Owon OWP H Series User manual

OWP_H Series
User manual
For product support, visit : www.owon.com.hk/download

Mar. 2022 edition V1.0.0
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: inf[email protected]

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.

Contents
1 Back Panel....................................................................................................................................................... 1
1.1 Interface.................................................................................................................................................... 1
1.2 Voltage compensation............................................................................................................................ 2
1.3 Parallel connection.................................................................................................................................. 2
2 Front panel....................................................................................................................................................... 3
2.1 Display area..............................................................................................................................................3
2.1.1 Home..................................................................................................................................................4
2.2 Operating area......................................................................................................................................... 5
2.2.1 Basic operation.................................................................................................................................5
3 Menu................................................................................................................................................................. 7
3.1 Application（APP）................................................................................................................................ 8
3.1.1 Step Mode......................................................................................................................................... 8
3.1.2 Charge Mode.................................................................................................................................... 9
3.1.3 Function Generator Mode.............................................................................................................10
3.2 Information..............................................................................................................................................12
3.2.1 Error Log..........................................................................................................................................12
3.2.2 Operating Log.................................................................................................................................12
3.2.3 Event Log........................................................................................................................................ 12
3.3 System Setting.......................................................................................................................................13
3.3.1 UI Setting.........................................................................................................................................13
3.4 User Setting............................................................................................................................................14
3.4.1 Communication Setting.................................................................................................................14
3.4.2 Function Setting............................................................................................................................. 14
3.4.3 Protect Setting................................................................................................................................ 18
3.4.4 Password Setting........................................................................................................................... 20
3.4.5 Reset................................................................................................................................................20
4 Technical Specifications.............................................................................................................................. 21
4.1 Product parameters...............................................................................................................................21
4.2 Product selection................................................................................................................................... 22
5 Appendix........................................................................................................................................................ 23
5.1 Accessory............................................................................................................................................... 23
5.2 Key description...................................................................................................................................... 24
5.3 User setting list...................................................................................................................................... 25
5.4 Warning list.............................................................................................................................................26

Figure
Figure 1: Back panel
......................................................................................................................................................
1
Figure 2: Interface
..........................................................................................................................................................
1
Figure 3: Schematic diagram of voltage compensation wiring
................................................................................
2
Figure 4: Parallel schematic diagram
...........................................................................................................................
2
Figure 6: Front panel
.....................................................................................................................................................
3
Figure 5: Display area
....................................................................................................................................................
3
Figure 7: Homes
............................................................................................................................................................
4
Figure 8: Reference setting
...........................................................................................................................................
5
Figure 9: Menu
...............................................................................................................................................................
7
Figure 10: Step Mode
....................................................................................................................................................
9
Table
Table 1: Defines of interface
.........................................................................................................................................
1
Table 2: Key description
................................................................................................................................................
5
Table 3: Application mode
...........................................................................................................................................
8
Table 4: Steps mode
.....................................................................................................................................................
8
Table 5: Charge Mode
..................................................................................................................................................
9
Table 6: Sine wave generator
.....................................................................................................................................
10
Table 7: Triangle wave generator
..............................................................................................................................
10
Table 8: Rectangular/pulse/trapezoidal wave generator
........................................................................................
11
Table 9: Line generator
...............................................................................................................................................
11
Table 10: Information
..................................................................................................................................................
12
Table 11: Error log
.......................................................................................................................................................
12
Table 12: Operating log
..............................................................................................................................................
12
Table 13: Event log
......................................................................................................................................................
12
Table 14: System setting
.............................................................................................................................................
13
Table 15: UI setting
.....................................................................................................................................................
13
Table 16: Communication setting
.............................................................................................................................
14
Table 17: Function setting
..........................................................................................................................................
14
Table 18: Output timing setting
................................................................................................................................
15
Table 19: Parallel connection
.....................................................................................................................................
16
Table 20: Interface Setting
..........................................................................................................................................
16
Table 21: Dry contact output
.....................................................................................................................................
16
Table 22: Dry contact input
........................................................................................................................................
16
Table 23: Analog interface setting
.............................................................................................................................
17
Table 24: Protect setting
.............................................................................................................................................
18
Table 25: Other protects
.............................................................................................................................................
18
Table 26: Under-voltage/under-current protection
...............................................................................................
18
Table 27: Short-circuit protect
...................................................................................................................................
19
Table 28: Switch of protects
.......................................................................................................................................
19
Table 29: Reset
............................................................................................................................................................
20

