Ring Communications DNA200 - Manual (Page 24)

DNA200 OPERATIONS MANUAL 24 2008/05/01
VIDEOBLOX
PROTOCOL
This video switcher interface is used for systems with multiple Monitors and multiple Cameras.
The Network Address of the DNA200 is programmed for each Masterstation/DAD104 using a video monitor. This
programming is done in the DXC901, DXC910 or EX500. No configuration is required for the sub stations with
camera in the DXC901/DXC910/EX500.
The monitor address and camera address for each call number is programmed in the DNA200 (see Configura-
tion).
COMMUNICATION PROTOCOL
The device receiving from the DNA200 is setup in the following matter:
The interface is using RS232 with baud rate of 9600 bps (see S
ETTING
B
AUD
R
ATE
/D
EVICE
T
YPE
S
ELECT
earlier in this chapter).
8 Data bits, 1 stop bits and no parity (see Configuration),
Hardware flow control (RTS/CTS).
MESSAGE FORMAT
The message format is in the following sequence for output messages from the DNA200:
SWITCH <Camera Address>,<Monitor Address><CR>
PTZRCL<Camera Address>,<Preset Number><CR>
SWITCH .................Switch video input to output
PTZRCL ..................Recal PTC pre-position
Camera Address ......One, two, three or four characters ASCII number
, ..............................Parameter separator
Monitor Address .......One, two, three or four characters ASCII number
Preset Number .........One character ASCII number
<CR> ......................Carrage return
Examples (based on programming exsample at the end of configuration section):
If master station 100(monitor 10) answers a call (on the DAD104) from sub station 105(camera 25) the following
message is sent from the DNA200: SWITCH 25,10<CR>
If master station 101(monitor 11) answers a call (on the DAD104) from sub station 106(camera 26) the following
message is sent from the DNA200: SWITCH 25,11<CR>
If master station 100 disconnects the DNA200 sends: SWITCH 0,10<CR>