YO IE ENTERPRISE CORP., LTD
USER MANUAL
YI-55 Series Programmable DC Power Supply
YI-5511/YI-5512/YI-5513/YI-5531/
YI-5551/YI-5552/YI-5553/
YI-5571/YI-5572/YI-5573/YI-5574
宥億企業股份有限公司 YO IE ENTERPRISE CORP., LTD
Tel: +886-2-7746-3368
Fax:+886-2-2557-7497
E-mail: sales@yoie.com.tw
Web: www.yoie.com.tw
地址:103 台北市大同區寧夏路 61 號 2 樓
Add: 2F., No.61, Ningxia Rd., Datong Dist., Taipei City 103, Taiwan (R.O.C.)
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YI-55 Series Programmable DC Power Supply
Content
Chapter 1 Introduction ......................................................................................................................... 3
Chapter 2 Technical Specifications ..................................................................................................... 4
2.1 Main Technical Specification ........................................................................................................ 4
2.2 Supplemental Characteristics....................................................................................................... 7
2.3 YI-55 Power Supply Dimension.................................................................................................... 7
Chapter 3 Quick Start ........................................................................................................................ 10
3.1 Front Panel and Rear Panel ....................................................................................................... 10
3.2 Preliminary Checkout ................................................................................................................. 11
3.3 If the Power Supply Does Not Turn On ...................................................................................... 11
3.4 How to Adjust the Carrying Handle ............................................................................................ 12
3.5 How to Rackmount the Instrument ............................................................................................. 12
Chapter 4 Panel Operation................................................................................................................ 14
4.1 Key Layout .................................................................................................................................. 14
4.2 Front-panel Operation Overview ................................................................................................ 15
4.3 Constant Voltage Operation ....................................................................................................... 15
4.4 Constant Current Operation ....................................................................................................... 16
4.5 Saving and Recalling Operation................................................................................................. 16
4.6 Menu Operation .......................................................................................................................... 16
4.6.1 Menu Description ................................................................................................................. 16
4.6.2 Menu Function ..................................................................................................................... 19
4.7 Output On-Off Operation ............................................................................................................ 23
4.8 Remote Measurement Function ................................................................................................. 23
4.9 Milliohmmeter Function .............................................................................................................. 24
4.10 Voltmeter Function ................................................................................................................... 25
Chapter 5 Remote Operation Mode .................................................................................................. 26
5.1 YI-131/YI-132/YI-133 Communication Cable ............................................................................. 26
5.2 Communication between Power Supply and PC ....................................................................... 28
Chapter 6 SCPI Communication Protocal ......................................................................................... 30
6.1 SCPI Communication Command Introduction ........................................................................... 30
6.2 Command Introduction of YI-55 Power Supply .......................................................................... 31
6.2.1 Basic command (IEEE-488.2 Common Command Set) ..................................................... 31
6.2.2 System Command ............................................................................................................... 31
6.2.3 Measurement Command ..................................................................................................... 32
6.2.4 Setting Command ................................................................................................................ 33
6.2.5 List Operation Related Command ....................................................................................... 36
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YO IE ENTERPRISE CORP., LTD
Chapter 1
Introduction
YI-55 series power supply is high performance single-output programmable DC power supply with
communication interface, possessing the character of fast rise time speed (The rise speed of YI-5511
power supply can be less than 10mS and the YI-5551 can be less than 20mS). The combination of
bench-top and system features in YI-55 power supplies provides versatile solutions for your design
and test requirements. The YI-55 series can not only be programmed through the keyboard on the
panel, but also be functioned as voltmeter and milliohmmeter, which will bring great convenience to
the users. As a regeneration product of ordinary programmable power supplies, YI-55 series power
supply is more cost-effective.
YI-5531 power supply, a new generation of programmable linear power supply, are designed with high
speed dynamic programming output(Voltage 0-30V, 1ms rising time), high current accuracy (0.001mA
resolution) and low internal resistance, which can satisfy all the test requirements. Meanwhile, the
voltage level switch works without relay, which will cause the fast switch between high voltage and low
voltage. Moreover, YI-5531 power supply provides the best solutions for cellphone research,
micro-electronics lab,research institue and special users requiring power supply with low current
buthigh accuracy.
Features
Low ripple and noise
High resolution and accuracy (0.1mV/0.01mA, YI-5531 reaches up to 0.001mA)
Built-in a high-accuracy 5 1/2 voltmeter and milliohmmeter
Supporting high-accuracy and dynamic programming output
