Electrical Interface

Figure 30: Sinking Output LED Driver

In Figure 30, the LED and current limiting resistor are in series between the positive supply and the +OUT terminal. The -OUT terminal is grounded. The resistor in series with the LED sets the forward current.

1.2 K provides 20 mA LED current when run from 24 VDC.

Figure 31: Output to TTL or CMOS LogicIn

In Figure 31, the output acts as an Open Collector. This provides a TTL or CMOS compatible signal when a 1 K to 10 K pull-up to +5 Vdc (the logic supply) is used.

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LRP2000 Passive Reader/Writer

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Escort LRP2000 manual Sinking Output LED Driver