1. Unboxing and Basic Familiarization with the Equipment

1.1 Key Technical Specifications

LISUN Model	ESD61000-2	ESD61000-2A	ESD61000-2C
Relay Brands	Chinese Brand: Mechanical life of approximately 200000 cycles	Kilovac (U. S.): Mechanical life of approximately 1 million cycles
Output Voltage	0.1–20 kV ±5%	0.1–30 kV ±5%
Output Voltage Polarity	Positive, Negative, Alternating Positive and Negative
Resistor-Capacitor Kit	150 pF/330 Ω (replaceable)		150 pF/330 Ω, 150 pF/2000 Ω, 330 pF/2000 Ω, and 330 pF/330 Ω (interchangeable)
Discharge Current Rise Time	0.6–1 ns
Testing Features	Single Test, Count Test, 20 PPS, IEC Level, Programming Mode, Custom Mode, Contact Discharge, Air Discharge, Interval Discharge
Trigger Mode	Manual/Automatic
Number of Discharges	1–9999
Discharge Interval	0.05 s–99.99 s
Discharge electrode	Pointed-tip electrodes (contact discharge), round-tip electrodes (air discharge)		Pointed-tip electrode (contact discharge), round-tip electrode (air discharge), large round-tip electrode with a diameter of 30 mm (air discharge)
Power Supply	AC 100 V–240 V, 50/60 Hz
Complies with the standards	GB/T 17626.2 (IEC/EN 61000-4-2)		Automotive Electronics GB/T 19951 (ISO 10605), GB/T 17626.2 (IEC/EN 61000-4-2)

1.2 Unboxing and Checking the Contents

1.2.1 Unpacking and Visual Inspection

When unpacking the device, handle it gently to avoid scratching the outer casing with sharp tools. After unpacking, first inspect the exterior of the device to ensure there is no visible deformation or dents, and that the buttons are not damaged or loose.

If you notice any damage or deformation to the device or its accessories, do not turn it on. Please contact us immediately.

1.2.2 Main Unit and Accessories

Host Devices: ESD61000-2 Series Electrostatic Discharge Simulators, as shown below:

Figure 1

Note: The main unit of the Electrostatic Discharge Simulator and the electrostatic discharge gun are integrated into a single unit and cannot be disassembled.

Standard accessories include: ① power cord; ② electrostatic gun mount; ③ electrostatic cloth; ④ replaceable resistor-capacitor kit; ⑤ ground wire; ⑥ pointed electrode (contact discharge), round-tip electrode (air discharge), and 30mm-diameter large round-tip electrode (air discharge).

Figure 2

Note: Only the ESD61000-2C model includes multiple interchangeable RC kits and a large 30mm-diameter round-head electrode.

Optional Equipment 1: ESD-DESK Electrostatic Test Bench; the electrostatic test bench includes the following accessories.

Accessories	Note
Test Bench	Assembled dimensions: 1600 × 800 × 800 mm
Reference Metal Grounding Plate	Length 2800 × Width 1800 × Thickness 1.0 mm
Vertical Coupling Plate	500 (L) × 500 (W) × 1.0 mm (Thickness)
Horizontal Coupling Plate	Length 1600 × Width 800 × Thickness 1.0 mm
Insulated Mat	Length 1450 × Width 600 × Thickness 0.5 mm
470 kΩ Resistor Cable	1400 mm long, two pieces

Figure 3

Optional Equipment 2: ESD-CALA Electrostatic Discharge Gun Calibration Kit, as shown below:

Figure 4

Optional Equipment 3: ESD-FCP Automotive Electronic Electrostatic Field Coupling Plate, as shown below:

Figure 5

The download links for the digital user manual, warranty card, and other documents have been sent to you via email. Please download them as soon as possible. If you missed the email, please feel free to contact us to request the download links again.

2. Safety Precautions

2.1 Placement Guidelines

Place it on a stable work surface; avoid tilting or inverting it, and keep it away from sources of vibration;

The equipment must be placed at least 500 mm away from walls and surrounding structures (such as other testing equipment and shelving) to facilitate maintenance; at least 1000 mm of space must be left in front of the equipment to ensure smooth operation, and the surrounding area must be free of obstructions.

