OPT-1
RS-232 (5-volt) Option
0115982
1/15/98
1. General Description
1. General Description
1. General Description
1. General Description
1. General Description
This option transmits serial RS-232 (5-volt) data on the white/green wire (pin 7) of the OPT-1.
The serial data transmitted is the same as that shown on the digital display when displaying tempera-
ture and pressure. The white/green wire may be connected to a PC through Electronics International’s
8 Channel Multiplexer Unit (MUX-8). If the transmitted signal is inverted, it may be connected
directly to a PC. The serial data is transmitted in a comma delimited format, suitable for importing
into most spreadsheet and data base programs.
2. Instrument Operation
2. Instrument Operation
2. Instrument Operation
2. Instrument Operation
2. Instrument Operation
The RS-232 (5-volt) option does not affect the operation of the OPT-1. See the OPT-1 Operating
and Installation Instructions for OPT-1 operating information.
3.
3.
3.
3.
3.
T
T
T
T
Transmit Specifications
ransmit Specifications
ransmit Specifications
ransmit Specifications
ransmit Specifications
* Baud Rate:
9600
* Data Bits:
8
* Start Bit:
1 (Logic Low)
* Stop Bit:
1 (Logic High 5-volts)
* Parity:
None
* Transmit Rate: 1/4 sec.
4.
4.
4.
4.
4.
T
T
T
T
Transmit F
ransmit F
ransmit F
ransmit F
ransmit Format
ormat
ormat
ormat
ormat
The OPT-1 transmits the following record:
OPT,LLLL,RRRR,CrLf
OPT
Instrument identifier.
,
A comma separates data fields.
LLLL
Left Channel Data as shown on the digital display (0000 to 1999).
Input signals below 5 read 0000.
RRRR
Right Channel Data as shown on the digital display (0000 to 1999).
Cr
Carriage return (0Dh)
Lf
Line feed (0Ah)
5. Hook-Up
5. Hook-Up
5. Hook-Up
5. Hook-Up
5. Hook-Up
Place the white/green wire (included in the kit) into pin 7 from the back of the OPT-1 cable
harness. RS-232 (5-volt) serial data is transmitted on this wire.
