Monitoring & Control
I/O Units

- DDA275 - 96 I/O lines, networked Data Sheet
- DDA265 - similar DDA275, with 16 inputs, 4 outputs. Rack mount or panel mount Data Sheet
- DDA249 network interface/controller with browser/telnet control Data Sheet
- DDA258 I/O unit with LNB power supplies and analog input, serial interface Data Sheet
- DDA260 Serial to SNMP converter with optional I/O and LNB power supplies Data Sheet
- DDA75 32 I/O lines, serial I/F, 1U
Peripherals & Interfaces
- DDA260 Serial to SNMP converter with optional I/O and LNB power supplies
- Network to serial and similar converters
Alarm/Receiving Attention Units
IF Level Monitor/alarm unit

- DDA241 8-channel with network and serial I/F
Waveguide Switch Control
Redundant Serial Link Management
- DDA209 Dial-in serial override
Protocol Emulations/conversions

- DDA217 Asynchronous serial Protocol converter
- DDA259 Asynchronous serial Protocol converter
Interface Converters
- DDA225 RS-232 to RS-422/485 converter/monitor