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Keyword 1:
Component Tester
Keyword 2:
Frequecny 1M-10MHz, LCR
Keyword 3:
Precision Type

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Precision LCR Meter
Frequency 20Hz-2MHz.
Basic Accuracy: 0.05%
Auto Balance Bridge Technology
AC Signal: 5mV-20V
DC Bias: 0+/-40V, 0+/-100mA
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Product description


■ High accuracy:Adopt Auto-balance bridge technology, 4-terminal pair

■ High stability and consistency:Up to 15 ranges

■ High speed:Up to 5.6ms

■ High resolution:7- inch, 800×600

■ High power:

 Signal source:Voltage up to 20Vrms(only TH2838H)

 Current up to 100mA(only TH2838H)

 DC bias:Voltage up to±40V(only TH2838H)

 Current up to 100mA

 Up to 120A when controlling 6 sets of TH1778 series DC

 Bias Current Source by external DC Bias interface 

 Independent Voltage Source: ±10V programmable output

 (only TH2838H)

■ 201 Points List Sweep Function

■ Multi-parameter Graphic Sweep Function

■ Arithmetical operation

■ 10 bins sorting, sorting result with sound and light alarm

■ Huge storage space: 

 Internal: 100 groups of setting files, 10 groups of gif image files

 External: 100 groups of setting files through USB storage


 (Optional), SCANER(Optional), external DC BIAS control interface 

■ High compatibility: Support SCPI commands, compatible with

 KEYSIGHT E4980A, E4980AL, HP4284A etc.


Brief Introduction

■ TH2838/TH2838H/TH2838A is a new generation impedance tester adopting the most advanced auto balance bridge theory in the world at present. With its 0.05% basic accuracy, speed up to 5.6ms, 20Hz-2MHz frequency range and impedance test range up to 1GΩ, this new impedance tester can meet all test demands of components and materials, especially for testing capacitor with low D and inductor with high Q. Four-terminal pair configuration can eliminate the effect of electromagnetic coupling in test cable, to extend the low limit of low impedance test 10 times than those testers with Five-pair configuration.

TH2838/TH2838H/TH2838A supports 20V AC test signal and 40V DC Bias, new-added improved multi parameter list sweep/graphic analyze will help customers to extend the comprehensive evaluation ability on components.

TH2838/TH2838H/TH2838A is a strong tool for the design, examination, quality control and production test of electronic components. Its excellent performances and functions provide a powerful tool for circuit design and development, as well as material (electronic material and non-electronic material) research and development. 

TH2838/TH2838H/TH2838A can realize various tests of commercial standards and military standards, such as IEC and MIL.



Brief Introduction

■ Application

1.Passive component

Impedance parameter estimation and performance analysis of capacitor, inductor,  magnetic core, resistor, piezoelectric devices, transformers, chip components  and network components

2.Semiconductor component

Parasitic parameter test and analysis of LED driver integrated circuit C-VDC  features of varactors Parasitic parameter analysis of transistors or integrated  circuit

3.Other components

Impedance assessment of printed circuit boards, relays, switches, cables, batteries

4.Dielectric material

Dielectric constant and loss angle evaluation of plastics,  ceramics and other materials 

5.Magnetic materials

Magnetic permeability and loss angle assessment of ferrite,  amorphous body and other magnetic materials

6.Semiconductor materials

Dielectric constant, electric conductivity and C-V characteristics  of semiconductor materials Liquid crystal cell of dielectric  constant, elastic constant and C-V characteristics of liquid  crystal cell



Model TH2838H
Test Signal Source
Output impedance 100Ω, ±1% @1kHz
Frequency Range 20Hz-2MHz
Resolution 20.0000Hz - 99.9999Hz 0.1mHz
100.000Hz - 999.999Hz 1mHz
1.00000kHz - 9.99999kHz 10mHz
10.0000kHz - 99.9999kHz 0.1Hz
100.000kHz - 999.999kHz 1Hz
1.00000MHz - 2.00000MHz 10Hz
AC test signal

Rated value(ALC OFF):Set the voltage as the Hcur voltage when the test terminal is open. Set the current as the Hcur current when the test terminal is short.

Constant value(ALC ON):Keep the voltage in DUT is the same as the set value. Keep the current in DUT is the same as the set value.