1
1Back Panel
Figure 1: Back panel
1. DC output terminal: RED "+", BLACK "-" 2. Remote voltage compensation
3. Duct outlet (No obstructions within 10 cm) 4. RS485 interface(Female)
5. CAN interface 6. Dry contact/Analog interface
7. AC Input
1.1 Interface
Figure 2: Interface
Interface
PIN
Function
Interface
PIN
Function
Digital
IO
1
Normally open contact
(Output of the dry contact)
Analog
1
Matching analog1 “+”
2
Common contact
(Output of the dry contact)
2
Matching analog1 “-”
3
Normally closed contact
(Output of the dry contact)
3
Matching analog1 “+”
4
NC
4
Matching analog1 “-”
5
Input of the dry contact
5
Input of the dry contact
6
6
RS485
1
485-A
CAN
2
CAN-L
2
485-B
7
CAN-H
3~9
NC
1/3~6/8
NC
Table 1: Defines of interface
Digital IO interface: PIN 1 to 3 is a dry contact output interface with complementary
functions of normally open and normally close. PIN2 is the common port of the dry
contact. Dry contact output capacity: 1A/30VDC or 0.15A/220VAC; PIN 5 to 6 are dry
contact input interfaces, which can be set for external control of the output, external
fault feedback, or external control of the buzzer;

2
Analog interface: Analog interface is optional, interface signals can be customized,
two analog interface definition as shown in the table above
RS485 interface: Serial communication interface(female), software using standard
Modbus-RTU protocol;
CAN interface: CAN1 and CAN2 are two internal parallel CAN bus interfaces, which
facilitate serial or parallel connection between devices. CAN communication also be
used for communication between external devices;
Note ： Analog interface is optional interface (customizable) , up to a maximum of four analog, two
analog input and two analog output. Select 1-2 analog, interface see figure above; select 3-4
analog, interface is RJ45-CAN1, 1-8 pin is defined as the positive and negative of analog
input 1, the positive and negative of analog input 2, the positive and negative of analog
output 1, the positive and negative of analog output 2. If you need analog function, please
inform us of the specific requirements in advance 。
1.2 Voltage compensation
Figure 3: Schematic diagram of voltage compensation wiring
To use the remote voltage compensation function, use twisted-pair cables with high
insulation. Positive and negative cables can not be connected inversely, as shown in the
figure above. When not in use, the compensation terminals (SENSE) PIN1 and PIN2, and
PIN3 and PIN4 need to be shorted with short cables.
1.3 Parallel connection
Figure 4: Parallel schematic diagram
The device identifies and controls the parallel output through CAN communication. The
diagram above shows the parallel connection.
Note:120 ohm is the CAN bus terminal resistor.

3
2Front panel
Figure 6: Front panel
2.1 Display area
The Home displays real-time operating status information of the device, including:
Display area: Current real-time output information;
Setting area: Setting of voltage, current and power reference values, And
voltage/current priority Settings;
Status area: Buzzer, lock key state, date and time information, working time, and dry
contact and application mode state (grey);
Mode area: Control mode and output mode;
Series/parallel status area: when multiple machines are used in series/parallel, each
device will display master/slave machine number and CAN data receiving and
receiving status of the machine (gray);
Note: 1. display elements of the status area can be hidden. When an application mode is enabled,
the status of the application mode will be displayed, and when the dry contact is used, the
corresponding status icon will be displayed.
2. Output mode include common mode and application mode. 1. Common mode:
CV(Constant voltage), CV(Constant current), CP(Constant power) or CV/CC/CP (Output is
not open); 2. Application mode: such as CV Steps(Constant voltage steps), CC
Steps(Constant current steps) and Hybrid steps in step mode(See the "Application
Patterns" section for details).
Figure 5: Display area

