AT3818

AT3818 Precision LCR Digital Bridge

CategoryBenchtop LCR Digital Bridge SeriesAT38XX Series

The AT3818 Precision LCR Digital Bridge is a fully iterated new-generation model, featuring a high-definition true-color TFT-LCD display module. It comes standard with a full Chinese graphical interface and supports one-click switching to English mode, accommodating global multi-language usage scenarios. The unit adopts a large-font high-brightness display design, making measurement readings clearly visible from a distance and significantly reducing manual reading errors.

The measurement frequency covers the full continuous range of 10Hz to 300kHz, with frequency setting resolution up to 0.001Hz, precisely matching the specific test frequency requirements of various components. Test signals support 0.01Vrms to 2.00Vrms voltage output and 100.0μA to 20.00mA current output. The built-in pure DC signal source enables accurate DCR DC resistance measurement of components. It includes a built-in ±2.5V DC bias function and supports external bias source expansion, meeting component testing requirements under high current and high voltage bias conditions.

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Parameter	AT3818
Basic Test Parameters
Measurement Parameters	Cs-Rs, Cs-D, Cp-Rp, Cp-D, Lp-Rp, Lp-Q, Ls-Rs, Ls-Q, R-X, Z-θrad, Z-θdeg, DCR
Basic Accuracy	0.05% ±5 digits
Test Frequency	10Hz to 300kHz (resolution 0.001Hz)
Test Range	Auto, Manual, and Nominal, 9 ranges
Test Speed	40/sec, 10/sec, 3/sec
Output Impedance	30Ω, 50Ω, and 100Ω
Signal Level	10.00mV to 2.00V AC\n100.0μA to 20.00mA AC
Monitor Parameters	Z, D, Q, θr, θd, R, X, G, B, Y, Vac, Iac, Δ, Δ%
Readings	All parameters full 6-digit: 999999
Display Range	L	0.00001μH to 9999.99H
C	0.00001pF to 9999.99mF
R, X, Z	0.00001Ω to 99.9999MΩ
D	0.00001 to 9.99999
Q	0.00001 to 99999.9
Δ%	-999999% to 999999%
θ(deg)	-179.999° to 179.999°
θ(rad)	-3.14159 to 3.14159
DCR	0.00001Ω to 99.9999MΩ
Equivalence & Bias
Equivalent Mode	Series and Parallel Equivalent
DC Bias	-2.5V to +2.5V (0.5% + 0.005V)
Measurement Functions
Average Count	1 to 256
Trigger Mode	Internal, Manual, External, and Remote
Trigger Delay	0.01ms to 60s
Comparator	14-bin sorting, 10 pass bins, 1 fail bin, 1 secondary parameter fail bin\nBin count function: up to 999999
List Sweep	10 steps (frequency, voltage, and current)
Comparison Mode	Sequential / Absolute Deviation / Relative Deviation
Calibration	Open-circuit zeroing, Short-circuit zeroing (sweep and point frequency)
File	Internal storage: 10 files\nExternal USB storage: 10 files
Data Logging	9999 groups (.csv)
Beeper Function	Off / Pass / Fail
Other Functions	Auto LCZ
General Parameters
Dimensions	Instrument Dimensions	264(W) × 107(H) × 350(D) mm
Package Dimensions	-
Weight	Net Weight	4 kg
Gross Weight	-
Power Requirements	Voltage: 90V to 260V, Frequency: 50Hz to 60Hz, Power: 30VA
Interface	RS-232C, Handler, Standard USB Disk Interface
Communication Protocol	SCPI / Modbus
Other	Auto LCZ, Keyboard lock, Stores 999 LCD screens, Trigger delay

Parameter

AT3818

Basic Test Parameters

Measurement Parameters

Cs-Rs, Cs-D, Cp-Rp, Cp-D, Lp-Rp, Lp-Q, Ls-Rs, Ls-Q, R-X, Z-θrad, Z-θdeg, DCR

Basic Accuracy

0.05% ±5 digits

Test Frequency

10Hz to 300kHz (resolution 0.001Hz)

