Campbell CR800 Series - Time Constants (Τ); Low-Level Ac Pules Input Ranges; FIGURE 88: Amplitude Reduction of Pulse Count Waveform (before and after 1 Μs Μs Time-Constant Filter)

Section 8. Operation
381
Time Constants (τ)
Measurement τ
P terminal low-level ac mode
TABLE: Low-Level Ac Amplitude and Maximum
Measured Frequency (p. 381)
P terminal high-frequency mode 1.2
P terminal switch closure mode 3300
C terminal high-frequency mode 0.025
C terminal switch closure mode 0.025
Low-Level Ac Pules Input Ranges
Sine Wave Input
(mV RMS)
Maximum Frequency
(Hz)
20 20
200 200
2000 10,000
5000 20,000
FIGURE 88: Amplitude reduction of pulse count waveform (before and
after 1 µs µs time-constant filter)