Technical data

The serial Data Interface can be configured through the software to
operate in half and full duplex operating modes. The serial line Data
Rate should also be under the software control, which provides the
automatic data rate detection.
RTS, CTS, DSR, DTR and CD signals should be reserved on-board for
future support of full RS-232 hardware handshake operation. This
will provide the support of the wide range of different standard and
none-standard, user specific, Data Link interfaces.
The serial interface is protected against static discharge (15 kV) and
shorts with power and signal circuits.
1.2.3 A
LARM/SENSE INTERFACE
The Alarm/Sense Interface provides two external sense CMOS/TTL
input lines and two TTL output lines for connection to external Alarm
and Security systems.
The TTL output lines can be configured to indicate the following
alarms:
Connector
Pin #
Signal
Name
Signal Description Signal
Type
1 DCD Data Carrier Detect O
2 DSR Data Set Ready O
3 RTS Request To Send I
4 TX Data from PC Serial Port to Modem I
5 MP TX Maintenance Port Serial Data In I
6 TTLIN2 TTL In 2 I
7
TTLIN1 TTL In 1 I
8 PWRIN DC Power between 9 and 24 VDC DC
9 DTR Data Terminal Ready I
10 CTS Clear To Send O
11 RX Data from Modem to PC Serial Port O
12 MP_RX Maintenance Port Serial Data Out O
13 TTLOUT2 TTL Out 2 O
14 TTLOUT1 TTL Out 1 O
15 GND DC Power and Signal to Ground I
Table 1-3: Standard External Connector Pin Layout
Page 1-6
AlphaWave Users Manual 3/21/2005
Chapter 1