OWON ODP Series Linear Programmable DC Power Supply User Manual

General Warranty

OWON warrants its products against defects in materials and workmanship for a period of 2 years (1 year for accessories) from the date of purchase by the original purchaser. This warranty is non-transferable. OWON will repair or replace defective products at its discretion. Warranty service requires notification before expiration and customer responsibility for shipping. The warranty does not cover damage from improper use, maintenance, unauthorized repair, incompatible equipment, non-OWON supplies, or modifications. Contact nearest OWON Sales and Service Offices for assistance. Register your product online at www.owon.com.cn for better after-sales service.

1. General Safety Requirements

Before operating the ODP Series power supply, read the following safety precautions to prevent bodily injury and product damage. Use the product only within specified ranges.

AC Power Input Setting: Check and set the AC power input according to your country's standards (refer to Page 11, "AC Power Input Setting"). Maintenance should only be performed by qualified technicians.

To avoid Fire or Personal Injury:

• Use Proper Power Cord: Use only the supplied and certified power cord.
• Product Grounded: The instrument must be grounded via the power cord's grounding conductor to prevent electric shock. Grounding must be proper before any connection.
• Check Terminal Ratings: Verify all ratings and markers on the product to avoid fire or shock hazards. Consult the manual for details.
• Do not operate without covers: Never operate the instrument with covers or panels removed.
• Use Proper Fuse: Use only the specified type and rating fuse.
• Avoid exposed circuit: Do not touch exposed junctions or components when the instrument is powered.
• Do not operate if in any doubt: If damage is suspected, have it inspected by qualified personnel before use.
• Use in a well-ventilated area: Ensure good ventilation and regularly inspect the intake and fan.
• Do not operate in wet conditions: Avoid operating in humid environments to prevent short circuits or electric shock.
• Do not operate in an explosive atmosphere: Operate away from explosive atmospheres to prevent device damage or personal injury.
• Keep product surfaces clean and dry: Prevent dust and moisture from affecting the device.

2. Safety Terms and Symbols

Safety Terms in this Manual:

• Warning: Indicates conditions or practices that could result in injury or loss of life.
• Caution: Indicates conditions or practices that could result in damage to the product or other property.

Terms on the Product:

• Danger: Indicates an injury or hazard may happen immediately.
• Warning: Indicates an injury or hazard may be accessible potentially.
• Caution: Indicates potential damage to the instrument or other property.

Safety Symbols on the Product:

• ⚠️ Hazardous Voltage
• [Refer to Manual] Refer to Manual
• [Earth Symbol] Protective Earth Terminal
• [Chassis Ground Symbol] Chassis Ground
• [Public Ground Symbol] Public Ground

3. General Characteristics

The OWON ODP Series are high-performance programmable linear DC power supplies. Key features include:

• Up to 100 output groups with configurable timer.
• High-resolution LCD display.
• Extremely clean ripple and noise.
• Comprehensive over-voltage, over-current, and over-temperature protection.
• User-friendly interface and panel layout.
• Variety of standard interfaces for diverse test requirements.

Features and benefits:

• Dual Independent & Separate Control Outputs.
• Outstanding line regulation rate: ≤0.01%+3mV (voltage), ≤0.1%+3mA (current).
• Outstanding load regulation rate: ≤0.01%+3mV (voltage), ≤0.2%+3mA (current).
• Low ripples noise: ≤300 µVrms / 2 mVpp.
• Four operating modes: Independent, Parallel, Series, Plus-minus.
• Up to 100 groups time settings.
• High-precision resolution output.
• 3.9-inch high-resolution (480*320 pixels) TFT LCD display.
• Interfaces: USB2.0, RS232.

4. Quick Start

This chapter covers the following topics:

• Front/Rear Panel Overview
• User Interface Overview
• General Inspection
• Power-On Check
• Output Inspection
• Working Mode Instruction
• System Menu Operation Instruction

4.1 Front/Rear Panel and User Interface

4.1.1 Front Panel

Figure 4-1: Front panel overview (example: ODP3032)

