Owon P Series User manual

P series Single Channel
Output DC Power Supply
User Manual
www.owon.com

Sep. 2020 edition V1.2.0
Copyright © LILLIPUT Company. All rights reserved.
The LILLIPUT's products are under the protection of the patent rights, including ones which have
already obtained the patent rights and those which are applying for. The information in this
manual will replace all that in the materials published originally.
The information in this manual was correct at the time of printing. However, LILLIPUT will
continue to improve products and reserves the rights to change specification at any time without
notice.
is the registered trademark of the LILLIPUT Company.
Fujian LILLIPUT Optoelectronics Technology Co., Ltd.
No. 19, Heming Road
Lantian Industrial Zone, Zhangzhou 363005 P.R. China
Tel: [phone] Fax: [phone]
Web: www.owon.com E-mail: [e-mail]

General Warranty
We warrant that the product will be free from defects in materials and workmanship
for a period of 2 years (1 year for accessories) from the date of purchase of the
product by the original purchaser from our company. This warranty only applies to
the original purchaser and is not transferable to a third party.
If the product proves defective during the warranty period, we will either repair the
defective product without charge for parts and labour, or will provide a replacement
in exchange for the defective product. Parts, modules and replacement products
used by our company for warranty work may be new or reconditioned like new. All
replaced parts, modules and products become the property of our company.
In order to obtain service under this warranty, the customer must notify our
company of the defect before the expiration of the warranty period. Customer shall
be responsible for packaging and shipping the defective product to the designated
service centre, a copy of the customers proof of purchase is also required.
This warranty shall not apply to any defect, failure or damage caused by improper
use or improper or inadequate maintenance and care. We shall not be obligated to
furnish service under this warranty a) to repair damage resulting from attempts by
personnel other than our company representatives to install, repair or service the
product; b) to repair damage resulting from improper use or connection to
incompatible equipment; c) to repair any damage or malfunction caused by the use
of not our supplies; or d) to service a product that has been modified or integrated
with other products when the effect of such modification or integration increases
the time or difficulty of servicing the product.
Please contact the nearest Sales and Service Offices for services.
Excepting the after-sales services provided in this summary or the applicable warranty
statements, we will not offer any guarantee for maintenance definitely declared or hinted,
including but not limited to the implied guarantee for marketability and special-purpose
acceptability. We should not take any responsibilities for any indirect, special or consequent
damages.

i
Table of Contents
1. General Safety Requirements...............................................................1
2. Safety Terms and Symbols ...................................................................2
3. Quick Review ......................................................................................3
3.1 Panel and Interface................................................................................................................3
3.1.1 Front Panel.................................................................................................................3
3.1.2 Rear Panel..................................................................................................................4
3.1.3 User Interface.............................................................................................................5
3.2 General Inspection ................................................................................................................5
3.3 Power Inspection...................................................................................................................6
3.4 Output Inspection..................................................................................................................6
4. Panel Operation ...................................................................................7
4.1 Turn On/Off the Channel Output..........................................................................................7
4.2 Set the Output Voltage/Current.............................................................................................7
4.3 Over Voltage/Current Protection ..........................................................................................7
4.4 Memory key shortcut settings...............................................................................................8
4.4.1 Quick output ..............................................................................................................8
4.4.2 Edit .............................................................................................................................8
4.5 System Settings.....................................................................................................................9
4.5.1 Display Brightness.....................................................................................................9
4.5.2 Language Setting .......................................................................................................9
4.5.3 Buzzer ........................................................................................................................9
4.5.4 Display .......................................................................................................................9
4.6 Interface Setting..................................................................................................................12
4.7 System Information.............................................................................................................13
4.7.1 Review System Information ....................................................................................13
4.7.2 Restore Factory Settings..........................................................................................13
5. Troubleshooting .................................................................................14
6. Appendix............................................................................................14
6.1 Appendix A：Accessories ..................................................................................................14
6.2 Appendix B: General Care and Cleaning ...........................................................................15
General Care .............................................................................................................................15

1.General Safety Requirements
1
1. General Safety Requirements
Before use, please read the following safety precautions to avoid any possible
bodily injury and to prevent this product or any other connected products from
damage. To avoid any contingent danger, ensure this product is only used within
the ranges specified.
Only a qualified person should perform internal maintenance.
To avoid Fire or Personal Injury:
Use Proper Power Cord. Use only the power cord supplied with the product and
certified to use in your country.
Product Grounded. This instrument is grounded through the power cord
grounding conductor. To avoid electric shock, the grounding conductor must be
grounded. The product must be grounded properly before any connection with
its input or output terminals.
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and
markings on this product. Refer to the user manual for more information about
ratings before connecting to the instrument.
Do not operate without covers. Do not operate the instrument with covers or
panels removed.
Use the Proper Fuse. Use only the specified type and rating fuse for this
instrument.
Avoid exposed circuit. Be careful when working on exposed circuitry to avoid risk
of electric shock or other injury.
Do not operate if any damage. If you suspect damage to the instrument, have it
inspected by qualified service personnel before further use.
Use your instrument in a well-ventilated area. Please keep well ventilated and
inspect the intake and fan regularly.
Do not operate in damp conditions. To avoid short circuiting to the interior of
the device or electric shock, please do not operate in a humid environment.
Do not operate in an explosive atmosphere. To avoid damages to the device or
personal injuries, it is important to operate the device away from an explosive
atmosphere.
Keep product surfaces clean and dry. To avoid the influence of dust or moisture
in air, please keep the surface of device clean and dry.

