Programmable DC Electronic Loads

Overview

The ET4400 and ET4500 series LCR meters are component parameter analysers designed on the automatic balance bridge principle. With a 10 Hz – 100 kHz test bandwidth, continuously adjustable frequency, 0.1 % basic measurement accuracy and a binning function, they provide accurate, complete measurement and analysis for most components and materials — widely used in product R&D, incoming component inspection and in-line production sorting.

Features

• Measurement frequency up to 100 kHz, continuously adjustable in 1 Hz steps
• Test level 10 mV – 2000 mV, continuously adjustable in 1 mV steps
• Basic measurement accuracy 0.1 %
• Automatic component identification and measurement
• DC resistance (DCR) measurement function
• Electrolytic capacitor measurement mode
• Internal bias voltage output 0 mV – 1500 mV
• Data recording function (maximum, minimum, average)
• Automatic or locked measuring range
• Open-circuit and short-circuit calibration
• Comparator binning (5 bins) with alarm function
• 7-point list scan function
• 3.5-inch TFT LCD, 5-digit display
• Interfaces USB Device, RS232 and Handler; SCPI protocol supported
• System settings: Chinese or English language, buzzer and screen brightness configurable

Specifications

Item	ET4401	ET4402	ET4410	ET4501	ET4502	ET4510
Test frequency range	Up to 10 kHz	Up to 20 kHz	Up to 100 kHz	10 Hz – 10 kHz	10 Hz – 20 kHz	10 Hz – 100 kHz
Test frequency points	10 fixed points (100, 120, 200, 400, 800 Hz, 1, 2, 4, 8, 10 kHz)	12 fixed points (100, 120, 200, 400, 800 Hz, 1, 2, 4, 8, 10, 15, 20 kHz)	16 fixed points (100, 120, 200, 400, 800 Hz, 1, 2, 4, 8, 10, 15, 20, 40, 50, 80, 100 kHz)	User-defined frequency, continuously adjustable in 1 Hz steps
Basic accuracy	0.1 %
Display digits	Main parameter 5 digits · secondary parameter 5 digits
Measurement parameters	Main: L / C / R / Z · secondary: X / D / Q / θ / ESR
Measurement display range	L: 0 µH – 9999 H · C: 0 pF – 99.999 mF · R: 0 Ω – 99.99 MΩ
Measurement display speed	2/s (slow) · 5/s (medium) · 10/s (fast)
Internal bias	0 – 1500 mV, adjustable in 1 mV steps
Test level	6 fixed levels (0.1 V, 0.3 V, 0.6 V, 1 V, 1.5 V, 2 V)			10 mV – 2000 mV, continuously adjustable in 1 mV steps
Signal source output impedance	30 Ω, 100 Ω
Calibration	Open-circuit calibration, short-circuit calibration
Screening (tolerance) function	−100 % to +100 %, with fixed points at ±10 %, ±25 %, ±50 %
Comparator binning	5 bins — 3 pass bins, 1 fail bin, 1 AUX bin
Display	3.5-inch TFT LCD
Dedicated test functions	DC resistance (DCR) measurement, electrolytic capacitor measurement
Standard interfaces	RS232, USB Device, Handler

Accessories

• Standard: three-core power cord (30A51) ×1, four-terminal Kelvin test cable (35A51) ×1 pair, dedicated fuses ×2, paper manual ×1, certificate of conformity ×1

Downloads

Overview

The ET430 series handheld LCR meter combines a 2.8-inch TFT display, flexible key operation and full-speed USB communication in one compact unit, powered by a large-capacity lithium battery for long working hours. Beyond a full set of measurement parameters, it offers deviation measurement and sorting, with continuously adjustable output frequency; basic accuracy is 0.2 % or 0.3 % depending on model.

Features

• Measurement frequency up to 100 kHz, continuously adjustable in 1 Hz steps
• Basic accuracy 0.2 % (ET431 / ET432 / ET433) or 0.3 % (ET430B / ET430)
• Open-circuit and short-circuit calibration
• DC resistance (DCR) measurement (ET431 and above)
• Electrolytic capacitor measurement mode (ET430 and above)
• Internal bias voltage output 0 – 1000 mV
• Automatic component identification and measurement once the component is connected
• Sorting and deviation measurement supported
• 2.8-inch TFT display, 4½-digit display
• USB Type-C communication interface, SCPI protocol supported
• Large-capacity lithium battery power supply
• Adjustable measurement speed; manual and automatic range
• System settings: Chinese or English language, buzzer and screen brightness configurable