High-luminance VFD screen and two lines& four ways display
Smart fan will be automatically initiated according to the temperature
Supporting remote voltage compensation and multidata storage
Supporting external trigger input and output
Power-on-self-test, software calibration and standard rack mountable
Supporting RS232/RS485/USB interface
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YI-55 Series Programmable DC Power Supply
Chapter 2
Technical Specifications
2.1 Main Technical Specification
YI-551X series power supply technical specification table
Model
YI-5511
YI-5512
YI-5513
YI-5531
Voltage
0-30V
0-75V
0-150V
0-30V
Current
0-5A
0-2A
0-1A
0-1A
Voltage
<0.01%+0.5mV
<0.01%+0.5mV
<0.01%+0.5mV
<0.01%+0.5mV
Current
<0.01%+0.1mA
<0.01%+0.1mA
<0.01%+0.1mA
<0.01%+0.1mA
Voltage
0.5mV
1mV
2mV
0.5mV
Current
0.1mA
0.05mA
0.01mA
0.01mA
Voltage
0.1mV
0.1mV
1mV
0.1mV
Current
0.01mA
0.01mA
0.01mA
0.001mA
Voltage
0.01%+2mV
0.01%+5mV
0.01%+10mV
0.01%+2mV
Current
0.05%+1mA
0.05%+0.5mA
0.05%+0.1mA
0.05%+0.1mA
Voltage
0.02%+5mV
0.02%+15mV
0.02%+35mV
0.02%+5mV
Current
0.1%+5mA
0.05%+2mA
0.05%+1mA
0.02%+1mA
Voltage
3mvp-p
5mvp-p
10mvp-p
10mvp-p
Current
2mA rms
1mA rms
0.5mA rms
0.5mA rms
Output Rating
Load
Regulation
Setting Value
Resolution
Readback
Value
Resolution
Setting Value
Accuracy
Readback
Value Accuracy
Ripple
Voltmeter
Accuracy
Milliohmmeter
Accuracy
Working
Condition
Power Required
0-12V Accuracy: 0.02%+2mV
0-58V Accuracy: 0.02%+5mV
10W. 0-1000mΩ Accuracy: 0.2%+3mΩ
1000-10000 mΩ Accuracy: 0.2%+6mΩ
Weight
6.5Kg
Dimension
214mmW x 101.5mmH x 365mmD
0-40°C; 0-90%RH
AC 120V/220V±10%; 50/60HZ
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YO IE ENTERPRISE CORP., LTD
YI-555X series power supply technical specification table
Model
YI-5551
YI-5552
YI-5553
Voltage
0-6V
0-30V
0-75V
Current
0-60A
0-20A
0-8A
Voltage
<0.01%+1mV
<0.01%+1mV
<0.01%+1mV
Current
<0.01%+0.1mA
<0.01%+0.1mA
<0.01%+0.1mA
Output Rating
Load Regulation
Setting Value
Resolution
Voltage
0.1mV
0.5mV
1mV
Current
1mA
0.5mA
0.2mA
Readback Value
Voltage
0.1mV
0.1mV
0.1mV
Resolution
Current
0.1mA
0.1mA
0.1mA
Setting Value
Accuracy
Voltage
0.01%+1mV
0.01%+5mV
0.01%+10mV
Current
0.05%+6mA
0.05%+2mA
0.05%+1mA
Voltage
0.02%+2mV
0.02%+5mV
0.02%+15mV
Current
0.05%+45mA
0.05%+20mA
0.05%+8mA
Voltage
3mvp-p
5mvp-p
7mvp-p
Current
15mA rms
7mA rms
4mA rms
Readback Value
Accuracy
Milliohmmeter
Accuracy
0-12V Accuracy: 0.02%+2mV
0-58V Accuracy: 0.02%+5mV
10W. 0-1000mΩ Accuracy: 0.2%+3mΩ
1000-10000 mΩ Accuracy: 0.2%+6mΩ
Working Condition
0-40°C; 0-90%RH
Power Required
AC 120V/220V+10%; 50/60HZ
Weight
28Kg
Dimension
428mmW×88mmH×453.5mmD
Voltmeter Accuracy
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YI-55 Series Programmable DC Power Supply
YI-557X series power supply technical specification table
Model
YI-5571
YI-5572
YI-5573
YI-5574
Voltage
0-15V
0-30V
0-75V
0-100V
Current
0-60A
0-35A
0-15A
0-11A
Voltage
<0.01%+1mV
<0.01%+1mV
<0.01%+1mV
<0.01%+1mV
Output Rating
Load Regulation
Current
<0.01%+0.1mA <0.01%+0.1mA <0.01%+0.1mA <0.01%+0.1mA
Setting Value
Voltage
0.1mV
0.5mV
2mV
2mV
Resolution
Current
1mA
0.5mA
0.2mA
0.2mA
Readback Value
Voltage
0.1mV
0.1mV
0.1mV
1mV
Resolution
Current
0.1mA
0.1mA
0.1mA
0.1mA
Setting Value
Accuracy
Voltage
0.01%+1mV
0.01%+5mV
0.01%+10mV
0.01%+15mV
Current
0.05%+6mA
0.05%+2mA
0.05%+1mA
0.05%+1mA
Voltage
0.03%+3mV
0.03%+5mV
0.03%+15mV
0.03%+25mV
Current
0.05%+45mA
0.05%+25mA
0.05%+12mA
0.05%+10mA
Voltage
4mvp-p
5mvp-p
6mvp-p
8mvp-p
Current
15mA rms
8mA rms
3mA rms
2.5mA rms
Readback Value
Accuracy
Voltmeter
Accuracy
Milliohmmeter
Accuracy
Working
Condition
0-12V Accuracy: 0.02%+2mV
0-58V Accuracy: 0.02%+5mV
10W. 0-1000mΩ Accuracy: 0.2%+3mΩ
1000-10000 mΩ Accuracy: 0.2%+6mΩ
Power Required
AC 125V/220V+10%; 50/60HZ
Weight
45Kg
Dimension
482mmW×184.5mmH×531mmD
0-40°C; 0-90%RH
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YO IE ENTERPRISE CORP., LTD
2.2 Supplemental Characteristics
State storage memory: 50 user-configurable stored states
Recommended calibration interval: 1 year
AC input ratings (selectable via switch on the rear panel)
Option Opt.01: 220VAC ± 10%, 47 to 63 Hz
Option Opt.02: 110VAC ± 10%, 47 to 63 Hz
Cooling: forced cooling
Operating temperature: 0 to 40 °C
Storage temperature: -20 to 70 °C
Environmental conditions: designed for indoor use installation categoryⅡ, pollution degree 2
environment. Designed to operate at maximum relative humidity of 90%
2.3 YI-55 Power Supply Dimension
The dimension of YI-5581X/YI-5531 series is 214mm W x 101.5mm H x 365mm D.
Diagram 2.1 YI-551X/YI-5531 Power Supply Dimension
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YI-55 Series Programmable DC Power Supply
The dimension of YI-555X Series is 428mm W×88mm H×453.5mm D.
Diagram 2.2 YI-555X Power Supply Dimension
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YO IE ENTERPRISE CORP., LTD
The dimension of YI-557X series is 482mm W×184.5mm H×531mm D.
Diagram 2.3 YI-557X Power Supply Dimension
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YI-55 Series Programmable DC Power Supply
Chapter 3
Quick Start
This chapter mainly focuses on the brief introduction of the surface appearance and basic functions of
YI-55 series power supply so that both experienced and inexperienced users can be acquainted with
the new products quickly. Meanwhile, the chapter also clarifies some preliminary checkout that should
be made prior to operation to make sure the normal running of the products.
3.1 Front Panel and Rear Panel
The front panel layout of YI-551X series power supply is as follows:
Diagram 3.1 the Front Panel of YI-5581X Series Power Supply
The upper half is black VFD display screen and knob
The bottom half, left side to right side, is numberic keys 0-9, esc key, function keys, up-down
keys, enter key, input terminall and output terminal
The rear panel layout of YI-5581X is as follows:
Diagram 3.2 the Rear Panel of YI-551X Series Power Supply
① cooling window
② multifunction connector (remote sensing connector, trigger connector and GND connector)
③ 9-pin serial port interface connector
④ line voltage selection switch (110 VAC or 220 VAC)
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YO IE ENTERPRISE CORP., LTD
⑤ AC input connector
3.2 Preliminary Checkout
The following steps help you verify that the power supply is 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
The user’s manual
One CD (only when you have bought communication accessories)
One communication cable (only when you have bought communication accessories)
One test line (only YI-5511 ,YI-5512 ,YI-5513, YI-5531 have the test line)
2.Connect the power cord and turn on the power supply
When you turn on the power supply, the VFD display screen will light up briefly and the power supply
performs its power-on self-test. Please check if there is any stroke loss on VFD display.
