AT Commands
Table 2-1. OMEGA CDMA Modem AC Power Supply Connector
Power Cable
Color Designation
Modem Terminal
Live
Black
1 (left pin)
Ground
Green
2 (center pin)
Neutral
White
3 (right pin)
Setting the OMEGA DIP Switch
The OMEGA CDMA Modem provides an 8-position configuration DIP switch that selects
various operating parameters. Review the switch settings in Table 2-2 and change any to suit
your requirements.
Table 2-2. OMEGA CDMA Modem Switch Settings
Switch
Description
ON
OFF
1
2
Baud Rate
Selects the OMEGA CDMA Modem baud rate. Set these
switches to match the speed of the attached DTE. See Table 2-3
for supported baud rates.
3
Parity
Async character: 8-E-1
Async character: 8-N-1
4
Sleep Mode (Reserved)
Set to OFF (default)
5
Interface Status or RSSI
LEDs display RS-232
signals (default)
LEDs display RSSI
6
Hardware Flow Control*
Enabled
Disabled (default)
7
DTR Dial
Enabled
Disabled (default)
8
RS-232/RS-485 Interface
RS-485
RS-232 (default)
9
2/4 wire RS-485
2-W Half-duplex
4-W Full-duplex
10
Reserved
Factory testing
Set to OFF (default)
* If your RTU or meter only supports TXD and RXD signals, set switch 6 OFF to disable hardware
flow control. In this mode, the OMEGA CDMA Modem ignores the Request-To-Send and other
input control signals.
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