Specifications

Item	ET430B	ET430	ET431	ET432	ET433
Frequency range (max)	10 kHz	100 kHz	10 kHz	100 kHz	10 Hz – 100 kHz
Test frequency points	4 fixed points (100 Hz, 120 Hz, 1 kHz, 10 kHz)	6 fixed points (100 Hz, 120 Hz, 1 kHz, 10 kHz, 40 kHz, 100 kHz)	4 fixed points (100 Hz, 120 Hz, 1 kHz, 10 kHz)	6 fixed points (100 Hz, 120 Hz, 1 kHz, 10 kHz, 40 kHz, 100 kHz)	User-defined, continuously adjustable in 1 Hz steps
Basic accuracy	0.3 %	0.3 %	0.2 %	0.2 %	0.2 %
Display	2.8-inch TFT LCD
Display digits	Main parameter 5 digits · secondary parameter 5 digits
Measurement parameters	Main: L / C / R / Z · secondary: X / D / Q / θ / ESR
Electrolytic capacitor mode	No	Yes	Yes	Yes	Yes
DCR mode	No	No	Yes	Yes	Yes
Measurement display range	L: 0 µH – 2000 H · C: 0 pF – 20.000 mF · R: 0 Ω – 20.000 MΩ
Measurement display speed	Slow, medium, fast
Internal bias	None	0.1 V, 0.3 V, 0.6 V	0 mV – 1000 mV adjustable, 1 mV steps
Test level	0.6 V, 1 V	0.3 V, 0.6 V, 1 V	0.1 V, 0.3 V, 0.6 V, 1 V		10 mV – 1100 mV, adjustable in 1 mV steps
Calibration	Open-circuit calibration, short-circuit calibration
Screening function	Limit range settable 1 % – 50 %, fixed points at 1 %, 5 %, 10 %, 20 %
Deviation measurement	Percentage deviation between the measured component and the set nominal value is calculated and displayed
Other	Adjustable backlight brightness, settable auto power-off time, Chinese / English selectable				USB Type-C communication, built-in large-capacity lithium battery

Accessories

• Standard (ET430B / ET430 / ET431 / ET432): USB Type-C charging / data cable, charging adapter, gold-plated shorting plate, red/black alligator-clip test leads, built-in large-capacity lithium battery
• Standard (ET433): Kelvin test fixture
• Optional (ET430B / ET430 / ET431 / ET432): Kelvin test fixture, SMD chip test tweezers
• Optional (ET433): SMD chip test tweezers

Downloads

Overview

The ET3500 series precision LCR meter is a high-precision component parameter analyser designed on the automatic balance bridge principle. Its 10 Hz – 1 MHz test bandwidth with continuously adjustable frequency, 0.05 % basic measurement accuracy, automatic level control, list scan and binning functions provide accurate, complete measurement and analysis for most components and materials — widely used in product R&D, incoming component inspection and in-line production sorting.

Features

• Frequency measurement range 10 Hz – 1 MHz
• Basic accuracy 0.05 %
• Test frequency user-defined, continuously adjustable in 1 mHz steps
• Measurement speed up to 200 times/s
• Internal programmable DC bias voltage
• Supports externally applied DC bias voltage
• V and I test-signal monitoring
• 10-point list scan test function
• 10-bin sorting and counting functions
• 7-inch LCD, Chinese / English interface, bridge operating system
• Test level 10 mV – 2000 mV, user-defined, continuously adjustable in 1 mV steps
• SCPI programming protocol supported
• Interfaces: USB Host, USB Device, LAN, RS232, HANDLER (GPIB optional)

Specifications

Item	ET3510	ET3505	ET3503	ET3502	ET3501
Frequency range	10 Hz – 1 MHz	10 Hz – 500 kHz	10 Hz – 300 kHz	10 Hz – 200 kHz	10 Hz – 100 kHz
Test frequency points	User-defined frequency, continuously adjustable in 1 mHz steps
Test level range	10 mV – 2000 mVrms, 1 mV steps, continuously adjustable
Basic accuracy	0.05 %
Display	6½-digit display resolution
Frequency resolution & accuracy	Resolution 1 mHz · accuracy 0.01 %
Test parameters	Cp-D, Cp-Q, Cp-G, Cp-Rp, Cs-D, Cs-Q, Cs-Rs, Lp-D, Lp-Q, Lp-G, Lp-Rp, Ls-D, Ls-Q, Ls-Rs, Rs-Xs, |Z|-θr, |Z|-θd, |Y|-θr, |Y|-θd, G-B
Measurement display speed (≥100 Hz)	Fast 50/s (20 ms) · medium 10/s (100 ms) · slow 1.25/s (800 ms)
Custom measurement speed (≥1 kHz)	User-settable, 0.5/s – 200/s
LCR parameter display ranges	Cp, Cs: 0.001000 pF – 99.9999 F · Lp, Ls: 0.001000 nH – 99.9999 kH · Rp, Rs, |Z|, Xs: 0.001000 mΩ – 999.999 MΩ · G, B, |Y|: 0.001000 µS – 999.999 kS · θr: ±0.000001 rad – 3.14159 rad · θd: ±0.000001 deg – 179.9999 deg · D: ±0.000001 – 9.99999 · Q: ±0.001 – 99999.9
Voltage measurement	Resolution 1 mV · accuracy 5 % + 5 mV
Test signal current	Range 100 µArms – 20 mArms · resolution 10 µA · accuracy 5 % + 50 µA
Signal source output impedance	30 Ω, 100 Ω
Comparator	8 pass bins, 1 fail bin, 1 AUX bin
Trigger modes	Internal, manual, external, bus
Math operations	Delta (absolute value), Delta% (percentage), direct reading
Calibration	Self-calibration, open, short, load, 100 user-defined frequency points
List scan	10-point list scan test
Standard interfaces	LAN, RS232, USB Host, USB Device, Handler (GPIB optional)

