The Model 534D Sensor is a tri-axial vector magnetometer system with a high-speed digital interface that can transmit XYZ magnetic field values at up to 140 times per second. The Model 534D device contains a microprocessor and a three channel 16-bit analog-to-digital converter. The system also contains a temperature sensor.
Read MoreThe Model 534D Sensor is a tri-axial vector magnetometer system with a high-speed digital interface that can transmit XYZ magnetic field values at up to 140 times per second. The Model 534D device contains a microprocessor and a three channel 16-bit analog-to-digital converter. The system also contains a temperature sensor.
The system microprocessor and A-to-D subsystem:
- converts the sensor analog outputs to digital form
- calibrate the sensor scale, offset and alignment
- implement serial communications between the system and an external computer
An ASCII character command language facilitates communica- tion with the Model 534D. An autosend data mode is included in the Model 534D software. When this mode is active, data is repeatedly sent out the serial port after power is applied to the system.
System Calibration and Connection
The Model 534D magnetometers are calibrated by mounting the system in a precision holding fixture, placing this in a 3-axis Helmholtz coil, and systematically applying known magnetic fields to the sensor.
The Model 534D’s temperature sensor provides accurate corrections to the sensor data before data is transmitted.
The Model 534D System communicates over a bi-directional RS232 or TTL (optional) serial interface. The RS232 serial communications interface to the 534D is provided by the RS232- in and RS232-out lines. An external PC communicates with the Model 534D on the serial-in line and replies from the 534D are transmitted out on the serial-out line. The serial-in and serial-out lines are normally set to operate at 9600 baud with one stop bit and no parity. The user, however, can change the baud rate by setting bits in the system EEROM.