2.2 High-Voltage Safety Standards

2.2.1 Security Check

Verify that the power supply is compatible with the equipment, ensure that the power supply is properly grounded, and check that the grounding wire is free of damage or looseness;

Grounding Requirements: The host unit’s protective grounding terminal (PGND) must be connected to a metal reference grounding plate; the grounding resistance must be ≤4Ω; the grounding cable must be securely connected, with no looseness or breaks;

Note that reference ground plates and coupling plates must be connected to the protective ground, and all ground connections must have low impedance to prevent potential differences from occurring during discharge;

2.2.2 Safety Requirements for Operational Procedures

Operators must undergo professional training and be familiar with this manual and the relevant standards. Non-professionals are prohibited from operating or disassembling the equipment. The equipment contains high-voltage circuits; opening the cover may pose an electric shock hazard. Contact the manufacturer’s technical staff for repairs;

After the equipment is powered on, do not touch the discharge gun’s electrode tip, high-voltage connectors, or high-voltage cables;

Operators should ensure their hands are dry and free of metal jewelry; it is recommended that they wear insulated gloves while working;

During testing, unauthorized personnel are prohibited from remaining within 1 meter of the EUT to prevent accidental electric shock or interference from electrical discharges;

Before replacing the electrodes, you must first ensure that the high-voltage output has been turned off (the HV indicator light is off) and wait at least 5 minutes to ensure that the internal high-voltage capacitor is completely discharged;

Do not eat or drink during the test to prevent accidents caused by electric shock;

When multiple people are involved, clearly define roles and responsibilities, and confirm with each other before the test begins to avoid errors.

2.3 Other

For matters not covered in this manual, please proceed with caution or contact us.

3. Equipment Overview

3.1 Introduction to the Front Panel

Number	Note
①	Touchscreen
②	High-Voltage Indicator Light
③	Static discharge gun and grounding clamp—not removable

Figure 5.1

3.2 Introduction to the Back Panel

Number	Note
①	Power cord receptacle (with fuse) for connecting the device to a suitable power source
②	Power Switch
③	PGND Protective Ground Terminal
④	USB port: Allows you to connect a USB mouse to control the touchscreen, or a USB flash drive to update the software

Figure 5.2

4. Introduction to the Touchscreen Program

4.1 Initial Screen

Turn on the device and wait a moment. Once the program has finished loading, it will automatically open the initial screen: ① Switch between Chinese and English; ② Access the parameter settings screen; ③ Product information page.

Figure 10

4.2 Parameter Settings Interface

① Discharge polarity setting; ② Discharge voltage setting; ③ Discharge mode selection: Contact Discharge or Air Discharge. This interface uses Contact Discharge as an example; ④ Trigger mode selection: Trigger mode can only be selected in Contact Discharge mode. In Air Discharge mode, according to standards, only the “Single” trigger mode can be used;⑤ Discharge count setting; ⑥ Discharge interval setting; ⑦ If automatic functions (automatic polarity switching, automatic voltage switching) are required, click here to configure them; ⑧ After clicking “Start,” the device will enter the charging state.

Figure 11

Regarding trigger modes:
“Single” means one discharge occurs each time the trigger of the discharge gun is pulled;
“Repeat” means that after the trigger is pulled and released, the instrument enters an automatic repeat discharge mode and counts the number of discharges; once the set number of discharges is reached, it automatically exits the discharge mode. Pressing and releasing the trigger again during this period will pause the discharges; pressing and releasing it once more will resume discharges, and the count will continue.
“20PPS” refers to the 0.05-second rapid scan mode, which operates the same way as the “Repeat” mode, except that it automatically performs repeated discharges at 0.05-second intervals.

4.3 Automatic Function Interface

① Check the “Polarity Switching” box to automatically switch polarity during the test; ② Check the “Voltage Scan” box and enter the start voltage, end voltage, and step voltage in the input fields; the test will then run automatically according to the settings.

Figure 12

4.4 Charging and Testing Interface

① Testing may only begin after charging is complete—that is, once 100% is displayed here—and the high-voltage indicator light on the front of the main unit illuminates; ② Once charging is complete, click “Trigger” or pull the trigger on the discharge gun to perform an electrostatic discharge test; ③ Click “Stop” to return to the parameter settings screen.

Figure 13

Note 1: When the trigger mode is set to “single shot,” the interval between trigger pulls must be at least 1 second.

Note 2: When testing using the automatic function, the program will automatically return to the parameter settings screen when switching polarity or voltage, without requiring any manual intervention. It will then automatically proceed to the charging and testing screen. Only after the device has finished recharging can you click “Trigger” or pull the trigger on the discharge gun to continue the test.

