Serial Output; Sensor Information - GE Optica Operator's Manual

January 2006

Serial Output

Sensor Information

2-12
The Serial Output connector is located at the lower left of the rear
panel of the bench-mount unit, and the bottom panel of the wall-
mount unit. The output provides RS-232C serial communications
between the unit and a terminal or a PC running in terminal emulation
mode.
The connector is a standard 9-pin D connector. For connection to
another serial device, the cable is wired as shown below. For a basic
interface without handshaking, only pins 2, 3 and 5 (RX, TX and
GND) on the Optica connector are needed. Pin connections are given
for both 25-pin and 9-pin devices.
Table 2-1: Serial Output Connections
Optica Connector
Pin Connection
2 (RX)
3 (TX)
4 (DTE)
5 (GND)
6 (DSR)
7 (RTS)
8 (CTS)
The baud rate, format of the data, number of stop bits, number of data
bits, and parity can all be programmed using the menus.
GE Infrastructure Sensing produces a variety of sensors compatible
with the Optica, ranging from one to five stages of thermoelectric
cooling. A comparison chart listing specifications of each sensor is
given in Appendix E. The following sections provide information on
installing the following GE Infrastructure Sensing dew point sensors:
•
Model 1111H — Single-stage sensor
•
Model 1211H — Two-stage sensor; for high pressure and temp.
•
Model D-2 — Two-stage sensor
•
Model SIM-12H — Two-stage heated sensor
•
Model 1311DR — Four-stage heated sensor
•
Model 1311XR — Five-stage water-cooled sensor
25-Pin Device
Pin Pin
Connection
3 (TX) 3
2 (RX) 2
6 (DSR) 6
7 (GND) 5
20 (DTE) 4
4 (CTS) 8
5 (RTS) 7
9-Pin Device
Connection
(TX)
(RX)
(DSR)
(GND)
(DTE)
(CTS)
(RTS)
Installation