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Dear Customer,
Thank you for choosing a Hanna Instruments product. This manual will provide you with
the necessary information for correct operation. Please read it carefully before using the
instrument. If you need additional technical information, do not hesitate to e-mail us at
tech@hannainst.com. This instrument is in compliance with the
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully to make sure that no
damage has occurred during shipping. If there is any damage, notify your Dealer.
Note: Save all packing material until you are sure that the instrument functions correctly.
All defective items must be returned in their original packaging together with the
supplied accessories.
OPERATIONAL GUIDE
• Connect the RS485 interface cable to A and B terminals.
• Connect Tip and Ring signals of the telephone line (pins 3 and 4 of RJ11 jack, i.e. the
2 central wires of the telephone cable) to the "PHONE" terminal of the unit (see
drawing); then plug the cable to the telephone line. The modem module is Tip/Ring
polarity insensitive.
• Connect the supplied power adapter wires to the proper terminals (black & white wire
to the negative pin "-"; black wire to the positive pin "+") and protect the device from
electrostatic discharges by grounding the unit through the PE terminal.
• Power the unit through the 12 VDC adapter. The "ON" LED lights up.
• The unit is also provided with two LED indicators for signaling the operating status: a
blinking "RD" green LED is related to data receiving, while the "TD" yellow LED flashes
during data transmission.
Note: The modem should be installed only by qualified personnel.
FUNCTIONAL DESCRIPTION
directives.
Inside view
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