Agilent Technologies 4294A Specifications download pdf (Page 105)

Figure 5-40. External DC bias measurement setup

External DC voltage bias protection in 4TP configuration

If the measurement frequency is above 2 MHz or the type of DUT is not suitable for these external

bias fixtures, it is recommended to use the protective circuit shown in Figure 5-41. This circuit is

usable with bias voltage up to ± 200 V. To reduce the effects of this additional circuit, perform the

open/short compensation with no bias voltage applied.

Figure 5-41. External DC voltage bias protection circuit

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Agilent Technologies 4294A Specifications Page 105