Figure 4 :: Regulated 5V Dc Supply; Figure 5 :: Dual Redundant Power Supplies - Lightware SF02 Product Manual

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SF02

Laser rangefinder

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Power supply option 3: Regulated

The third power supply option is to use a regulated 5 V supply connected between screw terminals 2 and 3. In this configuration

terminal 1 is not used. The 5 V DC supply would typically be taken from an existing power rail that is used to supply other electronic

equipment.

CAUTION: The +5 V power input on screw terminal 3 is not protected from reverse polarity. Damage to the SF02 will result if this

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connection is reversed.

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Power supply option 4: Dual redundancy

For high reliability applications, dual redundancy of the power supply can be achieved by connecting both a battery and a regulated

5 V supply. In this configuration, the +5 V must be supplied through a reverse protection diode with a low forward voltage drop. We

recommend using a 1N5819 Schottky diode. Under normal conditions power is drawn from the +5 V supply but if this supply fails then

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power will be drawn from the battery.

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SF02 Laser Rangefinder - Product Manual - Revision 4

Product manual

Figure 4 :: Regulated 5V DC supply

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