Lake Shore Cryotronics 121, Руководство пользователя

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1.3 Model 121 Specifications
1.3.1 Output
Type: Bipolar, DC current source
Current ranges: 13 fixed ranges of 100 nA, 300 nA, 1 µA, 3 µA, 10 µA, 30
µA, 100 µA, 300 µA, 1 mA, 3 mA, 10 mA, 30 mA, 100 mA, and a user-pro-
grammable range
Accuracy: 0.05% on 10 µA range, 0.5% on 100 nA and 300 nA ranges,
0.1% on all other ranges
Compliance voltage: ±11 V up to 30 mA, ±10 V up to 100 mA
AC current ripple: < 0.1% on 100 nA and 300 nA ranges; < 0.01% on all
other ranges in a properly shielded system
Current ripple frequency: Dominated by line frequency and its
harmonics
Temperature coefficient: 0.03% of range/°C for the 100 nA range,
0.01% of range/°C for all other ranges
Line regulation: < 0.01% change in output for 5% change in the DC input
voltage
Load regulation: < 0.01% change in output current over the full-scale
range
Stability (24 h): 0.05% on 100 nA range, 0.01% per day on all other fixed
ranges
Settling time: <300 ms for full-scale change in current; <100 ms for 10%
change in current
Connector: Detachable terminal block
Maximum load: 300 k

1.3.2 User setting
1.3.2.1 Programming
Operation: Output current settable via computer interface
Resolution: 3 significant digits
Accuracy: 0.5% for currents <300 nA, 0.25% for all other currents
Maximum current: 100 mA
Minimum current: 100 nA