HMR4007
SENSOR PRODUCTS
PIN CONFIGURATION
Pin Number
Pin Name
Description
Digital Interface
1 | RTS | Serial Clock Output |
2 | Data_Out | Serial Data Output |
3 | Data_In | Serial Data Input |
4 | CTS | Serial Clock Input |
5 | Power | Unregulated Power Input (+6 to +28 VDC) (see note 1) |
6 | GND | Power and Signal Ground |
Analog Interface |
|
|
1 | Power | Unregulated Power Input (+6 to +28 VDC) (see note 2) |
2 | Analog Out | 0 - 2.5 VDC analog output |
3 | Position Valid | TTL level (0 = position invalid, 1 = position valid) |
4 | GND | Power and Signal Ground |
Jumper Block #1 |
|
|
Note 1 | Analog Output port selected as power source | |
Note 1 | Serial Communications port selected as power source |
Note 1: The board contains three interface connectors for digital and/or analog communications. Power is supplied to the board through any one of these connectors and is selected by jumper block #1. All of the ground connections on all three ports are common to the circuit ground and are not affected by the jumper position. Only ONE of the three positions on JP1 should be shorted at a time. Shorting more than one may result in excessive power supply currents and board damage.
CIRCUIT DESCRIPTION
The HMR4007 Linear Position Sensor circuit board includes all of the basic sensors and electronics to provide a digital indication of position of a target magnet. The HMR4007 starts with an array of seven Honeywell HMC1501 single axis magnetoresistive (MR) sensors to determine the field geometry and direction of a target magnet attached to the moving part of a device under test. These sensors are supplied power by a constant voltage source, and the use of an array of sensors helps to maintain accuracy over temperature and
The HMR4007 uses an
Solid State Electronics Center • www.magneticsensors.com • (800)