2.Safety Terms and Symbols
2
2. Safety Terms and Symbols
Safety Terms
Terms in this manual (The following terms may appear in this manual):
Warning: Warning indicates conditions or practices that could result in
injury or loss of life.
Caution: Caution indicates the conditions or practices that could result in
damage to this product or other property.
Terms on the product. The following terms may appear on this product:
Danger: Indicates an immediate hazard or injury possibility.
Warning: Indicates a possible hazard or injury.
Caution: Indicates potential damage to the instrument or other property.
Safety Symbols
Symbols on the product. The following symbols may appear on the product:
Hazardous Voltage
Refer to Manual
Protective Earth Terminal
Chassis Ground
Public Ground

3.Quick Review
3
3. Quick Review
3.1 Panel and Interface
3.1.1 Front Panel
⑨
⑧
⑦
⑥
①
②
③
④
⑤
Figure 3-1 Front Panel Overview
①
Display Area
Display user interface.
②
Direction Key
Select menu; select parameters; Edit the cursor.
OK Key
1) Enter the menu or confirm the entered parameters.
2) Switch the display mode between Number and Curve.
③
Knob
Select the main menu or change the value, function equals
to the confirmation key.
④
On/Off Key
Turn on/off the channel.
⑤
Channel Output
Terminal
Output access of channel.
⑥
Power Button
Turn on/off the instrument.

3.Quick Review
4
⑦
Keylock Key
Press and hold this button for about 5 seconds. When you
hear a beep, the panel is locked and the lock icon is
displayed on the top of the screen. When locked, pressing
any other key has no effect. In the locked state, press and
hold this button for about 5 seconds. When you hear a
beep, the panel is unlocked.
⑧
Memory Key
5 sets of channel parameters can be stored for quick output.
⑨
System Key
System settings, interface settings, system information.
Button light instruction
On/Off key：The key lights up when the channel turns on.
3.1.2 Rear Panel
③
④
②
①
Figure 3-2 Rear Panel Overview
①
AC Power Input
Jack
AC power input interface
②
Fuse
Power fuse
③
Air Vent
Air vent
④
COM port
Connect the serial port of the instrument and external
device

3.Quick Review
5
3.1.3 User Interface
Buzzer status
Actual voltage output
Actual current output
Actual power output
Set values of voltage
Set values of current
Set values of O.V.P
Set values of O.C.P
CV: Constant Voltage output
CC: Constant Current output
Channel output status
Figure 3-3 User Interface
3.2 General Inspection
After you get a new power supply, it is recommended that you should make a check on the
instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied accessories have been already described in the "Appendix A: Enclosure" of
this Manual. You can check whether there is any loss of accessories with reference to this
description. If it is found that there is any accessory lost or damaged, please get in touch
with the distributor of our responsible for this service or the our local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the instrument
can not work normally, or fails in the performance test, please get in touch with the our
distributor responsible for this business or the our local offices. If there is damage to the
instrument caused by the transportation, please keep the package. With the transportation
department or the our distributor responsible for this business informed about it, a
repairing or replacement of the instrument will be arranged by the we.

3.Quick Review
6
3.3 Power Inspection
(1) Use the power cord supplied with the accessories to connect the instrument to
the AC power.
Warning：
To prevent electric shock, make sure that the instrument is
properly grounded.
(2) Press the power button on the front panel, the button light will be on, and the
startup screen will be displayed on the screen.
3.4 Output Inspection
Output inspection is to ensure that the instrument can achieve its rated outputs and properly
respond to operation from the front panel. For the procedures below, it is suggested that you read
"Turn On/Off the Channel Output" on page 8 and "Set the Output Voltage/Current" on page 8.
3.4.1 Voltage Output Inspection
The following steps verify basic voltage functions without load:
(1) When the instrument is under no load, select a channel and ensure the output current setting
for this channel is not at zero.
(2) Turn on the channel output, then ensure the channel is in Constant Voltage output mode.
(3) Set some different voltage values on this channel; check if the actual voltage value displayed
is close to the set voltage value, and also that the actual current value displayed is nearly to
zero.
(4) Check that if the output voltage can be adjusted from zero to the maximum rating, When it is
set to the maximum or minimum, a beep is heard, indicating that the limit has been reached.
3.4.2 Current Output Inspection
The following steps check basic current functions with a short across the power supply's output:
(1) Connect a short across (+) and (-) output terminals with an insulated test lead on this channel.
Use a wire size sufficient to handle the maximum current.
(2) Set the output voltage to the maximum rating on this channel.
(3) Turn on the channel output. Ensure the channel you used is in Constant Current output mode.
(4) Set some different current values on this channel; check if the actual current value displayed
is close to the set current value, and to check if the actual voltage value displayed is nearly
zero.
(5) Check that if the output current can be adjusted from zero to the maximum rating, When it is
set to the maximum or minimum, a beep is heard, indicating that the limit has been reached..
(6) Turn off the channel output and remove the short circuit from the output terminals.