5. Preparations Before the Test

5.1 Preparation of the Test Environment

Temperature: Adjust the laboratory temperature to 23°C ± 2°C;

Humidity: Use a dehumidifier or humidifier to maintain relative humidity between 45% and 75%; testing in environments where condensation occurs is prohibited;

The premises must be free of strong electromagnetic interference, corrosive gases, flammable or explosive materials, and dust, and must be well-ventilated to prevent sparks from causing hazards;

Atmospheric pressure: Ensure it is within the range of 86–106 kPa. If the laboratory is located at a high altitude, record the atmospheric pressure value for inclusion in the test report.

5.2 Connecting Devices

5.2.1 Equipment Placement

① Metal reference ground plate; ② Electrostatic Discharge Simulator; ③ ESD discharge gun; ④ Discharge gun ground clamp; ⑤ Wooden test table; ⑥ Horizontal coupling plate (HCP); ⑦ Insulating mat; ⑧ Vertical coupling plate (VCP).

Figure 6

5.2.2 Grounding System Connections

Main Unit Grounding: Use a grounding wire to securely connect the PGND terminal on the back of the main unit to a metal reference ground plate, ensuring good contact;

Grounding the Discharge Gun: Connect the discharge gun’s grounding clamp to a metal reference ground plate to prevent induced interference;

Coupling Plate Grounding: The horizontal and vertical coupling plates are connected to the reference metal grounding plane via 470 kΩ resistive cables. The resistors must be securely fastened, capable of withstanding the test voltage, and protected against short circuits.

Grounding via a Reference Metal Grounding Plate: The reference metal grounding plate must be securely connected to the ground to ensure that the grounding resistance of all grounding wires is ≤4 Ω.

5.2.3 Installation of Discharge Gun Accessories

Replacing the Electrodes: Replace the corresponding electrodes as needed. To remove an electrode, turn it counterclockwise; to install it, turn it clockwise.

Figure 7

Replacing the Resistor-Capacitor Kit: If you have purchased multiple resistor-capacitor kits, unscrew the cover of the kit marked in the image below by turning it counterclockwise:

Figure 8

Replace the corresponding resistor-capacitor assembly, then reinstall it by turning it clockwise.

Figure 9

5.3 Preparation of the EUT (Equipment Under Test)

5.3.1 Installation and Securing of the EUT

The distance between the EUT and walls, other conductive objects (including operators), shall be at least 1 m;

Benchtop EUT: Place the EUT on a 0.5 mm-thick insulating mat positioned above the horizontal coupling plate. The distance between the edge of the EUT and the edge of the coupling plate shall be no less than 0.1 m. If the EUT is too large, two test benches may be joined together, provided that the overlapping portion of the coupling plates is no less than 0.3 m;

Floor-mounted EUT: Place the EUT on a 0.1 m thick insulating mat positioned above the metal reference ground plate. The distance between the EUT and the vertical coupling plate shall be 0.1 m, and the dimensions of the vertical coupling plate shall be 0.5 × 0.5 m²;

The EUT must be securely fastened to prevent displacement during testing, while maintaining its normal installation configuration (e.g., mounting brackets and wiring methods consistent with actual use).

5.3.2 Power Supply and Wiring of the EUT

Connect the power supply in accordance with the EUT’s rated power supply requirements. Route the power cord according to the actual usage conditions to prevent it from becoming tangled with the discharge gun cable;

If the EUT requires a signal cable, the signal cable must be kept away from the reference metal ground plane and the coupling plate, and its length must correspond to the actual application; use shielded cable and ground it properly when necessary;

The EUT must be powered on and allowed to warm up in advance to reach its normal operating state (e.g., by running the test software and outputting the rated signal) to ensure it is in a stable operating mode during testing.

5.4 Confirmation of Standards and Test Procedures

5.4.1 Determination of Severity Levels

Based on the EUT’s installation environment and usage scenarios, select the severity level in accordance with GB/T 17626.2-2018. Common severity levels are as follows:

Severity Level	Contact Discharge Voltage (kV)	Air Discharge Voltage (kV)	Applicable Scenarios
Level 1	2		Environments with high humidity (≥35%) and no synthetic fabrics
Level 2	4		Moderate humidity (10%–35%) and an environment with a small amount of synthetic fabric
Level 3	6	8	Environments with low humidity (≤50%) and a high proportion of synthetic fabrics (e.g., offices)
Level 4	8	15	Low humidity (≤10%) and environments with a high concentration of synthetic fabrics (such as drying rooms)
Special Grade	Custom		To be determined through consultation between the manufacturer and the user

5.4.2 Test Modes and Parameter Design

Discharge Mode: Determine whether to use contact discharge (conductive surface of the EUT), air discharge (insulating surface of the EUT or socket), or indirect discharge (discharge via a coupling plate).

