Agilent Technologies 4294A Specifications download pdf (Page 18)

Table 2-1. Common impedance measurement methods

Note: Agilent Technologies currently offers no instruments for the bridge method and the resonant method shaded in the above table.

2-4

Advantages Disadvantages Applicable

Typical Agilent

Common

frequency products application

range

Bridge

High accuracy (0.1%typ.). Need to be manually DC to None Standard

method

Wide frequency balanced. 300 MHz lab

coverage by using Narrow frequency

different types of coverage with a

bridges. single instrument.

Low cost.

Resonant Good Q accuracy up to Need to be tuned to 10 kHz to None High Q

method high Q. resonance. 70 MHz device

Low impedance measurement.

measurement accuracy.

I-V Grounded device Operating frequency 10 kHz to None Grounded

method measurement. range is limited by 100 MHz device

Suitable to probe transformer used in measurement.

type test needs. probe.

RF I-V High accuracy (1% Operating frequency 1 MHz to 4287A RF

method typ.) and wide range is limited by 3 GHz 4395A+43961A component

impedance range at high transformer used in 4396B+43961A measurement.

frequencies. test head. E4991A

Network High frequency Recalibration required 300 kHz 8753E RF

analysis Range. when the measurement and 4395A component

method Good accuracy when frequency is changed. above measurement.

the unknown Narrow impedance

impedance is close to measurement range.

the characteristic

impedance

Auto

Wide frequency Higher frequency ranges 20 Hz to E4980A Generic

balancing

coverage from LF to HF. not available. 110 MHz 4284A component

bridge

High accuracy over 4294A measurement

method

a wide impedance 4294A+42941A

measurement range. (*1) (*1) Grounded

Grounded device 4294A+42942A device

measurement (*1) measurement

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 125 126

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Agilent Technologies 4294A Specifications Page 18

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