Connection Recommendations; Cables And Connections - Bartington Mag628 Operation Manual

4.2. Connection Recommendations

4.2.1. Cables and connections

Note: Cables are particularly prone to wear and damage if twisted, flexed beyond their
design limits, or subjected to excessive or repeated movement. It is recommended
that all cables are mounted securely in place. For further details refer to
Recommendations.
Mag628 and Mag669
Note: The sensor head cable is supplied without a connector. The customer must provide
the connection between the sensor head cable and the electronics assembly. Connection
details are provided in outline drawing DR2591, available from Bartington Instruments.
Mag629
Note: The cable between the sensor head and electronics module of the Mag629 is an
integral part of the sensor head and cannot be modified except at Bartington Instruments.
Note: To connect your Mag629 to a data acquisition unit via a recommended mating
connector, you will need to refer to outline drawing DR2591 for cable and connector details,
pinouts, etc.
Interface
The electronics assembly is plugged directly via PL1 and PL2 onto the customer's electronics
PCB (motherboard) using connectors and screws detailed in outline drawing DR2591.
Power supplies
Caution: Power is supplied by the customer as per the product brochure. Current is
specified in the product brochure. There is no protection on the electronics assembly;
the customer must ensure that the correct voltages are provided on the motherboard
connectors.
Signals and ground
The 0V (ground) for the unit is applied to PL1 4, 5 ,8 and 10 alongside the power supply.
Note: The ground voltages on PL2 pins 1 and 5 are the returns for the sensor excitation
and detection respectively; they are connected on the electronics PCB and should not be
connected to the 0V plane of the customer's motherboard.
PL2 pin 9 is used to detect if the sensor head is connected; it is connected to pin 5 through the
sensor head wiring. When sensor is connected, pin 9 is grounded and the test signal is cleared.
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