4
2.1.1 Home
Figure 7: Homes
Three Homes, including:
Home: displays the most comprehensive real-time working status information,
detailed in the section of "Display area";
Auxiliary Home: maximizes the real-time output information;
Waveform Home: displays output real-time information in an intuitive waveform
manner.
Note: 1. The Home is the only interface for setting voltage, current and power reference values.
2. Press "ENTER"to set the sampling rate of the waveform displayed on the waveform
Home. Whether the voltage, current and power waveform are displayed can be controlled
by pressing "VOLT", "CURR" or "POWER" key.

5
2.2 Operating area
Key
Description
Key
Description
VOLT
Voltage reference set
0~9
Number set
CURR
Current reference set
.
DOT
VOLT Double
Click
Voltage priority switching
ENTER
To Menu/ Confirm input
CURR
Double Click
Current priority switching
Switch between Home and
Auxiliary Home
VOLT+CURR
Power reference set
Knob
Description
LOCK
Lock/Unlock
Press
Menu
ON/OFF
Output ON/OFF
Confirm Input
←↑
Left/Up shift
Home：
→↓
Right/Down shift
1、Press once，Voltage set
DEL
Delete
2、Press twice，Current set
EXIT
Returns the previous level
or exit setting
3、Press 3 times，Power set
SAVE
Save current settings
Clockwise
rotation
Increase value
RECALL
Recall the saved settings
Up shift
L/R
local/remote control mode
Anti-Clock
rotation
Reduce value
CONF
Function Menu
Down shift
Table 2: Key description
The operation area includes setting area, function area, digital area and knob. See
"Appendix 1" for key details.
2.2.1 Basic operation
Figure 8: Reference setting
Voltage reference setting: Press the "VOLT" key or press the "Knob" key to edit the
voltage reference value, enter a valid value, and press "ENTER" or "knob" key to
confirm;
Current reference setting: Press the "CURR" key or press the "Knob" key twice to edit

6
the current reference value, enter a valid value, and press "ENTER" or "knob" key to
confirm;
Power reference setting: Press "VOLT" and "CURR" key simultaneously or press
"Knob" key three times to edit the power reference value, enter a valid value, and
press "ENTER" or "knob" key to confirm;
Open and close output: Press the "ON/OFF" key to open the output (The "ON/OFF"
key is light), and press the "ON/OFF" key to close the output (The "ON/OFF" key is
OFF);
Voltage/current priority switching: Close the output and double-click "VOLT" or
"CURR" key to switch the priority under the Home/auxiliary Home (Switch time is 1
seconds).
SAVE Setting: 1. Under the Home, function setting UI or protection setting UI, if the
Settings are valid, press "SAVE" key to save the common mode data; On the
application mode setting UI, if the Settings are valid, press "SAVE" key to save the
application mode data;
Recall setting: 1. On the Home/auxiliary Home, press "RECALL" key to bring up the
recall function option. Press "←↑" Or "→↓" key to select the data type and press
"ENTER" key to go to the recall UI for the data type. Press "←↑" or "→↓" key to select
the pre-called data and press "ENTER" key to confirm the callback data. 2. On the
application mode setting UI, press "RECALL" key to bring up the relevant recall UI,
press "←↑" or "→↓" key to select the pre-called data, and press "ENTER" key to
confirm the callback data;
Local/Remote mode switching: Press "L/R"to switch the local/remote mode
temporarily in the Home/auxiliary Home(for temporary test, the mode is not saved).
Buzzer control: Under the system setting UI, press "←↑" or "→↓" key to select Buzzer,
and press "ENTER" key to enter buzzer control option. Select the corresponding level,
and press "ENTER" key to confirm;
Note: 1. Common mode data includes voltage, current and power reference values as well as
parameters of function setting and protection setting in user Settings.
2. When the key triggers the setting of reference value, the preset area will be displayed
above the corresponding operated element in the setting area. Enter a preset value
through the number or knob key; When the knob triggers the setting of reference value,
the corresponding bit of the element to be operated in the setting area will flash. Through
" ← ↑ " Or " → ↓ " key to select the operation position, and then enter the preset value
through the number or knob key.
3. For local/remote mode Settings, see "LCD Menu - > User Settings - > Function setting " in
section for details.