Key Parameters: Discharge voltage, polarity (positive/negative/alternating), number of discharges (typically 10 per point for single-polarity), discharge interval (1 s for standard mode, 0.05 s for fast scanning), trigger mode (contact discharge: single/repeat/20 PPS; air discharge: single only).

Note: When the trigger mode is set to 20 PPS, the discharge interval automatically changes to 0.05 s.

Test Point Planning: List key test points on the EUT, such as accessible conductive surfaces, insulated surfaces, and sockets, to ensure coverage of all areas that operators may come into contact with (see Appendix A of GB/T 17626.2-2018).

6. Operating Procedures for Electrostatic Discharge Testing (Reference: GB/T 17626.2-2018)

6.1 Contact Discharge Test (Testing of the EUT’s Conductive Surfaces)

Hold the discharge gun and position the conical electrode tip vertically against the EUT’s conductive test point, ensuring good contact (no gap);

Pull the trigger of the discharge gun (single-shot mode) or pull and release the trigger once (continuous/20 PPS mode) to complete a single discharge or a continuous discharge;

After discharging the specified number of times at each test point, move the discharge gun to the next test point and repeat the test;

During testing, observe the EUT’s operating status in real time (e.g., whether the display is functioning normally, whether any errors are reported, and whether any functions are interrupted), and record any anomalies.

Note: In single-discharge mode, to simulate a single electrostatic discharge, the charge on the test equipment should be removed using an antistatic cloth before each electrostatic discharge pulse is applied.

6.2 Air Discharge Test (EUT Insulation Surface/Socket Test)

Hold the discharge gun and position the spherical electrode tip away from the EUT test point (at a distance of at least the voltage-corresponding distance—1 mm for 1 kV; for example, 15 kV requires a distance of at least 15 mm);

Pull the trigger of the discharge gun and hold it down, slowly moving toward the test point at an angle perpendicular to the EUT’s surface until a discharge spark occurs;

Immediately after the spark is generated, release the trigger and pull the discharge gun backward (to prevent multiple discharges), thereby completing a single air discharge;

After a 1-second interval, perform the next discharge test until the specified number of discharges is completed (10 discharges per point, 5 each for positive and negative polarities, or as required by the standard);

During testing, observe whether the EUT exhibits any functional abnormalities, and record the location of the discharge points and the nature of the abnormalities.

Note: In single-discharge mode, to simulate a single electrostatic discharge, the charge on the device under test should be removed using an antistatic cloth before applying each electrostatic discharge pulse.

6.3 Indirect Discharge Test (Coupled-Plate Discharge Test)

6.3.1 Parameter Settings

Set the discharge mode to “Contact” and the trigger mode to “Repeat”;

Enter the discharge voltage (based on the severity level), the number of discharges (10 per side), and the discharge interval (1 s);

6.3.2 Discharge Operation

Place the conical electrode tip of the discharge gun in vertical contact with the surface of the coupling plate (select 3 discharge points evenly spaced across the horizontal coupling plate and 2 discharge points on the vertical coupling plate);

Pull the trigger to start continuous discharge; after completing the set number of discharges, move to the next discharge point;

After completing the discharge point tests on all coupling plates, record whether the EUT is affected by indirect discharge interference.

6.4 Recording of Test Results

See Appendix B of GB/T 17626.2-2018:

Level	Definition	By decision
A	Performs normally within the limits specified by the manufacturer, client, or purchaser	Passed without conditions
B	A temporary loss or reduction in function or performance that resolves on its own once the disturbance ceases, without requiring operator intervention	Requires consultation with the manufacturer/user; is generally considered approved.
C	A temporary loss or reduction in function or performance that requires operator intervention or a system reset to restore normal operation.	This must be discussed with the manufacturer/user, depending on the application.
D	Loss of functionality or reduced performance resulting from hardware or software damage, or data loss	Unconditional Failure

7. Post-Test Procedures

7.1 Test Termination Procedure

Once all test points have been completed, or when you click “Stop” to end the test, the high-voltage indicator light will turn off, and the program will automatically return to the parameter settings screen;

Turn off the power to the EUT, and disconnect the EUT from the power supply and signal cables;

Replace the EUT with another one for testing, or turn off the power switch on the main unit of the Electrostatic Discharge Simulator.

