Campbell CR850, Operator'S Manual, Page: 539 / 566

Appendix F. Other Campbell Scientific Products
539
F.2.2 Pulse / Frequency Input Expansion Modules
These modules expand and enhance pulse- and frequency-input capacity.
Table 128. Pulse / Frequency Input-Expansion Modules
Model Description
SDM-INT8 Eight-channel interval timer
SDM-SW8A Eight-channel, switch-closure module
LLAC4 Four-channel, low-level ac module
F.2.3 Serial Input Expansion Peripherals
Serial i/o peripherals expand and enhance input capability and condition serial
signals.
Table 129. Serial Input Expansion Modules
Model Description
SDM-SIO1 One-channel i/o expansion module
SDM-SIO4 Four-channel i/o expansion module
SDM-IO16 16-channel i/o expansion module
F.2.4 Vibrating-Wire Input Modules
Vibrating-wire input modules improve the measurement of vibrating wire sensors.
Table 130. Vibrating-Wire Input Modules
Model Description
CDM-VW300 Two-channel dynamic vibrating wire analyzer
CDM-VW305 Eight-channel dynamic vibrating wire analyzer
AVW200 Series Two-channel vibrating wire spectrum analyzers
F.2.5 Passive Signal Conditioners
Signal conditioners modify the output of a sensor to be compatible with the
CR800.
F.2.5.1 Resistive Bridge TIM Modules
Table 131. Resistive Bridge TIM Modules
Model Description
4WFB120 120-- Ω , four-wire, full-bridge TIM module
4WFB350 350- Ω , four-wire, full-bridge TIM module
4WFBS1K 1-k Ω , four-wire, full-bridge TIM module
3WHB10K 10-k Ω , three-wire, half-bridge TIM module