Appendix
MultiExact Gas Analyser
A1.2 Connecting the analyser to a PC
The analyser can be directly connected to the 9-way 'D' type serial port (usually
designated "COM1" or "COM2") on your PC. Use a compatible 9-way 'D Null Modem'
cable (with a recommended maximum length of 3 metres), with female-to-female
connectors. To prevent the cable coming loose at the analyser ensure the connector
screws are tightened (if supplied on the cable).
If your PC only has USB serial ports, use a commercially available 9-way 'D' type
serial to USB converter to connect the PC.
A1.3 Configuring the RS232 serial output parameters
You must configure the analyser serial output parameters to suit the requirements of
the PC (or other device) which you have connected to the serial output port on the
analyser. The output parameters which you can configure are listed below:
Parameter
Valid settings
Period
1 to 999 seconds.
Baud rate
2400, 4800, 9600, 19200 and 38400 are all supported.
Parity
None, odd parity, or even parity.
Data bits
7 or 8.
Stop bits
1 or 2.
To configure the parameters:
1.
Select
➞
Settings
➞
Comms Parameters.
2.
If necessary, change the displayed
parameter using the edit method
described in Section 4.10.
Figure A2 – The serial output
period screen
3.
For each of the other configurable parameters (see above):
•
Use the
and
soft keys to select the corresponding parameter
screen.
•
Change the parameter as necessary: use the
and
soft keys to
highlight the required option, or edit the data as described in Section 4.10.
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