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Summary of Contents for Tonghui TH2821B
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Page 1: Contents
TH2821B Portable LCR Meter OPERATION MANUAL English February 2006... -
Page 2: Table Of Contents
TH2821B OPERATION MANUAL Contents Contents ............2 How to Contact Us........3 Incoming Inspection........4 Notes on Use..........5 Warranty: ........... 6 Chapter 1 Overview ........... 7 1.1 Introduction .......... 7 1.2 Main Functions ........7 1.3 Specifications........8 1.4 Environment Requirements ....10 Chapter 2 Panel Illustration ...... -
Page 3: Incoming Inspection
TH2821B OPERATION MANUAL Incoming Inspection Inspect the shipping container for damage. The contents of the shipment should be listed as follows. If the contents are incomplete, if there is damage or defect, please contact our company or your nearest Sales and Service Office. -
Page 4: Notes On Use
TH2821B OPERATION MANUAL Notes on Use This meter is only for indoor use. Turn off the TH2821B while switching the power supply between battery and DC adapter or replacing the battery. Although internal circuit protection is provided, DC voltage or current may damage TH2821B. Before you measure a capacitor, be sure the capacitor is fully discharged. -
Page 5: Warranty
TH2821B OPERATION MANUAL Warranty: This instrument product is warranted against defects in material and workmanship for a period of two years from the date of shipment. During the warranty period, Our company will, at its option, either repair or replace products which prove to be defective. -
Page 6: Chapter 1 Overview
It can measure six basic parameters, they are inductance L, capacitance C, resistance R, impedance |Z|, dissipation factor D and quality factor Q. TH2821B can fulfill the measurement needs of various component manufacturers and maintenance technicians. 1.2 Main Functions 1．... -
Page 7: Specifications
TH2821B OPERATION MANUAL be obtained. 6． Data Hold This function can be used to freeze the current display value. 1.3 Specifications Parameter L-Q, C-D, R-Q and Z-Q Frequency 100 Hz, 120 Hz and 1 kHz Basic Accuracy: 0.3% Accuracy 5 digits display for both primary and secondary... - Page 8 TH2821B OPERATION MANUAL (Continued) Correction Open and Short Zeroing Rate Approx. 3 meas/sec Terminals 5 terminals Power Supply 1604 9V battery or DC12V(100 mA) adapter Low Battery Approx. 6V Indication Power Normal: Approx. 30 mA Consumption Auto power-off: Approx. 500 nA Auto Power Approx.
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Page 9: Environment Requirements
<1 μ × 1.4 Environment Requirements 1． Please do not operate TH2821B under the following environment conditions, as any of them will directly affect measuring precision or damage the meter: Please do not operate the instrument in places where is dusty, vibrant, under direct sunlight, or where there is corrosive air. -
Page 10: Chapter 2 Panel Illustration
TH2821B OPERATION MANUAL Chapter 2 Panel Illustration 2.1 LCD Display Illustration Figure 2-1 LCD Display... - Page 11 TH2821B OPERATION MANUAL Description Description Battery Power Unit Indicator Indicator Remote Ranging Mode Indicator Indicator Beeper Primary Parameter Indicator Display Series/Parallel Frequency Indicator Indicator Comparator Primary Parameter Indicator Indicator Secondary Parameter Function Indicator Indicator Secondary DC Adaptor Power Supply Parameter...
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Page 12: Keyboard Illustration
TH2821B OPERATION MANUAL 2.2 Keyboard Illustration Figure 2-2 Keyboard Function ○ POWER Power On/Off ○ PARA Parameter Selection ○ FREQ Frequency Selection ○ CLEAR CLEAR Selection ○ RANGE Range Selection ○ AUTO Range Auto Selection ○ Data Hold Series/Parallel ○... -
Page 13: Chapter 3 Operation
TH2821B OPERATION MANUAL Chapter 3 Operation 3.1 Power on 1. Press POWER key to turn on TH2821B. 2. The operation system version will be displayed. 3. At last the instrument enters the measurement state. Figure 4-1 Measurement Display Measurement display description: 1. -
Page 14: How To Operate
TH2821B OPERATION MANUAL 3.2 How to operate 3.2.1 Key Functions 1. Parameter Setup： Press PARA key to select the following measurement parameter combinations：L-Q, C-D, R-Q and Z-Q. Units Description: μH μF R/|Z| Ω kΩ MΩ Table 4-1 Units |Z| is the absolute value of impedance. Measurement value of L, C or R may be positive or negative. - Page 15 TH2821B OPERATION MANUAL 3. Range Setup: RANGE and AUTO keys are used to set the measurement range. AUTO key toggles ranging mode between “Auto” and “Hold”. RANGE keys are used to increase or decrease the measurement range, if the current ranging mode is “Auto”, then the ranging mode is changed to “Hold”...
- Page 16 TH2821B OPERATION MANUAL Note： How to calculate the measurement range Example: Assume capacitance C=210pF, dissipation D=0.0010 and test frequency f=1 kHz. Solution: π ≈ ≈ Ω π × × × × − 1416 1000 From the Table 4-2, we can get the correct measurement range is No.
- Page 17 TH2821B OPERATION MANUAL (Quit) will be displayed in the secondary parameter display area. Note： OpeN (OPEN), Short (Short) and Quit (Quit) are selected and displayed automatically by the meter according to the impedance value of the device under test. Press any key to cancel the correction operation and return to the measurement state.
- Page 18 TH2821B OPERATION MANUAL reliably and perform the short correction again. 4． Th2821B measures the correction data at all frequency points and all measurement ranges. The correction data is stored in the non-volatile memory. So you don’t have to perform the correction again, if the test conditions are not changed.
- Page 19 TH2821B OPERATION MANUAL Capacitance Cs：from series to parallel Circuit Mode： Dissipation: π Parallel: Inductance Lp：from parallel to series Circuit Mode： π Dissipation: Series: Inductance Ls：from series to parallel Circuit Mode： Dissipation： π Parallel: Here parameter with subscript s means the series mode,...
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Page 20: Battery Replacement
TH2821B OPERATION MANUAL From the above equations, we can conclude that the conversion （Q=1/D）. between series and parallel is determined by D or Q The value of D or Q directly determined the parameter values in different circuit mode. Example: Three capacitors have the same series capacitance: Cs=0.1μF, but... -
Page 21: Clearing Instruction
TH2821B OPERATION MANUAL used. Alkaline battery is recommended. If the instrument is not in use for more than three months, if the external DC adapter is always be used, please take out the battery. Close the bottom cover. The degraded battery must be disposed of properly. -
Page 22: Appendix
TH2821B OPERATION MANUAL Appendix Message Code Table： Clear: Correction clea Open: Open correction OpeN Short: Short correction shor — High limit of P1 Bin P1_: Low limit of P1 Bin No-Good Low limit of quality factor High limit of dissipation factor...
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