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Supplemental information, Settling time, Measurement circuit protection – Atec Agilent-E4980A User Manual

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Settling time

Table 50. Test frequency setting time

Test frequency setting time

Test frequency (Fm)

5 ms

Fm ≥ 1 kHz

12 ms

1 kHz > Fm ≥ 250 Hz

22 ms

250 Hz > Fm ≥ 60 Hz

42 ms

60 Hz > Fm

Table 51. Test signal voltage setting time

Test signal voltage setting time

Test frequency (Fm)

11 ms

Fm ≥ 1 kHz

18 ms

1 kHz > Fm ≥ 250 Hz

26 ms

250 Hz > Fm ≥ 60 Hz

48 ms

60 Hz > Fm

Switching of the impedance range is as follows:

≤ 5 ms/ range switching

Measurement circuit protection

The maximum discharge withstand voltage, where the internal circuit remains protected
if a charged capacitor is connected to the UNKNOWN terminal, is given below.

Table 52. Maximum discharge withstand voltage

Maximum discharge withstand voltage Range of capacitance value C of DUT

1000 V

C < 2 µF

√ 2/C V

2 µF ≤ C

Figure 8. Maximum discharge withstand voltage

Supplemental
Information

Note

Discharge capacitors before connecting them
to the UNKNOWN terminal or a test fixture to
avoid damages to the instrument.

0

200

400

600

800

1000

1200

1.E–15

1.E–13

1.E–11

1.E–09

1.E–07

1.E–05

1.E–03

Voltage [V]

Capacitance [F]