User's Manual

Table Of Contents
In Figure 23, 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. 1.2K will pro-
vide 20 mA LED current when run from 24 Vdc.
In Figure 24 the output acts as an Open Collector. This will provide a TTL
or CMOS compatible signal when a 1K to 10K pull-up to +5 Vdc (the logic
supply) is used.
Copyright © 2000 Escort Memory Systems
22 LRP830-Series Long-Range Passive Reader/Writer
Figure 23 Sinking Output LED Driver
Figure 24 Output to TTL or CMOS