BARTINGTON INSTRUMENTS
Page 7 of 13 OM2808/3
4.2.2. Pre-Installation Tests
Mag628 and Mag669
Prior to the assembly of the system the connection to the motherboard must be checked as
follows:
1. Check the power supply voltages to be ± 15V (± 5%) using a voltmeter.
2. Ensure each sensor head lead is connected to the correct pin on the electronics assembly;
see outline drawing DR2591 for details. Wiring and connectors are supplied and fitted by
the customer.
Mag629
Prior to the installation of the system, the magnetometer, cable and power supply must be fully
tested to ensure correct function as follows:
Caution:
Take care to avoid bending, or otherwise damaging the contacts whilst conducting
the tests.
1. Test the cables for continuity (using an electrical continuity tester or ohmmeter).
a. Test the cables end to end at the connectors to ensure the correct pins have been
allocated to the conductors and there are no open or high resistance circuits.
Note:
Cable resistance will vary; refer to the product brochure for the expected values.
b. Test the cables at the connectors to ensure there are no short circuits between the
conductors.
2. Check the power supply output voltage using a voltmeter. Refer to the product brochure
for the expected values.
3. Check no dust or obstructions have fallen into the cable connector or its socket and clean
if necessary using an air duster.
4. Connect the sensor head and integrated cable to the electronics module. The two
connector sockets on the electronics module are different to ensure correct connection.
The connector can only be installed in one orientation. Hand-tighten the securing collar.
5. Connect the magnetometer to the cable connector.
6. Connect the power supply to the other cable connector.
7. Switch on the power supply and confirm that the monitor line output is high.
8. For each of the three (X, Y and Z) axes in turn:
