Knox Video RSIII - Manual (Page 16)

3.3.3 USING THE MUTE BUTTON
The Mute button under the display can be used to mute any output. Turn the Rotary Switch until
the output you wish to mute shows on the display, then push the Mute button. You will be
prompted to verify the output number so push Mute again, or push Clear. A letter M will appear
next to the Volume indicator in the second line of the display in place of the polarity sign, e.g.
V:
M07.
3.3.4 ADJUSTING VOLUME AND TONE WITH THE ROTARY SWITCH
The VT parameters of any output may be changed from the front panel. Turn the rotary until the
display is showing the output you wish to make changes to, then click the rotary (push the knob
in, then release it) until the desired parameter is displayed on the LCD. Rotate the knob to raise
and lower the volume or cut and boost the tone. Wait 10 seconds or press the Clear button to
return to the status display.
3.4 CONTROL VIA THE SERIAL RS232/RS422 PORT OR ETHERNET PORT
The RS-232/RS-422 serial data ports on the rear panels allow complete control of the RSIII from
a computer terminal or other software-driven control device. Through a simple alphanumeric
protocol, commands to configure and control the RSIII can be accomplished. The rear panel DB9
serial connector will accept RS-232 or RS-422 serial data. A simple ASCII protocol allows all
crosspoint and setup commands to be sent serially through the RSIII’s RS-232/RS-422 or
Ethernet ports. These ports will accept commands from a computer, or other third party control
device. Set the control device to 9600 baud, 8 bits, no parity, and one or two stop bits, flow
control NONE. When using the serial port mode the COM port of a PC-compatible device may
be connected to the rear DB9 connector with a standard pin-for-pin serial cable. An Ethernet
driven controller must be configured for IP address and port selection. See section 2.7 for setup
and wiring details.
There are two general types of commands: letter commands, such as B, V, and A, generally
crosspoint commands, and $ commands, generally volume and tone commands. The $ commands
are commands which start with the dollar sign. Certain other commands are available but are only
use for setup and control. All commands to the RSIII are not case sensitive. The RSIII will echo
all ASCII characters sent to it and acknowledge completed valid commands with the word
DONE. Invalid commands will result in the message ERROR and a short description of the error
being returned.
The designation [ENTER] in the commands below means Carriage Return, or
hexadecimal 0D. It is not necessary to send a Line Feed (0A) with the Carriage Return.
The RSIII has a maximum of 16 input and output channels. For compatibility with other Knox
Video Technologies’ switches one, two or three digits can be used for the input and output
channels with most commands. However, the number of digits must be consistent. The number
of digits in the output portion must match the number of digits in the input. This is best shown
with an example. Suppose a video connection between a TV attached to output 2 and a DVD
player attached to input 11 is to be made. The correct syntax would be
V0211 [ENTER] and
not V211 [ENTER] . Likewise, V002011 [ENTER] would also have the same correct
results.