Figure 6 :: Usb Communications; Figure 7 :: Analog Interface, Analog Voltage Output; Figure 8 :: Digital Interface, Digital Alarm Output - Lightware SF02 Product Manual

SF02
Laser rangefinder
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USB interface
The SF02 has a mini USB interface that can be used to communicate with LightWare Terminal software on a PC. This connection also
provides power to the unit thereby presenting a quick way to test and configure the SF02. The associated serial port transmits at
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115200 baud with 1 stop bit and no parity or handshaking. More details are discussed in the "Menu options" section below.
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Analog voltage output
The analog voltage interface on screw terminal 7 produces a linear voltage of between 0.0 V and 3.3 V that is proportional to the
measured distance. The actual distances of the 0.0 V and 3.3 V end points can be adjusted through the menu system. The analog
voltage can be measured by the host controller using any available analog-to-digital-converter (ADC). The voltage is updated 12
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times per second and has 10 bit resolution.
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Alarm output
The alarm output on screw terminal 6 is a digital warning signal that becomes active when an object is closer than a preset distance.
The alarm distance can be set using the menu system. The alarm is active high with an output of 3.3 V. This alarm signal can be
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connected to an available digital port pin on the host controller and read as: low = safe and high = alarm.
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SF02 Laser Rangefinder - Product Manual - Revision 4
Product manual
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Figure 6 :: USB communications

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Figure 7 :: Analog interface, Analog voltage output

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Figure 8 :: Digital interface, Digital alarm output

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© LightWare Optoelectronics (Pty) Ltd, 2013