HMR2300-D21-232-DEMO Honeywell Microelectronics & Precision Sensors, HMR2300-D21-232-DEMO Datasheet - Page 11

• Manufacturer Part Number: HMR2300-D21-232-DEMO
• Description: KIT DEVELOP MAGNETOMETER RS232
• Manufacturer: Honeywell Microelectronics & Precision Sensors

Specifications of HMR2300-D21-232-DEMO

• Rohs Status: RoHS non-compliant
• Sensor Type: Magnetic, Magnetometer
• Sensing Range: ±2g
• Interface: RS-232
• Sensitivity: 67 microgauss
• Voltage - Supply: 6.5 V ~ 15 V
• Embedded: No
• Utilized Ic / Part: HMR2300
• Silicon Manufacturer: Honeywell
• Application Sub Type: Accelerometer - Three-Axis
• Kit Application Type: Sensing - Motion / Vibration / Shock
• Silicon Core Number: HMR2300
• Kit Contents: Board
• Supply Voltage: 15V
• Other names: 342-1012; HMR2300-DEMO-232

HMR2300
APPLICATIONS PRECAUTIONS
Several precautions should be observed when using magnetometers in general:
NON-FERROUS MATERIALS
Materials that do not affect surrounding magnetic fields are: copper, brass, gold, aluminum, some stainless steels, silver,
tin, silicon, and most non-metals.
HANDLING PRECAUTIONS
The HMR2300 Smart Digital Magnetometer measures fields within 2 gauss in magnitude with better than 0.1 milli-gauss
resolution. Computer floppy disks (diskettes) store data with field strengths of approximately 10 gauss. This means that
the HMR2300 is many times more sensitive than common floppy disks. Please treat the magnetometer with at least the
same caution as your diskettes by avoiding motors, CRT video monitors, and magnets. Even though the loss of
performance is recoverable, these magnetic sources will interfere with measurements.
DEMONSTRATION PCB MODULE KIT
The HMR2300 Demonstration Kit includes additional hardware and Windows software to form a development kit for with
the smart digital magnetometer. This kit includes the HMR2300 PCB and enclosure, serial port cable with attached AC
adapter power supply, and demo software plus documentation on a compact disk (CD). The figure below shows the
schematic of the serial port cable with integral AC adapter. There will be three rotary switches on the AC adapter. These
should be pointed towards the positive (+) polarity, +9 volts, and 120 or 240 VAC; depending your domestic supply of
power.
www.honeywell.com
•
•
•
•
The presence of ferrous materials, such as nickel, iron, steel, and cobalt near the magnetometer will create
disturbances in the earth’s magnetic field that will distort the X, Y, and Z field measurements.
The presence of the earth’s magnetic field must be taken into account when measuring other magnetic fields.
The variance of the earth’s magnetic field must be accounted for in different parts of the world. Differences in the
earth’s field are quite dramatic between North America, South America and the Equator region.
Perming effects on the HMR2300 circuit board need to be taken into account. If the HMR2300 is exposed to
fields greater than 10 gauss, then it is recommended that the enclosure/circuit boards be degaussed for highest
sensitivity and resolution. A possible result of perming is a high zero-field output indication that exceeds
specification limits. Degaussing wands are readily available from local electronics tool suppliers and are
inexpensive. Severe field offset values could result if not degaussed.
2
2
3
3
5
5
9
9
D9-F
D9-F
GRY
GRY
AC adapter
AC adapter
ground
ground
+9vdc
+9vdc
data
data
data
data
D9-F
D9-F
BLK
BLK
2
2
3
3
5
5
9
9
11