Warning:Your power supply is equipped with a 3-wire grounding type power cord. 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.
3.3 If the Power Supply Does Not Turn On
Use the following steps to help solve problems you might encounter when turning on the instrument.
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)
YI-5511
T5A 250V
T3.15A 250V
YI-5512
T5A 250V
T3.15A 250V
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YI-55 Series Programmable DC Power Supply
YI-5513
T5A 250V
T3.15A 250V
YI-5531
T5A 250V
T3.15A 250V
YI-5551
T10A 250V
T6.3A
250V
YI-5552
T10A 250V
T6.3A
250V
YI-5553
T10A 250V
T6.3A
250V
YI-5571
T15A 250V
T10A
250V
YI-5572
T15A 250V
T10A
250V
YI-5573
T15A 250V
T10A
250V
YI-5574
T15A 250V
T10A
250V
4. How to replace the power-line fuse
Open the plastic cover which locates at below the power input socket in the rear panel of the power
supply by screwdriver, then you will see the fuse. Please replace the damaged fuse with the matched
fuse.
3.4 How to Adjust the Carrying Handle
To adjust the position, grasp the handle by the sides and pull outward. Then, rotate the handle to the
desired position. There are following three positions for you to choose:
Diagram 3.3 YI-55 Series Power Supply Viewing Positions
3.5 How to Rackmount the Instrument
The power supply can be mounted in a standard 19-inch rack cabinet and be easily applied to your
testing system. If you want to rackmount the YI-55 Series, please buy YI-151 rack kit.
Note:Remove the carrying handle and the rubber coating on the front panel before rackmounting the
instrument.
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YO IE ENTERPRISE CORP., LTD
Diagram 3.4 to Rackmount a Single Instrument
Diagram 3.5 to Rackmount two Instruments Side by Side
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YI-55 Series Programmable DC Power Supply
Chapter 4
Panel Operation
This chapter mainly introduces the front-panel operation in detail from the following parts:
Key Layout
The Front Panel Operation Overview
Voltage Set Operation
Current Set Operation
Saving and Recalling Operation
Menu Operation
Output ON/OFF Operation
Remote Measurement Function
Milliohmmeter Function
Voltmeter Function
4.1 Key Layout
Function Keys
Multifunction Keys
Diagram 4.1 Operation Panel
Multifunction Keys Description
0~9
Numberic keys
Menu
Menu operation key
List
List output operation
Trigger
Trigger key
V/mΩ
Voltmeter and milliohmmeter switch button
0.1W
Choose 0.1W power output operation when the instrument is used as an milliohmmeter
1W
Choose 1W power output when the instrument is used as an milliohmmeter
10W
Choose 10W power output when the instrument is used as an milliohmmeter
Local
Local operation
Esc
Esc key (can be exited from any working condition)
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Function Keys Description
Set the voltage value
V-set
Set the current value
I-set
Save
Save the current settings to a specified storage location
Recall
Recall the saved settings from a specified storage location
Menu
Menu operation: set the parameter of the power supply
On/Off
Control the output on/off state
Used together with the multifunction keys to perform diversity functions and
Shift
applications(for example: shift+Menu can perform menu function)
▲
Up-key: choose menu item in menu operation or to increase the output voltage
▼
Down-key: choose menu item in menu operation or to reduce the output voltage
Enter the selected value or setting
Enter
4.2 Front-panel Operation Overview
The following section describes an overview of the front-panel keys before operating your power
supply.
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.
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 PC.
The output of the power supply can be enabled or disabled from the front panel by pressing
the key
On/Off .
The VFD display shows the current operating status of the power supply with annunciators.
When it is powered on, the VFD will display two lines of data. The first line shows the actual
voltage value, actual current value and power supply’s status while the second line shows
the voltage value that can be measured by voltmeter and output setting value of the power
supply.
4.3 Constant Voltage Operation
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.
Solution 1:
Press the ▲ and ▼ keys to change the value when the YI-55 series power supply is powered on.
Solution 2:
Step1. Power on the YI-55 series instrument
Step2. Press V-Set
key
Step3. Press the numeric keys 0 to 9 to enter the voltage value you wanted
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YI-55 Series Programmable DC Power Supply
Step4. Press Enter
to confirm the value
When you close Knob Lock function in Config menu, the following two operations also can be used:
1) Use upper revolving encoder directly to adjust voltage;
2) Press
key then use upper revolving encoder to adjust voltage
V-Set
4.4 Constant Current Operation
The constant current output range is from 0 A to the maximum current value of each type. It is very
easy for you to set the constant current output.
Step1. Power on the YI-55 series instrument
Step2. Press
I-Set key
Step3. Use the numeric keys
0
to 9
to enter the voltage value you wanted
Step4. Press Enter
key to confirm the value
If you close knob lock function in config menu, please use following operation:
Press I-Set key then use upper revolving encoder to adjust voltage
4.5 Saving and Recalling Operation
You can store up to 50 different output states in storage register locations(0~49) so that you can recall
the saved settings quickly. This kind of store operation can be performed by the keys
Save
and
Recall located in the front panel. When the fast recalling is activated, you can press the numberic
keys
0 to 9 to invoke the corresponding data.
Each output state includes: 1. Constant voltage value, 2.Constant current value, 3.Maximun voltage
setting value, 4. Step voltage value.
After you setting an output state (CV value, CC value and Maximum voltage), press the
Save key
and the numeric keys
0 to 9 to store the output value in a specified memory location.
Press the Recall key and the numeric keys 0 to 9 to recall the output value from a specified
memory location.
4.6 Menu Operation
4.6.1 Menu Description
Press the key
MENU
to access to the menu function and at the moment the VFD display screen
shows the menu items. You can select the menu items by pressing the ▲ and ▼ keys or by rotating
the knob, and then press the key
the key
Esc
ENTER
to enter in the menu item you wanted. Or you can press
to get back to the higher level menu.
The first level menu includes:
Config: set the function of power supply
System set: set the system parameter
List Set: set list operation
Auto test: set auto test operation
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Output Timer: set the duation of output
SN: the serial number of the power supply
Exit: exit the first-level menu
When accessing to Config item, the following menu items will be displayed on the VFD display
screen by pressing the keys ▲ and ▼.
Init: set all settings to factory default set
Out Memory: set the power supply’s output state when it is powered on
On
Off(Default)
Setting the same state as last time you turned
off the power supply.
Setting the output to OFF state when the power
supply is powered on.
