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KNOX VIDEO
MediaFlex Series Audio/Video Distribution System
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KNOX VIDEO
MediaFlex Series Audio/Video Distribution System
3.4 CONTROL VIA THE RS232 PORT
The RS232 data port allows complete setup and control of the HD16 through
a simple alphanumeric protocol or using the Knox HD16 DOS Setup Program. The
RS232 port will accept inputs from a computer terminal or other software-driven
RS232 control device.
3.4.1 USING AN RS232 TERMINAL DEVICE
A simple protocol allows all crosspoint and setup commands to be sent
through the MediaFlex’s RS232 port. The RS232 port will accept inputs from a
terminal, computer, or other software-driven control device. Set the RS232 driver
for 9600 baud, 8 bits, no parity, and one or two stop bits, flow control NONE. The
COM port of a PC-compatible device may be connected to the 9-pin female RS232
connector with a standard pin-for-pin serial cable.
There are two general types of commands: letter commands which start with
a B, V, A, I, or M, generally crosspoint commands, and $ commands, generally
volume and tone commands, which start with the dollar sign. Certain other
commands are used only for setup. The MediaFlex Series will echo all ASCII
characters and acknowledge completed valid letter commands with the word
DONE. Invalid commands will result in the message ERROR.
The designation (ENTER) in the commands below means Carriage Return, or
hex 0D. Do not send a Line Feed (0A) with the Carriage Return.
See section 3.4.8 for a summary of all RS232 commands.
For example, the following consecutive commands sent over some period of
time E010l[ENTER}, E0202[ENTER], E0303[ENTER}, B0404[ENTER) will result in
connecting input 1 to output 1, 2 to 2, 3 to 3, and 4 to 4 when the last [ENTER] is
received.
3.4.5 HOW TO STORE AND RECALL CROSSPOINT PATERNS
Up to sixteen complete crosspoint and sound configurations may be stored
in non-volatile memory.
To save the present crosspoint and sound control settings into memory send
a command in the form:
Sx or Sxx, where xx is a number from 1-16
(storing a new pattern will erase the pattern presently stored under that number)
To recall a stored pattern of crosspoint and sound settings send a command
in the form:
Rx or Rxx, where xx is a number from 1-16
(if no pattern has been stored under that number, all crosspoints will be
turned OFF)
