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SPP-01 数据表(PDF) 2 Page - Frequency Devices, Inc. |
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SPP-01 数据表(HTML) 2 Page - Frequency Devices, Inc. |
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2 / 4 page ![]() SPP-01 Series 2” X 2” Precision Dual Channel, Differential Input Hardware Solution Signal Processing Platform 2 25 Locust St., Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX:978/521-1839 e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com Typical Program Selection Port Protocol Data Format • Logic “0” 0VDC Min – 2VDC Max • Logic “1” 3.5VDC Min – 5Vdc Max Bit Weighting (Binary Coded) D0 LSB D7 or D8 MSB Program Selection: 256 or 512 _____________________________________ 1. The program selection data word bus consists of D0 to D7 for 8 - bit programming (D8 = 0 Channel 1 and logic 1 for Channel 2) and D0 to D8 for 9-bit programming. 2. D9 channel 1or 2 select. Low is channel 1 and is logic 0. Channel 2 is a logic 1 and is high at 5 volts. Suggested 8 - Bit programming table MSB --- --- --- --- --- --- LSB Bit Weight 2 7 D7 2 6 D6 2 5 D5 2 4 D4 2 3 D3 2 2 D2 2 1 D1 2 0 D0 Program address 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 1 1 4 0 0 0 0 0 1 1 1 8 0 0 0 0 1 1 1 1 16 0 0 0 1 1 1 1 1 32 0 0 1 1 1 1 1 1 64 0 1 1 1 1 1 1 1 128 1 1 1 1 1 1 1 1 256 Suggested 9 - Bit programming table MSB --- --- --- --- --- --- --- LSB Bit Weight 2 8 D8 2 7 D7 2 6 D6 2 5 D5 2 4 D4 2 3 D3 2 2 D2 2 1 D1 2 0 D0 Program address 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 0 1 1 4 0 0 0 0 0 0 1 1 1 8 0 0 0 0 0 1 1 1 1 16 0 0 0 0 1 1 1 1 1 32 0 0 0 1 1 1 1 1 1 64 0 0 1 1 1 1 1 1 1 128 0 1 1 1 1 1 1 1 1 256 1 1 1 1 1 1 1 1 1 512 |
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