Tactical Technologies TX-500 Operating Instructions Manual - page 3
WHAT IS ACTUALLY TRANSMITTED
Whenever a ‘MINDA’ transmitter operates, the actual digital data message transmitted contains
all of the following pieces of information, repeated a number of times:
< I am a ‘MINDA’ transmitter >
and < My Family Identity is ‘xxx’ >
and < I am Unit I.D. ‘y’>
and < My alarm status is ‘red/green’ >
and < My battery status is ‘OK/low’ >
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
LEDs. If they do not match, the entire message is ignored.
UNIT IDENTITIES
A MINDA TX-500 Intelligent Transmitter can have each of its four possible Unit Identities (1, 2, 3
or 4) configured to signal in different ways and with different timings to suit particular operational
needs.
The user can easily alter the pre-programmed Unit Identity Code (shown on the label on the back
of the case) whenever required.
CHANGING THE UNIT IDENTITY
To change the Unit Identity of a MINDA TX-500 transmitter, carefully open the case as if you
were installing a battery, and locate the small double switch adjacent to the large 18-pin chip. Set
the two switches in accordance with the table shown below in order to determine the initial ‘start-
up’ Unit Identity of the transmitter.
Unit I.D.
Switch 1
Switch 2
1
ON
ON
2
OFF
ON
3
ON
OFF
4
OFF
OFF
The Unit Identity of the TX-500 transmitter can also be temporarily changed by simultaneously
holding down both push buttons for about 2 seconds. When this is done the yellow LED will blink
an appropriate number of times to show the new identity it has assumed.
Each time the two buttons are pressed together the sequence will cycle through all four possible
identities (ie. 1,2,3,4,1,2,3...) but note that if the power supply is interrupted by switching off or
changing the battery the transmitter will revert to its start-up Unit I.D. once power is re-applied.
Please note:
This user option can, if required, be modified in format or completely inhibited by suitably re-
programming the unit.
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. If
necessary, change the Unit Identity to the one you require.
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.