Measurement objects

• Passive components: impedance parameter evaluation and performance analysis of capacitors, inductors, magnetic cores, resistors, piezoelectric devices, transformers, chip components and network components
• Semiconductor components: C-VDC characteristics of varactor diodes; parasitic parameter analysis of transistors and integrated circuits
• Other components: impedance evaluation of printed circuit boards, relays, switches, cables and batteries
• Dielectric materials: permittivity and loss-angle evaluation of plastics, ceramics and other materials; permeability and loss-angle evaluation of ferrites, amorphous and other magnetic materials
• Semiconductor materials: permittivity, conductivity and C-V characteristics
• Liquid crystal materials: permittivity, elastic constants and other C-V characteristics

Applications

• Electronics: capacitors, substrates, PCBs, antennas, ferrites, shock absorbers, SAW materials
• Aerospace & defence: stealth materials, radar-absorbing materials (RAM), radomes
• Industrial materials: ceramics and composites, automotive parts, coatings
• Polymers & plastics: fibres, films, insulating materials
• Hydrogels: disposable diapers, soft contact lenses
• LCD displays
• Other products containing such materials: tyres, paints, adhesives
• Food & agriculture: food preservation (spoilage research), microwave food development, packaging, moisture measurement
• Forestry & mining: wood / paper moisture measurement, oil content analysis
• Pharmaceutical & medical: drug research and production, biological implants, human tissue characterisation, biomass, fermentation

Accessories

• Standard: three-core power cord (30A51), Kelvin test fixture (35P04)
• Optional: SMD component test fixture (35P02), SMD four-terminal chip test tweezers (35P03), lead-type test fixture (35A52)

Downloads

Overview

The ET3300 series dual-channel function / arbitrary waveform generator is designed with direct digital synthesis (DDS) technology to produce precise, stable, low-distortion output signals.

Features

• Frequency range 1 µHz to 60 / 40 / 25 / 15 MHz depending on model
• 200 MSa/s sampling rate, 13-bit vertical resolution, 8k storage depth
• Dual-channel independent output with phase synchronization
• Built-in 5 basic waveforms and 32 arbitrary waveforms
• Waveform storage: 50 groups of user-defined waveforms in internal memory
• Pulse output with adjustable edge time
• External analog modulation function (optional)
• Linear / logarithmic sweep and burst waveform output
• Built-in 100 MHz high-precision frequency meter and 32-digit counter
• Chinese and English menus; key help for convenient information access
• Internal / external AM, FM, PM analog modulation and ASK, FSK, PSK digital modulation
• 3.5-inch 480×320 TFT LCD with a clear graphical interface
• Standard interfaces RS232 and USB Device, SCPI protocol supported (USB Host optional)

Specifications

Item	ET3315	ET3325	ET3340	ET3360
Sine wave	1 µHz – 15 MHz	1 µHz – 25 MHz	1 µHz – 40 MHz	1 µHz – 60 MHz
Square wave	1 µHz – 15 MHz
Ramp (triangle)	1 µHz – 15 MHz
Pulse wave	100 µHz – 6 MHz
Arbitrary wave	1 µHz – 6 MHz
Noise (−3 dB)	7 MHz bandwidth
Frequency	Resolution 1 µHz · accuracy ±5 ppm · stability ±1 ppm / 3 h
Waveform types	Sine, square, ramp, pulse, noise, arbitrary (incl. DC) · 12 built-in waveforms and 50 user-defined waveforms · waveform length 8192 points · sampling rate 200 MSa/s · vertical resolution 13 bit
Sine characteristics	Harmonic distortion ≥45 dBc (<1 MHz), 40 dBc (1 – 20 MHz) · total distortion <0.8 % (20 Hz – 20 kHz, 0 dBm)
Square characteristics	Rise / fall time <20 ns · overshoot <5 % · duty cycle 1 % – 99 % (freq <100 kHz), 20 % – 80 % (100 kHz – 5 MHz), 40 % – 60 % (≥5 MHz), 0.1 % resolution
Pulse characteristics	Pulse width min 20 ns, 1 ns resolution · min edge transition 20 ns · overshoot <5 % · jitter 6 ns + 0.1 % of period
Ramp characteristics	Linearity ≥98 % (0.01 Hz – 10 kHz) · symmetry 0.0 – 100.0 %, resolution 0.1 %
Amplitude range	2 mVpp – 20 Vpp (freq <10 MHz) · 2 mVpp – 10 Vpp (10 MHz ≤ freq <30 MHz) · 2 mVpp – 5 Vpp (freq ≥30 MHz)