7
3Menu
Figure 9: Menu

8
3.1 Application（APP）
1．Step Mode: 》
2．Charging Mode: 》
3．Function Generator Mode 》
Table 3: Application mode
Application modes include:
Step mode: A sequence programming function that the device supports a maximum of
50 sequences. Users can edit each step of the function according to the actual needs,
so that the device in a sequence of constant-voltage, constant-current mode output to
meet the specific test needs;
Charge mode: Applicable to charge and discharge aging test of different electric
energy storage media such as lithium battery and capacitor. Set up a maximum of 10
charging sequences, each step can be independently set voltage/current reference
value and judgment conditions to determine whether to enter the next step, can
simulate fine charging curve;
Function generator mode: This mode generates a variety of regular waveforms, such
as sine, triangular, zigzagged, rectangular, pulse, trapezoidal and Line segment, and
a combination of these waveforms and superpositions the modified waveforms onto
the DC(Voltage or current) output. The preset function will provide all necessary
parameters for the user, such as baseline, cycle number, waveform amplitude, time
and so on a complete set of configuration parameters;
3.1.1 Step Mode
Mode: Hybrid Step ▼
Num Of Steps: 3 Steps
Num Of Cycles: Infinite
1：Step Setting: XX.XXX V CV ▼
Time Setting: XXXXX S
2：Step Setting: XX.XXX V CV ▼
Time Setting: XXXXX S
3：Step Setting: XX.XXX V CV ▼
Time Setting: XXXXX S
4：Step Setting: - - - - - - - -
Time Setting: - - - - - - - -
Table 4: Steps mode
Step mode parameters:
Mode: Three mode options: Constant-voltage steps, constant-current steps and
Hybrid steps. The above mode can set voltage reference and current reference and
voltage or current reference in a single step;

9
Step number: The number of single step(range: 1 to 50) contained in a complete
cycle;
Cycle number: The number of loops that perform one full step at a time;
Single-step setting: Each step outputs the contained the reference, duration, and
mode selection content (The hybrid mode only);
Figure 10: Step Mode
3.1.2 Charge Mode
Charging Mode: Disable ▼
Num Of Steps: 3 Steps
Step Delay: XXXXX mS ▼
Dry Contact Control: Disable ▼
Num Of Cycles: Infinite
Step1: Volt Reference: XX.XXX V
Curr Reference: XX.XXX A
Judgment Volt：XX.XXX V
Judgment Curr：XX.XXX A
Charging Curr：XXXXX S ▼
Charging Time：XXXXX S ▼
Table 5: Charge Mode
Charging mode parameters：
Charging mode: Whether to enable charging mode;
Step number: The number of single step(range: 1 to 10) contained in a complete
cycle;

