GeoVision GV-AS2120 IP Control Panel - Manual (Page 187)

Optional Devices
185
9
9.1.4 Installation
This section describes how to connect other devices to GV-ASBox.
9.1.4.A Connecting GV-AS100 / 110 / 120
The table and figure below show the pin assignments of related connectors on GV-ASBox
for connection to GV-AS100, GV-AS110 and GV-AS120
.
1 2
ON
GND 12V
A+ A- B+ B-
GV-AS100
/110/12
0
GV-Read
ers
RS-485_
A T
ERM
RS-485_
B T
ERM
Figure 9-2
Pin Function Pin Function Pin Function
12V 12V Power Supply to
GV-AS100/110/120
A+
GV-AS100/110/120
Connection
B+
GV-Readers
Connection
GND GND for Power Supply to
GV-AS100/110/120
A-
GV-AS100/110/120
Connection
B-
GV-Readers
Connection
Note:
1. By default,
RS-485_A Term
and
RS-485_B Term
are set to OFF.
2. When the distance between the GV-ASBox and the GV-AS100 / 110 / 120 is over a long
distance,
RS-485_A Term
must be switched to ON. When the distance between the
GV-ASBox and the GV-Readers is over a long distance,
RS-485_B Term
must be
switched to ON.