Output & modulation

• Amplitude: resolution 1 mV · accuracy ±1 % of setting + 2 mVpp (1 kHz sine, 0 offset, >10 mVpp) · flatness ±0.4 dB (<10 MHz) / ±1.0 dB (≥10 MHz), relative to 1 kHz sine, 1 Vpp
• Output: impedance 50 Ω ±10 % (typical) · short-circuit protection — outputs are automatically disabled within 60 s on overload
• Phase: adjustable range 0 – 359.9°, resolution 0.1°
• Frequency counter: frequency range 1 Hz – 100 MHz · period measurement 0.01 s – 10 s (square wave) · counting capacity 0 – 4294967295 · manual count mode · input signal 2 Vpp – 20 Vpp · DC / AC coupling
• SYNC output: CH1 or CH2 (default CH1) · TTL compatible level · impedance 50 Ω · rise / fall <25 ns · max frequency 25 MHz
• AM: carrier sine / square / ramp / pulse / arbitrary (except DC) · internal or external source · modulation waveform sine / square / ramp · modulation frequency 2 mHz – 20 kHz · depth 0 % – 120 %
• FM: same carrier and source options · modulation frequency 2 mHz – 20 kHz · frequency deviation 0 to max carrier frequency
• PM: same carrier and source options · phase deviation 0° – 360°
• ASK / FSK / PSK: carrier sine / square / ramp / pulse / arbitrary (except DC) · internal or external source · 50 % duty-cycle square modulation · keying frequency 2 mHz – 1 MHz (PSK phase shift 0° – 360°)
• Sweep: carrier sine / square · linear or logarithmic · sweep time 1 ms – 500,000 s · upward or downward · internal / external / manual trigger
• Burst: waveforms sine / square / ramp / pulse / noise / arbitrary (except DC) · burst count 1 – 65535 or infinite, gated · period 1 µs – 500 s · start phase 0° – 360° · internal / external / manual trigger
• Trigger input: 2 Vpp – 20 Vpp · DC / AC coupling · pulse width >100 ns · response time <500 ns (sweep), <10 µs (burst)
• External modulation input: impedance 1 MΩ · input range ±2.5 V ac+dc

General

• Power supply: 220 V AC ±10 % or 110 V AC ±10 %, 45 – 65 Hz
• Display: 3.5-inch TFT, 480 × 320, 16M colours
• Temperature: operating 10 – 40 °C · non-operating −10 – 60 °C
• Humidity: ≤90 % RH (0 – 40 °C)
• Interfaces: RS232, USB Device
• Size & weight: 265 × 105 × 305 mm (W × H × D) · 2.3 kg

Accessories

• Standard: A51-type three-core power cord × 1, A52-type BNC coaxial cable × 1

Downloads

Overview

The ET3300C series is an economy dual-channel function / arbitrary waveform generator built on direct digital synthesis (DDS) technology, producing stable, precise output signals. It provides CH1 and CH2 outputs; both channels can output basic and arbitrary waveforms, and one channel can produce modulated output while the other outputs a basic waveform.

Features

• Frequency range 1 µHz to 60 / 40 / 20 MHz depending on model
• Two channels with independent output and phase synchronization
• 200 MSa/s sampling rate, 13-bit vertical resolution
• Built-in 5 basic waveforms and 32 arbitrary waveforms
• Waveform storage: supports 50 groups of user-defined waveforms in internal memory
• Built-in 100 MHz high-precision frequency meter and 32-digit counter
• Internal AM, FM and PM modulation
• Internal / external ASK, FSK and PSK modulation
• Linear / logarithmic sweep and burst waveform output
• 2.4-inch TFT LCD with a clear graphical interface
• Chinese and English menu display
• Pulse output with adjustable edge time
• Standard interface: USB Device

Specifications

Item	ET3320C	ET3340C	ET3360C
Sine wave	1 µHz – 20 MHz	1 µHz – 40 MHz	1 µHz – 60 MHz
Square wave	1 µHz – 15 MHz
Ramp (triangle)	1 µHz – 15 MHz
Pulse wave	100 µHz – 6 MHz
Arbitrary wave	1 µHz – 6 MHz
Frequency	Resolution 1 µHz · accuracy ±20 ppm · stability ±1 ppm / 3 h
Waveform types	Sine, square, ramp, pulse, noise, arbitrary (incl. DC) · 32 built-in arbitrary waveforms plus 50 user-defined waveforms · waveform length 8192 points · sampling rate 200 MSa/s · vertical resolution 13 bit
Sine characteristics	Harmonic suppression ≥45 dBc (<1 MHz), ≥40 dBc (1 – 20 MHz) · total distortion <0.8 % (20 Hz – 20 kHz, 0 dBm)
Square characteristics	Rise / fall time <20 ns · overshoot <5 % · duty cycle 1 % – 99 % (freq <100 kHz), 20 % – 80 % (100 kHz – 5 MHz), 40 % – 60 % (≥5 MHz), 0.1 % resolution
Pulse characteristics	Pulse width min 20 ns, 1 ns resolution · min edge transition 20 ns · overshoot <5 % · jitter 6 ns + 0.1 % of period
Ramp characteristics	Linearity ≥98 % (0.01 – 10 kHz) · symmetry 0.0 – 100.0 %, resolution 0.1 %
Amplitude range	2 mVpp – 20 Vpp (freq <10 MHz) · 2 mVpp – 10 Vpp (10 MHz ≤ freq <30 MHz) · 2 mVpp – 5 Vpp (freq ≥30 MHz)

