Tonghui TH2821A Manual de usuario

OPERATION MANUAL

English

November 2005

1st Edition Rev 1.0.0

TH2821A

Portable LCR Meter

TH2821A 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 ........................................9

1.4 Environment Requirements...................12

Chapter 2 Panel Illustration..............................13

2.1 LCD Display Illustration.........................13

2.2 Keyboard Illustration............................15

Chapter 3 Operation.........................................17

3.1 Power on .............................................17

3.2 How to operate....................................18

3.2.1 First Key Functions .....................18

3.2.2 Second Key Functions: ................20

3.3 Battery recharge..................................30

3.4 Clearing Instruction..............................31

Appendix .........................................................32

TH2821A OPERATION MANUAL

How to Contact Us

Changzhou Tonghui Electronic Co., Ltd.

Address: No. 3, Tianshan Road, New District,

Changzhou, Jiangsu, China

Tel: 0086-519-5132222, 5113342, 5109592

Fax:0086-519-5109972

http://www.tonghui.com.cn

http://www.tonghui.cn

Email: [email protected]

TH2821A 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.

Accessories

TH26028 DC Power Adapter 1

TH26027 4 terminal Kelvin test clip leads 1

LH-200H7C rechargeable battery (inside) 1

User Manual 1

Options

TH26029 SMD component test fixture

TH2821A OPERATION MANUAL

Notes on Use

zThis meter is only for indoor use.

zTurn off the TH2821A while switching the power supply

between battery and DC adapter or replacing the

battery.

zAlthough internal circuit protection is provided, DC

voltage or current may damage TH2821A. Before you

measure a capacitor, be sure the capacitor is fully

discharged.

zCharging may disturb measurement result sometimes.

zNickel Metal Hydride rechargeable battery can be used

for the power supply. TH2821A will not work normally

when battery voltage is less than 6V.

zThe 12V AC to DC adaptor is recommended to be used

for TH2821A power supply.

zPerform Open and Short corrections for accurate

measurement especially when test fixture is changed.

zThe functions locked with password are not accessible

by users.

TH2821A 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. For warranty service

or repair, this product must be returned to a service facility

designated by our company.

Warranty limitation

The foregoing warranty shall not apply to defects resulting

from improper or inadequate maintenance by Buyer,

Buyer-supplied software or interfacing, unauthorized

modification or misuse, or improper site preparation or

maintenance.

Chapter 1 Overview

Thank you for purchasing our product. To get the maximum

performance from the instrument, please read this manual

first, and keep this manual at hand.

1.1 Introduction

TH2821A is a microprocessor-controlled portable meter with

low power consumption. It can measure six basic parameters,

they are inductance L, capacitance C, resistance R,

impedance |Z|, dissipation factor D and quality factor Q.

TH2821A can fulfill the measurement needs of various

component manufacturers and maintenance technicians.

1.2 Main Functions

1．Test Parameter

L-Q, C-D, R-Q and Z-Q.

2．Correction

OPEN: multi-frequency correction of open circuit;

SHORT: multi-frequency correction of short circuit.

3．Display Mode

Direct —— direct measurement value;

∆—— absolute deviation;

∆% —— percent deviation.

4．Range Hold

When measuring a large number of components with

the same nominal value, this function can effectively

improve the measuring rate.

TH2821A OPERATION MANUAL

5．Comparator Function

Built-in 4 Bins comparator: NG, P1, P2 and P3.

6．Equivalent Circuit Mode

Both parallel and series equivalent circuit modes can

be obtained.

7．Data Hold

This function can be used to freeze the current display

value.

8．Alarm Mode

NG, P1, P2, P3 and OFF modes can be selected.

TH2821A OPERATION MANUAL

1.3 Specifications

Parameter L-Q, C-D, R-Q and Z-Q

Frequency 100 Hz, 120 Hz , 1 kHz and 10 kHz

Accuracy Basic Accuracy: 0.3%

Display 5digits display for both primary and secondary

parameters

100 Hz,120 Hz 1 µH – 9999 H

L 1 kHz,10 kHz 0.1 µH – 999.9 H

100 Hz, 120Hz 1 pF – 9999 µF

C 1kHz,10 kHz 0.1 pF – 999.9 µF

R, |Z| 0.0001 Ω- 999.9 MΩ

D, Q 0.0001 – 9999

Measurement

Range

∆% 0.0001% - 9999%

10kHz 0.1 Vrms (1±15%)

120Hz

1kHz 0.3 Vrms (1±15%)

Test Level

(Range Auto

and Open

Circuit) 100Hz 0.42 Vrms (1±15%)

Ranging Mode Auto and Hold

Equivalent

Circuit Parallel and Series

Display Direct, ∆ABS and ∆%

Correction Open and Short Zeroing

Rate Approx. 3 meas/sec

Terminals 5 terminals

TH2821A OPERATION MANUAL

(Continued)

Comparator 4 Bins：NG, P1, P2 and P3

∆% -9999% - 99999%

L 0.0001 µH – 99999 H

C 0.0001 pF – 99999 µF

R 0.0001 Ω- 99999 MΩ

Limit Setup

Range

Nominal

Z 0.0001 Ω- 99999 MΩ

Alarm Mode NG, P1, P2, P3 and OFF

Power Supply 9V rechargeable battery or DC12V(100 mA)

adapter

Low Battery

Indication Approx. 6V

Power

Consumption Normal: Approx. 25 mA

Auto power-off: Approx. 500 nA

Auto Power

Off time Approx. 5 minutes

Weight Approx. 400 g

Dimensions 200mm(L) × 95mm(W) × 40mm(D)

Table 1-1 Specifications

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