Test Range

Auto, Manual, and Nominal, 9 ranges

Test Speed

40/sec, 10/sec, 3/sec

Output Impedance

30Ω, 50Ω, and 100Ω

Signal Level

10.00mV to 2.00V AC\n100.0μA to 20.00mA AC

Monitor Parameters

Z, D, Q, θr, θd, R, X, G, B, Y, Vac, Iac, Δ, Δ%

Readings

All parameters full 6-digit: 999999

Display Range

0.00001μH to 9999.99H

0.00001pF to 9999.99mF

R, X, Z

0.00001Ω to 99.9999MΩ

0.00001 to 9.99999

0.00001 to 99999.9

Δ%

-999999% to 999999%

θ(deg)

-179.999° to 179.999°

θ(rad)

-3.14159 to 3.14159

DCR

0.00001Ω to 99.9999MΩ

Equivalence & Bias

Equivalent Mode

Series and Parallel Equivalent

DC Bias

-2.5V to +2.5V (0.5% + 0.005V)

Measurement Functions

Average Count

1 to 256

Trigger Mode

Internal, Manual, External, and Remote

Trigger Delay

0.01ms to 60s

Comparator

14-bin sorting, 10 pass bins, 1 fail bin, 1 secondary parameter fail bin\nBin count function: up to 999999

List Sweep

10 steps (frequency, voltage, and current)

Comparison Mode

Sequential / Absolute Deviation / Relative Deviation

Calibration

Open-circuit zeroing, Short-circuit zeroing (sweep and point frequency)

File

Internal storage: 10 files\nExternal USB storage: 10 files

Data Logging

9999 groups (.csv)

Beeper Function

Off / Pass / Fail

Other Functions

Auto LCZ

General Parameters

Dimensions

Instrument Dimensions

264(W) × 107(H) × 350(D) mm

Package Dimensions

Weight

Net Weight

4 kg

Gross Weight

Power Requirements

Voltage: 90V to 260V, Frequency: 50Hz to 60Hz, Power: 30VA

Interface

RS-232C, Handler, Standard USB Disk Interface

Communication Protocol

SCPI / Modbus

Other

Auto LCZ, Keyboard lock, Stores 999 LCD screens, Trigger delay

Parameter	AT3818
Basic Test Parameters
Measurement Parameters	Cs-Rs, Cs-D, Cp-Rp, Cp-D, Lp-Rp, Lp-Q, Ls-Rs, Ls-Q, R-X, Z-θrad, Z-θdeg, DCR
Basic Accuracy	0.05% ±5 digits
Test Frequency	10Hz to 300kHz (resolution 0.001Hz)
Test Range	Auto, Manual, and Nominal, 9 ranges
Test Speed	40/sec, 10/sec, 3/sec
Output Impedance	30Ω, 50Ω, and 100Ω
Signal Level	10.00mV to 2.00V AC\n100.0μA to 20.00mA AC
Monitor Parameters	Z, D, Q, θr, θd, R, X, G, B, Y, Vac, Iac, Δ, Δ%
Readings	All parameters full 6-digit: 999999
Display Range	L	0.00001μH to 9999.99H
C	0.00001pF to 9999.99mF
R, X, Z	0.00001Ω to 99.9999MΩ
D	0.00001 to 9.99999
Q	0.00001 to 99999.9
Δ%	-999999% to 999999%
θ(deg)	-179.999° to 179.999°
θ(rad)	-3.14159 to 3.14159
DCR	0.00001Ω to 99.9999MΩ
Equivalence & Bias
Equivalent Mode	Series and Parallel Equivalent
DC Bias	-2.5V to +2.5V (0.5% + 0.005V)
Measurement Functions
Average Count	1 to 256
Trigger Mode	Internal, Manual, External, and Remote
Trigger Delay	0.01ms to 60s
Comparator	14-bin sorting, 10 pass bins, 1 fail bin, 1 secondary parameter fail bin\nBin count function: up to 999999
List Sweep	10 steps (frequency, voltage, and current)
Comparison Mode	Sequential / Absolute Deviation / Relative Deviation
Calibration	Open-circuit zeroing, Short-circuit zeroing (sweep and point frequency)
File	Internal storage: 10 files\nExternal USB storage: 10 files
Data Logging	9999 groups (.csv)
Beeper Function	Off / Pass / Fail
Other Functions	Auto LCZ
General Parameters
Dimensions	Instrument Dimensions	264(W) × 107(H) × 350(D) mm
Package Dimensions	-
Weight	Net Weight	4 kg
Gross Weight	-
Power Requirements	Voltage: 90V to 260V, Frequency: 50Hz to 60Hz, Power: 30VA
Interface	RS-232C, Handler, Standard USB Disk Interface
Communication Protocol	SCPI / Modbus
Other	Auto LCZ, Keyboard lock, Stores 999 LCD screens, Trigger delay