• 1 LCD: Displays the user interface.
• 2 Numeric keys area: For parameter input, including numeric keys, decimal point, and backspace.
• 3 Up and down direction key: Selects menus or changes parameters.
• 4 Enter key: Enters menus or confirms entered parameters.
• 5 Knob: Selects menus or changes parameters; pressing it is equivalent to pressing the Enter key.
• 6 Left and right direction key: Selects menus or moves the cursor.
• 7 System key: Enters the system menu.
• 8 Timer key: Enters/exits timer status.
• 9 Help key: Views the built-in help.
• 10 Channel 2 control area: Blue Volt/CV key sets output voltage; Blue Curr/CC key sets output current; Blue ON/OFF key enables/disables output.
• 11 Output terminals of Channel 2: Connectors for Channel 2 output.
• 12 Mode key: Switches between Independent, Parallel, Series, and Plus-minus modes.
• 13 Output terminals of Channel 1: Connectors for Channel 1 output.
• 14 5V output terminals: Fixed 5V output, max current 3A (ODP3032) or 5A (ODP3052).
• 15 Power button: Turns the instrument on/off.
• 16 Channel 1 control area: Orange Volt/CV key sets output voltage; Orange Curr/CC key sets output current; Orange ON/OFF key enables/disables output.
• 17 Function keys: Record key saves current output data to USB; Recall key loads stored settings; Save key saves current parameters; Set key enters timing output settings.

Instructions for panel key indicator:

• ON/OFF key: Indicator lights up when the channel is on.
• Volt/CV key: Indicator lights up in Constant Voltage mode; blinks when setting voltage.
• Curr/CC key: Indicator lights up in Constant Current mode; blinks when setting current.

4.1.2 Rear Panel

Figure 4-2: Rear panel overview

• 1 USB Host port: Connects external USB devices (e.g., USB disk).
• 2 USB Device port: Connects the instrument to a PC.
• 3 COM port: Connects external equipment via serial port.
• 4 Power socket: AC input connector.
• 5 Fuse: Use the specified fuse according to the voltage scale.
• 6 Power switch: Switches between 110V and 220V.
• 7 Fan: Fan inlet.

4.1.3 User Interface

The following describes the interfaces in Timer status; Normal status interfaces are similar.

Independent Mode

Figure 4-3: User interface in Independent mode

• 1 Output status of Channel 1: Indicates channel status.
• 2 Specified time and left time: Shows timing output status for Channel 1.
• 3 Actual output value of power for Channel 1.
• 4 Timing output mode: Sequence / Loop.
• 5 Timer range of Channel 1.
• 6 Parameter number: Current output parameter number when timing output is active.
• 7 Set values of voltage and current for Channel 1.
• 8 Actual output values of voltage and current for Channel 1.
• 9 Status and set values of O.V.P and O.C.P for Channel 1.
• 10 Status icons: Refer to "Status Icons" on P10 for details.

Parallel /Series Mode

Figure 4-4: User interface in Parallel/Series mode

• 1 Maximum ratings of voltage and current.
• 2 Channel status.
• 3 Output mode of timing output: Sequence / Loop.
• 4 Timer range.
• 5 Parameter number: Current output parameter number when timing output is active.
• 6 Specified values of voltage and current.
• 7 Specified time of current output when timing output is on.
• 8 Left time of current output when timing output is on.
• 9 Specified values of voltage and current for the next fixed time.
• 10 Status and set values of O.V.P and O.C.P.
• 11 Actual output values of voltage, current, and power.
• 12 Status icons: Refer to "Status Icons" on P10 for details.

Plus-minus Mode

Figure 4-5: User interface in Plus-minus mode

• 1 Output status of Negative: Same as Positive.
• 2 Specified time and left time: Shows timing output status for Negative.
• 3 Actual output value of power for Negative.
• 4 Timing output mode: Sequence / Loop (same as Positive).
• 5 Timer range of Negative: Same as Positive.
• 6 Parameter number: Current output parameter number when timing output is active (same as Positive).
• 7 Set values of voltage and current for Negative.
• 8 Actual output values of voltage and current for Negative.
• 9 Status and set values of O.V.P and O.C.P for Negative.
• 10 Status icons: Refer to "Status Icons" on P10 for details.

