I-Tech IT6163S User manual

1
USER’S GUIDE
High Resolution and High Speed
Programmable Power Supply
Models IT6163S/IT6164S/IT6165S
© Copyright 2005 All Rights Reserved
Ver1.1 /July, 2005/ IT6100-527

2
About your safety .....................................................................................................................................................3
General information.........................................................................................................................................3
Protection from electric shock........................................................................................................................3
Definition of users ............................................................................................................................................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 supplied 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 Disposal...................................................................................................................................10
Multiple Key Instruction.........................................................................................................................10
Function Key Instruction .......................................................................................................................10
3.2 Front-panel Operation Overview...........................................................................................................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 Operation.....................................................................................................................................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 between Power Supply and Computer...................................................................21

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About your safety
Pease review the following safety precautions before operating our equipment.
General information
The following safety precautions should be observed before using this product and any associated
instrumentations. Although some instruments and accessories would be used with non-hazardous
voltages, there are situations where hazardous conditions may be present.
This product is intended for use by qualified personnel who recognize shock hazards and are familiar
with the safety precautions required to avoid possible injury. Read and follow all installation, operation,
and maintenance information carefully before using the product. Refer to this manual for complete
product specifications.
If the product is used in a manner not specified, the protection provided by the product may be
impaired.
Before performing any maintenance, disconnect the line cord and all test cables.
Protection from electric shock
Operators of this instrument 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 operators in these
circumstances must be trained 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 Regulations
To avoid electrical 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.
KEEPAWAY FROM LIVE CIRCUITS.
We cannot accept responsibility for any direct or indirect financial damage or loss of profit that might occur
when using the electronic load.
The instrument chassis and cover must be connected to an 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 instrument. They must be protected from electric shock and contact with
hazardous live circuits.
Service is only to be performed by qualified service personnel.
Safety symbols and terms
Connect it to safety earth ground using the wire recommended 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 danger

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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 delivery. During the warranty period we will, at its option, either repair or replace
products which prove to be defective. For warranty service, with the exception 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 duty and taxes) for products returned to the supplier for warranty service. Except
for products returned to customer from another country, supplier shall pay 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 interfacing, 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 resolution and high speed programmable DC power supplies.
This series have very small size of 2U, and they are equipped with 5 2
1digital voltage meter and m
Ω
meter. That means 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 programmable power supply with low ripple and noise
• Very high accuracy and resolution of 0.1mV/0.1mA
• High rise speed ﹤30mS
• Equipped with 5 2
1digital voltage meter and m
Ω
meter
• 4U small size can be installed in standard 19’’ rack or bench top
• Remote control via USB/RS232/GPIB
• Limit voltage protection
• Over current/temperature protection
• Free software for control and calibration
• Can be used in parallel or series connection

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Chapter1 Quick Reference
1.1 The Front Panel
1
VFD and rotary knob
2
Power switch ON/OFF
3
Number Keys
4
Function Keys
Up, down and Enter key
Input of V/m
Ω
meter
Output terminals
1.2 The Rear Panel
1
4-Pin Trigger and Remote sensing connectors Power socket
2
Power switch (110V / 220V)
3
9-Pin COM port interface connector
4
4-Pin Trigger and Remote sensing connectors
Cooling window
5
5
1
2
3
4
7
1
2
3
4
5
6
7
5
6

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1.3 Preliminary Checkout
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 items with your power supply. If anything is missing, contact
your nearest Sales Office.
□One power cord for your location
□One user’s manual
□Calibration Report
□CD-Rom
□Communication cable (optional)
2. Connect the power cord and turn on the power supply
When you turn on the power supply, the front-panel display will light up briefly while the 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 stroke loss on any annunciator.
3. Checkout Procedure
If the EEPROM was damaged or the latest 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 the power supply in EEPROM is lost, the VFD will display as follows:
If you press the “shift” button, VFD displays the information of the product type, series number version
of software.
Press “Esc” to exit, VFD displays as follows:
The first row is the actual output voltage 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 row is the actual voltage value and current value, the state of the power supply. The second
row is the voltage value tested by voltage meter and the setting voltage of the power supply.
ERR EEPROM
ERROR CAL
Error Config Data
Sourc: XXV XA Meas: XXV
Ver: 1.50 SN:5975002002
0.000V 0.00000A OFF
0.000V 3.000V

