User manual
Chapter 4: Appendix A - Specifications 4-1
Echo User's Manual, ver. 0.00
Appendix A: Specifications
Operating Environment
Storage temperature: -60 ° C to 100 ° C
Operating temperature: 5 ° C to 65 ° C
Relative humidity: 5 - 90% no condensing
Air movement: no requirement
Altitude: 15,000 feet (5000 metres)
Power Requirements
Typical @ 20°C; +20%, -5% on the current (DC) value
Echo 8 ports RS-485
+5 VDC +/- 5% @ 125mA (no driver loads)
@ 445mA (all drivers loaded)
Echo 8 ports RS-232
+5 VDC +/- 5% @ 100 mA
+12 VDC +/- 10% @ 5 mA (no driver loads)
@ 100 mA (all drivers loaded)
-12 VDC +/- 10% @ 4 mA (no driver loads)
@100 mA (all drivers loaded)
PC Bus Interface
PC interrupt is jumper selectable, (3, 4, 5, 7, 10, 11, 12, or
15)
Base address for I/O ports is DIP switch selectable
One half length ISA 8 bit or 16 bit slot
Communications
16C654 UARTs communication controllers
Programmable baud rate generator - up to 115K baud on all
ports
Control Signals
RS-232 RxD, TxD, RTS, CTS, DTR, DCD,
DSR, RI
RS-422/485 RX±, TX±, RTS±, CTS±
Dimensions
Length: 16.4 cm
Height: 10.6 cm
Connectors/Interface
DB-9 or DB-25 male cable or connector box