10
Step delay: The delay that jumps to the next step after each step is completed;
Dry contact control: Whether to enable the dry contact control function during
discharge time.
Cycle number: The number of loops that perform one full step at a time;
Single-step setting: Each step outputs a control containing reference voltage/current,
a judgment voltage/current setting, and a charge/discharge time setting;
Note: 1. Each step of the execution logic: Reference voltage and current parameters control
output ---> Detect the output voltage to reach the judgment voltage ---> The output
current detected is less than the judgment current ---> Turn off the output, enter the
charging period and time ---> At the end of the charging period, enter the discharge
period and time, if dry contact control is enabled, dry contact action ---> When the
discharge period ends, close the dry contact and go to the next step.
2. Charging time is the time from voltage and current judgment logic of each step to
discharge time (float charging time).
3. Discharge time is the time from the completion of each charge time to the next step,
during which the output will be closed. Generally used for external discharge of energy
storage medium, can enable "Dry contact control" to control the switch between charging
circuit and external discharge circuit.
3.1.3 Function Generator Mode
Wave：Sine Wave ▼
Ref：XX.XXX V CV ▼
Periods：Infinite
Parameter Of Wave：
Amplitude: XX.XXX V
Period：XXXXX S ▼
Interval Time：XXXXX S ▼
Table 6: Sine wave generator
Superimpose sine waves on the DC reference.
Wave：TriangularWave ▼
Ref：XX.XXX V CV ▼
Periods：Infinite
Parameter Of Wave：
Amplitude：XX.XXX V
Rise Time：XXXXX S ▼
Fall Time：XXXXX S ▼
Interval Time：XXXXX S ▼
Table 7: Triangle wave generator
Superimpose triangle or sawtooth waves on the DC reference.

11
Wave：Rectange Wave ▼
Ref：XX.XXX V CV ▼
Periods：Infinite
Parameter Of Wave：
Amplitude：XX.XXX V
Rise Time：XXXXX S ▼
Duration：XXXXX S ▼
Fall Time：XXXXX S ▼
Interval Time：XXXXX S ▼
Table 8: Rectangular/pulse/trapezoidal wave generator
Superimpose a rectangular, pulsed or trapezoidal wave on a DC reference.
Wave：Line Wave ▼
Ref：CV ▼
Periods：Infinite
Parameter Of Wave：
Amplitude：XX Segments
Interval Time：XXXXX S ▼
Parameter Of Segments：>>
Table 9: Line generator
Output line wave by multiple line segments.

12
3.2 Information
1．Error Log： 》
2．Working Log： 》
3．Event Log： 》
4．Version Of ARM：V1.00.RL
5．Version Of HMI：V1.00.RL
4．Version Of HW：V1.00
7．SN：WXXXXXXXXXXXXXX
Table 10: Information
Information UI includes fault log, running log, event log, and product information.
3.2.1 Error Log
1 Error Log
1．Over Volt P 20 - 12 - 12 12 : 00 : 00
2．Over Volt P 20 - 12 - 12 12 : 00 : 00
Table 11: Error log
When the device detects a fault, the fault is recorded and can be queried on the fault log
page. Each fault information contains fault type, fault date, and fault time.
3.2.2 Operating Log
2 Records The Current Page：0
1．Norm：10kwh Time：20y 12m 12d 12h
1．CvSt：300wh Time：20y 12m12d 10h
Table 12: Operating log
The device automatically records each running information and you can query on the
operating log page. Each operating information contains running mode information, output
energy, and scrolling date, time, and time information in turn.
3.2.3 Event Log
2 Records The Current Page：0
1．Sys：Init Flash Close：00.00V 00.000A Time:
2．Sys：Init Flash Close：00.00V 00.000A Time:
Table 13: Event log
The device automatically records events and you can query them on the event log
page. Each event information contains event type, event, event details, date, and time in

13
turn.
3.3 System Setting
1．Language：English ▼
2．Buzzer：All ▼
3．Date：20 y 12 m 12 d
4．Time：12 h 12 m 00 s
5．UI： 》
Table 14: System setting
System setting UI includes language, buzzer, date, time, and UI parameters.
Language: System language supports Chinese and English;
Buzzer: The buzzer scales from bottom to high score according to the severity of the
event: 1.All (including all events triggered by the key); 2.Faults and
warnings; 3.Failure occurs; 4.mute;
Date and time: System date and time Settings;
3.3.1 UI Setting
1．Background Color：Black ▼
2．Theme：Bar ▼
3．Front：Regular ▼
4．Status Icon：Show ▼
5．Data & Time：Show ▼
6．Auxiliary Home：Show ▼
7．Dim Screen Time：600 S ▼
Table 15: UI setting
UI setting parameters:
Effect Settings: Background color, theme, and font options. When the theme is set as
the progress bar, the voltage, current and power display bar will be displayed in
proportion to the actual value and rated value;
Element display: State icon (buzzer state and "LOCK" key state) and date and time
display whether the element is displayed;
Auxiliary Home: Under the Home, enter the auxiliary Home actively (Press "ENTER")
or passively (Static wait 180 seconds);
Dark screen time: Under static state, the LCD display darkens after a set time;
Note: Static state means no manual operation of keys or knobs.

