Shield Connections (All Enclosures) - Mantracourt T24 User Manual

Shield Connections (All Enclosures)

We recommend the following rules to determine whether there should be a connection between the transmitter
module shield and the sensor chassis or cable:
1. If the sensor is remote to the transmitter module and the screen of the signal cable is NOT connected to the
sensor chassis then the cable screen should be connected to the transmitter module shield connection.
2. If the sensor is remote to the transmitter module and the screen of the signal cable IS connected to the sensor
chassis then the cable screen should be NOT connected to the transmitter module shield connection.
3. If the transmitter module is integral to the sensor or mounted very close and the module is mounted on a metal
chassis then the answer to whether the transmitter module shield connection should be connected to the metal
chassis is a matter of experimentation. This connection must be as short as possible. The T24 Toolkit can be used
to chart the signal levels and tests should be undertaken to determine whether there is a better radio signal with
or without the shield/chassis connection. The quality of the measured reading should also be looked at. In cases
where the shield/chassis connection makes no difference to the radio signal or the reading quality then the
connection should be made.
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T24 Telemetry User Manual