Specifications

CI-1 and CI-8 Communications Interface
1-2
Figure 1-2: CI-1 Communications Interface
Housing
Dimensions
4in X 5in X 2in (10.16cm X 12.70cm X 5.08cm)
Operating Temperature 32° 120°F (0° 50°C)
Humidity 0 to 95% non-condensing
Fuses Two .5-amp fuses for battery input, F1 and F2.
RS-232 DTE Port 25-pin RS-232 connection to host computer system.
Power Input Connection to power supply or AC transformer. Terminals
labeled AUX AC, CT and AC; 18 VAC, 80 mA nominal.
Battery Backup Input Connection to backup battery; two 12-volt batteries rated
at 2 to 6 amp-hours. Terminals labeled12V-, C and 12V+.
20mA Loop
Connector
Four-terminal port for connection to ACUs. Terminals
labeled RX+, RX-, TX+ and TX-. Use unshielded, dual,
twisted pair wire, minimum 24 AWG.