Model

424

423

422C

421C

420C

419

SMU

Channel
No

4 chs

4 chs

4 chs

4 chs

4 chs

4 chs

Voltage
Range

±100V

±100V

±100V

±100V

±40V

±10V

Voltage
Resolutoin
/Accuracy

70uV
/ 2mV

70uV
/ 2mV

70uV
/ 2mV

70uV
/ 2mV

1mV
/ 2mV

1mV
/ 2mV

Current
Range

±100mA

±100mA

±100mA

±100mA

±100mA

±100mA

Current
Resolution
/Accuracy

1fA / 40 fA

1fA / 40 fA

0.1pA / 3pA

0.1pA / 3pA

1nA / 2nA

1nA / 2nA

VSU

Channel
No

2 chs

2 chs

2 chs

2 chs

2 chs

No

Voltage
Output
Range

±20V

±20V

±20V

±20V

±20V

No

Resolution
/Accuracy

0.7mV / 2mV

0.7mV / 2mV

0.7mV / 2mV

0.7mV / 2mV

0.7mV / 2mV

No

VMU

Channel
No

2 chs

2 chs

2 chs

2 chs

2 chs

No

Voltage
Measurement
Range

±20V

±20V

±20V

±20V

±20V

No

Resolution
/ Accuracy

0.1mV / 1mV

0.1mV / 1mV

0.1mV / 1mV

0.1mV / 1mV

0.1mV / 1mV

No

PC Included

Yes

No

Yes

No

No

No