Electronic Components Datasheet Search

Delete All
ON OFF
 ALLDATASHEET.COM Part No.DescriptionMarking X

## HP203B Datasheet(PDF) 12 Page - List of Unclassifed Manufacturers

 Part No. HP203B Description PRECISION BAROMETER AND ALTIMETER SENSOR Download 18 Pages Scroll/Zoom 100% Manufacturer ETC2 [List of Unclassifed Manufacturers] Direct Link Logo

## HP203B Datasheet(HTML) 12 Page - List of Unclassifed Manufacturers

 12 / 18 pageDataSheetHP203BPlocal has unit in mbar, Aoffset has unit in meterPlocal1000100110021003Aoffset‐111.18‐102.73‐94.29‐85.85Plocal1004100510061007Aoffset‐77.43‐69.02‐60.62‐52.23Plocal1008100910101011Aoffset‐43.84‐35.47‐27.11‐18.76Plocal1012101310141015Aoffset‐10.41‐2.086.2414.56Plocal1016101710181019Aoffset22.8631.1539.4447.71Plocal1020102110221023Aoffset55.9864.2372.4880.71Plocal102410251026Aoffset88.9497.16105.36If the users find out that the value of Plocal is an integer, they can directly obtain the correspondingaltitude offset value in the above table; if the Plocal has decimal numbers and the value is larger than P1and smaller than P2 (P1 and P2 are two adjacent pressure values in the table), the user shall firstobtain the corresponding altitude offset value A1 and A2 in the table, than use either of the followingtwo formulas to calculate the desired altitude offset value A:A = A1 + 8.326 x (Plocal – P1), or A = A2 - 8.326 x (P2 – Plocal)For example, the Plocal is 1016.4 mbar, which is between 1016 mbar (P1) and 1017 mbar (P2). Looking upthe table, A1 is 22.86 m and A2 is 31.15 m. Thus:A = 22.86 + 8.326 x (1016.4 – 1016) = 26.19 m, or A = 31.15 - 8.326 x (1017 – 1016.4) = 26.15 mEither of the results is acceptable. After obtaining the value of A, no matter by looking up the tabledirectly or by calculation, the user shall multiply the A by 100 in order to convert the unit frommeter to centimeter.Finally, convert the result to a 2’s complement number to obtain ALT_OFF, and fill it into the tworegisters. The following table shows 2 examples with the calculated altitude offsets and theircorresponding values to fill into the two registers.HP203B_DataSheet_EN_V2.0www.hoperf.com12 / 18OffsetHex ValueALT_OFF_MSBALT_OFF_LSB50.02 m0x138A0x130x8A-100.05 m0XD8EB0xD80xEBFor Example:6.2 Setup the Events Detection Parameters6.2.1 PA_H_TH_LSB, PA_H_TH_MSB - (RW)The two registers form the 16-bit value of PA_H_TH which saves the pressure (or altitude) upperbound threshold for event detection. When the PA_MODE bit in the INT_CFG register is set to 0, thecontents stored in these registers are the pressure thresholds. Its value should be a 16-bit unsigned