parity setting.

None< Default >

Even

Odd

Address Set

Setting communication address(range from 0to 254)

Address=＊＊

Port Mode

Select function of port

Trigger< Def >

RI/DIF

DIGITAL I/O

Trig Source

Setting trigger mode

Immediat<Def>

Trigger signals from

Shift

Trigger

key

External

Trigger signals from the TRIG connector in the rear panel.

Bus

Communication command trigger mode.

RI Mode

Control the output mode

Off< Default >

Disable this funct ion

Latching

Live

DFI Source

Discrete Fault Indic ator

Off< Default >

QUES

Question Bit

OPER

Operation Bit

ESB

Event State Bit

RQS

Require Bit

Key Lock Set

Setting keypad password. Press

Enter

directly to disable the key lock fun ction.

Password=　

Exit

System Set

Max Volt. set

Setup the Maximum Voltage.

Max=　﹡﹡﹡﹡

Step Volt Set

Set voltage step

Exit

List Set

Call ListFile

Recall list oper ation file.

Edit ListFile

Edit list operation file.

Continuous

Once

Repeat

Step

Once

Step=﹡﹡﹡﹡

﹡﹡﹡﹡

Repeat

Save Mode Set

Users can choose 4 ki nds

of memory space to s av e the list

file.

8 X 25 Steps

4 X 50 Steps

2 X 100 Steps

1 X200 Steps

Exit

Out On Timer

time you set.

Timer State

Setting POWER ON timer state

When users choose the timer state ON, and then

ON ON

output will turn off automatically,.

Off< Default >

Timer Set

Setting time of POWER ON timer.

Timer=

Exit

Shift

ENTER

Output t i mer，if yo u s t a rt t hi s funct i on, t he p o w er supply will turnof f a f t er t he

turn on the power supply output, the POWER TIMER wi ll start working, and when the POWER TIMER is reach the setup time, the power supply

﹡﹡

3.6.2 Menu Function

Output Recall

This function can help you set the output state when the power supply is powered on. If you select On, the power supply will keep t he state of last time as it is turned off. If you select Off, t his funct ion is disabled. Default is On.

Key Sound

This instruction can switch on/off the buzzing sound whe n you press any key, if yo u select On, the buzzer will sound when any key was pressed. If you select Off, the buzzer will not sound when the keys were pressed. Default is On.

ShortCut Recall　

This function can help you recall the data stored before. Option:

1） Press

2） Press▲、▼to select ShortCut Recall，press

into menu operation, VFD displays Config, press

to confirm.

3） Press▲、▼to select On 项，press

ENTER

ESC

V-setV-set

I-setI-set

ENTER

Save

ENTER

Shift

ENTER

ESC

to confirm.

4） Press 5） Press

two times to esc ape m enu operatio n.

, select1to9to set voltage value or current value, press

confirm.

6） Press

press

, VFD displays Store 1 , select1to9to set the register number（range from 0 to 9）,

to confirm.

You can recall the data stored before by pressing the regist er num ber.

Overvolt age Prot ection（>OVP Set）

When the output voltage exc eeds t he constant voltage by 5%, or t he connection is unsuccess f ul under remote sense mode, the power supply will protect itself automatically. The power supply must be turned on again. When the power is in over voltag e protection, the outp ut is off, and buzzer is mooing. VFD disp lays as following:

Over Voltage

W hen the power supply with other power supply is in paral lel c onnection, please disable this function.

Setting Communi cation Baud Rate (>BAUDRATE)

This function can help you set communication baud rate. There are 4 kinds of baud rate, 4800HZ,

9600HZ, 19200HZ and 38400HZ. Mak e sure that power’s baud rat e is as the same as your computer

before communicatio n. Default baud rate is 4800HZ.

Setting A ddress(>ADDRESS)

This instruction can set the communication address for each power supply. The address range is from 0 to 30. Before the communication, you must make sure that there is same address between the power supply and the computer. Default address is 0.

Option:

1） Press

into menu operation, VFD displays Config, press

confirm.

2） Press▲、▼to select Address Set, press 3） VFD displays Address=＊＊, select0to9and set address, press

4） Press

two times to esc ape m enu operatio n.

to confirm.

Port Mode

The level of the port on the rear panel is TTL, and the port has 3 kinds of function as follows: TRIGGER: pin1 and pin 2 can be used as the exter nal tr igg er sourc e for power supply, and can control

the list operat ion.

RI/DFI：Inhibit Input can control the output state of power supply, Faul t O utp ut can find fault of power

supply.

DIGITAL I/O：It can read and control output and input state.

