Appendix F. Other Campbell Scientific Products
541
F.4 Control Output Modules
F.4.1 Digital I/O (Control Port) Expansion
Digital I/O expansion modules expand the number of channels for reading or
outputting or 5-Vdc logic signals.
Table 136. Digital I/O Expansion Modules
Model Description
SDM-IO16 16-channel I/O expansion module
F.4.2 Continuous Analog Output (CAO) Modules
CAO modules enable the CR800 to output continuous, adjustable voltages that
may be required for strip charts and variable-control applications.
Table 137. Continuous Analog Output (CAO) Modules
Model Description
SDM-AO4A Four-channel, continuous analog voltage output
SDM-CVO4
Four-channel, continuous voltage and current analog
output
F.4.3 Relay Drivers
Relay drivers enable the CR800 to control large voltages.
Table 138. Relay Drivers
Model Description
A21REL-12 Four relays driven by four control ports
A6REL-12 Six relays driven by six control ports / manual override
LR4 Four-channel latching relay
SDM-CD8S Eight-channel dc relay controller
SDM-CD16AC 16-channel ac relay controller
SDM-CD16S 16-channel dc relay controller
SDM-CD16D 16-channel 0 or 5-Vdc output module
SW12V One-channel 12-Vdc control circuit
F.5 Dataloggers
Other Campbell Scientific datalogging devices can be used in networks with the
CR800. Data and control signals can pass from device to device with the CR800
acting as a master, peer, or slave. Dataloggers communicate in a network via
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