GeoVision GV-AS2120 IP Control Panel - Manual (Page 197)

Optional Devices
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9
9.2.4 Installation
This section describes how to connect other devices to GV-ASNet.
9.2.4.A Connecting GV-AS100 / 110 / 120
The table and figure below show the pin assignments of related connectors on the rear view
of the GV-ASNet for connection to GV-AS100 / 110 / 120
.
Figure 9-10
Pin Function Pin Function
12V+
12V Power Supply to
GV-AS100 / 110 /120
12V-
GND for Power Supply to
GV-AS100 / 110 / 120
RS485A+ GV-AS100 / 110 / 120
Connection
RS485A-
GV-AS100 / 110 / 120
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-ASNet 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-ASNet and the GV-Readers is over a long distance,
RS-485_B Term
must be
switched to ON.