Appendix E: Auxiliary Electrometer Specifications; Dc Voltage Measurement; Input Impedance; Common Mode Rejection - Gamry Instruments Reference 3000 Operator's Manual

Appendix E: Auxiliary Electrometer Specifications

Unless otherwise mentioned, all specifications apply at 22C, zero common-mode voltage versus Ground FA,
input voltages with Z < 10 Ω, and all channel inputs (other than those of the channel under test) at zero volts
out
versus Ground FA. All measurements are made with the Aux Channel A/D with normal Framework calibration.

DC Voltage Measurement

Offset Voltage
Temp Drift
Ranges
Resolution
Gain Error
Offset Range
Offset Resolution
Input Current

Input Impedance

Common Mode
Differential

Common Mode Rejection

CMR Range
CMRR

Crosstalk

Low Frequency
High Frequency

Other AC Specifications

Bandwidth
Phase Shift
Noise
Auxiliary Electrometer Specifications
< 500 µV
< 10 µV/C
50 mV, 500 mV, 5V
1.666 µV, 16.66 µV,
166.6 µV
< 0.3%
5.12 V
166.6 µV/bit
< 10 pA
>30 G in parallel with
<100 pF
>100 G in parallel with
<40 pF
−36 V < Vin < 36 V
> 94 dB
> 86 dB
< −90 dB
< −80 dB
>2 MHz
<1
<1
<4 µV
pp
1/2
<10 nV/Hz
20C to 25C
from 0C to 45C
Full Scale
per bit
zero volts input
−36 V < Vcm < 36 V
−5 V < Vdiff < 5 V
at 3 Hz
at 100 kHz
DC to 10 kHz
10 kHz to 100 kHz
-3 dB
DC to 20 kHz
20 kHz to 100 kHz
0.1 Hz to 10 Hz
at 1 kHz
97
at all gain ranges
Differential Input Voltage
on all ranges
on all ranges
offset of differential signal
measure by voltage
versus floating ground
measured between the
two inputs
versus floating ground