Output & modulation

• Amplitude: resolution 1 mV · accuracy ±1 % of setting + 2 mVpp (1 kHz sine, 0 offset, >10 mVpp) · flatness ±0.4 dB (<10 MHz) / ±1.0 dB (≥10 MHz), relative to 1 kHz sine, 1 Vpp
• Output: impedance 50 Ω ±10 % (typical) · protection: all outputs withstand a load short circuit for up to 60 s
• Offset: output range ±10 Vpk, ac+dc (output amplitude >0.1 V) · ±0.250 Vpk, ac+dc (2 mV < output amplitude ≤0.1 V) · offset resolution 1 mV
• Phase: adjustable range 0 – 359.9°, resolution 0.1°
• External measurement: frequency measurement range 1 Hz – 100 MHz · gate time 0.01 s – 10 s, continuously adjustable · counter range 0 – 4294967295 · manual count mode · input signal 2 Vpp – 20 Vpp · DC / AC coupling · pulse-width measurement 1 ns resolution, up to 20 s · period measurement 1 ns resolution, up to 20 s
• AM: output CH1 or CH2 · carrier sine / square / ramp / pulse / arbitrary (except DC) · source internal / external VCO (external optional) · modulation waveform sine / square / ramp (up / down) · modulation frequency 2 mHz – 20 kHz · depth 0 % – 120 %
• FM: same carrier and source options · modulation frequency 2 mHz – 20 kHz · frequency deviation 0 to max carrier frequency
• PM: same carrier and source options · modulation frequency 2 mHz – 20 kHz · phase deviation 0° – 360°
• ASK: carrier sine / square / ramp / pulse / arbitrary (except DC) · internal / external source · 50 % duty-cycle square modulation · rate 2 mHz – 1 MHz · modulation amplitude 0 to carrier amplitude
• FSK: same carrier and source options · 50 % duty-cycle square · rate 2 mHz – 1 MHz · hop frequency within the carrier frequency range
• PSK: same carrier and source options · 50 % duty-cycle square · rate 2 mHz – 1 MHz · phase shift 0° – 360°
• Sweep: output CH1 or CH2 · linear or logarithmic · sweep time 1 ms – 999.999 s · start and stop frequencies freely settable · direction forward / reverse / round-trip · trigger internal / external / manual
• Burst: output CH1 or CH2 · carrier sine / square / ramp / pulse / noise / arbitrary (except DC) · burst count 1 – 1048575 or infinite, gated · start / stop phase 0° – 360° · internal period 1 µs – 500 s · gate source external · trigger internal / external / manual
• Trigger input: signal 2 Vpp – 20 Vpp · DC / AC coupling · pulse width >100 ns · response time <500 ns (burst), <10 µs (sweep)

General

• Display: 2.4-inch TFT LCD
• Interface: USB Device (standard)

Accessories

• Standard: three-core power cord × 1, BNC-to-alligator-clip cable × 2, BNC coaxial cable × 1, USB data cable × 1

Downloads

Overview

The ET3260 series is a 6½-digit benchtop digital multimeter with a 3.5-inch high-resolution colour display, high accuracy, fast measurement and an intelligent operating system. Its dual reference calibration feature lets the user complete full-function calibration with only one 10 V standard voltage and one 10 kΩ standard resistor, in under one hour in total. The ET3260 and ET3260A share the same measurement specification; they differ in input terminals and standard interfaces (see the table below).

Features

• 6½-digit resolution with 120 % over-range display; dual display shows two parameters of the same input signal simultaneously (for example AC voltage together with AC frequency)
• Current measurement up to 12 A; trigger input and measurement-complete output
• Front-panel USB port for data storage, program upgrade and configuration
• 2-wire and 4-wire resistance measurement; 10 Ω and 1 GΩ extended ranges
• Period and frequency measurement up to 300 kHz; capacitance measurement; temperature measurement with user-defined sensors
• 12 math functions: MAX, MX+B, MIN, dB, dBm, REL, Hold, %, Average, upper/lower limit comparison, statistics (max / min / average) and reciprocal
• Graphical displays — trend chart, histogram and history curve; graph, numeric and math displays can be shown on screen at the same time
• SCPI programming language with multiple command sets; front and rear panel input terminals (ET3260); standard interfaces RS232, LAN, USB Device and USB Host, with GPIB supported on ET3260

