Service manual
50
3.8 Auxiliar channel information
The rear left part of the instrument is where the communications cables are connected. There are two connections, the
COM1 and the COM2.
The COM1 is the main connection from the analyser to the computer. This connection should be always present to
analyser run propertly.
there are two connection types:
A - Cable type USB
B - Cable type RS-232
Only connect one cable type.
The labeled connector COM2 is the auxiliar connector.
This connector is used to communicate with a second serial port in the computer.The function of this cable is to monitor
the internal states of the analyser.
To show all this information, the user should execute the program: windows HyperTerminal and configure with the
following parameters:
Baud Rate: 38400
Número de bits: 8
Stop bits: 1
Paridad: none
Onces is configured and connected the cable, switch on the analyser. In this moment will appear in the HyperTerminal
screen information about the analysers mode and the different executes states. In the initializate mode, the analyser do
an internal checking for each element, if someone has any error then in the screen will show the element that fails. The
following lines shows an exemple of the instructions during an initialization, (this information could change with the
improvements of the firmware) :
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