Parameter

AT3818

Basic Test Parameters

Measurement Parameters

Cs-Rs, Cs-D, Cp-Rp, Cp-D, Lp-Rp, Lp-Q, Ls-Rs, Ls-Q, R-X, Z-θrad, Z-θdeg, DCR

Basic Accuracy

0.05% ±5 digits

Test Frequency

10Hz to 300kHz (resolution 0.001Hz)

Test Range

Auto, Manual, and Nominal, 9 ranges

Test Speed

40/sec, 10/sec, 3/sec

Output Impedance

30Ω, 50Ω, and 100Ω

Signal Level

10.00mV to 2.00V AC\n100.0μA to 20.00mA AC

Monitor Parameters

Z, D, Q, θr, θd, R, X, G, B, Y, Vac, Iac, Δ, Δ%

Readings

All parameters full 6-digit: 999999

Display Range

0.00001μH to 9999.99H

0.00001pF to 9999.99mF

R, X, Z

0.00001Ω to 99.9999MΩ

0.00001 to 9.99999

0.00001 to 99999.9

Δ%

-999999% to 999999%

θ(deg)

-179.999° to 179.999°

θ(rad)

-3.14159 to 3.14159

DCR

0.00001Ω to 99.9999MΩ

Equivalence & Bias

Equivalent Mode

Series and Parallel Equivalent

DC Bias

-2.5V to +2.5V (0.5% + 0.005V)

Measurement Functions

Average Count

1 to 256

Trigger Mode

Internal, Manual, External, and Remote

Trigger Delay

0.01ms to 60s

Comparator

14-bin sorting, 10 pass bins, 1 fail bin, 1 secondary parameter fail bin\nBin count function: up to 999999

List Sweep

10 steps (frequency, voltage, and current)

Comparison Mode

Sequential / Absolute Deviation / Relative Deviation

Calibration

Open-circuit zeroing, Short-circuit zeroing (sweep and point frequency)

File

Internal storage: 10 files\nExternal USB storage: 10 files

Data Logging

9999 groups (.csv)

Beeper Function

Off / Pass / Fail

Other Functions

Auto LCZ

General Parameters

Dimensions

Instrument Dimensions

264(W) × 107(H) × 350(D) mm

Package Dimensions

Weight

Net Weight

4 kg

Gross Weight

Power Requirements

Voltage: 90V to 260V, Frequency: 50Hz to 60Hz, Power: 30VA

Interface

RS-232C, Handler, Standard USB Disk Interface

Communication Protocol

SCPI / Modbus

Other

Auto LCZ, Keyboard lock, Stores 999 LCD screens, Trigger delay

AT3818 Precision LCR Digital Bridge

AT3818 Precision LCR Digital Bridge

Specifications

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Specifications

Related Attachments

ATL501E Kelvin Test Clip

ATL103 Communication Cable

ATL508A SMD Test Tweezers

ATL600 Shorting Bar

ATL601 Fixture

ATL108A Communication Cable

Related Documents

AT3818用户手册 RevA1-16k

Related Software

Related Videos

Same Series Products

AT3810A LCR Digital Bridge

AT3817A LCR Digital Bridge

AT3816A LCR Digital Bridge

AT3816B LCR Digital Bridge