CVMS2840 Series

Super Fast LCR Meter
Frequency 20Hz-2MHz.
Basic Accuracy: 0.05%
AC Signal: 20V/100mA
DC Bias: 0+/-40V, 0+/-100mA
AC Current Source: +/-2A

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Features

■ Test frequency: 20Hz-2MHz

■ High stability and consistency: 14 range configurations

■ High power: signal level: 20VAC/100mAAC

Built-in DC bias: ±40VDC/100mADC

Built-in current source: ±2A

■ DCR level: 20VDC/100mADC

■ High speed: dual CPU architecture, measurement speed up to 1000 times/s

■ High resolution: 10.1 inches, resolution 1280*800, capacitive touch screen

■ Three test methods: point test, list scan, and graph scan

■ Four-parameter measurement

■ 201 point multi-parameter list scanning function

■ Graphic scanning function, 4 trajectories can be selected arbitrarily, support 1/2/4 split screen

■ Sorting function: 10 levels of sorting in LCR mode

■ High compatibility: support SCPI/MODBUS instruction set, compatible with KEYSIGHT E4980A, E4980AL, HP4284A

Specifications

Model	CVMS2840A	CVMS2840B
Display	Display	10.1″ Touch Screen
Ratio	16:09
Resolution	1280×RGB×800
Parameter	Test Mode	Four Parameter Selectable
AC	Cp/Cs, Lp/Ls, Rp/Rs, \|Z\|, \|Y\|, R, X, G, B, θ, D, Q, VAC, IAC
DC	RDC, VDC, IDC
Frequency	Range	20Hz-500kHz
Frequency Range	20Hz-500kHz	20Hz-2MHz
Accuracy	0.01%
Frequency Resolution	0.1mHz (20.0000Hz-99.9999Hz) 1mHz (100.000Hz-999.999Hz) 10mHz (1.00000kHz-9.99999kHz) 100mHz (10.0000kHz-99.9999kHz) 1Hz (100.000kHz-999.999kHz) 10Hz (1.00000MHz-2.00000MHz)
AC Test Signal Mode	Rated value (ALC OFF)	Set the voltage as the Hcur voltage when the test terminal is open. Set the current to be the current flowing from Hcur when the test terminal is short-circuited.
Constant Value (ALC ON)	Keep the voltage on the DUT the same as the set value	Keep the current on the DUT the same as the set value
Test Level	AC Voltage	5mVrms-20Vrms F≤1MHz 5mVrms-20Vrms F＞1MHz 5mVrms-15Vrms
AC Voltage Accuracy	±（10%×Set Value+2mV) (AC less than 2Vrms) ±（10%×Set Value+5mV）(AC＞2Vrms)
AC Voltage Resolution	1mVrms（5mVrms-0.2Vrms） 1mVrms（0.2Vrms-0.5Vrms） 1mVrms (0.5Vrms-1Vrms) 10mVrms (1Vrms-2Vrms) 10mVrms (2Vrms-5Vrms) 10mVrms (5Vrms-10Vrms) 10mVrms (10Vrms-20Vrms)
AC Current	50μArms-100mArms
Resolution (100Ω Internal Resistance)	10μArms (50μArms-2mArms) 10μArms (2mArms-5mArms) 10μArms (5mArms-10mArms) 100μArms (10mArms-20mArms) 100μArms (20mArms-50mArms) 100μArms (50mArms-100mArms)
RDC Test	Voltage	100mV-20V
RDC Voltage Resolution	1mV (0V-1V) 10mV (1V-20V)
Current	0mA-100mA
Current Resolution	10μA (0mA-10mA) 100μA (10mA-100mA)
DC Bias	Voltage	0V-±40V
DC Bias Accuracy	AC=<2V 1%× Set Value+5mV AC>2V 2%×Set Value+8mV
DC Bias Voltage Resolution	1mV (0V-1V) 10mV (±1V- ±40V)
DC Bias Current	0mA-±100mA
DC Bias Current Resolution	10μA (0mA-10mA) 100μA (10mA-100mA)
Built-in Current Source	Current	0mA-2A
Built-in Current Source Accuracy	I>5mA ±（2%×Set Value+2mA）
Built-in Current Source Resolution	1mA
Test Terminal Configuration	Four Terminal Pair
Test Cable Length	0m, 1m, 2m, 4m
Output Impedance	30Ω, ±4%@1kHz 100Ω, ±2%@1kHz
Computation	The absolute deviation from the nominal value Δ, the percentage deviation from the nominal value Δ%
Equivalent Way	Series, Parallel
Calibration Function	OPEN, SHORT, LOAD
Measurement Average	1-255
Range Selection	AUTO, HOLD
Range Configuration – LCR	100mΩ, 1Ω, 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ
Range Configuration – Rdc	1Ω, 10Ω, 20Ω, 50Ω, 100Ω, 200Ω, 500Ω, 1kΩ, 2kΩ, 5kΩ, 10kΩ, 20kΩ, 50kΩ, 100kΩ
Measuring Time (ms)	Fast+: 1ms Fast: 3.3ms Middle: 90ms Slow: 220ms
Highest Accuracy	0.05% (refer to the instruction manual for details)
Measurement Display Range – Cs, Cp	0.00001pF-9.99999F
Ls, Lp	0.00001μH-99.9999kH
