GE Optica, Operator'S Manual

Page: 33 / 150

January 2006
2-12 Installation
Serial Output
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.
The baud rate, format of the data, number of stop bits, number of data
bits, and parity can all be programmed using the menus.
Sensor Information
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
Table 2-1: Serial Output Connections
Optica Connector 25-Pin Device 9-Pin Device
Pin Connection Pin
Connection
Pin
Connection
2 (RX) 3 (TX) 3 (TX)
3 (TX) 2 (RX) 2 (RX)
4 (DTE) 6 (DSR) 6 (DSR)
5 (GND) 7 (GND) 5 (GND)
6 (DSR) 20 (DTE) 4 (DTE)
7 (RTS) 4 (CTS) 8 (CTS)
8 (CTS) 5 (RTS) 7 (RTS)