Campbell CDM-A100 Series, Instruction Manual

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CDM-A100 Series
15
Current Excitation
Range: ±2.5 mA
Accuracy
1
0 to 40 °C: ±(0.05% of s 2.5 µA)
–40 to 70 °C: ±(0.08% of s 2.5 µA)
–55 to 85 °C: ±(0.1% of s 2.5 µA)
Resolution: 638 nA
Compliance Voltage
2
: ±5000 mV
1
Note that ratiometric accuracy, rather than absolute accuracy, determines overall
measurement accuracy of ratiometric-resistance measurements.
2
Voltage limits within which current excitation setting will meet specified accuracy
limits.
6.4 Period Averaging – Specifications
Terminals
CDM-A108: SE 1 – 16
CDM-A116: SE 1 – 32
Range: See TABLE 6-3 , Period Average Ranges
Accuracy: ±(0.01% of r resolution)
Resolution: 130 ns ÷ number of cycles
TABLE 6-3. Period Average Ranges
Voltage Gain
Minimum
Peak-to-Peak
Signal
1,2
(mV)
Minimum Pulse
Width
(µs)
Maximum
Frequency
(kHz)
1 500 2.4 200
3.8 50 8 50
19 10 50 8
67 2 80 5
1
With signal centered around CDM-A100 ground.
2
Maximum period average signal amplitude = 20 V peak-to-peak.
6.5 Voltage Output – Specifications
6.5.1 Continuous 12 Vdc
Terminals
CDM-A108: 12V
CDM-A116: 12V
Voltage Output
1
: 12.5 ± 0.5 Vdc