Specifications

Item	ET3260	ET3260A
Display	3.5″ TFT colour LCD, 480 × 320, 16M colours · 6½ digits
Signal terminals	Front / rear test terminals	Front test terminals
Interfaces	RS232 · LAN · USB Device · USB Host · Trig IN/OUT · GPIB (IEEE-488)	RS232 · LAN · USB Device · USB Host · Trig IN/OUT
Max. speed	2500 readings/s · uncertainty ±(% of reading + % of range)
DCV	Uncertainty 0.0035 + 0.0005 · range 0 mV – 1000 V · best resolution 100 nV
ACV	Uncertainty 0.06 + 0.03 · range 1 mV – 750 V · best resolution 100 nV · frequency range 3 Hz – 300 kHz
DCI	Uncertainty 0.05 + 0.006 · range 0 µA – 12 A · best resolution 10 pA
ACI	Uncertainty 0.10 + 0.04 · range 1 µA – 12 A · best resolution 100 pA · frequency range 3 Hz – 10 kHz
Resistance	Uncertainty 0.01 + 0.001 · range 0 Ω – 1 GΩ · best resolution 10 µΩ
Frequency / period	Uncertainty 0.01 % · range 3 Hz – 1 MHz · best resolution 1 µHz
Capacitance	Uncertainty 1 + 0.3 · range 0 nF – 100 mF · best resolution 1 pF
Diode / continuity	Yes
Ratio (DC:DC)	Reference range 100 mV – 10 V · input range 100 mV – 1000 V
Temperature	Platinum resistor, thermocouple, user-defined sensor · best resolution 0.001 °C
Math functions	Relative (ax + b), max / min / average, standard deviation, dB, dBm, reading hold, limit test
Graphics	Histogram, trend chart, history curve
Programming	SCPI — compatible with Agilent 34401A / 34410A and Fluke 45 command sets
Data storage	512K
Power supply	220 V AC ±10 % or 110 V AC ±10 %, 45 – 65 Hz · power consumption < 20 W
Environment	Operating temperature −5 °C to +45 °C · humidity 5 % – 85 % RH
Size & weight	265 × 102 × 335 mm (W × H × D) · 3.2 kg

Accessories

• Standard: three-core power cord × 1, test lead pair × 1, spare fuse
• Optional: GPIB cable (32P01) · rack mount kit (32P02) · Pt100 temperature probe (32P03) · RS232 serial cable (32P04) · USB data cable (32P05)

Downloads

Overview

The ET3255 series is a full-function, stable true-RMS benchtop digital multimeter with dual display. Built on an STM32 chip with an external dual-integration ADC for accurate measurement and stable performance, it has a 3.5-inch 320×480 high-resolution TFT display with clear, rich readings. Mains powered with full-function, full-range overload protection, it is an essential instrument for electricians, electronics engineers and university laboratories.

Features

• 5⅚-digit resolution, maximum display 660000; basic accuracy 0.01 %
• DC current up to 12 A, DC voltage up to 1100 V
• Period and frequency measurement up to 20 MHz
• Data hold, data storage and data recall
• True RMS AC voltage and current measurement, bandwidth up to 100 kHz
• AC+DC measurement, duty cycle measurement, continuity and diode measurement
• Dual display: two parameters of the same input signal at the same time (e.g. AC voltage value and AC frequency)
• 12 basic measurement functions: AC/DC voltage, AC/DC current, 2-wire/4-wire resistance, period, frequency, diode, continuity, limit test, duty cycle
• Math functions: upper/lower limit comparison, statistics (max/min/average), reciprocal, relative, dB, dBm, %, MX+B
• Square-wave output; capacitance measurement up to 10 mF
• Trigger modes: automatic, single and external
• Temperature measurement: 10 thermocouple types (K/N/R/S/T/B/E/J/WRe325/WRe526) and 4 RTD types (PT100/PT50/Cu100/Cu50)
• Measurement speeds: fast, medium, slow
• System settings: language (Chinese or English), buzzer, screen brightness and interface style adjustable
• 3.5-inch TFT display (320×480), adjustable screen brightness
• Interfaces: USB Device, RS232, SCPI protocol supported

Specifications

Item	ET3255	ET3256	ET3257	ET3258
Reading display	220000 (5½)	220000 (5½)	550000 (5 4/5)	660000 (5⅚)
Display speed	Fast / Medium / Slow
DC voltage	Range 1000 V · best resolution 1 µV · uncertainty ±(0.015 % + 3)		Range 1100 V · best resolution 1 µV · uncertainty ±(0.01 % + 3)
DC current range	10 A	12 A
DC current	Best resolution 1 nA · uncertainty ±(0.05 % + 10)		Best resolution 1 nA · uncertainty ±(0.03 % + 10)
AC voltage range	750 V	800 V
AC voltage	Frequency range — · best resolution 1 µV · uncertainty ±(0.2 % + 100)	Frequency range 20 Hz – 100 kHz · best resolution 1 µV · uncertainty ±(0.2 % + 100)	Frequency range 20 Hz – 100 kHz · best resolution 1 µV · uncertainty ±(0.1 % + 100)
AC current range	10 A	12 A
AC current	Frequency range 20 Hz – 10 kHz · best resolution 1 nA · uncertainty ±(0.2 % + 100)		Frequency range 20 Hz – 10 kHz · best resolution 1 nA · uncertainty ±(0.1 % + 100)
Resistance range	200 MΩ		1 GΩ
Resistance	Best resolution 1 mΩ · uncertainty ±(0.015 % + 3)	Best resolution 1 mΩ · uncertainty ±(0.01 % + 3)
Capacitance	Range 10 mF · best resolution 1 pF · uncertainty ±(1 % + 5)
Frequency	Range 20 MHz · best resolution 0.0001 Hz · uncertainty ±(0.005 % + 3)

