Engineers engaged in electronic development often need to measure inductance and capacitance. Inductance and capacitance meters sold on the market are expensive and have large errors in measuring small inductances and small capacitances. This meter is based on the LC resonance principle and adds high-speed microcontroller precision measurement By calculation, it can measure inductances below 1uH and small capacitances less than 1pF. This is also a major feature of this instrument, which is especially suitable for microwave production and measurement of switching power supply transformer and filter inductances.
1. C file...... Capacitance (0.01pF-10uF)
2. L file…….. Inductance (0.001uH-100mH)
3. HL file......Large inductance (0.001mH-100H)
4. HC file...Large capacitor file (1uF-100mF)
All gears are automatic range, which is very convenient to use. In this way, LC100-A can replace any inductance and capacitance test instrument on the market in terms of measurement range and measurement precision. Its performance parameters are close to the digital bridge, and it is a cost-effective instrument.
USE:
1. Connect the computer USB as a power supply and switch tester.
2. According to the selection of the mode of the element to be measured, choose to measure inductance LX, capacitance CX, inductance or capacitance, HC HL, in the open state of the measuring terminal, you can see from the screen:
Inductance measurement 0.000uh LX:
Capacitance display: measure CX 0.00pf
The result shows: HL 0.000mh measured by large inductance
The measurement of large capacitance shows: HL 0.00uf
3. Due to the different measurement principles for HC files, first, the following three operation modes of LX, CX and HL are explained:
In the three modes, the requirements for zero point adjustment are measured. According to different methods of inductance and capacitance.
When the terminal is in CX mode, press the "Reset" button, the screen displays "Settings...OK" after launching, the screen displays "Timeline" 0.00pf; in HL and LX modes, when the terminal is short-circuited, press the "Reset" button, After the screen displays "Settings...Okay", the screen should display "0.000mh" and "0.000uh", and the open end displayed "out of range!". Then, you can connect the inductance to the tester for testing.
In the measurement result display, pressing the function key is all black, and the current of the test frequency will be displayed.
4. In the HC file, please make sure that the capacitor is completely discharged for measurement, then the red test fixture capacitor negative electrode, the black test clamp capacitor anode, you can read the test results of the display screen, note that the large-capacity measurement (over 10mf), the test time Can exceed 1 second, the longer the test time is for 100mf capacitors, the result is about 7-8 seconds ago.
Precautions:
1. When measuring electrolytic capacitors in HC mode, please note that the polarity is negative, red and black.
2. If the measurement is showing 0, it is sometimes necessary to adjust the zero. This may be a negative deviation, but it does not show negative.
3. It is strictly forbidden to press the reset button when testing the end element, this operation will lead to wrong results.
4. It is strictly forbidden to discharge untested capacitors, otherwise it may cause damage to the meter.
5. Use the 5V adapter module power supply, make sure the polarity is negative, otherwise the module will be damaged.
Warm reminder: Because the components themselves will have errors, the error is normal within 20%, so the above accuracy is in an ideal state, for reference only, please purchase with caution if you require high accuracy
Use skills and precautions:
1. Before measuring the inductance, first clear the short-circuit test clip to ensure the accuracy of the measurement;
2. Before measuring capacitance, clear the open-circuit test clip first to ensure accurate measurement;
3. When measuring the patch capacitance, you can clamp a piece of paper equivalent to the size of the capacitance in the patch test clip, and then reset it to zero, the result is more accurate;
4. When measuring electrolytic capacitors, please measure after discharging;
5. Do not use a longer test line when measuring. The shorter the test line, the smaller the interference and the higher the accuracy;
Frequently Asked Questions:
Question 1: How to calibrate this watch?
Answer: The test clip is disconnected, press and hold the red button, the LCD screen displays <DATA SAVE>, release the button at this time, and the calibration is successful.
Note: There should be no interference near the test clamp during calibration!
Question 2: Is the test clip in the instrument accessories a patch test clip?
Answer: The standard test clip of this meter is a pair of red and black alligator clips.
Question 3: Can the inductance of the transformer type be tested?
Answer: For inductors whose resistance exceeds 100Ω, our meter cannot be measured.
Question 4: How can I check the test frequency, can it be set?
Answer: The test frequency can be viewed by pressing the FUNC key during the test. It is automatically assigned by the MCU of the instrument, and it is not possible to set the test frequency by yourself.
Package includes:
1 x Digital Inductance Capacitance Meter