D	0.00001-9.99999
Q	0.00001-99999.9
R, Rs, Rp, X, Z, RDC	0.001mΩ-99.9999MΩ
G, B, Y	0.00001μs-99.9999S
VDC	±0V-±999.999V
IDC	±0A-±999.999A
θr	-3.14159-3.14159
θd	-179.999°-179.999°
Δ%	±（0.000%-999.9%）
Multi-function Parameter List Scan	Dots Number: 201 points, average times can be set for each point, and each point can be sorted separately
Parameter	Test frequency, AC voltage, AC current, DC BIAS voltage, DC BIAS current (100mA), DC BIAS current (2A)
Trigger Mode	Sequence SEQ: After a trigger, measure at all sweep points, and /EOM/INDEX will output only once. Step STEP: Perform a sweep point measurement each time it is triggered, and each point outputs /EOM/INDEX, but the list sweep comparator result is only output at the last /EOM.
Other Features	1. Scan parameters and test parameters have multiple copy functions. 2. Delay can be set for each scan point.
Comparators	Each sweep point can measure up to four test parameters, each parameter can set upper and lower limits, all test parameters are qualified, output PASS signal, otherwise output FAIL signal, no upper and lower limits are set, no judgment
Graphic Scan – Scan Points	51, 101, 201, 401, 801 Optional
Graphic Scan – Results	The extreme value of each parameter and the sweep parameter value at the point where the cursor is located and the corresponding test parameter value
Scan Trajectory	1-4 test parameters can be selected arbitrarily, the scanning curve can be divided into one screen, two screens, or four screens.
Display Range	Real-time automatic, locked
Coordinate Ruler	Logarithmic, linear
Scan Parameters	Frequency, AC voltage, AC current, DCV BIAS / DCI BIAS (100mA) / DCI BIAS (2A)
Trigger Mode – Single	Manually trigger once, and complete a scan from the start point to the end point, and the next trigger signal starts a new scan
Trigger Mode – Continuous	Infinite loop scanning from start to end
Results Save	Graphics, files
Comparators – Bin	10Bin, PASS, FAIL
Bin Deviation Setting	Deviation value, percentage deviation value, off
Bin Mode	Tolerance, continuous
Bin Count	0-99999
Discrimination	Up to four parameter limit ranges can be set for each file. The corresponding file number is displayed within the setting range of the four test parameter results. If the maximum file number range is exceeded, FAIL is displayed. The test parameters without the upper and lower limits are automatically ignored.
PASS/FAIL Indication	Meet Bin1-10, the PASS light on the front panel is on, otherwise the FAIL light is on
Data Cache	201 measurement results can be read in batches
Store Call – Inside	About 100M non-volatile memory test setting file
External USB	Test setting file, screenshot graph, record file
Keyboard Lock	The front panel keys can be locked, other functions to be expanded
Interface – USB HOST	2 USB HOST ports, can connect mouse and keyboard at the same time, only one U disk can be used at the same time
USB DEVICE	Universal serial bus socket, small type B (4 contact positions); compatible with USB TMCUSB488 and USB2.0, the female connector is used to connect an external controller.
LAN	10/100M Ethernet adaptive
HANDLER	Used for Bin signal output
External DC BIAS Control	Support TH1778A
RS232C	Standard 9-pin, cross
RS485	Can accept modification or external RS232 to RS485 module
Power-on Warm-up Time	60 Minutes
Input Voltage	100-120VAC/198-242VAC Option, 47-63Hz
Power Consumption	More than 130VA
Size (WxHxD) mm3	430x177x265
Weight (kg)	11kg

Accessories

Standard Accessories

Accessories Name	Model	Image
Fixture	CVMS26048B
Short circuit	CVMS26010
Kelvin test lead with box four-terminal insulation and lock	CVMS26011BS

Optional Accessories

Accessories Name	Model	Image

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