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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDC-GP21 датащи(PDF) 67 Page - ams AG |
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TDC-GP21 датащи(HTML) 67 Page - ams AG |
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67 / 91 page  Ultrasonic-Flow-Converter TDC-GP21 4-22 acam messelectronic gmbh - Friedrich-List-Str.4 - 76297 Stutensee - Germany - www.acam.de The four data are found in registers 0 to 3. From Res_3/RES_1 and RES_4/RES_2 the microcontroller can calculate the ratio Rtemp/Rref. By means of a look-up table it can calculate the temperature for the special type of sensor in use. Configuration Register 0, bit 15, ANZ_FAKE sets the number of dummy measurements at the beginning of a temperature measurement. This is necessary to overcome mechanical effects of the load capacitor. ANZ_FAKE = 0 2 dummy measurements ANZ_FAKE = 1 7 dummy measurements Register 0, bit 16, T CYCLE sets the cycle time for the temperature measurement. TCYCLE = 0 128 µs cycle time @ 4MHz TCYCLE = 1 512 µs cycle time @ 4MHz Register 0, bit 17, ANZ_PORT sets the number of ports that will be used. ANZ_PORT = 0 2 ports = 1 sensor ANZ_PORT = 1 4 ports = 2 sensors Register 6, bit 11, TEMP_PORTDIR sets the order of the port measurements TEMP_PORTDIR = 0 PT1 > PT2 > PT3 > PT4 TEMP_PORTDIR = 1 PT4 > PT3 > PT2 > PT1 Register 6, bit 15, HZ60 sets the base frequency for the delay between the up and down measurements for commands Start_TOF_Restart and Start_Temp_Restart. HZ60 = 0 50 Hz base HZ60 = 1 60 Hz base Register 6, bits 18, 19, CYCLE_TEMP, selects the factor timer for triggering the second temperature measurement in multiples of 50/60Hz. CYCLE_TEMP = 0 1 = 1 1.5 Member of the ams Group |
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