Pinmode

Trigger RI/DFI DIG ITAL I/O

Trigger in

Inhibit Input

Digital I npu t

GND

No Use

Fault Out put

Digital Output

No Use

GND

Shift

Trigger

Tr i gge r Operation (Shift+Trigger)

The power supply has 3 kinds of trigger mode. You must choose trigger source before trigger operating.

Trigger Key: If this funct ion is enabled, press

operation once.

External trigger signal(TTL): There is a trigger input port on the r ear pane l. When this funct ion is

enabled, pleas e giv e this t rigg er input port a pulse abo ut 5 m S, and the power suppl y will start trigger operation once.

Bus: W hen this function is enabled, and the power s upply receives or der*TRG or TRIgger, the power

supply will start trigger operation once.

, the power supply will start trigger

Remote Inhibit

RI input has 3 modes: LATCHING、L IVE、OFF LATCHING：When the level of RI port changes from high to low, the output of power supply is off. LIVE：The output state of power supply changes along with the level of RI port. If the level of RI is high,

the output is on; and the level of RI is low, the output of power supply is off.

OFF： The level state of RI do not affect the output st ate of power supply.

Discrete Fault Indicator

DFI source contains QUES、OPER 、ESB、RQS、OFF. QUES：The output level of DFI c hang es along with t he s tat e of QUES bit. When QUES bit is 1, DFI

outputs low level. When QUES bit is 0, DFI outputs high level. OPER：The output level of DFI changes along with the state of OPER bit. ESB：The output level of DFI changes along with the state of ESB bit. RQS：The output level of DFI changes along with the state of RQS bit. OFF：The output level of DFI remains high.

KEY LO CK

This instruction can set a password (1 through 4 digits) to lock the function keys operation. After setting the password, all the function keys on the front panel will be locked except the OUT on/off key. You must enter the correct password to unlock them, then you can continue to do the function key operation. If you don’t want to lock the function keys, please don’t press any number key when you enter the >KEY LOCK instruction, just press ENTER key to unlock it.

Note: W hen shipped from factory, there is no password and function keys are unlock ed. The start bit of your desired password shouldn’t be 0.

List Set

Before you edit the list file, please set trigg er source as “immediate” in the menu. Action:

1) Press

Shift

Enter

Shift

Enter

Esc

Shift

List

Shift

Trigger

Shift

List

Esc

Shift

List

Shift

Trigger

Shift

List

2) Press up or down key to select “Config”, press

3) Press up or down key to select “Trig Source”, press

4) Press up or down key to select “Immediat”, press

into the menu.

to confirm.

to confirm. You ca n m ak e the output change order by editing every step value of list oper ation. The parameter of list operation includes the name of list file, output step (no more than 200 steps), step time (the minimum is 1mS) and every step value. T he list f ile can be stor ed in ROM whose capacity is 4K, and it can be fast recalled. This stor e area is divided into A, B, C and D four areas. I n area A, there is only 1 group whose capacity is 4Kb. In area B, there are 2 groups and each group’s capacity is 2Kb. In area C, there 4 groups and each group’s capacity is 1Kb. In area D, there are 8 groups and each group’s capacity is 512Kb. If the list operation mode is CONTINUOUS, when you receiving a trigger sig nal, the power supply will start list operation until the list operat ion is over or a trigger is received again.

Operation

1） Press 2） VFD displays Config，press▼to select List Set，press

：

into menu operation.

to confirm．

3） VFD displays Call ListFile，press▼to select Edit ListFile，　press 4） VFD displays Continuous，press 5） VFD displays Repeat，press

to confirm.

to confirm，select circle operation.

to confirm.

6） VFD displays List Count= _，press numeric key or move the rotary knob, set circle times( in this

example, count is 2)，press

to confirm.

7） VFD displays1th＝＊．＊＊＊＊V，　press numeric key or move the rotary knob, set the maximum

voltage, press

to confirm.

8） VFD displays 1th＝＊．＊＊＊＊A，　press numeric key or move the rotary knob, set the maximum

current, press

to confirm.

9） VFD displays 1th＝＊mS, press numeric key or move the rotary knob, set delay time, press

to confirm. The range of delay time is 25mS~6S.

10） VFD displays 2th＝＊．＊＊＊＊V, press numeric key or move the rotary knob, s et the maximum

voltage, press

to confirm.

11） VFD displays 2th＝＊．＊＊＊＊A, press numeric key or move the rotary knob, set the maximum

current, press

to confirm.

12） VFD displays 2th＝＊mS，press numeric key or move the rotary knob, set delay time, press

to confirm. The range of delay time is 25mS~6S.

