8.2.2 Pulse-Input Modules
Read More For more information see appendix Pulse-Input Modules List (p. 646).
Pulse-input expansion modules are available for switch-closure, state, pulse-count
and frequency measurements, and interval timing.
8.2.2.1 Low-Level Ac Input Modules — Overview
Related Topics:
• Low-Level Ac Input Modules — Overview (p. 367)
• Low-Level Ac Measurements — Details (p. 352)
• Pulse Input Modules — Lists (p. 646)
Low-level ac input modules increase the number of low-level ac signals a
CR1000 can monitor by converting low-level ac to high-frequency pulse.
8.2.3 Serial I/O Modules — Details
Read More For more information see appendix Serial I/O Modules List (p. 646).
Capturing input from intelligent serial-output devices can be challenging. Several
Campbell Scientific serial I/O modules are designed to facilitate reading and
parsing serial data. Campbell Scientific recommends consulting with an
application engineer when deciding which serial-input module is suited to a
particular application.
8.2.4 Terminal-Input Modules
Read More For more information see appendix Passive Signal Conditioners List
(p. 647).
Terminal Input Modules (TIMs) are devices that provide simple measurement-
support circuits in a convenient package. TIMs include voltage dividers for
cutting the output voltage of sensors to voltage levels compatible with the
CR1000, modules for completion of resistive bridges, and shunt modules for
measurement of analog-current sensors.
8.2.5 Vibrating-Wire Modules
Read More For complete information see appendix Vibrating-Wire Modules List
(p. 647).
Vibrating-wire modules interface vibrating-wire transducers to the CR1000.
8.2.6 Analog-Output Modules
Read More For more information see appendix Continuous-Analog-Output
(CAO) Modules List (p. 649).
The CR1000 can scale measured or processed values and transfer these values in
digital form to an analog output device. The analog output device performs a
367
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