Agilent Technologies 4294A Specifications download pdf (Page 28)

Figure 2-11. Guarding techniques

2-4-8. Grounded device measurement capability

Grounded devices such as the input/output of an amplifier can be measured directly using the I-V

measurement method or the reflection coefficient measurement method (Figure 2-12 (a)). However,

it is difficult for an auto balancing bridge to measure low-grounded devices because the measure-

ment signal current bypasses the ammeter (Figure 2-12 (b)). Measurement is possible only when the

chassis ground is isolated from the DUT’s ground. (Note: The 4294A used with the 42941A or the

42942A will result in grounded measurements.)

2-14

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 125 126

No comments

Agilent Technologies 4294A Specifications Page 28