Other functions

• Temperature: 10 thermocouple types R/S/B/K/N/E/J/T/WRe325/WRe526; 4 RTD types Pt100, Pt10, Cu50, Cu100
• Math: max, min, upper/lower limit comparison, statistics, reciprocal, relative, dB, dBm, duty cycle, %, MX+B
• Trigger: automatic, single, external
• User-defined sensors: not supported on ET3255; supported on ET3256 / ET3257 / ET3258 (user-set curves downloaded via USB, up to 20 types)
• Graphical display: not supported on ET3255; bar graph, trend chart and histogram on the other three models
• Data hold, data storage, data recall
• Square-wave output: 1 Hz – 100 kHz, amplitude 3 V
• Cold-junction compensation: built-in temperature sensor, automatic and manual compensation
• Duty cycle: 5.0 % – 95.0 %
• Continuity: buzzer sounds below the threshold; threshold resistance adjustable 0 – 2 kΩ, default 30 Ω
• Diode: 0 – 2 V
• Limit test: supported · AC+DC measurement: supported · Resistance: 2-wire and 4-wire
• Standard interfaces: USB Device, RS232

General

Power supply	220 V AC ±10 % or 110 V AC ±10 %, 45 – 65 Hz
Operating environment	0 – 40 °C, relative humidity < 80 %
Storage	−10 – 50 °C, relative humidity < 80 %
Display	3.5″ TFT LCD, 480 × 320, 16M colours
Size & weight	265 × 105 × 305 mm (W × H × D) · 2.3 kg

Accessories

• Standard: three-core power cord × 1, test lead pair × 1, spare fuse
• Optional: GPIB cable (32P01) · rack mount kit (32P02) · RS232 serial cable (32P04) · USB data cable (32P05)

Downloads

Overview

The ET3240 series is a full-function, stable true-RMS benchtop digital multimeter with dual display. Built on an STM32 chip with an external dual-integration ADC, it provides accurate measurement and stable performance, with a 3.5-inch 320×480 high-resolution TFT display giving clear, rich readings. Mains powered with full-function, full-range overload protection, it is an essential instrument for electricians, electronics enthusiasts and engineers, and university laboratories.

Features

• 4⅚-digit resolution, maximum display 66000; basic accuracy 0.02 %
• DC current up to 12 A, DC voltage up to 1100 V
• Period and frequency measurement up to 20 MHz
• Data hold, data storage and data recall
• Capacitance measurement up to 10 mF
• True RMS AC voltage and current measurement, bandwidth up to 100 kHz
• Dual display: two parameters of the same input signal at the same time (e.g. AC voltage value and AC frequency)
• Trigger modes: automatic, single and external
• 12 basic measurement functions: AC/DC voltage, AC/DC current, 2-wire/4-wire resistance, period, frequency, diode, continuity, limit test, duty cycle, AC+DC measurement
• Math functions: upper/lower limit comparison, statistics (max/min/average), reciprocal, relative, dB, dBm, %, MX+B
• Temperature measurement: 10 thermocouple types (K/N/R/S/T/B/E/J/WRe325/WRe526) and 4 RTD types (PT100/PT50/Cu100/Cu50)
• Measurement speeds: fast, medium, slow
• System settings: language (Chinese or English), buzzer, screen brightness and interface style adjustable
• 3.5-inch TFT display (320×480), adjustable screen brightness
• Interfaces: USB Device, SCPI protocol supported (RS232 optional)

Specifications

Item	ET3240	ET3241	ET3241B	ET3242	ET3243
Reading display	22000 counts	22000 counts	44000 counts	55000 counts	66000 counts
Display speed	Fast / Medium / Slow
DC voltage range	1000 V		1100 V
DC voltage	Best resolution — · uncertainty ±(0.05 % + 3)	Best resolution 10 µV · uncertainty ±(0.05 % + 3)	Best resolution 10 µV · uncertainty ±(0.02 % + 3)
DC current range	10 A		12 A
DC current	Best resolution — · uncertainty ±(0.35 %)	Best resolution 10 nA · uncertainty ±(0.1 % + 3)		Best resolution 10 nA · uncertainty ±(0.05 % + 3)
AC voltage range	750 V		800 V
AC voltage	Frequency range — · best resolution — · uncertainty ±(0.8 % + 80)		Frequency range 40 Hz – 100 kHz · best resolution 10 µV · uncertainty ±(0.2 % + 20)
AC current range	10 A		12 A
AC current	Frequency range — · best resolution — · uncertainty ±(0.8 % + 80)		Frequency range 40 Hz – 10 kHz · best resolution 10 nA · uncertainty ±(0.3 % + 3)
Resistance range	200 MΩ		1 GΩ
Resistance	Best resolution — · uncertainty ±(0.1 % + 6)	Best resolution — · uncertainty ±(0.05 % + 5)	Best resolution 10 mΩ · uncertainty ±(0.04 % + 5)	Best resolution 10 mΩ · uncertainty ±(0.03 % + 5)
Capacitance	Range 10 mF · best resolution 10 pF · uncertainty ±(3.5 % + 30)	Range 10 mF · best resolution 10 pF · uncertainty ±(2 % + 5)
Frequency	Range 20 MHz · best resolution 0.001 Hz · uncertainty ±(0.2 % + 10)	Range 20 MHz · best resolution 0.001 Hz · uncertainty ±(0.05 % + 3)	Range 20 MHz · best resolution 0.001 Hz · uncertainty ±(0.02 % + 3)	Range 20 MHz · best resolution 0.001 Hz · uncertainty ±(0.01 % + 3)

