User's Manual

If the first two pieces of data in the above message exactly match the information programmed
into the ‘MINDA’ receiver, then the rest of the information will be decoded and displayed on the
receiver's LEDs. If they do not match, the entire message is ignored.
UNIT IDENTITY
A MINDA TX-400 Keyfob Transmitter can have one of four possible Unit Identities (1, 2, 3 or 4)
pre-programmed by the factory.
The user can not alter the pre-programmed Unit Identity Code (shown on the label on the back of
the case) whenever required.
Note
:
Check that you know the Unit Identity (1,2,3,or 4) of the transmitter that you intend to use
by sending a test signal to a ‘MINDA’ receiver and noting which of its LEDs illuminates.
ANTENNA
The transmitter's antenna is the external small black cord.
Never
attempt to shorten, fold up or
modify the transmitter antenna since such action will seriously degrade the range of the MINDA
system. When using the key-fob transmitter, hold the case so that the short cord antenna points
away from you, and then press the appropriate button for at least one second. The small red LED
should illuminate.
FAMILY IDENTITY CODE
Each MINDA system, when supplied to a customer, will have already been programmed at time
of manufacture with a common default ‘Family Identity Code’ (hexadecimal 94) enabling it to be
used with any other of the standard MINDA products. The Family Identity Code for a particular
family of MINDA units can easily be re-programmed by returning all of the equipment to Tactical
Technologies Inc. The TX-400 transmitter can by programmed with any one of a possible 255
Family Identity Codes.
For a MINDA system to operate with, and recognize up to four independent transmitters, the
Family Identity Code of the receiver and transmitter(s) all have to match
AND
each of the
transmitters must have a different Unit Identity (1,2,3 or 4).
A microprocessor controlled MINDA receiver will only respond to signals from those transmitters
sending the same Family Identity Code that it has been pre-programmed to accept. This
capability minimizes the risk of interference between similar systems that happen to be operating
within radio range of one another. It is
absolutely vital
therefore, to ensure that all transmitter
and receiver units that have to operate together are programmed with the same Family Identity
Code. Signals received from any ‘alien’ transmitter operating within range will not be decoded
and, instead, treated by the receiver as radio interference on the channel.
LOW BATTERY WARNING
When the battery voltage of a MINDA TX-400 transmitter drops to a level where battery
replacement is desirable, each subsequent transmission made will be ‘tagged’ to indicate this fact
to the receiving end. When a MINDA receiver recognizes a ‘tagged’ signal from a MINDA
transmitter, the LED indicator appropriate to that transmitter’s Unit Identity will start to ‘blink out’
briefly about once per second.
BATTERY LIFE
The TX-400, when equipped with a fresh battery, should operate for more than 5000 activations
of the transmitter.