GeoVision GV-AS2120 IP Control Panel - Manual (Page 189)

Optional Devices
187
9
9.1.4.C Connecting GV-Readers and GV-GF Fingerprint Readers
You can connect up to
4 units of GV-Readers and GV-GF Fingerprint Readers
to GV-
ASBox. Multiple GV-Readers and GV-GF Fingerprint Readers can be connected with a
single RS-485 cable to separate RS-485 interfaces on GV-ASBox.
Since Wiegand communication distance is shorter than RS-485’s, you can choose GV-
Reader and GV-GF Fingerprint Reader supporting RS-485 communication to add another
door control and meet the need of long-distance installation.
Use the RS-485 B+ B- to connect to GV-Readers and use the RS-485 interface to connect
GV-GF Fingerprint Readers. Refer to the figure below to see where the RS-485 interfaces
are located. When multiple readers are connected together, an extra power supply to each
unit is required. Use the auxiliary power output of
12V
and
GND
on GV-ASBox to power on
each unit.
1 2
ON B+ B-
1 2
ON B+ B
-
RS-485
Connects to GV-GF
Fingerprint Readers
Con
nects t
o
GV-R
eade
rs
Auxiliary
Power
Output
NO5
COM5
NC5
NO6
COM6
NC6
NO7
COM7
NC7
NO8
COM8
NC8
12V
12V
GND
GND
Figure 9-3
To define each GV-Reader and GV-GF Fingerprint Reader, you need to use the GV-
AS100/GV-AS110/GV-AS120 Web interface. See
9.3.2.G Extended Reader Setting
.
Note:
The RS-485 connector on GV-ASBox is only designed for connecting GV-Readers and
GV-GF Fingerprint Readers.