Specifications
Mica Installation Planning Guide - Sept 2011
Page
29
For installations needing longer runs you may also use an RS-422 configuration, which extends
the maximum length to 1,200 meters (4,000 feet). Note, not all Sony VISCA cameras
support RS-422 communication. When using an RS-422 connection, there are 3 configuration
options, and depending on installation needs, you may connect cameras in a daisy
chain, star or star/daisy chain combination.
The single camera or daisy chain configuration, (option # 811) includes a DB 9-pin RS-232 to
screw terminal RS-422 converter, which plugs into the server in either COM 1 or COM 2.
From the screw terminal you may connect your first camera using the 9-pin connector plug
provided with the camera. From the same connector you may loop communication to the
rest of your cameras. See below for wiring diagram.
If controlling more than one camera, there is an optional 4 or 8 port Edgeport serial extender
(option #814 or #818) which plugs into a USB port on the server. It provides either 4 or 8 DB 9-pin
RS-422 connectors to accommodate a star configuration or a star/daisy chain configurations. This
method is useful when needing to run long home run to various studios, from which you can then daisy
chain. Depending on your installation needs, this may save in cable runs. See below for the wiring diagram.
Sony Camera Control Option #811/814/818 (RS-422)
Serial Cable using
9-pin connector plug
422 Serial Cable
Mica
Com 1 or Com 2
Sony VISCA RS-422 Daisy
Chain Configuration:
Pin Function
3 TXD (A) -
7 TXD (B) +
8 RXD (A) -
4 RXD (B) +
5 GND
Function
TXD (A) -
TXD (B) +
RXD (A) -
RXD (B) +
GND
Pin Function
7 RXD (B) +
6 RXD (A) -
9 TXD (B) +
8 TXD (A) -
5 GND
1
2
3
4
Pin Function
3 RXD (B) +
4 RXD (A) -
1 TXD (B)+
2 TXD (A) -
5 GND
6
7
8
9
RS-422 Pinout to Connector Plug:
BRC-300/BRC-H700 EVI-70
DB 9-Pin Serial Cable Pinout:
USB A-B Cable
Mica
Any USB Port
Sony VISCA RS-422 Edgeport
Configuration:
Edgeport
Pin Function
7 RXD (B) +
6 RXD (A) -
9 TXD (B) +
8 TXD (A) -
5 GND
Pin Function
3 RXD (B) +
4 RXD (A) -
1 TXD (B)+
2 TXD (A) -
5 GND
BRC-300/BRC-H700 EVI-70