TRI KeepOut: set TRI as preseved output port
On
Off(Default)
When TRI is in low voltage level, the output
state of power supply is ON.
When TRI is in high voltage level, the output
state of power supply is OFF.
When the TRI KeepOut is enabled, the ON/OFF
on the front panel is invalid.
The TRI Keepout is only valid to ordinary
operation mode. It is invaid to list opeartion and
auto test mode.
Disabled
Fast Recall: set key shortcut function
On
Off(Default)
In the main interface (not enter any menu of the
power supply), press the key 0~9 to recall
the parameters set by Save function
Disabled
Key Sound: set the key sound
On(Default)
Off
The buzzer will sound when any key was
pressed.
The buzzer will not sound when any key was
pressed
Knob Lock: set the knob lock state
On
Off(Default)
The knob is locked and rotating the knob will not
cause any change of the setting value.
The knob is unlocked and rotating the knob will
cause change of the setting value.
Remote Sense: set the remote sense mode
On
Off(Default)
Activating the remote sense mode ( Rear-panel
measurement mode)
Activating the front-panel measurement mode
Curr Unit: set the unit of current
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YI-55 Series Programmable DC Power Supply
mA
A(Default)
Set the unit of current is mA
Set the unit of current is A
Match Power: set the matching power
50 HZ(Default) Match 50HZ
60 HZ
Match 60HZ
Baudrate Set: set the baud rate
4800
9600(Default)
19200
38400
Setting the baudrate as 4800bps
Setting the baudrate as 9600bps
Setting the baudrate as 19200bps
Setting the baudrate as 38400bps
Comm. Parity: set the communication parity
None(Default)
Even
Odd
Setting no parity bit
Setting comm. parity as even parity bit
Setting comm. parity as odd parity bit
Key Lock Set: set the key lock and password function
Password=
When set the password as 0 or pressing the
key Enter directly, the Key Lock Set is
disable.
When the Key Lock Set is enable, the Key
Lock Set get locked if no keyboard operation
within 60 seconds, the Key Lock Set gets
enable only if you input the correct
password.
Exit: exit from the current menu
When accessing to System Set item,the following menu items will be displayed on the VFD display
screen by pressing the keys ▲ and ▼.
Max Volt: set the maximum voltage of the power supply
Max Volt=
Setting the maximum voltage
Step Volt: set the step voltage
Step=
After the step voltage set, the voltage value
increases or discreases equal to each step
voltage by pressing the key ▲ or ▼ once.
Exit: exit from the current menu
When accessing to the List Set item, the following menu items will be displayed on the VFD display
screen by pressing the keys ▲ and ▼.
Load List File: read list file
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Edit List File: edit list file
Continuous
Continuous mode, start from the first step to
the last step.
Loop mode, repeatedly execute the steps in
accordance with the order of the list.
Step mode, execute single step for one
trigger.
Loop Mode
Step Mode
Edit File Format: format file in list operation
1X200 Steps
Set list file as 1X200 step
2X100 Steps
Set list file as 2X100 step
4X50 Steps
Set list file as 4X50 step
8X25 Steps
Set list file as 8X25 step
Exit: exit from the current menu
When accessing to the Auto Test item, the following menu items will be displayed on the VFD display
screen by pressing the keys ▲ and ▼.
Load Atest File: read auto test file
Edit Atest File: edit auto test file
Exit: exit the auto test menu
When accessing to the Output Timer item, you can see the item Close Delay, which means to set
the output timing.
Close Delay:set the duration of the output
The unit of the Close Delay is second, the accuracy is 0.001 second;The output switch to OFF
state when the duration is over.
The function is disable when the duration is set 0 second. The disable state is the defualt state.
The function is invaild when the TRI KeepOut is used in ordinary working modes.
When accessing to the SN item, the 18 digits serial number shows on the VFD display.
For example: SN= 080010960121229001
Note: When accessing to the Menu item, you can press
Esc or
Exit to exit the menu operation.
No matter which function the instrument is performing, you can exit the function operation
status by pressing the key
..
Esc
4.6.2 Menu Function
The output state setup after the intrument powered on (>Out Memory)
This instruction is used to set the output state when the power supply is powered on. If you select the
item On, the power supply will set the output to OFF state when the power supply is powered on. If
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YI-55 Series Programmable DC Power Supply
you select the item Off, the output will remain the same state as last time you turned off the power
supply.
Setting the Key Sound (Key Sound)
This instruction can switch on/off the buzzing sound when you press any key, If you select the item 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 setting is the item On; the buzzer will sound when you press any key.
Setting the Baudrate (>Baudrate Set)
This instruction can change the communication baud rate of the power supply; the baud rate range is
4800bps, 9600bps, 19200bps, 38400bps. Before the communication, you must make sure that there
is same baud rate between the power supply and the computer. Default baud rate is 9600bps.
Setting Password for Function Keys (>Key Lock Set)
This instruction can set a password (1 through 8 digits) to lock the function keys operation. After
setting the password, the key V-Set,Save,Recall,Menu will be locked if no operation on keyboard in
60 seconds. Only if you put the correct password, the above keys are able to unlock. If you don’t want
to lock the function keys, please don’t press any number key or just put 0 when you enter the Key
Lock Set item, just press
Enter
key to unlock it.
List Operation (>List Set)
You can set every single-step value and duration time by new list operation so as to get different
output list. The parameters of the list operation include the name of the list file which are input, input
single step numbers (200steps at most), single step duration time (1mS at least) and the setting value
of every single step.
When list operation is under Continuous mode, the power supply will begin the list operation until the
list operation is finished or until receiving the next trigger signal.
Before editing the list, if you want to change the file storage format, please operate as the following
steps:
1) Press the keys
Shift
and Menu
to access to the menu function.
2) When VFD display screen shows the item Menu Config, press the key ▼ twice to select the item
List Set, press the key
Enter
to confirm.
3) When VFD display screen shows the item Load ListFile, Press the key ▼ twice, select the item
Edit File Format, press the key
Enter
to confirm.
4) When VFD display screen shows 8*25 Steps, Press the key ▼, select a list mode you want from
1*200 Steps,2*100 Steps, 4*50 Steps, press the key
1*200 steps means to set list file as 1X200 step
2*100 steps means to set list file as 2X100 step
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Enter
to confirm.
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4X50 steps means to set list file as 4X50 step
8X25 steps means to set list file as 8X25 step
5) Press ▼ to select the item Edit List File, press the key
Enter
to confirm.
6) When VFD display screen show the item Edit List File 1, press the key ▲ and ▼ to select
sequential number you want to edit, press the key
Enter
to confirm.
