Campbell CDM-A100 Series, Instruction Manual

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CDM-A100 Series
9
FIGURE 5-2. Power and CPI ports view
5.1.1 Analog Input
Analog sensors output a continuous voltage or current signal that varies with
the phenomena measured. Sensors compatible with the CDM-A100 output a
voltage. Current output can be made compatible with a resistive shunt.
Sensor connection is to H/L terminals configurable for differential (DIFF),
single-ended (SE), or period-average inputs. For example, differential channel
1 is comprised of terminals 1H and 1L, with 1H as high and 1L as low.
•
Maximum input voltage range: ±5000 mV
•
Measurement resolution range: 0.020 to 14.756 µV
RMS
5.1.1.1 Single-Ended Measurements
A single-ended measurement measures the difference in voltage between the
terminal configured for single-ended input and the reference ground. Single-
ended terminals are labeled in blue. The CDM-A108 has 16 SE terminals, and
the CDM-A116 has 32. For example, single-ended channel 1 is comprised of
terminals 1 and
⏚
.
CPI Port LED
Indicators
Power In
CPI Ports