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AC7A/B User’s Guide
SPECIFICATIONS
Power Requirements
AC7A
AC7B
115 VAC ± 10 VAC @ 50-60 Hz
220 VAC ± 20 VAC @ 50-60 Hz
Power Consumption
0.1 amps @ 115 VAC
5 watts (dissipation)
Operating
Temperature Range
0° C to 70° C
0 to 95% humidity (non-condensing)
Optical Isolation
4,000 VAC between RS-232 and RS-422/485
RS-232 Interface
25-pin, DB-25 female connector
RS-422/485 Interface
Screw terminals or 9-pin, DB-9 female connector
Baud Rate
Up to 38,400 baud (115,200 baud in Rev. L and later)
RS-232 Distance
Up to 50 feet
RS-422/485 Distance
Up to 5,000 feet at 38,400 baud (3,000 feet at 115,200 baud)
Communications
RS-422/485 full duplex over two twisted pairs and a signal ground.
Additional twisted pairs for RTS and CTS. Also supports RS-485
2-wire mode. This requires user to build a custom RS-232 cable.
Indicators
Transmit, receive, RTS, CTS, and power.
DIMENSIONS
Figure 1-2: AC7A/B Card Dimensions
INTRODUCTION
