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Connections
T24-PAe, T24-PAi
Power
Attach power supply wiring to the module as shown below:
+ 3V Supply
0V Supply
Connect to a 3 Volt power supply or batteries.
This module is not reverse polarity protected!
The maximum voltage is 3.6 V!
For battery information please refer to
Appendix D – Battery Selection
Sensor
Pulse input connected as follows:
The 'Pulse in' input incorporates a pull-up resistor enabling a 'volt-free' contact to be used as the input source.
This can take the form of a normally open or normally closed switch or relay contacts.
A normally open contact connected between 'Pulse in' and 'GND' will generate a negative edge when it operates.
In this case set 'Edge Type' to 'Falling' in the 'Input/Output Configuration' page of the T24 Toolkit.
'Edge Type' should be set to 'Rising' to accommodate a normally closed contact when it opens.
The T24-PA can also be used with a repetitive sine, square or pulse wave signal source such as a signal generator
or RPM sensor. The amplitude should be between 0.8 V and 6 V peak.
A maximum of 40 mA can be drawn from the '5V' supply pin to power a pulse generating sensor. By setting a
value in 'Startup Time' in the T24 Toolkit 'Advanced Settings' page the time taken for the sensor to start up and
become stable after a 'sleep' period can be accounted for by delaying the sampling until this period has elapsed.
Reset Count is a 'volt-free' contact input. This can be used to reset the count input to zero. To activate connect
'Reset Count' to GND.
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Mantracourt Electronics Limited
T24 Telemetry User Manual
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