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Smart Digital Magnetometer
HMR2300
The Honeywell HMR2300 is a three-axis smart digital magnetometer to
detect the strength and direction of an incident magnetic field. The three of
Honeywell’s magneto-resistive sensors are oriented in orthogonal directions
to measure the X, Y and Z vector components of a magnetic field. These
sensor outputs are converted to 16-bit digital values using an internal delta-
sigma A/D converter. An onboard EEPROM stores the magnetometer’s
configuration for consistent operation. The data output is serial full-duplex
RS-232 or half-duplex RS-485 with 9600 or 19,200 data rates.
Applications include: Attitude Reference, Compassing & Navigation,
Traffic and Vehicle Detection, Anomaly Detection, Laboratory
Instrumentation and Security Systems.
A RS-232 development kit version is available that includes a windows
compatible demo program, interface cable, AC adapter, and carrying case.
Honeywell continues to maintain product excellence and performance by introducing innovative solid-state magnetic
sensor solutions. These are highly reliable, top performance products that are delivered when promised. Honeywell’s
magnetic sensor solutions provide real solutions you can count on.
FEATURES & BENEFITS
High Accuracy Over 1 gauss, <0.5% Full Scale
Range of 2 gauss, <70 gauss Resolution
Three Axis (X, Y, Z) Digital Outputs
10 to 154 Samples Per Second, Selectable
RS-232 or RS-485 Serial Data Interfaces
PCB or Aluminum Enclosure Options
6-15 volt DC Unregulated Power Supply Interface
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HMR2300
SPECIFICATIONS
Characteristics
Conditions
Power Supply
Supply Voltage
Pin 9 referenced to Pin 5 (Ground)
Supply Current
Vsupply = 15V, with S/R = On
Temperature
Operating
Ambient
Storage
Ambient, Unbiased
Magnetic Field
Range
Full Scale (FS), Total Field Applied
Resolution
Applied Field to Change Output
Accuracy
RSS of All Errors @+25°C
1 gauss
2 gauss
Linearity Error
Best Fit Straight Line @+25°C
1 gauss
2 gauss
Hysterisis Error
Repeatability Error
3 Sweeps Across 2 gauss @+25°C
3 Sweeps Across 2 gauss @+25°C
Gain Error
Applied Field for Zero Reading
Offset Error
Applied Field for Zero Reading
Temperature
Effect
Coefficient of Gain
Power Supply Effect
Mechanical
From +6 to +15V with 1 gauss
Applied Field
Weight
PCB Only
PCB and Non-Flanged Enclosure
PCB and Flanged Enclosure
Vibration
Operating,
5 to 10Hz for 2 Hours
10Hz to 2kHz for 30 Minutes
Digital I/O Timing
(See Timing Diagrams)
TRESP
TDELAY
*dd Commands (dd = Device ID)
*ddP
*ddR, *ddS, *ddT
*ddC
*ddQ
*99 Commands
*99Q
*dd Commands (dd = Device ID)
*99 Commands
TBYTE
9600
19,200
TSTARTUP
Power Applied to End of Start-Up
Message
2
Min Typ Max Units
6.5 15 Volts
27 35 mA
-40 +85 °C
-55 125 °C
-2 +2 gauss
67 micro-gauss
0.01 0.52 %FS
12
0.1
1
0.01
0.05
0.05
0.01
-600
114
150
0.5
2
0.02
0.10
0.10
0.03
%FS
%FS
%FS
%FS
%FS
ppm/°C
ppm/V
28
94
98
10
2.0
1.9 2 2.2
3 3.2
6 6.2
40 60
2+(ddx80) 2+Typ
2+(ddx40) 2+Typ
2+(ddx120) 2+Typ
39 40 41
ddx40
2+Typ
1.04
0.52
50 80
grams
mm
g
msec
msec
msec
msec
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HMR2300
Characteristics
Digital I/O Timing
TRESP
TDELAY
TBYTE
TSTARTUP
Conditions
(See Timing Diagrams)
*dd Commands (dd = Device ID)
*ddP
*ddR, *ddS, *ddT
*ddC
*ddQ
*99 Commands
*99Q
*dd Commands (dd = Device ID)
*99 Commands
9600
19,200
Power Applied to End of Start-Up
Message
BLOCK DIAGRAM
Min Typ Max
1.9 2 2.2
3 3.2
6 6.2
40 60
2+(ddx80) 2+Typ
2+(ddx40) 2+Typ
2+(ddx120) 2+Typ
39 40 41
ddx40
2+Typ
1.04
0.52
50 80
HMC1002
HMC2003
HMC1001
Pwr
Cond
ADC
C
V+
Gnd
TX
RX
EEPROM
Units
msec
msec
msec
msec
RS-232 COMMUNICATIONS (Timing is Not to Scale)
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HMR2300
RS-485 COMMUNICATIONS (Timing is Not to Scale)
GLOBAL ADDRESS (*99) DELAY (Timing is Not to Scale)
PIN CONFIGURATION
Pin Number
1
2
3
4
5
6
7
8
9
Pin Name
NC
TD
RD
NC
GND
NC
NC
NC
V+
Description
No Connection
Transmit Data, RS-485 (B+)
Receive Data, RS-485 (A-)
No Connection
Power and Signal Ground
No User Connection (factory X offset strap +)
No User Connection (factory Y offset strap +)
No User Connection (factory Z offset strap +)
Unregulated Power Input (+6 to +15 VDC)
PCB DIMENSIONS AND PINOUT (Connector Not Shown for Clarity)
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HMR2300
CASE DIMENSIONS
RS-232 UNBALANCED I/O INTERCONNECTS
HOST PC
TD
D
RD
R
GD
HMR2300
RD
R
TD
D
GD
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