英之科儀器更換指南

以下是 1960 年以來 LCR 產品的總表，並建議了合適的替代品。

4200 Series => 4300 Series

Specifications	Old Model	Replacement Model
Model	4200 Series	4300 Series
Available	Made between 1983 and 2013	First made in 2009 and still in production
Basic Accuracy	All 4200 Series models: 0.1%, except for the 4225: 0.25%	0.1%
Frequency Range	42(10, 25): 100Hz, 1kHz, 10kHz 4250: 100Hz, 1kHz, 10kHz, 100kHz 4230: 100Hz - 200kHz 4265: 50Hz - 100kHz 4270: 50Hz - 1MHz	20Hz to 100kHz

The recommended replacement for models in the 4200 Series is the 4300 Series Model. The 4300 Series Models offers significant improvements over the older models, including:

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 a standard feature
Larger and easier-to-read display
Autoranging AC input voltage

For applications requiring a measurement frequency greater than 100kHz, three additional 4300 models are available:

4320: 20Hz to 200kHz
4350: 50Hz to 500kHz
43100: 20Hz to 1MHz

4210, 4225 4250

4230

4265, 4270

6425 => 6430B

Specifications	Old Model	Replacement Model
Model	6425	6430B
Available	Made between 1984 and 1998	First made in 1999 and still in production
Basic Accuracy	0.05%	0.02%
Frequency Range	20Hz to 300kHz	20Hz 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

6425

7330 => 4310

Specifications	Old Model	Replacement Model
Model	7330	4310
Available	Made between 1988 and 1996	First made in 2009 and still in production
Basic Accuracy	0.1%	0.1%
Frequency Range	100Hz, 1kHz, 10kHz	20Hz 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
Auto-ranging AC input voltaged

7330

B905 => 4310

Specifications	Old Model	Replacement Model
Model	B905	4310
Available	Made between 1979 and 1995	First made in 2009 and still in production
Basic Accuracy	0.05%	0.1%
Frequency Range	100Hz, 1kHz, 10kHz + 1	20Hz 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

B905