58
2.2.4 Connecting Card Readers
GV-AS200 supports two types of card readers: Wiegand and RS-485 interfaces. The
Wiegand interface is compatible with any Wiegand card readers of 26 to 40 bits, while the
RS-485 interface is only compatible with GV-Readers. The card readers of the two interface
types can be used together to work with GV-AS200.
12V
D0
D1
GL
RL
BZ
GND
Wiegand D
12V
Wiegand Card Reader
Card Reader
AND
-
+
RS-485
GND
Wiegand
Figure 2-12
2.2.4.A Wiegand Readers
GV-AS200 provides up to 4 Wiegand inputs (Wiegand A, B, C, D) for connection of Wiegand
readers ranging from 26 to 40 bits. The table below shows the pin assignments of the
Wiegand connectors on GV-AS200. Please consult the documentation of your Wiegand
reader for wiring.
Pin Function
12V 12V Power Supply
D0 Wiegand Data-0
D1 Wiegand Data-1
GL Green LED
RL Red LED
BZ Beeper
GND GND for the Power Supply