Voltage Measurements - Specifications - Campbell CDM-A100 Series Instruction Manual

CDM-A100 Series
6.1 Voltage Measurements – Specifications
12
Voltage measurements use a 24-bit Analog-to-Digital (A-to-D) converter. One
channel at a time is measured in numeric succession. Differential and single-
ended channels can be mixed.
Terminals
Differential Configuration
CDM-A108:
CDM-A116:
Single-Ended Configuration
CDM-A108:
CDM-A116:
Range:
1
Accuracy
0 to 40 °C:
–40 to 70 °C:
–55 to 85 °C:
Resolution:
Speed:
Input Resistance:
Input Limits:
Maximum Input Voltage:
DC Common-Mode Rejection: >120 dB with input reversal
Normal-Mode Rejection:
Input Current:
1
Accuracy specification does not include sensor error or measurement noise.
2
See TABLE 6-1, Analog Voltage Measurement Accuracy Offsets
DIFF 1H/1L – 8H/8L
DIFF 1H/1L – 16H/16L
SE 1 – 16
SE 1 – 32
See TABLE D-1, Analog Voltage
Measurement Range and Resolution
±(0.04% of Reading + Offset
±(0.06% of Reading + Offset
±(0.08% of Reading + Offset
See TABLE D-1, Analog Voltage
Measurement Range and Resolution
See TABLE 6-2, Analog Voltage
Measurement Speed
(p. 13)
See also Section 8.2, Fast Measurements
>20 GΩ
±5 Vdc
±20 Vdc
≥86 dB without input reversal
>70 dB at 60 Hz
±3 nA typical at 25 °C
±12 nA maximum at 50 °C
±100 nA maximum at 85 °C
(p. 13)
(p. D-1)
2
)
2
)
2
)
(p. D-1)
(p. 25)