Appendix A: Interface 1000 Specifications--Floating Operation
Appendix A - 1
Appendix A: Interface 1000 Specifications
All specifications are at an ambient temperature of 22°C, with the Interface 1000 powered using the
external power supply shipped with the unit, a standard shielded 60 cm cell cable, and the cell enclosed in
a Faraday shield. All specifications are after software calibration.
A numbered note qualifies many of the specifications. Many of these notes describe the method used to
measure a specification. The notes are found at the end of this appendix.
All specifications are subject to change without notice.
Control Amplifier
Compliance Voltage Min
±22 volts Note 1
Output Current Min ±1000 mA Note 2
Unity Gain Bandwidth Typ 1100, 320, 39, 4, 0.4 kHz Notes 3, 4
Slew Rate Typ 10, 4.5, 0.6, 0.06, 0.006 V/µs Notes 3, 4
Differential Electrometer
Max Input Voltage Min ±12 volts Note 5
Input Current Max 25 pA Note 6
Input Resistance
Differential (between inputs)
Common Mode (input to ground)
Typ
20
TΩ Note 5
Input Capacitance
Differential (between inputs)
Common Mode (input to ground)
Typ
0.3
pf Note 5
Bandwidth (–3 dB) Min 15 MHz Note 8
CMMR
DC to 10 kHz
Min
86
Note 9
Voltage Measurement
A/D Full-scale Ranges Typ ±12.0, ±3.0 Volts
Notes 5, 10
Resolution Typ 400, 100, 10, 1 µV/bit
Zero Offset Error Max 1 mV Note 11
Gain Error Max 0.3 % Note 11
Offset Range Typ ±3.2768, ±13.1072 Volts Note 12
Post-Offset Gain Typ 1×, 10×, 100×
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