7.2 Equipment and Workspace Organization

Remove the discharge electrode tip, clean it (to remove any dirt from the tip), and store it properly (to prevent wear on the tip);

Clean the surface of the main unit (wipe it down with a dry, soft cloth), the discharge gun, the coupling plate, the reference metal grounding plate, and other components.

7.3 Long-Term Storage Requirements

When the equipment is not in use for an extended period, it should be stored in a dry, well-ventilated environment (temperature 10°C–40°C, relative humidity ≤60%) to avoid moisture, vibration, and direct sunlight;

Before storage, disconnect all connections, pack components such as the electrode head, cables, and coupling plate separately, and place a dust cover over the main unit;

Turn on the device for 30 minutes each month to prevent internal components from becoming damp and deteriorating.

8. Daily Maintenance and Care of Equipment

8.1 Weekly Maintenance

8.1.1 Electrode Head Maintenance

Inspect the contact discharge electrode tip. If the tip is worn, dull, or deformed, replace the electrode promptly to prevent any impact on discharge performance. Check the air discharge electrode tip for scratches or stains, and clean it with a cotton swab dipped in anhydrous ethanol.

8.1.2 Maintenance of Cables and Connectors

Check the outer sheath of high-voltage cables for damage or cracks. If any damage is found, stop using the cable immediately and contact the manufacturer to have it replaced;

8.2 Monthly Maintenance

8.2.1 Resistor-Capacitor Kit Inspection

Unscrew the cap of the discharge gun’s RC circuit kit and check whether the internal 150 pF capacitor and 330 Ω resistor are loose or oxidized; if oxidized, clean the leads or replace the components;

Make sure the cap on the RC kit is tightly screwed on to prevent high-voltage leakage during testing.

8.2.2 Calibration of Discharge Parameters (See GB/T 17626.2-2018, Section 5.4)

Measure the discharge voltage using a calibrated high-voltage meter; the error must be within ±5% (for voltages above 1 kV) or ±10% (for voltages between 0.1 kV and 1 kV);

Measure the discharge current waveform using a 1000 MHz bandwidth oscilloscope to verify that parameters such as the rise time (0.8 ns ± 25%) and peak current meet the standard requirements;

If the parameters are out of tolerance, contact the manufacturer for professional calibration; do not adjust the internal potentiometer yourself.

9. Troubleshooting and Resolving Common Problems

9.1 Startup-Related Problems

9.1.1 The host cannot power on

Possible causes: The power cord is not plugged in securely, the outlet has no power, a fuse has blown, or the main unit’s power supply has failed;

Troubleshooting: Check that the power cord is securely plugged into both the unit and the outlet; try using a different outlet. Check if the fuse has blown, and replace it with a fuse of the same specification. If the unit still does not turn on, contact the manufacturer for repair (do not disassemble the unit yourself).

9.1.2 Touchscreen Not Responding

Possible causes: Stains on the touchscreen surface, the device did not complete its self-test, or a touchscreen driver failure;

Troubleshooting: Wipe the touchscreen surface with a dry, soft cloth to remove any smudges; turn off the power, wait 1 minute, then turn it back on; wait until the self-test is complete before using the device; if it still does not respond, connect a mouse via USB to operate the device, and contact the manufacturer to update the software or have the touchscreen repaired.

9.2 Discharge-Related Faults

9.2.1 The high-voltage indicator light is not on

Possible cause: The device has not entered the discharge-ready state;

Instructions: After configuring the settings, click “Start” and wait for charging to complete.

9.2.2 Inaccurate Discharge Voltage

Possible causes: loose RC modules, expired voltage calibration, or aged high-voltage cables;

Solution: Tighten the cap on the RC module and check that the internal capacitors and resistors are securely connected; contact the manufacturer for professional calibration and to update the calibration parameters; check the high-voltage cables for signs of aging or damage.

9.3 Faults Related to Test Results

Fault Symptom: Excessive interference from the EUT (not a problem with the EUT itself)

Possible causes: Poor grounding, electromagnetic interference in the test environment, or the coupling plate not connected properly;

Troubleshooting: Re-inspect the grounding system to ensure that the main unit, discharge gun, and reference ground plate are securely grounded; turn off other high-power equipment and RF sources in the test environment to avoid electromagnetic interference; check that the 470 kΩ resistor connection between the coupling plate and the reference ground plate is secure, and replace any damaged resistors.