Qvis G3-mini keyboard User Manual - page 4
RJ45
2
Picture 2-1.1
Picture 2-1.2
2. Keyboard Connection
2.1 Keyb oard In terface Instruction
There
is a n interface on the back of the keyboard,
which
allows you to either have a direct
connection to the PTZ cameras or a connection
via a network.
Connection
2.1.1 RS422 and RS485 i nterface
Rs422 and Rs485 inter face are on the 6bit
ribbon cable connection of the key board.RS485
(A + B-) can connect with the dome when the key-
board controls the dome directly;RS485
A+
B-
can connect with DVR or other key boards when
the keyboard controls the dome by matr ix; Rs422
(T
,T
) is sending the signal ,RS422(R
,R
)
is receiving the signal , both of which can connect
with matrix, DVR and so on.
（
，
）
＋ －
＋
－
2.1.2 R
J45 Interface
6Bit Ribbon
Cabl e
Pow er Sup ply
Port
This is the standard network interface, which is mainly
used for connecting the keyboard with the control matrix
over short distances (less than 7.6m). For more details
please see "2.3 matrix connection".