Campbell Scientific AVW200-series Vibrating Wire Interfaces - Manual (Page 76)

Appendix C. Antennas, Antenna Cables, and Surge Protectors for the AVW206, AVW211, and AVW216
• When the antenna cable length exceeds 10 feet
• When use of COAX RPSMA would result in too much signal loss
• When the interface will be used in an environment susceptible to lightning
or electro-static buildup
C.3.2 Antenna Surge Protector Kit
The Surge Protector Kit for the RF401 series radios includes the following:
• Polyphaser protector
• 18 inches of COAX RPSMA to connect ‘tail end’ of surge protector to
RF401
• Ground wire lead
• Screw and grommet to secure ground wire and polyphaser to backplate of
enclosure
The surge protector has female type N connectors on both ends; one for
connection to the COAX NTN-L cable and the other for connection to the 18
inch length of COAX RPSMA cable included in the kit. The COAX RPSMA
cable is an LMR195 type that terminates in a type N Male connector on the
‘antenna end’ and a Reverse Polarity SMA (RPSMA) connector on the RF401
end.
C.4 Part 15 FCC Compliance Warning
Changes or modifications to the AVW206, AVW211, or AVW216 not
expressly approved by Campbell Scientific, Inc. could void the user’s authority
to operate this product.
Note: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
C-6