Figure 10 :: Altitude Represented By Distance (Serial / I2C) And Analog Voltage - Lightware SF10 Product Manual

SF10
Laser altimeter Product manual
d: I2C bus address (0x00 ... 0x7F)
The I2C bus operates in slave mode and accepts an 8 bit address (7 address bits plus 1 read bit) before responding with a 16 bit,
binary coded integer that is the altitude in centimetres. The address can be set by selecting menu item <d> and is entered as a 7
bit, hexadecimal number.
e: Analog distance range (SF10/A: 1.00 m ... 30.00 m, SF10/B: 1.00 m ... 60.00 m & SF10/C: 1.00 m ... 120.00 m)
The distance at which the maximum analog output of 2.56 V occurs can be set by selecting menu item <e>. The output voltage can
be converted back into a distance by using the formula:
a = v / 2.56 * c
where:
a = measured distance
v = voltage measured by the ADC of the host
c = 2.56 V distance setting
The analog voltage output updates 16 (SF10/C) or 32 (SF10/A and SF10/B) times per second and has a 12 bit resolution.

Figure 10 :: Altitude represented by distance (Serial / I2C) and analog voltage

f: Analog voltage range (0.00 V ... 2.56 V or 0.00 V ... 3.30 V)
Selects the maximum output voltage of the analog output - either 2.56 V or 3.30 V - by selecting menu item <f>.
g: Analog polarity (0.00 m = 0.00 V | 25.60 m = 2.56 V or 25.60 m = 0.00 V | 0.00 m = 2.56 V)
Selects the polarity of the analog output so that the maximum voltage selected using menu item <f> occurs at the maximum distance
set using menu item <e> or at 0.00 m as required.
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SF10 Laser Altimeter - Product Manual - Revision 11 © LightWare Optoelectronics (Pty) Ltd, 2016