Status Icons:

• [USB Symbol] Connect as a slave device with PC
• [Record Symbol] Recording the current output
• [USB Device Detected Symbol] A USB device is detected
• [Independent Mode Symbol] Current working mode is Independent
• [Parallel Mode Symbol] Current working mode is Parallel
• [Series Mode Symbol] Current working mode is Series
• [Plus-minus Mode Symbol] Current working mode is Plus-minus
• [Buzzer On Symbol] The buzzer is on
• [Buzzer Off Symbol] The buzzer is off
• [Timer Status Symbol] The system is in Timer Status

4.2 General Inspection

Upon receiving a new ODP Series power supply, perform the following checks:

1. Check for transportation damage: Inspect the packaging and device for any damage. If damage is found, do not discard packaging until tests are complete.
2. Check accessories: Verify all supplied accessories against the list in "Appendix A: Enclosure". Contact an OWON distributor if any are missing or damaged.
3. Check the complete instrument: If the instrument's appearance is damaged, it does not work normally, or fails performance tests, contact an OWON distributor. Keep packaging if damage is transportation-related; a repair or replacement will be arranged.

4.3 Power-On Check

4.3.1 AC Power Input Setting

The ODP Series supports 110V/220V AC input. Adjust the Power Switch on the rear panel to match your country's voltage and use the appropriate fuse.

To change the input voltage scale:

1. Turn off the power button and remove the power cord.
2. Check if the installed fuse (e.g., 250 V, F3 A) matches the selected voltage scale. If not, open the cover with a screwdriver (see item 5 in Figure 4-2) and change the fuse.
3. Set the Power Switch to the correct voltage scale.

4.3.2 Power On

1. Connect the instrument to AC supply using the provided power cord. Warning: Ensure the instrument is properly grounded to avoid electric shock.
2. Press the power button. The orange and blue keys will light up, and the screen will display the boot screen.
3. Press any key to enter.

4.4 Output Inspection

Verify the instrument's rated outputs and front panel responsiveness. Refer to "Working Mode" (P13), "Turn On/Off the Channel Output" (P17), and "Set the Output Voltage/Current" (P17) for procedures.

4.4.1 Voltage Output Inspection

Steps for basic voltage functions without load:

1. Power on the instrument with no load. Ensure output current settings are non-zero.
2. Turn on the channel output. The ON/OFF and Volt/CV keys will light up, indicating Constant Voltage mode.
3. In each working mode, set various voltage values. Check if the displayed actual voltage matches the set value and if the actual current is near zero.
4. Verify that the output voltage can be adjusted from zero to its maximum rating.

4.4.2 Current Output Inspection

Steps for basic current functions with a short across output terminals:

1. Power on the instrument.
2. Connect a short across the (+) and (-) output terminals using an insulated test lead sufficient for the maximum current.
3. Set the output voltage to its maximum rating.
4. Turn on the channel output. The ON/OFF and Curr/CC keys will light up, indicating Constant Current mode.
5. In each working mode, set various current values. Check if the displayed actual current matches the set value and if the actual voltage is near zero.
6. Verify that the output current can be adjusted from zero to its maximum rating.
7. Turn off the channel output and remove the short wire.

4.5 Working Mode

The ODP Series supports four working modes: Independent, Parallel, Series, and Plus-minus. Use the [Mode] key to switch between them. Refer to "User Interface" on P7 for mode-specific interfaces.

4.5.1 Icons and Ratings

The following table shows status icons and voltage/current ratings for each mode:

The 5V output terminals provide a fixed 5V when the instrument is powered on, with a maximum output current of 3A (ODP3032) or 5A (ODP3052).

4.5.2 Connections

Example: ODP3032

Independent Mode Connections:

5V/3A terminals connect to the positive (+) and negative (-) terminals of the power supply.

Parallel Mode Connections:

Connect CH1 (main channel) and CH2 (auxiliary channel) terminals. For normal output, connect the load to the main channel (CH1). Connecting to the auxiliary channel (CH2) may not ensure normal output.

Series Mode Connections:

Connect CH1 and CH2 terminals.

Plus-minus Mode Connections:

Connect the negative terminal of CH1 to the "Minus" point, the positive terminal of CH1 to the "Ground" point, and the positive terminal of CH2 to the "Plus" point.

4.6 System Menu Operation

1. Display the menu: Press the [System] key.

2. Choose the menu:

• Use the ⬆️/⬇️ direction keys or the [Knob] to navigate menu items.
• Press any direction key, the [Enter] key, or the [Knob] to enter a submenu. Press the ⬆️/⬇️ direction keys to return to the main menu.
• In submenus, use ⬆️/⬇️ direction keys or the [Knob] to navigate submenu items.

