IAGRAM 4.2 T SPI ................................12 IMING OF 4.2.1 Format of Message ...............................13 4.2.2 Example ................................13 4.2.3 How to modify Emissivity? (How to write Emissivity into EEPROM)..............14 5 INTERFACE DEMO BOARD: HUB-D.........................15 6 INTERFACE PROGRAM FOR PC ..........................16 http://www.ZyTemp.com REV. 07/20/2004...
Limited Warranty: This data sheet contains information specific to products manufactured at the time of its publication, Contents herein do not constitute a warranty. Trademark Acknowledgements: All trademarks are the property of their respective owners. http://www.ZyTemp.com REV. 07/20/2004...
) is set in the space near the optical system to detect the fast change of the ambient temperature. The signal processing section receives the signals from these temperature sensors to calculate the target surface temperature by a mathematical algorithm. http://www.ZyTemp.com REV. 07/20/2004...
For example, the errors from environmental changes of older IRTs can reach 1.6degC, requiring up to 30 minutes to stabilize, while ZyTemp's TNm error differential is only 0.7degC, needing only 7 minutes to restabilize.
When the Distance is 20 inch, then the measurement spot size is inch. In other words, the FOV(Field of View) is 4.8 x 2 = 9.6 degree Beware the Vignette Good Design, No Vignette Fig 3. Good Design Field of View http://www.ZyTemp.com REV. 07/20/2004...
However, for the purposes and applications of the infrared thermometer user, a comprehensive table showing the emissivity at corresponding temperatures of various surfaces and objects is displayed. Please visit ZyTemp’s website: http://www.zytemp.com/tutorial/emissivity.asp to check the emissivity of the materials of interested. http://www.ZyTemp.com...
TN9 Infrared Thermometer Module 3.4 Pin Assignment of TN0; TN9 Warning: The Dimension in this drawing is for reference only. For actual dimension, please download from http://www.ZyTemp.com/products/download/ExtDrawing.asp V: Vdd G: GND D: Data (Serial Data) C: Clock (Serial Clock) A: Action Pin ( pull low to measure, floating while to Write Data into the IRT) Note: TN0;...
Fig 6. Typical Diagram TN9 to TTL Interface (MCU) V:Vcc D:Data C:Clock (2KHz) G:GND A:ActionKey (When Pull Low, the device will measure Tbb continuousely.) Note: Data Pin is High when there is no data out, Time Out > 2ms http://www.ZyTemp.com REV. 07/20/2004...
66h “f” the item code of Ambient tempurature Item 12h ( “1” and “2” are ASCII char) Data C3h ( “C” and “3” are ASCII char) Real Tempurature Value [Hex2Dec(12C3h)]/16-273.15= 27.03 ℃ CheckSum 66h+12h+C3h=3Bh (Only Low Byte) 0Dh ’Carriage Return’ means End of Message http://www.ZyTemp.com REV. 07/20/2004...
TN9 will forget the data, and you need to re-write again. c. TN9 have no response as above That means TN9 don't get full 40 clocks. Please check the clock & data which control by External CPU. Especially, please make sure the T1 timing is right. http://www.ZyTemp.com REV. 07/20/2004...
TN9 Infrared Thermometer Module 6 Interface Program for PC Program: TNmDB001.exe a Free version for demostration can be download at http://www.zytemp.com/download/default.asp Running under a DOS window (in MS Windows environment) Must be used accompanied with HUB-D This program will show: Tbb (Tobj) ;...
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