AC signal Voltage range 5mVrms -- 2Vrms
Resolution 5mVrms -- 0.2Vrms 100μVrms
0.2Vrms -- 0.5Vrms 200μVrms
0.5Vrms -- 1Vrms 500μVrms
1Vrms -- 2Vrms 1mVrms
2Vrms -- 5Vrms 2mVrms
5Vrms -- 10Vrms 5mVrms
10Vrms -- 20Vrms 10mVrms
Current range 50μArms -- 20mArms
Resolution 50μArms -- 2mArms 1 μArms
2mArms -- 5mArms 2 μArms
5mArms -- 10mArms 5 μArms
10mArms -- 20mArms 10μArms
20mArms -- 50mArms 20μArms
50mArms--100mArms 50μArms
Rdc test Voltage range 100mV — 2V
Resolution 100μV
Current range 0mA— 20mA
Resolution 1μA
DC Bias Voltage range 0V — ± 10V
Resolution 0V -- 5V 100μV
5V -- 10V 1mV
10V -- 20V 2mV
20V -- 40V 5mV
Current range 0mA— ± 100mA
Resolution 0 A -- 50mA 1μA
50mA -- 100mA 10μA
Size/Type 7-inch (diagonal)TFT LCD display
Proportion 16:9
Resolution 800×RGB×480
Test function
Test parameter Cp-D,Cp-Q,Cp-G,Cp-RpCs-D,Cs-Q,Cs-RsLp-D, Lp-Q, Lp-G, Lp-Rp, Lp-RdcLs-D, Ls-Q, Ls-Rs, Ls-Rdc, RdcR-X, Z-θd, Z-θrG-B, Y-θd, Y-θrVdc-Idc
Mathematics function A(X+B)+C, X is test parameter, A, B,C is input parameter
Equivalent circuit Series, parallel
Deviation measurement Absolute deviation Δ compared with the nominal valuePercentage deviation Δ% compared with the nominal value
Calibration function OPEN, SHORT, LOAD
Range selection AUTO, HOLD
Range LCR 100mΩ, 1Ω, 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ, total 15 ranges
Rdc 1Ω, 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ, total 15 ranges
Trigger mode INT, MAN, EXT, BUS
Trigger delay 0 s -- 999 s, resolution 100us
Test terminal configuration Four-pair
Test cable length 0m, 1m
Test average 1-255 times
Test time(ms) Speed mode 20Hz 100Hz 1kHz 10kHz 100kHz 1MHz 2MHz
FAST 330 100 20 7.7 5.7 5.6 5.6
MED 380 180 110 92 89 88 88
LONG 480 300 240 230 220 220 220
Test display range a 1×10-18 ; E 1×1018
Cs, Cp ±1.000000 aF -- 999.9999 EF
Ls,Lp ±1.000000 aH -- 999.9999 EH
D ±0.000001 -- 9.999999
Q ±0.01 -- 99999.99
R, Rs, Rp, X, Z, Rdc ±1.000000 aΩ -- 999.9999 EΩ
G,B,Y ±1. 000000 aS -- 999.9999 ES
Vdc ±1.000000 aV -- 999.9999 EV
Idc ±1.000000 aA -- 999.9999 EA
θ r ±1.000000 a rad -- 3.141593 rad
θ d ±0.0001 deg -- 180.0000 deg
Δ% ±0.0001% -- 999.9999%
t -99.99°C -- 1000.00°C
Turn Ratio (extension pending) ±0.000000 -- 1000.000
Basic test accuracy 0.05% (the details refer to the instruction)
List sweep
Sweep points Up to 201 points
Sweep Parameters Test frequency, AC voltage, AC current, DC BIAS voltage, DC BIAS current
Trigger mode SEQ Once triggered, test at the sweep points. /EOM/INDEX will be output one time.
STEP Once triggered, test at one sweep point. /EOM/INDEX will be output at each point, but the list sweep comparator results only be output at the last /EOM.



Accessories name Model  
Four-end clamp with card TH26005C
Short circuit TH26010 z
Kelvin test lead with box four-terminal insulation and lock TH26011BS z


Accessories name Model  
Box patch test cable TH26009B z
Magnetic ring fixture TH26008A z
Dielectric test fixture TH26077 z


lcr meter
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