7) When VFD display screen show the item List x Steps= xxx, press numberic keys to set the total
list steps. Press the key
Enter
to confirm.
8) When VFD display screen show the item List File x Loop Mode, press the key ▲ and ▼ to select
operation mode:
Continuous means to start from the first step to the last step, stop the exsiting executing until next
trigger
Loop Mode means to looping execute list file
Step Mode means excute one stpe after the trigger
9) When VFD display screen show the item Step 1 Time= xxxxx mS, press numberic keys to set
time for step 1, press the key
Enter
to confirm.
10) When VFD display screen show the item Step 1 Volt= xxxxx V, press numberic keys to set
voltage for step 1, press the key
Enter
to confirm.
11) When VFD display screen show the item Step 1 Curr= xxxxx A, press numberic keys to set
current for step 1, press the key
Enter
to confirm.
12) Repeat step 9, 10, 11 to complete all steps in list file
13) Repeat step 5 to 15 to edit other list files if needed
14) Press ▼ to select Load ListFile, press the key
Enter
to confirm.
15) Press the key ▲ and ▼ to select sequential number you want to load, press the key
Enter
to
confirm. The instrument is in the List mode. The VFD display screen shows OFF in the right when
output is on. VFD display screen shows List1 in the right when output is off. Press the key On/Off
to execute. Press key Shift+2 or Esc to exit. Press key Shift+2 direct to excute the last list file.
16) Under loop mode, the instrument looping executes automatically. Please find the following table at
Continuous Mode and Step Mode:
Diagram 4.2 Continious Trigger (2 Times Cyclical)
When the list operation is under the Step Mode, the power supply will not be changed to next step
until receiving a trigger signal. Please refer to the following diagram:
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YI-55 Series Programmable DC Power Supply
Diagram 4.3 Step Mode
Automatic Test (>Auto Test)
You can check if the equipment is qualified by editing the automatic test files, such as the value set,
comparison parameters, delay time, inputting the step number (50 steps at most). 4 data of automatic
test files can be edited.
How to edit automatic test files:
1) When the VFD display shows the item Menu Config,press the key ▼ tripple to select the item
Auto Test,followed by pressing the key
Enter
to confirm.
2) When the VFD display shows the item Load Atest File,press the key ▼ and choose the item
Enter
Edit Atest File, followed by pressing the key
to confirm.
3) When the VFD display shows the item Edit Atest File 1,press the keys
sequential number that need to be edited, followed by pressing the key
4) When the VFD display shows Atestx Steps=
of list file, followed by pressing the key
and ▼ and select the
Enter
to confirm.
xxx,press the numeric keys to set the total steps
Enter
to confirm.
5) When the VFD display shows Step 1 Test Curr, press the keys
and ▼ to select one of the
following testing types:
Volt means to test the output voltage.
Curr means to test the current.
DVM means to test voltmeter input.
6) When the VFD display shows Step 1 Time= xxxxx S, press the numeric keys to set the test
duration, followed by pressing the key Enter
to confirm. Please note that the duration range is
0.2S-25.5S. If delay time is set as 25.5S, the power supply will be automatically in the pause
mode and go on excuting only when another trigger is input.
7) When the VFD display shows Step 1 Volt= xxxxx V, press the numeric keys to set the voltage,
followed by pressing the key
Enter
to confirm.
8) When the VFD display shows Step 1 Curr= xxxxx A, press the numeric keys to set the current,
followed by pressing the key
Enter
to confirm.
9) When the VFD display shows Step 1 Max= xxxxx X, press the numeric keys to set the maximum
value for the qualified test, followed by pressing the key
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Enter
to confirm.
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10) When the VFD display shows Step 1 Min= xxxxx X,press the numeric keys to set the minimum
value for the qualified test, followed by pressing the key
Enter
to confirm.
11) Repeat from step 5 to step 10 to set all the other steps.
12) Repeat from step 2 to step 11 to edit other automatic test files according to your need.
13) Press the key▼ to select the item Load Atest File, followed by pressing the key
Enter
to
confirm.
14) Then the intrument enter into the automatic test mode, showing AUT1 at the right upper corner of
the VFD display and OFF at the right lower corner of the VFD display. That means to wait for a
trigger.
15) There are three trigger modes for automatic test
Press the key On/Off to trigger.
Press the key Shift+3 to trigger.
Become the high voltage level to the low voltage level by Trig_in at the rear panel and last
more than 5mS.
16) When the power supply is having the automatic test, the word Wait will be showed at the right
lower corner of the VFD display. When in pause mode, the word Stay will be showed at the right
lower corner of the VFD display. When one test is finished, the test result Pass or Fail will be
showed at the right lower corner of the VFD display.
17) When one test is finished, users can press the up-down keys to make one single step worked
manually. At the moment, step n will be showed on the VFD display, indicating the step which is
working; then Han is showed, indicating that the instrument is in hand-operated single step test
state, followed by the test results being showed at the right lower corner of the VFD display.
4.7 Output On-Off Operation
When in front-panel operation, you can press the key On/Off to control the output state. The key
On/Off does not affect the present setting values. When the TRI is enable, the key On/Off is
invalid. When TRI is in OFF state, the TRI can be used to switch the OFF/ON state.
4.8 Remote Measurement Function
When the load consumes high current, the power supply will produce voltage drop in the connecting
wire between power supply and load terminals. In order to guarantee the measurement accuracy,
remote measurement terminals is installed at the rear-panel of the power supply. Users can measure
the output terminals voltage of the instrument under test by these terminals.
Before performing the remote measurement function, you need to set the power supply as the remote
measurement mode.
Please refer to the diagram 4.4 for the trigger terminals and measurement terminals.
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YI-55 Series Programmable DC Power Supply
Diagram 4.4 Remote Measurement Terminals
-S and +S are remote measurement terminals; TRQ and TRI are trigger terminals, GND is ground
terminal.
The TRQ is trigger output port under auto test mode. The TRQ is default as low voltage level. The
TRQ provides +5V for external use when the trigger event happens.
As a multifunction extended port, TRI port is designed for trigger test in the list mode and auto test
mode, TRI is also used to switch the ON/OFF state and used as TRI KeepOut port. The TRI is default
as high voltage level of +5V. The TRI completes trigger when it change to low voltage level.
4.9 Milliohmmeter Function
The power supply provides the four-line electrical resistance measurement, just as showed in
following diagram 4.5, which can measure accurately the low resistance and the maximum
measurement resistance is 10Ω. In order to avoid the damage of the resistance under test, please
make sure the resistance under test is within the measurement range.
