User's Manual

FIREMASTER IV " MillenniumThree " radio shooting system User’s manual
Nmax =−=
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From the above calculations, it will be possible to connect IN SERIES up to 7
igniters of this type with a 100% warranty of ignitions. These calculations are
very prudential and theoretical
: in practice it would be possible to connect in
series a lot more igniters (giving up some safety margin).
In any case, when more igniters are to be connected in series, IT IS
MANDATORY USING DEVICES EACH OTHER IDENTICAL: not
only of the same brand and model, but possibly also coming from the
SAME PRODUCTION LOT.
THE PARALLEL OR, WHORSE THE MIXED SERIES-PARALLEL
CONNECTIONS, MUST BE AVOIDED. ALSO THE SERIES
CONNECTIONS SHOULD BE REDUCED TO THE MINIMUM
POSSIBLE.
- The line connectors must be clean and free from oxidation (this will
increase the total line resistance).
- Make sure the connection wire has a sufficient section in order to grant a
good contact to the binding post. Eventually bend several time the terminal
part of the wire.
- Make sure the terminal part of the wire inserted in the binding post is
completely free from the insulating sleeve (many misfires are due to this
inadvertence!)
- Make sure the unprotected parts of the wire, eventually coming out of the
connector, don't contact any other metal parts of the Unit (antenna,
connectors of other lines, etc.).
4.8.2 Coaxial cable connection
Should extreme conditions require it, the FIREMASTER IV System can be still
used with the RADIO LINK ( "RADIO" mode), but
with all units connected
each other with coaxial cable: any type of antenna will be in this case
REMOVED.
Should the normal RADIO connection be forbidden or impractical, and the
cable connection becomes mandatory, using this type of connection, several
advantages are obtained with respect a wire connection using the RS-485 port:
- All the bi-directional functions, typical of the FIREMASTER system,
remain available (the RS-485 interface allows the communication for the
FIRE operations only and NOT for the controls).
- The interconnection of all Units is simply made using sections of coaxial
cable of any length and UHF "T" adaptors without need to respect a
specific connection order.
- All command signals are sent ON CABLE and cannot be longer interfered
nor causing interferences to other sensitive devices. The data transmission
integrity is 100% proof!
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