3. Enter the menu: Press the [Enter] key or the [Knob] to select a menu item.

4. Exit the menu: Press the [System] key to close the menu or pop-up box.

Note: [System → CH1 → O.V.P] means entering the CH1 item in the System menu and then selecting the O.V.P submenu.

5. Front Panel Operation

This chapter covers:

• How to Turn On/Off the Channel Output
• Set the Output Voltage/Current
• Over Voltage/Current Protection
• Timing Output
• Save/Recall/Record Functions
• System Settings
• How to Use Built-in Help

5.1 Turn On/Off the Channel Output

Independent Mode

Press the orange [ON/OFF] key for Channel 1 and the blue [ON/OFF] key for Channel 2. The [ON/OFF] indicator lights up when the channel is active.

Parallel, Series and Plus-minus Mode

Press the orange [ON/OFF] key to turn the channel output on/off. The blue [ON/OFF] key is inactive.

5.2 Set the Output Voltage/Current

Set output voltage/current via the input box. Refer to "Icons and Ratings" on P13 for rated ranges. Note: Output voltage/current cannot be set in Timer status; exit Timer status first.

Independent mode

1. Press the orange [Volt/CV] or [Curr/CC] key for Channel 1 to open the input box.
2. The key light blinks for input. Change values using the [Knob] or ⬆️/⬇️ keys (for value adjustment) or ⬅️/➡️ keys (to move cursor). Alternatively, use numeric keys to input a value directly, overwriting the previous one.
3. Press the [Enter] key to confirm.

Similarly, use the blue [Volt/CV] or [Curr/CC] keys for Channel 2.

Parallel/Series mode

1. Press the orange [Volt/CV] or [Curr/CC] key to open the output voltage/current input box.
2. Input box operation is the same as in Independent mode.

Plus-minus mode

1. Press the orange [Volt/CV] or [Curr/CC] key for Negative output to open the input box.
2. Input box operation is the same as in Independent mode.

Use the blue [Volt/CV] or [Curr/CC] keys for Positive output.

Note: Inputting a value outside the rated range will prompt "ERROR". In Series mode, the minimum current is 0.1A; in other modes, it is 0.02A.

5.3 Over Voltage/Current Protection

When Over Voltage Protection (O.V.P) or Over Current Protection (O.C.P) is enabled, the instrument cuts off output if the voltage/current reaches the set O.V.P/O.C.P value. The value will flash red, and a buzzer may sound. Note: After adjustments, the channel must be restarted.

This function protects the load by preventing output from exceeding load ratings. O.V.P/O.C.P can be set for each working mode and status (normal, timer). Normal status settings apply to normal status, and timer status settings apply to timer status.

Note: In Plus-minus mode, if either Positive or Negative output reaches its O.V.P/O.C.P, the output is disabled.

5.3.1 Set O.V.P

1. Enter O.V.P setting menu:
   • Independent Mode: Press [System] key, enter [System → CH1 (CH2) → O.V.P].
   • Parallel, Series Mode: Press [System] key. In normal status, enter [System → O.V.P]; in timer status, enter [System → Pro Set → O.V.P].
   • Plus-minus Mode: Press [System] key, enter [System → Positive (Negative) → O.V.P].
2. A setting box appears. Use ⬆️/⬇️ keys to switch O.V.P state between "ON" or "OFF".

Note: In Plus-minus mode, O.V.P status for Positive and Negative is consistent. Values can be set separately.

3. Use numeric keys to enter the O.V.P value. Maximums: 31.5V (Independent, Parallel, Plus-minus), 63V (Series). Press [Enter] to confirm.

5.3.2 Set O.C.P

1. Enter O.C.P setting menu:
   • Independent Mode: Press [System] key, enter [System → CH1 (CH2) → O.C.P].
   • Parallel, Series Mode: Press [System] key. In normal status, enter [System → O.C.P]; in timer status, enter [System → Pro Set → O.C.P].
   • Plus-minus Mode: Press [System] key, enter [System → Positive (Negative) → O.C.P].
2. A setting box appears. Use ⬆️/⬇️ keys to switch O.C.P state between "ON" or "OFF".

Note: In Plus-minus mode, O.C.P status for Positive and Negative is consistent. Values can be set separately.

3. Use numeric keys to enter the O.C.P value. Maximums: 3.15A (Independent, Series, Plus-minus), 6.3A (Parallel). Press [Enter] to confirm.