Three measurement ranges can be optional: 0.1W, 1W, 10W.
Operation Method:
1) Press the keys
Shift
and V/mΩ (VFD display screen shows----,----mΩ, Range:0.1W) to
measure the resistance.
2) Press the keys
Shift
and 0.1W or 1W or 10W to set different measurement range of
Milliohmmeter.
Diagram 4.5 Milliohmmeter Measuring Resistance
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4.10 Voltmeter Function
The voltage of the instrument under test can be measured if the wires are connected together just as
the diagram 4.6. The power supply can be worked as a voltmeter as long as it is not measuring the
resistance.The accuracy of the voltmeter is 5 1/2.
Diagram 4.6 Measuring the Voltage of the Instrument under Test
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YI-55 Series Programmable DC Power Supply
Chapter 5
Remote Operation Mode
The DB9 interface connector on the rear panel of the power supply can be transferred to RS232
interface through the voltage level convertor cable (YI-131), the following information will tell you how
to use the computer to control the output of the power supply.
Before carrying out the remote operation mode, please use the voltage level converter cable (YI-131)
provided by Maynuo Electronic to connect the DB9 interface connector of the power supply and the
RS232 interface connector of the computer for the communication. The YI-131 aslo can be replaced
by the YI-132(RS485) cable and YI-133(USB) cable for different application.
5.1 YI-131/ YI-132/ YI-133 Communication Cable
The DB9 interface connector on the rear panel of power supply is TTL voltage level, you can use the
communication cable (YI-131, YI-132 or YI-133) to connect the DB9 interface connector of the power
supply with the computer’s interface for the communication. Please refer to the following figures for
interface connector.
Diagram 5.1 YI-131
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Diagram 5.2 YI-133
Diagram 5.3 YI-132
Note: It will not work if you connect the DB9 interface connector of the power supply to the RS232
interface connector of computer directly by a standard RS232 cable. Please use YI-131 to
connect them.
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YI-55 Series Programmable DC Power Supply
5.2 Communication between Power Supply and PC
The DB9 interface connector on the rear panel of the power supply can be transferred to the interface
connector of the computor through the voltage level converter cable (YI-131/ YI-132/ YI-133). The
following instructions can help you understand how to control the output of power supply by PC.
1. Communication Setting
Before using the remote operation mode, please make sure that the baudrate and communication
address in power supply is the same as that in the computer software; otherwise, the communication
will fail. You can change the baudrate and communication address from the front panel or from
computer.
(1) Baudrate: 9600(4800, 9600, 19200, 38400, which are selectable from the menu on the front
panel of power supply).
(2) Parity: NONE (NONE, EVEN, ODD)
(3) Data bit: 8, Stop bit: 1(fixed value)
2. DB9 Serial Interface
Diagram 5.4 DB9 Serial Interface
The output of DB9 interface on the rear panel of the power supply is TTL voltage level, so the voltage
level convertor cable(YI-131/ YI-132/ YI-133)must be applied before connecting the DB9 interface
with the serial interface on PC.
3. The Difinition of the DB9 Interface
One end of the YI-131/ YI-132/ YI-133 cable is TTL voltage level,which is connected to the power
supply. Another end is different.
The Difinition of the DB9 Interface as follows:
Power Supply Side
1
2
3
4
5
6
7
8
9
TTL
VCC(+5V)
RXD(receive)
TXD(send)
NC
GND(ground)
NC
NC
NC
NC
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PC side
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
1
2
3
4
YI-131(RS232)
NC
Notes:
RXD
( receive ) The pin 4 and 7 are paralleled.
TXD( send ) Each is prodvided +12V power.
VCC1
GND(ground)
NC
VCC2
NC
NC
The pin 4 is provided +12V when
the DTR is enable in process of
programming.
The pin 7 is provided +12V when
the RTS is enable in process of
programming.
The DTR default is set enable in
most serial communication
controls.
YI-132(RS485)
A(+)
Notes:
B(-)
NC
NC
GND
(ground)
Only to connect the pin 1 and pin 2
is able to get the RS485
communicate normally well.
The pin 5 and pin 6 provides
Vout(+5V) 5V/100Ma for external use.
YI-133(USB)
VCC(+5V) Notes:
The type A interface of the
-D
standard USB can be directly
+D
connected USB interface of the
GND
PC.
(ground)
The USB driver can be installed.
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YI-55 Series Programmable DC Power Supply
Chapter 6 SCPI Communication Protocal
6.1 SCPI Communication Command Introduction
YI-55 series programmable DC power supply supports SCPI communication protocol.
SCPI communication protocol is a standard commands for programmable instruments, which defines
a standard set of communication commands.Command for YI-55 series power supply can be divided
into two categories: basic commands (IEEE-488.2 Common Command Set) and command specified
by YI-55 series power supply.
SCPI command is ordered arrangements of tree constructs. Each command contains a number of
strings (mnemonic) . Layers separated by a colon (:). At the top of the command in the command tree
known as the "root shell" or simply "root." Access to the next command, you must specify a path.
Ordered tree is structured as follows:
In the above table: AA represents the root path; BB, CC, DD represents the direct sub-path of root
path AA. EE, FF, GG said that the path is a sub-sub-path under the BB. HH, JJ said that the path is a
sub-sub-path under DD.
Command description:
1) [:] AA: CC means the current root path for the AA, visit the CC under the AA.
2) [:] AA: BB: FF means the current root path for the AA, visit the FF of the sub-path BB under
the AA.
3) [:] AA: DD: HH means the current root path for the AA, visit the HH of the sub-path DD under
the AA.
This command can send more than one order in a message and use a semicolon (;) between
each order.
Example:
[:]AA:BB:EE;FF;GG means access to the EE, FF, GG under the BB.
[:]AA:BB:FF;:AA:DD:HH means access to FF under the BB and HH under the DD.
SCPI language mnemonic (keywords) has two farmat: long format and short format. Short format is
actually short for long format. It uses the following rules:
Short format mnemonic is the first four characters of long format mnemonic. If the length of the
long-form mnemonic characters less than or equal to 4, then the long mnemonic is the same as
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short format mnemonic.
If the length is greater than the length of 4 mnemonic, and the fourth character is a vowel, short
mnemonic will discard the fourth vowel character and become three characters.
Example:
Short-type mnemonic of ERRor is ERR, rather than the ERRO.
Some command needs parameters, for example, setting value command. There is a space (ASCII
code is 32) between the command and the first parameter.
Example:
Setup voltage value command [:] VOLT 12.000
There is a space (ASCII code is 32) between 12.00 and VOLT.
