Specifications

C•CURE apC/L Technical Manual
Card Reader Configurations
4-5
Although these two methods differ physically, they are the same
electrically because Reader Ports A and B are actually tied together in the
apC/L.
Multidrop Configuration When connecting readers in a multidrop
configuration, locate them no more than 3 ft. (0.91 meters) from the
multidrop line.
See Appendix B for information about calculating this maximum distance
and cable requirements for readers.
See Figure 4.3 for information on connecting the readers to the apC/L
reader ports.
For information on Star Configuration connections, see “To connect
readers to the apC/L in a star configuration:” on page 4-7.
Note This also means that the maximum distance of 4,000 ft. from the
last reader to the host is the combination of the distances for the
two ports. It is not 4,000 ft. for each port.
Note Be careful to ensure that all pin numbers 1 are tied together on
the reader bus. Reversing the +12V and ground will cause
damage to the equipment.
apcl.bk Page 5 Monday, May 15, 2000 3:21 PM