5.4 Timing Output

The timing output function allows up to 100 groups of timer parameters. When enabled, the instrument outputs pre-specified voltage and current for pre-specified times. Special O.V.P/O.C.P can be set for timer status.

5.4.1 Enter/Exit Timer Status

Press the [Timer] key to enter/exit timer status. The [Timer Status Symbol] icon indicates timer status is active.

5.4.2 Timer Setting

Set timer parameters (voltage, current, output time) before enabling timing output. Up to 100 groups are supported.

In timer status, press the [Set] key to enter/exit the timer setting interface. Press the [Mode] key to switch between the four working modes' timer setting interfaces.

Figure 5-1: Timer Setting Interface in Independent Mode

The selected parameter is highlighted. In Independent or Plus-minus mode, use the orange [ON/OFF] key for the left parameter area and the blue [ON/OFF] key for the right parameter area. Use ⬆️/⬇️ keys to change parameter items. After selection, use numeric keys to enter the value and press [Enter] to confirm. Use ⬅️/➡️ keys to navigate between setting pages.

Note: If an input value exceeds the current working mode's rating, it will be automatically adjusted to the maximum rating upon confirmation. In Plus-minus mode, Negative and Positive output times are consistent and can be set together.

5.4.3 Timer Range

Timer range setting defines the last timer parameter group number and output mode. The "TimerRng" submenu is available only in timer status. When timing output is on, parameters from 0 to the set number are output sequentially or in a loop.

1. In timer status:
   • Independent Mode: Press [System] key, enter [System → CH1 (CH2) → TimerRng].
   • Parallel, Series Mode: Press [System] key, enter [System → TimerRng].
   • Plus-minus Mode: Press [System] key, enter [System → Positive → TimerRng].
2. The timer range setting box appears. Enter a number (0-99) using numeric keys. Use ⬅️/➡️ keys to switch between Sequence and Loop. Press [Enter] to confirm.

5.4.4 Turn On/Off Timing Output

In timer status:

• Independent Mode: Press orange [ON/OFF] for Channel 1, blue [ON/OFF] for Channel 2.
• Parallel, Series or Plus-minus Mode: Press orange [ON/OFF] key.

Note: Closing the channel output during timing resets the timer. Turning the channel on again restarts the timing output and timer.

5.5 Save/Recall/Record

The ODP Series supports saving, recalling, and deleting setting parameters using USB flash devices and local storage. Channel data can be recorded into a TXT file on a USB disk. Connect a USB disk to the USB Host interface (Figure 4-2). A USB icon will appear on the screen upon successful connection.

5.5.1 Save System Parameters

In Normal Status, press the [Save] key to save current working mode, output voltage/current, and O.V.P/O.C.P parameters. You can name the files. This function is unavailable in Timer Status.

1. In Normal Status, press [Save] to enter the interface (press again to exit). Use ⬆️/⬇️ keys to select storage location ("Local" or "UDisk"). Use the [Knob] to change characters in the "Save name" box. Press ➡️ to add characters, ⬅️ to move the cursor, and ⬅️ to delete the selected character.
2. Press [Enter] to store after editing the file name.

5.5.2 Recall and Delete System Parameters File

1. Press the [Recall] key to enter the interface (press again to exit). Use ⬆️/⬇️ keys to choose the storage location. Press the ⬅️ key to display the list of system parameters files.
2. The list shows file names and stored dates. Use the [Knob] or ⬆️/⬇️ keys to select a file, then press [Enter].
3. Two options appear: "Load" and "Delete". Use the [Knob] or ⬆️/⬇️ keys to switch between options. Press [Enter] to confirm.

5.5.3 Record the Output

Insert a USB disk before using this function. Pressing the [Record] key records current channel data into a TXT file on the USB disk.

1. Press the [Record] key; use numeric keys to set the interval.
2. Press the [Enter] key to start recording. A [Record Symbol] icon will appear on the status bar during recording.
3. Press the [Record] key again to stop recording.

5.6 System Settings

System settings are managed via the System Menu. Refer to "System Menu Operation" on P14 for guidance.

5.6.1 Set Language

Press the [System] key, enter [System → Language], and choose the desired language (e.g., Chinese, English).