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Warning: The power supply is shipped from the factory with a power-line cord that has
a plug appropriate for your location. Your power supply is equipped with a 3-wire
grounding 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 check to ensure that the power supply develops its rated outputs and
properly responds to operation from the front panel.
Voltage Output Checkout
The following steps verify basic voltage functions without power supply.
1) Turn on the power supply.
2) Enable the outputs
Press
On/Off
key to let the ON annunciator and the CV annunciator turn on to light.
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 the same as the set voltage value, and to check if the VFD displayed current
value is nearly zero.
4）Ensure that the voltage can be adjusted from zero to the full rated value.
Current Output Checkout
The following steps check basic current functions with a short across the power supply’s output.
1）Turn on the power supply.
2）Disable the outout
Press
On/Off
key to ensure that the output is disabled. The ON annunciator is turned off.
3) Connect a short across (+) and (-) output terminals with 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 turn on.
6) Adjust the current value.
Set some different voltage values, then wait till the Meter mode to check if the VFD displayed
current value is the same as the set voltage value, and to check if the VFD displayed voltage
value is nearly zero.
7) Ensure that the current can be adjusted from zero to the full rated value.
8) Turn off the power supply and remove the short wire from the output terminals.

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1.5 If the power Supply Does Not Turn On
Use the following steps to help solve problems you might encounter when turning on the instrument. If
you need more help, refer to chapter 6 for instructions on returning the instrument to the supplier for
service.
1. Verify that there is AC power to the power supply.
First, verify that the power cord is firmly plugged into the power receptacle on the rear panel of the
power supply. You should also make sure that the power source you plugged the power supply into is
energized. Then, verify that the power supply is turned on.
2. Verify the power-line voltage 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. Change the voltage setting if it’s not correct.
3. Verify that the correct power-line fuse is installed.
If the fuse was damaged, please see the table below to replace the fuse for your power supply.
Model
Fuse Description(110VAC）
Fuse Description（220VAC）
IT6163S
15A 10A
IT6164S
IT6165S
Chapter 2 Specifications
2.1 Specifications
parameter
IT6163S
IT6164S
IT6165S
Output Ratings
( 0 °C - 40 °C)
Voltage 0~30V 0~60V 0~40V
current 0~40A 0~20A 0~30A
LVP 0~1200W 0~1200W 0~1200W
Load Regulation
±
(
％
of output+offset) voltage <0.05%+25mV <0.05%+15mV <0.05%+20mV
current ≤0.05%+20mA ≤0.05%+10mA ≤0.05%+20mA
Line Regulation
±
(
％
of output+offset)
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
1mV
1mV
current
1mA
0.5mA
1mA
Readback Resolution
voltage
0.5mV
0.5mV
0.5mV
current
0.5mA
0.1mA
0.5mA
Setup Accuracy
±(%of output+offset) voltage ≤0.02%+10mV ≤0.02%+30mV ≤0.02%+10mV
current
≤0.05%+10mA
≤0.05%+5mA
≤0.05%+10mA
Readback Accuracy
±(%of output+offset) voltage 0.02%+15mV 0.02%+20mV 0.02%+15mV
current
0.05%+10mA
0.05%+5mV
0.05%+10 mA
Ripple
(20Hz~20MHz)
voltage
≤5mVp-p
≤6mVp-p
≤5mVp-p
current
≤10mArms
≤5mArms
≤10mArms
Temperature Coefficient
( 0 °C~40 °C)
±(%of output+offset)
voltage ≤0.02%+20mV ≤0.02%+30mV ≤0.02%+20mV
current
≤0.05%+20mA
≤0.05%+10mA
≤0.05%+20mA
Readback Temperature
Coefficient voltage 0.02%+20mV 0.02%+30mV 0.02%+20mV
current
≤0.05%+10mA
≤0.05%+5mA
≤0.05%+10mA
Dimension
（
mm
）
445mmW×180mmH×539mmD
Weight (Kg)
45Kg

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2.2 Supplemental Characteristics
State Storage Memory
Fifteen (50) user-configurable stored stable
Recommended Calibration Interval
Once a year
AC Input Ratings (selectable via switch on the rear panel)
Option Opt.01: 220VAC ± 10%, 47 to 63 Hz
Option Opt.02: 110 VAC ± 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 category II, pollution degree 2 environment. 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 have learned how to install your power supply and do quick start. During the quick start,
you were briefly introduced to operating from the front panel as you learned how to check basic
voltage and current functions. This chapter describes in detail the use of the front-panel keys and
shows how they are used to accomplish power supply operation.
This chapter is divided into the following sections:
Front-Panel Operation Overview,
Setting Voltage
Setting Current
Storing Operation
Menu Operation
On/Off Operation
Remote Sense Function
m
Ω
Meter
5 2
1Digital Voltage Meter

