VISTEK V1679 single-mode fibre
data transceiver
20
Issue 1
This example illustrates the use of two V1679's for controlling camera tilt-heads through RS-422 at an
outdoor venue. Assuming that only one fibre link is available, a CWDM module is used for multiplexing/de-
multiplexing different laser wavelengths, in this case not only from the V1679's, but also from a V1673 Dual
Fibre Transmitter (/TT) and Dual Fibre Receiver (/RR) pair for the actual video link back to the control room.
V1679/xx
V1679/xx
COM1
COM2
RS-422
up to 50km single-mode fibre
GPIO
COM1
COM2
GPIO
Laser Tx
Laser Tx
PIN-TIA Rx
PIN-TIA Rx
Up to 16 GPIO's
Up to 16 GPIO's
RS-422 Camera Control Example using
two V1679 Fibre Data Transceivers
Camera 2
Camera 1
RS-422
(Control Panels and Rack Enclosures are not shown in this diagram)
V1673/RR
V1673/TT
R
S
-4
22
R
S
-4
22
SDI In
SDI In
C
W
D
M
C
W
D
M
Laser Tx
Laser Tx
PIN-TIA Rx
PIN-TIA Rx
SDI Out
SDI Out
Note:
Each Laser Transmitter must emit a different CWDM wavelength!
To other processing modules
Remote Site (e.g. Outdoor Venue)
Local Site (Control Room)
SDI @ 270Mb/s
SDI @ 270Mb/s
Control 2
Control 1
Figure 11 : RS-422 Example