Campbell CDM-A100 Series Instruction Manual page 59

Appendix D. Analog Voltage Measurement Range and Resolution
D-2
Measurements with
Input Reversal
1 2
f Range
N1
(Hz) (mV) RMS (µV)
±5000
60 ±1000
±200
±5000
50 ±1000
±200
±5000
30 ±1000
±200
±5000
25 ±1000
±200
±5000
15 ±1000
±200
±5000
10 ±1000
±200
±5000
5 ±1000
±200
±5000
2.5 ±1000
±200
1
First notch frequency
Range overhead of ≈6% on all ranges guarantees that full-scale values will not
2
cause overrange.
3
Effective resolution (ER) in bits is computed from ratio of full-scale range to RMS
noise.
Typical Effective Resolution
Single-Ended
Measurements or
Differential Differential
Measurements without
Input Reversal
bits RMS (µV)
0.769 23.7 1.140
0.162 23.6 0.261
0.056 22.9 0.113
0.732 23.8 1.112
0.161 23.7 0.254
0.053 22.9 0.111
0.612 24.1 0.901
0.131 24.0 0.217
0.042 23.3 0.099
0.580 24.1 0.858
0.123 24.0 0.204
0.038 23.4 0.095
0.502 24.4 0.734
0.107 24.2 0.177
0.031 23.7 0.088
0.499 24.4 0.683
0.108 24.2 0.161
0.029 23.8 0.082
0.472 24.4 0.617
0.102 24.3 0.151
0.024 24.1 0.082
0.447 24.5 0.564
0.095 24.4 0.144
0.020 24.3 0.077
3
bits
23.2
23.0
21.8
23.2
23.0
21.9
23.5
23.2
22.0
23.6
23.3
22.1
23.8
23.5
22.2
23.9
23.7
22.3
24.1
23.7
22.3
24.2
23.8
22.4