HEDT-9100

The HEDT-9000 and 9100 provide sophisticated motion detection at a low cost, at temperatures to 125°C, making them ideal for high volume automotive applications.

Note: Agilent Technologies encoders are not recommended for use in safety critical applications. Eg. ABS braking systems, power steering, life support systems and critical care medical equipment. Please contact sales representative if more clarification is needed.

Storage Temperature, TS .................................................................. -40°C to 125°C
Operating Temperature, TA ............................................................... -40°C to 125°C
Supply Voltage, VCC ................................................................................. -0.5 V to 7 V
Output Voltage, VO .................................................................................. -0.5 V to VCC
Output Current per Channel, Iout ....................................................... -1.0 mA to 5 mA
Pulse Width (P): The number of electrical degrees that an output is high during 1 cycle. This value is nominally 180°e or 1/2 cycle. Pulse Width Error (DP): The deviation, in electrical degrees of the pulse width from its ideal value of 180°e.

State Width (S): The number of electrical degrees between a transition in the output of channel A and the neighboring transition in the output of channel B. There are 4 states per cycle, each nominally 90°e.

State Width Error (DS): The deviation, in electrical degrees, of each state width from its ideal value of 90°e.

Phase (f ): The number of electrical degrees between the center of the high state of channel A and the center of the high state of channel B. This value is nominally 90°e for quadrature output. Phase Error (Df): The deviation of the phase from its ideal value of 90°e.

Direction of Rotation: When the codewheel rotates in the direction of the arrow on top of the module, channel A will lead channel B. If the codewheel rotates in the opposite direction, channel B will lead channel A. Optical Radius (Rop): The distance from the codewheel's center of rotation to the optical center (O.C.) of the encoder module.

The HEDT-9000 and the HEDT-9100 series are high performance, low cost, optical incremental encoder modules that operate to 125°C. When used with a codewheel, these modules detect rotary position. The HEDT-9000 and the HEDT-9100 series  modules consist of a lensed (LED) source and a detector IC enclosed in a small C-shaped plastic package. Due to a highly collimated light source and unique photodetector array, these modules are extremely tolerant to mounting misalignment.