13） VFD display Store File_，press numeric key or move the rotary knob, set the register number

（1 to 8）, press

14） Press 15） Press

Press

two times to escape menu operation.

+ +

to confirm.

to set the list file, then press to stop.

to run the list file.

If you have edited several list files, you can call the list file that you need by “Call ListFile” function in the menu. Press

press

two times to exit menu operation. And then press

to run the file that you call. press

to stop running.

to set it,

TriggerTrigger

Trigger

Trigger Trigger

On/Off

SENCE

GND

When the list operation mode is STEP, t he power s upply will com e to next step only after it rec e i v e a trigger signal.

Digital I/O

When the digital port of the power supply mode is DIGITALI/O and power supply is under remote sense, you could send SCPI order （DIGital:INPut[:STATe?] and DIGital:OUTPut[:STATe?]）to read and set the state of output and input port.

3.7 Output Operat ion

If you control the power supply by front panel, you can press power supply is under r emot e sens e , you can s e nd SCPI order (OUT Put ON|OF F) to change the s tate of output.

and switch the state of output. If

3.8 Remote Sense

The wire connected the power supply and electronic load will produce voltage difference when the current of the power supply is so big. In order to make the measurement accuracy much accurate, there are 4 pin trigger and rem ote sensing connect ors on the rear panel and you can use it to m easure the output voltage of the test ed instrument. You must set remote sense mode bef ore you start remote test function.

+S，-S：Remote sense port

IN, GND: t rigger port

INPUT －

OUTPUT －

5 ½ DVM

100V-MAX

Shift

OUTPUT －

INPUT －

5 ½ DVM

100V-MAX

Load

3.9 Milliohm Mete

SOURCE METER can meas ure resistant value accurately and the most resistant value it can measure is 10Ω. In order to protect the resistant, please select the power range of the resistant before you me asure it. Wiring dia gram as fo llows:

There are 3 ranges t o be chose: 0.1W、1W、10W.

1） Press

VFD displays Range:

2） Press

+V/mΩ（if VFD displays＊＊．＊＊V, press

＊＊

+0.1W /1W /10W, you can set different range of milliohm meter.

+V/mΩ）, set milliohm meter,

3.10 Voltage Meter

Wiring diagram as follows:

Press

Shift

PC Load

IT-E131 communication cable

COMPUTER

INSTRUM ENT

IT-E131 ISOLATED COMMUNICATION CABLE

TTL(5V)RS232 ISOLATION

859666668889942311

COMPUTER

INSTRUM ENT

IT-E131 ISOLATED COMMUNICATION CABLE

TTL(5V)RS232 ISOLATION

859666668889942311

Power supply

PC Load

IT-E131 communication cable

COMPUTER

INSTRUM ENT

IT-E131 ISOLATED COMMUNICATION CABLE

TTL(5V)R S232 ISOLATION

859666668889942311

COMPUTER

INSTRUM ENT

IT-E131 ISOLATED COMMUNICATION CABLE

TTL(5V)R S232 ISOLATION

859666668889942311

Power supply

IT-E132 communication cable

meter, VFD displays

+V/mΩ（if VFD displays Range: ＊＊，please press

+V/mΩ）, set voltage

＊＊．＊＊V, you can begin test the voltage value, the max voltage value is 40V.

Chapter 4 Remote Operation Mode

The DB9 interface connector on the rear panel of the power supply can be transferred to RS-232 interface, the following information will t ell you how to use the computer to control the output of the power supply.

4.1 Communication cable

IT-E131 RS232 Communication Cable

The DB9 interfac e connector on the rear panel of power supply is TTL voltage level, you can use the communication cable (IT-E131) to connect the DB9 interface connector of the power supply and the RS-232 interface connector of computer for the communication.

Computer side TTL→RS232 Cable (IT -E131) PS side

IT-E132 USB Communication Cable

The DB9 interface connector on the rear panel of power supply is TTL v oltage level, you can use the communication cable (IT-E132) to connect the DB9 interface connector of the power supply and the USB interface c onnector of computer for the commu nication.

IT-E135 GPIB Communication Cable

IT-E135 ISOLATED

Serial /IEEE 488 Controller

IT-E135 outer communication adapter

COM interface of Power supply

GPIB line

The DB9 interface connector on the rear panel of power supply is TTL voltage level, you can use the GPIB communication cable (IT-E135) to connect the DB9 interface connector of the power supply, and then connect the G PIB interface of the IT-E135 and computer with GPIB/IEEE 488 line for the communi cation.

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Frequently Asked Questions

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