Other functions

• Temperature: 10 thermocouple types R/S/B/K/N/E/J/T/WRe325/WRe526; 4 RTD types Pt100, Pt10, Cu50, Cu100
• Math: upper/lower limit comparison, statistics (max/min/average), reciprocal, relative, dB, dBm, %, MX+B
• Trigger: automatic, single
• User-defined sensors: not supported on ET3240; supported on ET3241 / ET3241B / ET3242 / ET3243 (user-set curves downloaded via USB interface, up to 20 types)
• Graphical display: not supported on ET3240; bar graph, trend chart and histogram on the other four models
• Data hold, data storage, data recall
• Cold-junction compensation: built-in temperature sensor, automatic and manual compensation
• Duty cycle: 5.0 % – 95.0 %
• Continuity: buzzer sounds below the threshold; threshold resistance adjustable 0 – 2 kΩ, default 30 Ω
• Diode: measurement range 0 – 2 V
• Limit test: supported · AC+DC measurement: supported · Resistance: 2-wire and 4-wire
• Standard interface: USB Device (RS232 optional)

General

Power supply	220 V AC ±10 % or 110 V AC ±10 %, 45 – 65 Hz
Operating environment	0 – 40 °C, relative humidity < 80 %
Storage	−10 – 50 °C, relative humidity < 80 %
Display	3.5″ TFT LCD, 480 × 320
Size & weight	265 × 105 × 305 mm (W × H × D) · 2.3 kg

Accessories

• Standard: three-core power cord × 1, test lead pair × 1, spare fuse
• Optional: RS232 serial cable (32P04) · USB data cable (32P05)

Downloads

Overview

The ETP-A series is a single-output adjustable DC regulated power supply with a four-digit LED display that shows voltage and current simultaneously. Constant-voltage (CV) and constant-current (CC) modes switch automatically, and voltage and current are continuously adjustable. Advanced switch-mode control technology and components give high efficiency, light weight, energy saving and environmental friendliness.

Features

• Maximum output range: 300 W power, 60 V voltage, 10 A current
• Resolution up to 10 mV and 1 mA
• LED digital display, 4-digit voltage and current readout
• Automatic CV / CC mode switching with status indicator
• Overvoltage, overcurrent, overpower and overtemperature protection
• One group of quick parameter storage and recall
• Standard RS232 communication interface, remote control supported
• SCPI programming protocol supported; RS485 address settable internally
• Intelligent temperature-controlled fan — energy saving
• Keypad and encoder adjustment, with digit-by-digit precise setting

Specifications by model

Item	ETP1503A	ETP1506A	ETP3003A	ETP3005A	ETP3010A	ETP6003A	ETP6005A
Output voltage	0 – 15 V	0 – 15 V	0 – 30 V	0 – 30 V	0 – 30 V	0 – 60 V	0 – 60 V
Output current	0 – 3 A	0 – 6 A	0 – 3 A	0 – 5 A	0 – 10 A	0 – 3 A	0 – 5 A
Output power	45 W	90 W	90 W	150 W	300 W	180 W	300 W

General specifications (all models)

CV mode	Voltage stability ≤ 0.1 % ± 3 mV · load stability ≤ 0.1 % ± 3 mV
CC mode	Current stability ≤ 0.1 % ± 3 mA · load stability ≤ 0.1 % ± 3 mA
Display accuracy	Voltage 0.5 % ± 3 digits · current 0.5 % ± 3 digits
Ripple and noise	Vpp ≤ 1 %
Display resolution	Voltage up to 10 mV · current up to 1 mA
Display	4-digit LED digital tube
Power input	AC 220 V ± 10 % / 50 Hz or AC 110 V ± 10 % / 60 Hz (optional — to be specified before purchase)
Operating environment	Indoor use · altitude ≤ 2000 m · temperature 5 – 40 °C · humidity 10 % – 85 % RH
Storage environment	Temperature −20 – 80 °C · humidity ≤ 80 % RH
Dimensions	190 × 70 × 130 mm (L × W × H)
Weight	Net 1.1 kg

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