14
3.4 User Setting
User settings menu includes five sub-menu: Communication Settings, Function Settings,
Protection Settings, Password Settings, and Recovery Settings.
Note: You need a password to enter user setting menu. The default password is "12345678".
3.4.1 Communication Setting
1．Baud Rate：9600bps ▼
2．CRC Alignment：Litt Endian ▼
3．Modbus Address：0x01
Table 16: Communication setting
Communication setting parameters:
Baud rate: Supports five baud rates: 9600bps, 19200bps, 57600bps, 115200bps and
230400bps. The default is 9600bps;
CRC alignment: THE CRC can be emitted as "small-endian" or "big-endian", with the
default "small-endian";
Modbus address: address range 1-247, default address is "1";
3.4.2 Function Setting
1．Startup Mode：Local ▼
2．Rise Time Of Volt：XXXXX mS ▼
3．Fall Time Of Volt：XXXXX mS ▼
4．Rise Time Of Curr：XXXXX mS ▼
5．Fall Time Of Curr：XXXXX mS ▼
6．Auto-Reco(Fault)：30 S ▼Close ▼
7．Auto-Output(Gold)：30 S Close ▼
8．Timing Output： 》
9．Parallel/Series Connection： 》
11．Interface Setting： 》
Table 17: Function setting
Function setting parameters:
Startup mode: When the device switch is closed, the device is in local control or
remote control mode;
Rise/fall time of voltage: The slope of the voltage reference change, with options in
milliseconds, seconds and minutes. This parameter takes effect only on voltage
priority;
Rise/fall time of current: The slope of the output current reference change, with
options in milliseconds, seconds and minutes. This parameter takes effect only on

15
Current priority;
Automatic fault recovery: The output of the device is disconnected due to a
recoverable fault. Whether to resume output after the fault is removed and the
specified time passes. The unit option "second" and "minute";
Auto-output(hold): The device is powered off during operation, if the auto-output was
enabled, the device automatically restores to the last output state (ON/OFF) after the
setting time;
Note: 1. The rise time is the time required for output from 0 to the rated value, and the fall time is
the opposite. As global parameters, rise and fall time are also applicable to the process of
reference value establishment and output closing in APP mode.
2. Automatic fault recovery is enabled. If the recovery fails for 10 times within 10 minutes or
10 times of the set time, the device will not attempt to recover.
3. Auto-output (hold) function is generally used in unattended scenarios. When the power
grid is off, the device will remember the output state before the power grid is off, and
actively control the output after the program sets the time after the power grid recovers.
Timing Output:
1．Time Reference：Clock ▼
The First Group：Disable ▼
Power On Time：08 h 00 m 00 s
Power Off Time：10 h 00 m 00 s
The Second Group：Disable ▼
Power On Time：14 h 00 m 00 s
Power Off Time：16 h 12 m 00 s
Table 18: Output timing setting
Time Reference: Selects the clock or power-on time (switch off) as the time reference;
Two groups time setting: Sets two groups of time parameters and sets whether the
two groups of parameters are enabled respectively;
Note: 1. Timing output function can not be used at the same time with the "ON/OFF"key. If you
need to operate the "ON/OFF"key manually, you need to turn off the output timing
function.
2. Timing output function does not take effect immediately. It takes effect after the next
power on.