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Here are a summary table for our LCR products from 1960 and suggests a suitable replacement.

You can also click the following tabs to get detail information.

4210 4225 4250 => 4310

Old ModelReplacement Model
4210
10kHz Automatic LCR Meter
4225
10kHz Automatic LCR Meter
4250
100kHz Automatic LCR Meter		4310
LCR Meter
AvailableMade between 1983 and 1996First made in 2009 and still in production
Basic Accuracy4210 & 4250: 0.1%
4225: 0.25%		0.1%
Frequency Range4210 & 4225: 100Hz, 1kHz, 10kHz
4250: 100Hz, 1kHz, 10kHz & 100kHz		20Hz to 100kHz

The recommended replacement for all three models is now the 4310 LCR Meter. The 4310 has many significant improvements compared to the older models:

  • Lower minimum frequency (20Hz)
  • Many more measurement frequencies (557 steps)
  • Extra measurement parameters (Z Y θ B G X)
  • Wider AC Drive range (10mV to 1Vrms)
  • Many more AC Drive levels (200 steps)
  • Faster measurement speed
  • DC resistance as standard
  • Larger and easier to read display
  • Autoranging AC input voltage

Three additional 4300 models are available when a measurement frequency greater than 100kHz is required:

  • 4320 (20Hz to 200kHz)
  • 4350 (50Hz to 500kHz)
  • 43100 (20Hz to 1MHz)

More detail information PDF Sheet download

4230 => 4320

Old ModelReplacement Model
4230
LCR Meter		4310
LCR Meter
AvailableMade between 2004 and 2009First made in 2009 and still in production
Basic Accuracy0.1%
Frequency Range100Hz to 200kHz20Hz to 100kHz

The recommended replacement for the 4230 is the 4320. The 4320 has some significant improvements compared to the older model:

  • Wider AC Drive range - 200 steps from 10mV to 2Vrms
  • Faster measurement speed - 20ms
  • DC resistance as standard
  • Larger and easier to read display
  • Autoranging AC input voltage
  • GPIB, RS232, LAN and USB interfaces
  • Bin Handler options

More detail information PDF Sheet download

4265 4270 => 4300 Series

Old ModelReplacement Model
4265 100kHz
4270 1MHz
Automatic LCR Meter		4300 Series
LCR Meter
AvailableMade between 1996 and 2013First made in 2009 and still in production
Basic Accuracy0.1%
Frequency Range4265: 50Hz to 100kHz
4270: 50Hz to 1MHz		20Hz to 100kHz

The 4300 models have some significant improvements compared to the older ones:

  • Extra measurement parameters (Reactance X, Conductance G, Susceptance B and Admittance Y)
  • Faster measurement speed (17ms compared to 100ms)
  • DC resistance as standard
  • 20 setups can be stored to memory
  • USB, LAN, GPIB and RS232 all standard interfaces
  • 4 BNC connections allow all standard Wayne Kerr fixtures and leads to be used

The 4265 and 4270 were the only models which used the non-standard 8-pin Lemo connector to connect to the device under test. All current Wayne Kerr instruments use the standard 4-BNC 4-terminal pair connection method, and so all Wayne Kerr accessories currently available are interchangeable. The following table contains the key specification features. Further details are available on request.

More detail information PDF Sheet download

6425 => 6430B

Old ModelReplacement Model
6425
Precision Component Analyzer		6430B
Precision Component Analyzer
AvailableMade between 1984 and 1998First made in 1999 and still in production
Basic Accuracy0.05%0.02%
Frequency Range20Hz to 300kHz20Hz to 500kHz

The recommended replacement for the 6425 is either 6430B or 6440B, depending on what maximum measurement frequency is required. The 6430B/6440B models have some significant improvements compared to the older model:

  • Higher maximum frequency (500kHz for 6430B and 3MHz for 6440B)
  • Many more measurement frequencies (>1,000 steps)
  • Better measurement basic accuracy (0.02% from 0.05%)
  • Extra measurement parameters (Susceptance B and Reactance X)
  • Wider AC Drive range (1mV to 10Vrms)
  • Faster measurement speed
  • DC resistance
  • Multi Frequency Mode
  • Graph Mode

More detail information PDF Sheet download

7330 => 4310

Old ModelReplacement Model
7330
Automatic LCR Meter		4310
LCR Meter
AvailableMade between 1988 and 1996First made in 2009 and still in production
Basic Accuracy0.1%
Frequency Range100Hz, 1kHz, 10kHz20Hz to 100kHz

The recommended replacement for the 7330 is the 4310. The 4310 has some significant improvements compared to the older model:

  • Higher measurement frequency of 100kHz
  • Many more measurement frequencies – 557 steps
  • Extra measurement parameters Z Y θ B X Rdc
  • Wider AC Drive range - 10mV to 2Vrms
  • Faster measurement speed - 20ms
  • DC resistance as standard
  • More remote control interfaces – GPIB, RS232, USB and LAN
  • Larger and easier to read display
  • Autoranging AC input voltage

More detail information PDF Sheet download

B905 => 4310

Old ModelReplacement Model
B905
Automatic Automatic Precision Bridge		4310
LCR Meter
AvailableMade between 1979 and 1995First made in 2009 and still in production
Basic Accuracy0.05%0.1%
Frequency Range100Hz, 1kHz, 10kHz + 120Hz to 100kHz

The recommended replacement for the B905 is the 4310. If better basic accuracy is required then the 6430B model is suggested The 4310 has some significant improvements compared to the older model:

  • Higher measurement frequency of 100kHz
  • Many more measurement frequencies – 557 steps
  • Extra measurement parameters Z Y θ B X Rdc
  • Wider AC Drive range - 10mV to 2Vrms
  • Faster measurement speed - 20ms
  • DC resistance as standard
  • Larger and easier to read display
  • Autoranging AC input voltage
  • More accessories available to suit BNC connections

More detail information PDF Sheet download