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3.1Keyboard Disposal
Multiple Key Instruction
V/mΩ: 52
1Digital Voltage Meter / m
Ω
Meter
0.1W: The range of m
Ω
Meter is 0.1W
1W: The range of m
Ω
Meter is 1W
10W: The range of m
Ω
Meter is 10W
Function Key Instruction
Set the voltage value
Set the current value
Save the currently data of the power supply to internal register
Recall the data from the internal register
Set the parameter of power supply
On/Off
Set the output state of power supply
Shift
Use it with multiple key
▲：Up key
▼：Down key
Enter： Press it to confirm
Multiple Key Function Key
2211
5544 00
··
88 99
33
66
77
EscEsc V-set
EnterSave Recall
Shift On/Off
I-set
V-set
I-set
Save
Recall
Menu

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3.2 Front-panel Operation Overview
The following section describes an overview of the front-panel keys before operating your power
supply.
1. The power supply is shipped from the factory configured in the front-panel operation mode. At
power-on, the power supply is automatically set to operate in the front-panel operation mode. When
in this mode, the front 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 and remote operation modes will not result in any change in the output
parameters. You can change the front-panel and remote 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, the ON annunciator will turn on.
4. The VFD display shows the present operating status of the power supply with annunciators. Turn on
the power supply, VFD displays two lines data. The first line shows the actual output voltage value,
current value and the state of the power supply. The second line shows the voltage value tested by
the voltage meter and the output 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 very easy
for you to set the constant voltage output. You have 2 solutions to set the constant voltage value.
Solution1：
Step1: Power on the IT6100 series instrument
Step2: Press the ▲and ▼keys to change the value
Solution2:
Step1: Power on the IT6100 series instrument
Step2: Press
V-setV-set
Step3: Use the numeric keys to or ▲and ▼keys to change the voltage value.
Step4: Press
Enter
to confirm.
3.4 Setting Current
The constant current output range is from 0A to the maximum current value of each type. It is very
easy for you to set the constant current output.
Step1. Power on the IT6800 series instrument
Step2. Press
I-setI-set
key
Step3. Use the numeric keys to or use ▲and ▼keys to change the current value
Step4. Press
Enter
key to confirm the value
3.5 Saving and Recalling Operation
You can use
Save
or
Recall
or use the SCPI order *SAV、*RCL to store up to 50 different output
states in storage register locations(1 to 50). If the fast recall function is turned on, you can recall the
saved settings by pressing numerical key （0~9）. You can store the followings: voltage, current, the
maximum output voltage value, the maximum voltage value, the constant voltage value, the constant
current value and the step value of voltage.
9
0
0
Out on/off
9

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You can use
Save
and 0~50 numeric key，press
Enter
, and store the parameter of IT6100
series into the register.
You can use
Recall
and 0~50 numeric key, press
Enter
, and recall the parameter stored before
from the register.
3.6 Menu Operation
3.6.1 Menu Description
Press
MENU
to indicate operation mode. View the menu in VFD, and use ▲and ▼to scroll through the
complete menu list as following. If press , you could get the selected menu function. Press
ESC
back to the previous menu selection page.
MENU
Config
Config Init.
Return to the factory default setup value.
Out Recall
Setting Power-on state of power supply.
On
When users turn on the power supply; its
setup value
will keep the state of last time as users turned
off the
power
supply.
Off<Default>
Disable this function.
PWR-ON Recall
Setting power-on parameter of power supply
On
When users turn on the power supply; its
setup value
will keep the state of last time as users turned
off the
power supply.
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.
On
Lock Rotary knob.
Off< Default >
Unlock Rotary knob.
Remote Sense
Setup voltage measurement Mode.
On
The power supply will measure voltage from the
remote sense connector.
Off< Default >
The power supply will measure input value
from the
front panel connector.
ShortCut Recall
Quickly recall the data stored before
On
Enable this function
Off<Default>
Disable this function
OVP Set
Setting over voltage protection
On
Enable this function
Off< Default >
Disable this function
Meter Rate Set
Setting the speed of power supply
High
High speed
Low< Default >
Low speed
Baudrate set
Setting baud rate
Baudrate 4800 <
ENTER