SCPI is case-insensitive, namely commands are not case sensitive and each command has an EOI
end: Instruction end <LF> (that ASCII code character '\n', that is, line breaks decimal ASCII code 10,
hex 0x0A).
Note: All of the following commands to send back all require add <LF>. The following statement
appears in [ ] represents the characters can be written in commands, or you can not write.
6.2 Command Introduction of YI-55 Power Supply
6.2.1 Basic command (IEEE-488.2 Common Command Set)
Basic command includes all general functions in IEEE-488.2. These functions are usually applied to
support the IEEE488.2 standard measuring instruments. The group command begin at an asterisk (*)
and has no hierarchy.
Command * IDN?
Command * IDN is used to read the relative information of power supply, including manufacturer,
product model number, serial number, and version number.
Return command: return parameter contains four fields separated by comma(,).
Example:
Sending command * IDN?, the corresponding expressed as a hexadecimal is 0x2A 0x49 0x44 0x4E
0x3F 0x0A, if return command is MAYNUO, YI-5511, 080010960121229001, V1.0, it means:
MAYNUO
YI-5511
080010960121229001
V1.0
manufacturer
product model number
product serial number
fireware version number
6.2.2 System Command
Commands described in this section are under the root path [:] SYSTem commands. The following
commands are used short-type mnemonic format.
Command [:]SYSTem:ERRor?
Command [:]SYSTem:ERRor is used to read the error code and error message.
Return command: Error code, error message.
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YI-55 Series Programmable DC Power Supply
Example:
If you send command [:]SYST: ERR?,then return command ought to be"0, 'No Error'", or "50, 'Error
Para Count'", or "70, 'Invalid Command'" etc..
Command [:]SYSTem:REM
Command [:]SYSTem:REM is used to set remote control mode, namely the PC control mode.
Return command: None
Example:
If you send command [:]SYSTem:REM
After sending command successfully, the power supply has been in the remote control mode , “REM”
characters appears in the right corner front panel and the front panel operation is not valid. And
please return the front panel control model by pressing the key Shift + the number 7, or sending the
command [:] SYST: LOC.
Command [:]SYSTem:LOC
Command [:] SYSTem:LOC is used to set the front panel control mode.
Return command: None
Example:
Sending command [:] SYST:LOC if the power supply in the remote control (PC) mode. After sending
successfully, the power has been in the front panel control mode while “REM”disappears from the
right corner of the front panel.
Command [:]SYSTem:SENSe <bool>
Command [:] SYSTem: SENSe <bool> is used to set the power is under remote measurement.
Return command: None
Parameters: bool-type parameter (0-OFF, 1-ON)
Example:
Sending command [:]SYST:SENS 1, if sending successfully, the power supply is set in the remote
measurement.
6.2.3 Measurement Command
Commands described in this section are under the root path [:]MEASure commands. The following
commands are used short-type mnemonic format.
Command [:]MEASure: VOLTage?
Command [:]MEASure: VOLTage? is used to read output voltage value.
Return command: Numeric
Return parameters Unit: V
Example:
Sending command [:]MEAS: VOLT?, if return command is 12.560, it means the present output
voltage is 12.560V.
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Command [:]MEASure:CURRent?
Command [:]MEASure:CURRent? is used to read output current value.
Return command: Numeric
Return parameters Unit: A
Example:
Sending command [:]MEAS:CURR?, if return command is 1.245, it means the present output current
is 1.245A.
Command [:]MEASure:DVM?
Command [:]MEASure: DVM? is used to read input voltage of the voltmeter in the power supply.
Return command: Numerical
Return parameters Unit: V
Example:
Sending command [:]MEAS:DVM?, if return command is12.560, it means the current voltmeter input
voltage is 12.560V.
Command [:]MEASure:VCM?
Command [:]MEASure:VCM? is used to read three value: output voltage value, output current value,
and input voltage of the voltmeter in the power supply.
Return command: Numerical list, using cormer(,) among the three values
Return parameters Unit: V and A
Example:
Sending command [:]MEAS:VCM?, if return command is 10.0000,0.00000,5.0000, it means the
present output voltage is 10.0000V, the present output current is 0.00000A, and the current voltmeter
input voltage is 5.0000V.
6.2.4 Setting Command
Command [:]OUTPut <bool>
1.Command [:]OUTPut <bool> is used to set the output ON/OFF status.
Return command: None
Parameters: bool-type parameter (0-OFF, 1-ON)
Example:
If sending command [:]OUTP 1, the power supply output is ON if you set successfully.
2.Related command [:]OUTPut?, to query output status of power supply.
Return command parameter: <bool>.
Command [:] MODE <mode>
1. Command [:]MODE <mode> is used to set the power operating mode. That is, command set mode
or sequential list mode, or milliohmmeter mode.
Parameter: mode has three following modes,
FIXed
command set mode
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YI-55 Series Programmable DC Power Supply
LIST
sequential list mode
DRM
milliohmmeter mode
Return command: None
Example:
Sending command [:]MODE LIST, the power supply is in sequential list mode.
2. Related command [:] MODE?, to query working mode of power supply.
Return command parameter: <mode>
Command [:]VOLTage <Value>
1.This command is used to set the voltage value of power supply.
Parameters: numeric |MAX|MIN
Unit: V
Return Command: None
Example:
1) Sending command [:]VOLT 30
Means to set the voltage value of the power supply is 30V.
2) Sending command [:]VOLT MAX
Providing the maximum output voltage is 76.000V, it means to set the voltage value is the maximum
voltage 76.000V.
3) Sending command [:]VOLT MIN
Providing the minimum output voltage is 0.000V, it means to set the voltage value is the minimum
voltage 0.000V.
2.Related Command [:]VOLT? MAX|MIN, the command is used to query the setup voltage value,
the maximu setup voltage value and the minimum setup voltage value.
Return command parameters: numeric
Example:
1) If you want to query the setup voltage value, please send command [:]VOLT?, if the return
command is 10.0000, it means the setup voltage of power supply is 10.0000V.
2) If you want to query the maximum setup voltage value, please send command [:]VOLT? MAX, if
the return command is76.0000, it means the maximum setup voltage value of power supply is
76.0000V.
3) If you want to query the minimum setup voltage value, please send command [:]VOLT? MIN, if the
return command is 0.0000, it means the minimum setup voltage value of the power supply is 0.0000V.
Command [:]CURRent <Value>
1. This command is used to set the current value.
Parameters: numeric |MAX|MIN
Unit: A
Return command: none
Example:
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1) Sending command [:]CURR 3, it means to set the current value as 3A.
