Jinko JK2511 DC Low Resistance Tester User Manual

1. Introduction

The Jinko JK2511 DC Low Resistance Tester is an intelligent instrument designed for precise measurement of low DC resistance. It offers a wide measurement range and high precision, making it suitable for various industrial applications. This tester is ideal for measuring the copper resistance of transformer and inductor windings, contact resistance of relays and switches, resistance of wire connectors, solder contact resistance of components, and resistance of PCB lines and vias. Its capabilities extend to metal detection and integration into production lines, where it can output good/bad product signals via HANDLER or optional GPIB interfaces to enhance automated testing.

2. Safety Information

Please read and understand all safety instructions before operating the JK2511 DC Low Resistance Tester. Failure to follow these instructions may result in injury or damage to the instrument.

• Always connect the instrument to a properly grounded power outlet.
• Do not operate the instrument in wet or damp conditions.
• Ensure all connections are secure before applying power.
• Avoid touching live circuits.
• Refer to qualified service personnel for any repairs or maintenance not covered in this manual.
• Disconnect power before cleaning or servicing the instrument.

3. Product Overview

3.1 Front Panel

Figure 1: Front view of the Jinko JK2511 DC Low Resistance Tester, showing the digital display, control buttons, and input terminals. The display shows "8.8.8.8.8" with units for mΩ, Ω, and kΩ. The left side has a red POWER button. The right side features navigation and function buttons labeled HIGH, PASS, LOW, HOLD, and SETUP.

3.2 Side View

Figure 2: Side view of the Jinko JK2511 DC Low Resistance Tester, illustrating the depth and general form factor of the device. This angle highlights the robust casing and ventilation slots on the side.

3.3 Rear View

Figure 3: Rear view of the Jinko JK2511 DC Low Resistance Tester, showing the ventilation grille and the overall construction from the back. This view typically includes power input and communication ports, though they are not clearly visible in this specific image.

4. Setup

1. Unpacking: Carefully remove the JK2511 tester from its packaging. Inspect for any signs of damage during transit. Retain the packaging for future storage or shipping.
2. Power Connection: Connect the provided power cord to the instrument's power input and then to a grounded AC power outlet. Ensure the voltage matches the instrument's requirements.
3. Probe Connection: Connect the test probes to the appropriate input terminals on the front panel. Typically, these are labeled SENSE+, SENSE-, DRIVE+, and DRIVE-. Ensure a secure connection for accurate measurements.
4. Initial Power On: Press the red POWER button on the front panel to turn on the instrument. The display should illuminate, indicating the device is operational.
5. Self-Test: The instrument may perform a brief self-test upon startup. Wait for this process to complete before proceeding with measurements.

5. Operating Instructions

5.1 Basic Measurement

1. Connect the DUT: Connect the Device Under Test (DUT) to the test probes. Ensure good contact between the probes and the measurement points on the DUT.
2. Select Measurement Range: The JK2511 typically auto-ranges. If manual range selection is available, use the appropriate buttons (e.g., SETUP or navigation keys) to select a range suitable for the expected resistance value.
3. Initiate Measurement: The instrument usually displays the resistance value continuously. For a stable reading, press the HOLD button to freeze the display.
4. Read the Display: Observe the resistance value shown on the digital display, along with the corresponding unit (mΩ, Ω, or kΩ).

5.2 Advanced Features (If Applicable)

• Limit Testing (HIGH/PASS/LOW): The instrument supports setting upper and lower resistance limits. Use the SETUP menu to configure these limits. The HIGH, PASS, and LOW indicators will illuminate to show if the measured resistance falls above, within, or below the set limits.
• Data Hold: Press the HOLD button to freeze the current measurement on the display. Press it again to release and resume continuous measurement.
• Zeroing Function: For highly accurate low resistance measurements, a zeroing function may be available to compensate for test lead resistance. Consult the full manual for specific instructions on performing a zero adjustment.
• Interface Communication: For automated testing, connect the instrument to a PC or PLC via the HANDLER interface or optional GPIB interface. Refer to the communication protocol documentation for programming details.

6. Maintenance

• Cleaning: Disconnect power before cleaning. Use a soft, dry cloth to wipe the exterior of the instrument. Do not use abrasive cleaners or solvents.
• Probe Care: Keep test probes clean and free from corrosion. Replace damaged probes immediately to ensure accurate measurements and safety.
• Storage: When not in use, store the instrument in a clean, dry environment, away from direct sunlight and extreme temperatures.
• Calibration: Regular calibration by qualified personnel is recommended to maintain measurement accuracy, especially for critical applications.

7. Troubleshooting

This section provides solutions to common issues. For problems not listed here, contact Jinko customer support.

• Instrument does not power on:
  • Check if the power cord is securely connected to both the instrument and the power outlet.
  • Verify that the power outlet is functional.
  • Check the instrument's fuse, if accessible and user-replaceable (refer to the full manual).
• Inaccurate or unstable readings:
  • Ensure test probes are making good, clean contact with the DUT.
  • Check for damaged or worn test leads.
  • Verify that the DUT is properly isolated and not influenced by external electrical noise.
  • Perform a zero adjustment if available.
  • Consider if the instrument requires calibration.
• Display shows "OVERLOAD" or "OL":
  • The measured resistance may be higher than the selected range. If auto-ranging, this indicates the resistance is beyond the instrument's maximum capability.
  • Check for open circuits in the DUT or test leads.

8. Specifications

Note: Full technical specifications, including measurement ranges, accuracy, and environmental conditions, are available in the complete product datasheet.

9. Warranty and Support

Jinko provides a standard warranty for the JK2511 DC Low Resistance Tester against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region. Please retain your proof of purchase for warranty claims.

For technical support, service, or warranty inquiries, please contact Jinko customer service through their official website or the contact information provided with your purchase.

• Online Support: Visit the official Jinko website for FAQs, software updates, and additional resources.
• Contact Information: Refer to the product packaging or Jinko's official website for the most current contact details.