Black Box mm146 User Manual page 60

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Use the number keys to select an option in the list.
2.
Data Port 1
Baud Rate
Handshaking
Use the Right and Left arrow keys to display the correct
option for the port:
Select EXT CAM1 for an RS-232 connection to an external
pan/tilt/zoom camera. Press the ENTER key to make this
selection. You will notice a change in the menu options.
Press the number 2 key to select Protocol. Use the Right and
Left arrow keys to scroll through the options and select
external camera driver you require. Select either Sony EVI
or VCC3/4 depending on the camera you have.
Select DATA for an application that passes data, and the data
channel is open when the call connects. This is the option to
use if you are connecting an alarm system.
Select EXT DATA for a data channel that is closed when the
call begins and can be turned off and on by the user during
the call.
Select HOST if you are using a PC program such as
HyperTerminal.
Select ---- to disable the port.
Set the Baud Rate using the Right or Left arrow keys.
This field determines the data rate at which the data port
operates and varies according to equipment.
Select SOFT, THRU or NONE using the Right or Left
arrow keys.
The Handshaking field setting determines whether the data
port will use Handshaking for flow control to the local
connection.
If SOFT is selected, the videophone sends X-ON and X-OFF
characters to control the flow of information over the video
call. Soft Handshaking is needed when the local connection
may be set for a baud rate which is equal to or greater than
the video connection rate, or when the equipment at the local
end may not always be able to keep up with the incoming
data transfer.
If THRU is selected, the videophone monitors the RTS/CTS
line and transmits this line to the remote location, allowing
for a pass through of the RTS/CTS line used by NetMeeting
and any other program/device that uses these lines for
handshaking.
Select NONE if no Handshaking is required.