Circutor QNA-303, Руководство пользователя

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ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY QNA-303 -- Page 29
7.3.- Connections of communication cables
U (L1-L2-L3)
Alimentación
RS 232/485
Antena Radio / GSM
The QNA-303 analyzer is equipped with a RS communication port to set the
communication to the PC. The connection arrangement will depend on the
communication mode to be used.
Several communication modes are available according to the QNA-303 model:
GSM 485 232
QNA-303 GSM X X
QNA-303 232/485 X X
QNA-303 units that require a communication cable are only those which
will communicate via the RS-232 or RS-485 serial port to the PC. A simultaneous
communication via both ports will not be available at any case.
The protocol to be used in QNA-303 RS-232/RS-485 units will depend on the
cable connection arrangement.
RS 232/485
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