4200A-SCS Parameter Analyzer

5. Ultra-fast Pulse Measure Unit

The two-channel 4225-PMU provides the combination of ultra-fast voltage waveform generation with fast simultaneous voltage and

current measurements.

4225-PMU General Information

Output connectors

Four SMA (f) and two HDMI

Suppled cables

SMA (m) to SMA (m), 2 m, 4 each (CA-404B)

SMA to SSMC Y-cable, 15 cm (6 in.), 2 each (4200-PRB-C)

Optional accessory

4225-RPM single-channel, remote preamplifier/switch module

PMU Current Measurement

10 V Range

40 V Range

Current measure ranges

10 mA

200 mA

800 mA

Recommended minimum

160 ns

70 ns

770 ns

Recommended minimum

20 ns

20 ns

100 ns

Recommended minimum

20 ns

20 ns

100 ns

15 µA

50 µA

200 µA

100 ns

30 ns

500 ns

Notes

1. All typical values measured with an open circuit.

2. Using default measure window of 75% to 90% of pulse top. Recommended minimum pulse width = (Settling Time) / 75%.

3. Recommended rise/fall time to minimize overshoot.

4. RMS noise measured over the Recommended Minimum Measure Window for the given voltage or current range, typical.

5. Time necessary for the signal to settle to the DC accuracy level. (Example: 10 mA settling time on the PMU 10 V range is defined when the

signal is within 1.25% of the final value. This calculation: Accuracy = 0.25% + 100 µA = 0.25% + (100 µA/10 mA) = 0.25% + 1% = 1.25%).

6. 10 mA noise specification is different if RPM is used. See table below

10V Range

40 V Range

Current measure ranges

100 nA

1 µA

10 µA

100 µA

1 mA

100 µA

10 mA

Recommended minimum

134 µs

20.4 µs

8.36 µs

1.04 µs

370 ns

160 ns

6.4 µs

770 ns

Recommended minimum

10 µs

1.64 µs

1 µs

130 ns

40 ns

20 ns

1 µs

100 ns

Recommended minimum

1 µs

360 ns

360 ns

40 ns

30 ns

20 ns

1 µs

100 ns

200 pA

2 nA

5 nA

50 nA

300 nA

1.5 µA

75 nA

5 µA

100 µs

15 µs

6 µs

750 ns

250 ns

100 ns

4 µs

500 ns

Notes

1. All typical values measured with an open circuit.

2. Using default measure window of 75% to 90% of pulse top. Recommended minimum pulse width = (Settling Time) / 75%.

3. Recommended rise/fall time to minimize overshoot.

4. RMS noise measured over the Recommended Minimum Measure Window for the given voltage or current range, typical.

5. Time necessary for the signal to settle to the DC accuracy level. (Example: 10 mA settling time on the PMU 10 V range is defined when the

signal is within 1.25% of the final value. This calculation: Accuracy = 0.25% + 100 µA = 0.25% + (100 µA/10 mA) = 0.25% + 1% = 1.25%).

6. 10 mA noise specification is different without RPM. See table above.