Bridge Tweezers QPLCR

2. Version differentiation instructions

1.      Agreed name:

First car = first version = 2S version

Second car = second version = 3S version

2. Corresponding version of 2S version PCB :    

(All plate thickness 1.0 )

Measuring board 2S        display board 2S      camera leg 2S

3. Corresponding version of 3S version PCB :

(All plate thickness 1.0 )

Measuring board 3S         display board 3S      stand leg 2S

4.Corresponding      firmware version:

3.Safety   instructions

1.   Do not use it in flammable and explosive environments, and avoid use in dusty, direct sunlight, or high radiation environments.

2.   Non-professional maintenance personnel are welcome to open the back cover. When maintenance, component replacement and instrument calibration are required, non-professionals should perform the work or contact relevant dealers and company after-sales service.

3.    Do not disassemble or modify the instrument at will. Authorized modifications may cause permanent damage to the instrument.

4.   For measurement of circuit components, please measure that the power supply to the circuit has been cut off and all capacitors on the circuit have been discharged.

5.   It is strictly forbidden to input voltage at the measurement port. Live components such as capacitors must be discharged before measurement.

6. The instrument is powered by a built-in buried battery, which can be charged with a machine charger or a computer USB port. It can be turned on and measured while charging.

4.   Environmental conditions

1. Altitude＜2000 meters

2. Storage humidity ≤ 75% RH

3.   Working environment 0℃~ 40 ℃

4.Storage    environment- 20 ℃ ~+ 50 ℃

*Firmware Description* 

3S version:
  v2.0.1:(LcrMeter071_v2.0.1.hex) 2022-1-28
        1. Initial release.
    v2.0.2:(LcrMeter071_v2.0.2.hex) 2022-2-9
        1. Solve the problem of noise at startup.
        2. Occasionally jump to resistance when optimizing open circuit.
        3. Added the function of long pressing the up button to rotate the screen.
    v2.0.3:(QPLCR_3S071_v203.hex) 2022-2-16
        1. Fixed the bug that the 47K resistance cannot be measured.
        2. Fixed the issue where inductance is displayed in the first few seconds when testing resistance.
        3. Add version number display. Long press the key in the lower right corner.
        4. The color of QPLCR changes with the battery power.
    v2.0.4:(QPLCR_3S071_v204.hex) 2022-2-22
        1. Added self-calibration function.
    v2.0.5:(QPLCR_3S071_v205.hex) 2022-3-1
        1. Repair: 2M resistance measurement error problem
        2. Optimization: The power display speed is accelerated after booting
        3. Optimization: There is a small problem of 'power off' afterimage when booting
        4. Added: USB host computer display function.
        5. Added: Restore factory settings function.
    v2.0.6:(QPLCR_3S071_v206.hex) 2022-3-9 (Configuration options have undergone major changes and will automatically restore to factory settings)
        1. Modification: The host computer is not started by default. Press and hold the up and down keys to start it.
        2. Added: Manually select the measurement type
        3. Add: On-off measurement function, the detection resistance value is modified by the host computer, the measurement speed has not been optimized yet
        4. Modification: The minimum unit of capacitance is changed to pF