Campbell CR300 series - High-Frequency Input; Low-Level AC Input; Period Averaging - Specifications

CR300-Series Datalogger
46
7.5.2 High-Frequency Input
Terminals: SE terminals 1-4
P_LL
P_SW
C1-C2
Maximum Input Frequency
SE 1-4: 35 kHz
P_LL: 20 kHz
P_SW: 35 kHz
C1-C2: 3 kHz
7.5.3 Low-Level AC Input
Terminal: P_LL
Range: See TABLE 7-5, Low-Level AC
Ranges
(p. 46)
Input Hysteresis: 12 mV at 1 Hz
TABLE 7-5. Low-Level AC Ranges
1
Sine Wave Input
(mV
RMS
)
Range
(Hz)
20 1.0 to 20
200 0.5 to 200
2000 0.3 to 10,000
5000 0.3 to 20,000
1
AC coupling removes AC offsets up to ±0.05 V
7.6 Period Averaging – Specifications
Up to four analog inputs may be configured for period averaging.
Terminals: SE terminals 1-4
Frequency Range: 5 Hz to 200 kHz
Voltage Range: 0 to 3.3 V
Accuracy: ±(0.01% of reading + resolution)
Resolution: 13 ns ÷ number of cycles
Minimum Pulse Width: 2.5 µs
High Threshold: 2.5 V