5.6.2 Set Bright

Press the [System] key, enter [System → Display → Bright]. Use ⬆️/⬇️ keys or the [Knob] to adjust screen brightness (1-10).

5.6.3 Set Screen Saver Time

The screen saver activates after a set period of inactivity. Press any key to resume. Press the [System] key, enter [System → Display → ScrSaver]. Use ⬆️/⬇️ keys or the [Knob] to adjust screen saver time (1-99 minutes). Setting to "00" disables the screen saver.

5.6.4 Set System Time

Press the [System] key, enter [System → Sys Set → SysTime]. Use ⬆️/⬇️ keys or the [Knob] to set values. Use ⬅️/➡️ keys to move the cursor. Press [Enter] to confirm.

5.6.5 Buzzer

Press the [System] key, enter [System → Sys Set → Buzzer] to turn the buzzer on/off. An indicator icon appears on the status bar when the buzzer is on. A key tone sounds on key presses, and a buzzing sound indicates system prompts (e.g., O.V.P/O.C.P cutoff). An indicator icon appears when the buzzer is off.

5.6.6 View System Information

Press the [System] key, enter [System → SysInfo] to view Serial Number, Software Version, and Hardware Version.

5.6.7 Set as Default

Press the [System] key, choose [System → Default], and press [Enter] to restore factory defaults. See the table below for default values.

5.7 Use Built-in Help

1. Press the [Help] function button to display the catalog.
2. Use ⬆️/⬇️ keys or the [Knob] to choose a help topic.
3. Press the [Enter] key to view topic details; press the ⬅️ key to return to the catalog.
4. Press [Help] again to exit, or perform other operations.

6. Communication with PC

The ODP Series Power Supply supports PC communication via USB or COM interface, allowing parameter setting, output control, and real-time output value display.

1. Install the software: Install the ODP communication software from the supplied CD.
2. Connect the instruments: Use a USB data cable to connect the instrument's USB Device port to a PC's USB port, or a data cable to connect the COM port to a PC's COM interface.
3. Install the driver: When the power supply turns on, a dialog will guide driver installation from the "USBDRV" folder (e.g., "C:\Program Files\ODP\USBDRV").
4. Use the software: Run the ODP software. Click "Menu" (top right), then "Communications → Ports-Settings" to configure communication parameters. A successful connection turns the bottom right corner information green. For operation guidance, select "Communications → Help → Help".

Figure 6-1: The Power Supply connects with PC successfully (Shows the ODP Digit Power Software interface with connected channels and settings.)

7. Troubleshooting

1. The instrument is powered on but no Display.

• Check power connection.
• Verify the Power Switch is set to the correct voltage scale.
• Check the fuse below the AC Power socket for proper installation and condition (cover can be pried open with a screwdriver).
• Restart the instrument after checking.
• If the problem persists, contact OWON service.

2. The output is abnormal:

• Check if output voltage is set to 0V; adjust if necessary.
• Check if output current is set to 0A; adjust if necessary.
• In timer status, check if any timer voltage/current setting is 0; adjust if necessary.
• If the problem persists, contact OWON service.

3. Cannot identify the USB device correctly:

• Ensure the USB device is in good condition.
• Confirm the USB device is a flash drive; hard disks are not supported.
• Restart the instrument and reinsert the USB flash device.
• If the problem persists, contact OWON service.

8. Technical Specifications

Specifications are based on operation for at least 30 minutes under specified operating temperature.

Interval Period of Adjustment: One year is recommended for the calibration interval period.

9. Appendix

9.1 Appendix A: Enclosure

Standard Accessories:

• A power cord fitting the destination country's standard.
• A USB data cable.
• A CD (PC link application software).
• A User Manual.
• A Spare Fuse.

9.2 Appendix B: General Care and Cleaning

General Care: Do not store or leave the instrument where the liquid crystal display is exposed to direct sunlight for long periods.

Caution: Avoid exposing the instrument to sprays, liquids, or solvents.

Cleaning: Inspect the instrument as operating conditions require. To clean the exterior:

1. Wipe dust with a soft cloth. Avoid scuffing the LCD protection screen.
2. Disconnect power before cleaning. Use a damp soft cloth (not dripping). Soft detergent or fresh water is recommended. Do not use corrosive chemical cleaning agents.

Warning: Before re-operation, ensure the instrument is completely dry to prevent electrical short circuits or bodily injury from moisture.