2) Sending command [:]CURR MAX
Providing the maximum setup current value of the power supply is 2.0000A, it means to set the
present current value as the maximum current value 2.0000A.
3) Command sent [:]CURR MIN
Providing the current minimum setup current is 0.0000A, it means to set the present current as the
minimum current 0.0000 A.
2.Related Command [:]CURR? MAX|MIN, the command used to query the setup current value, the
maximum setup current value and the minimum setup current value
Return command parameters: numerical value
Example:
1) If you want to query the setup current value, please send command [:]CURR?, if the return
command is 1.0000,it means the setup current of power supply is 1.0000A.
2) If you want to query the maximum setup current value, please send command [:]CURR? MAX, if
the return command is 2.0000, it means the maximum setup current value of power supply is
2.0000A.
3) If you want to query the minimum setup current value, please send command [:]CURR? MIN, if the
return command is 0.0000, it means the minimum setup current value of the power supply is 0.0000A.
Command [:]VOLTage:PROTection <Value>
1. This command is used to set the upper limit voltage of the power supply, namely the maximum
output voltage.
Parameters: numeric |MAX|MIN
Unit: V
Return command: none
Example:
1) If sending command [:]VOLT:PROT 30, it means to set 30.000V as the upper limit voltage of the
power supply.
2) If sending command [:]VOLT:PROT MAX, it means to set the upper limit voltage as the maximum
output voltage value of the power supply.
3) If sending command [:]VOLT:PROT MIN, it means to set the upper limit voltage as the minimum
output voltage value of the power supply.
2. Related command [:]VOLTage:PROTection? [MAX], it means to query the upper limit voltage
Return command parameters: numerical value
Example:
1)If sending command [:]VOLT:PROT?, If the return command is 20.000, it means the upper limit
voltage of the power supply is 20.000V.
2)If sending command [:]VOLT:PROT? MAX, If the return command is 76.000, it means the
maximum setup voltage value of the power supply is 76.000V.
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YI-55 Series Programmable DC Power Supply
6.2.5 List Operation Related Command
Command [:]LIST:AREA <num>
1. This command is used to set the list location division mode.
Parameter: 1|2|4|8
1. Set 1 file of 200 list steps in the list operation
2. Set 2 files of 100 list steps in the list operation
4. Set 4 files of 50 list steps in the list operation
8. Set 8 files of 25 list steps in the list operation
Example:
If sending command sent [:]LIST:AREA 8, it means to set 8 files of 25 list steps.
2. Related command
[:]LIST:AREA?, it means to query the location division mode of the list
operation.
Return parameters: <num>
Command [:]LIST:RCL <num>
This command is used to recall the saved files from a certain location so as to make them executed in
the list.
Parameter: 1~8
Return command: none
Example:
If sendin command [:]LIST:RCL 2, it means to recall the list file from the storage register location 2
and make the file executed.
Command [:]LIST:COUNt <count>
1.This command is used to set the step number of list.
Parameter: count range : 1~200
Return command: none
Example:
If sending command [:]LIST:COUN 20, it means the step number of the list is set as 20.
2.Related command [:]LIST:COUNt?, it means to query the step number of the current list.
Return parameter:<count>
Command [:]LIST:MODE <mode>
1. This command is used to set the working mode of the list.
Parameters: mode has 3 types:
CONTinuous: continuous mode
STEP:
1 step mode (once mode)
LOOP:
loop mode
Return command: none
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YO IE ENTERPRISE CORP., LTD
Example:
If sending command [:]LIST:MODE CONT, it means the working mode of list files is set as continuous
mode.
2. Related command [:]LIST:MODE?, it means to query the working mode of the current list.
Return parameters: <mode>
Command [:]LIST:VOLTage
<count>,<value>
1. This command is used to set the setup voltage value of the appointed step in the list.
Parameter: count is appointed step number; value is the setup voltage.
Unit: V
Return command: none
Example:
If sending command [:]LIST:VOLT 1,5, it means to set the setup voltage value of the first step of the
list file as 5.000V.
2. Related command [:]LIST:VOLTage? <count>, it means to query the setup voltage value of the
appointed step in the list.
Return parameters:<value>
Example:
If sending command [:]LIST:VOLT? 1, it means to query the setup voltage value of the first step in the
current list.
Command [:]LIST:CURRent <count>,<value>
1.This command is used to setup current value of the appointed step in the list.
Parameters: count is appointed step number; value is the setup current.
Unit: A
Return command: none
Example:
If sending command [:]LIST:CURR 1,2, it means to set the setup current value of the first step in the
list as 2.000A.
2. Related command [:]LIST:CURRent? <count>, it means to query the setup current value of the
appointed step in the list.
Return parameter: <value>
Example:
If sending command [:]LIST:CURR? 1, it means to query the setup current value of the first step in
the current list.
Command [:]LIST:WIDTh <count>,<time>
1. This command is used to set the delay time of the appointed step in the list.
Parameters: count is the appointed step number; time is the setup delay time.
Unit: mS
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YI-55 Series Programmable DC Power Supply
Return command: none
Example:
If sending command [:]LIST:WIDT 1,2000, it means to set the delay time of the first step of the list file
as 2000mS.
2. Related command [:]LIST:WIDTh? <count>, it means to query the delay time of the appointed
step in the current list.
Return parameters: <time>
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YO IE ENTERPRISE CORP., LTD
Quick Reference
Safety
Please donot install any spare or repair the instrument without permission. In order to make sure the
normal work of the instrument, please have it mended in the maintenance department designated by
our company.
Pease review the following safety precautions before operating our equipment.
Safety Symbols
Please keep in mind the following items which may result in injuries on your body.
Connect it to safety earth ground using the wire recommended in the user manual.
High voltage danger (Non-professionals are forbidden to open the instrument)
The symbol on an instrument indicates that the user should refer to the operating Instructions
located in the manual.
Certification and Warranty
YI-55 series power supply meet 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.
Maintenance Service
This product must be returned to maintenance department designated by our company for repairing.
Customer shall prepay shipping charges (and shall pay all duty and taxes) for products returned to the
supply for warranty service. Except for products returned to customer from another country, supply
shall pay for return of products to customer.
Limitation of Warranty
The foregoing warranty shall not apply to
1. Defects resulting from improper or inadequate maintenance by the Customer,
2. Customer-supplied software or interfacing,
3. Unauthorized modification or misuse,
4. Operation outside of the environmental specifications for the product, or improper site preparation
and maintenance.
5. Defects resulting from the circuit installed by clients themselves
Attention
No inform will be given for any changes in the content of the user’s guide.
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