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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 function
Latching
Live
DFI Source
Discrete Fault Indicator
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 function.
Password=
﹡﹡﹡﹡
Exit
System Set
Max Volt. set
Setup the Maximum Voltage.
Max= ﹡﹡﹡﹡
Step Volt Set
Set voltage step
Step=﹡﹡﹡﹡
Exit
List Set
Call ListFile
Recall list operation file.
Edit ListFile
Edit list operation file.
Continuous
Once
Repeat
Step
Once

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Repeat
Save Mode Set
Users can choose 4 kinds
of memory space to save the list
file.
8 X 25 Steps
4 X 50 Steps
2 X 100 Steps
1 X200 Steps
Exit
Out On Timer
Output timer
，
if you start this function, the power supply will turnoff after the
time you set.
Timer State
Setting POWER ON timer state
On
When users choose the timer state ON, and then
turn on the power supply output, the POWER
ON
TIMER will start working, and when the POWER
ON
TIMER is reach the setup time, the power supply
output will turn off automatically,.
Off< Default >
Timer Set
Setting time of POWER ON timer.
Timer=
﹡﹡
S
Exit
Exit
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 the state of last time as it is turned off. If you select Off, this function is
disabled. Default is On.
Key Sound
This instruction can switch on/off the buzzing sound when you press any key, if you 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
Shift
+
MENU
into menu operation, VFD displays Config, press
ENTER
to confirm.
2）Press▲、▼to select ShortCut Recall，press
ENTER
to confirm.

15
3）Press▲、▼to select On 项，press
ENTER
to confirm.
4）Press
ESC
two times to escape menu operation.
5）Press
V-setV-set
or
I-setI-set
, select
1
to
9
to set voltage value or current value, press
ENTER
to
confirm.
6）Press
Save
, VFD displays Store 1, select
1
to
9
to set the register number（range from 0 to 9）,
press
ENTER
to confirm.
You can recall the data stored before by pressing the register number.
Overvoltage Protection（>OVP Set）
When the output voltage exceeds the constant voltage by 5%, or the connection is unsuccessful 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 voltage protection, the output is off, and buzzer is mooing.
VFD displays as following:
Over Voltage
When the power supply with other power supply is in parallel connection, please disable this function.
Setting Communication Baud Rate (>BAUDRATE)
This function can help you set communication baud rate. There are 4 kinds of baud rate, 4800HZ,
9600HZ, 19200HZ and 38400HZ. Make sure that power’s baud rate is as the same as your computer
before communication. Default baud rate is 4800HZ.
Setting Address(>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
Shift
+
MENU
into menu operation, VFD displays Config, press
ENTER
to
confirm.
2）Press▲、▼to select Address Set, press
ENTER
to confirm.
3）VFD displays Address=＊＊, select
0
to
9
and set address, press
ENTER
to confirm.
4）Press
ESC
two times to escape menu operation.
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 external trigger source for power supply, and can control
the list operation.
RI/DFI：Inhibit Input can control the output state of power supply, Fault Output can find fault of power
supply.
DIGITAL I/O：It can read and control output and input state.

16
Pinmode
Trigger RI/DFI DIGITAL I/O
1
Trigger in
Inhibit Input
Digital Input
2
GND
GND
GND
3
No Use
Fault Output
Digital Output
4
No Use
GND
GND
Trigger Operation (Shift+Trigger)
The power supply has 3 kinds of trigger mode. You must choose trigger source before trigger operating.
Trigger Key: If this function is enabled, press
Shift
+
Trigger
, the power supply will start trigger
operation once.
External trigger signal(TTL): There is a trigger input port on the rear panel. When this function is
enabled, please give this trigger input port a pulse about 5 mS, and the power supply will
start trigger operation once.
Bus: When this function is enabled, and the power supply receives order*TRG or TRIgger, the power
supply will start trigger operation once.
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 state of power supply.
Discrete Fault Indicator
DFI source contains QUES、OPER 、ESB、RQS、OFF.
QUES：The output level of DFI changes along with the state 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 LOCK
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: When shipped from factory, there is no password and function keys are unlocked. The start bit of
your desired password shouldn’t be 0.
List Set
Before you edit the list file, please set trigger source as “immediate” in the menu.
Action:

17
1) Press
Shift
+
Menu
into the menu.
2) Press up or down key to select “Config”, press
Enter
to confirm.
3) Press up or down key to select “Trig Source”, press
Enter
to confirm.
4) Press up or down key to select “Immediat”, press
Enter
to confirm.
You can make the output change order by editing every step value of list operation. 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. The list file can be stored in ROM whose capacity is 4K, and it
can be fast recalled. This store area is divided into A, B, C and D four areas. In 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 signal, the power supply will
start list operation until the list operation is over or a trigger is received again.
Operation：
1）Press
Shift
+
Menu
into menu operation.
2）VFD displays Config，press▼to select List Set，press
Enter
to confirm．
3）VFD displays Call ListFile，press▼to select Edit ListFile， press
Enter
to confirm.
4）VFD displays Continuous，press
Enter
to confirm.
5）VFD displays Repeat，press
Enter
to confirm，select circle operation.
6）VFD displays List Count= _，press numeric key or move the rotary knob, set circle times( in this
example, count is 2)，press
Enter
to confirm.
7）VFD displays1th＝＊．＊＊＊＊V， press numeric key or move the rotary knob, set the maximum
voltage, press
Enter
to confirm.
8）VFD displays 1th＝＊．＊＊＊＊A， press numeric key or move the rotary knob, set the maximum
current, press
Enter
to confirm.
9）VFD displays 1th＝＊mS, press numeric key or move the rotary knob, set delay time, press
Enter
to confirm. The range of delay time is 25mS~6S.
10）VFD displays 2th＝＊．＊＊＊＊V, press numeric key or move the rotary knob, set the maximum
voltage, press
Enter
to confirm.
11）VFD displays 2th＝＊．＊＊＊＊A, press numeric key or move the rotary knob, set the maximum
current, press
Enter
to confirm.
12）VFD displays 2th＝＊mS，press numeric key or move the rotary knob, set delay time, press
Enter
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
Enter
to confirm.
14）Press
Esc
two times to escape menu operation.
15）Press
Shift
+
List
to set the list file, then press
Shift
+
Trigger
to run the list file.
Press
Shift
+
List
to stop.
If you have edited several list files, you can call the list file that you need by “Call ListFile” function in the
menu. Press
Esc
two times to exit menu operation. And then press
Shift
+
List
to set it,
press
Shift
+
Trigger
to run the file that you call. press
Shift
+
List
to stop running.

18
TriggerTrigger
When the list operation mode is STEP, the power supply will come to next step only after it receive a
trigger signal.
Trigger
Trigger
Trigger
Trigger
Trigger
Trigger
Trigger Trigger
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 Operation
If you control the power supply by front panel, you can press
On/Off
and switch the state of output. If
power supply is under remote sense, you can send SCPI order (OUTPut ON|OFF) to change the state
of output.
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 remote sensing connectors on the rear panel and you can use it to measure the
output voltage of the tested instrument. You must set remote sense mode before you start remote test
function.
SENCE
IN
GND
+S -S
TR
+S，-S：Remote sense port

19
IN, GND: trigger port
3.9 Milliohm Mete
SOURCE METER can measure 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
measure it. Wiring diagram as follows:
+ INPUT －
+OUTPUT －
5 ½DVM
100V-MAX
R
There are 3 ranges to be chose: 0.1W、1W、10W.
1）Press
Shift
+V/m
Ω
（if VFD displays＊＊．＊＊V, press
Shift
+V/m
Ω
）, set milliohm meter,
VFD displays Range:＊＊
2）Press
Shift
+0.1W /1W /10W, you can set different range of milliohm meter.
3.10 Voltage Meter
Wiring diagram as follows:
+OUTPUT －
+ INPUT －
5 ½DVM
100V-MAX
Load

20
Press
Shift
+V/m
Ω
（if VFD displays Range: ＊＊，please press
Shift
+V/m
Ω
）, set voltage
meter, VFD displays＊＊．＊＊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 tell 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 interface 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
PC Load
IT-E131 communication cable
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
Power
supply
PC
IT-E132 USB Communication Cable
The DB9 interface connector on the rear panel of power supply is TTL voltage level, you can use
the communication cable (IT-E132) to connect the DB9 interface connector of the power supply
and the USB interface connector of computer for the communication.
PC Load
IT-E131 communication cable
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
COMPUTER
INSTRUMENT
RX
TX
IT-E131 ISOLATED
COMMUNICATION CABLE
TTL(5V)RS232 ISOLATION
859666668889942311
IT
Power
supply
PC
IT-E132 communication cable