công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
HEDT-5145103 bảng dữ liệu(PDF) 2 Page - Agilent(Hewlett-Packard) |
|
HEDT-5145103 bảng dữ liệu(HTML) 2 Page - Agilent(Hewlett-Packard) |
2 / 10 page 2 the adjacent pair of detectors. The photodiode outputs are then fed through the signal processing circuitry resulting in A, A, B, B, I and I. Comparators receive these signals and produce the final outputs for channels A and B. Due to this integrated phasing technique, the digital output of channel A is in quadrature with that of channel B (90 degrees out of phase). The output of the comparator for I and I is sent to the index processing circuitry along with the outputs of channels A and B. The final output of channel I is an index pulse Po which is a one state width (nominally 90 electrical degrees), high true index pulse. This pulse is coincident with the low states of channels A and B. Block Diagram The HEDT-9040 and 9140 have two channel quadrature outputs plus a third channel index output. This index output is a 90 electrical degree high true index pulse. The HEDT-9040 is designed for codewheels which have an optical radius of 23.36 mm (0.920 in.). The HEDT-9140 is designed for codewheels which have an optical radius of 11.00 mm (0.433 in.). The quadrature signals and the index pulse are accessed through five 0.025 inch square pins located on 0.1 inch centers. Resolutions between 360 and 1024 counts per revolution are available. Consult local Agilent sales representatives for other resolutions. Applications The HEDT-9040 and 9140 provide high temperature motion control detection at a low cost, making them suitable for automo- tive and industrial 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. Theory of Operation The HEDT-9040 and 9104 are emitter/detector modules. Coupled with a codewheel, these modules translate the rotary motion of a shaft into a three- channel digital output. As seen in the block diagram, the module contains a single Light Emitting Diode (LED) as its light source. The light is collimated into a parallel beam by means of a single lens located directly over the LED. Opposite the emitter is the integrated detector circuit. This IC consists of multiple sets of photodetectors and the signal processing circuitry necessary to produce the digital waveforms. The codewheel rotates between the emitter and detector, causing the light beam to be interrupted by the pattern of spaces and bars on the codewheel. The photodiodes which detect these interruptions are arranged in a pattern that corresponds to the radius and design of the codewheel. These detectors are also spaced such that a light period on one pair of detectors corresponds to a dark period on |
Số phần tương tự - HEDT-5145103 |
|
Mô tả tương tự - HEDT-5145103 |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |