Knox Video SDI8x8 - Manual (Page 3)

KNOX VIDEO
SDI8x8 Routing Switcher
KNOX VIDEO
SDI8x8 Routing Switcher
Page 5 Page 6
3.3.2 HOW TO STORE AND RECALL CROSSPOINT PATTERNS
The SDI8x8 has 8 stored routing map configuration memory locations. These
stored configurations are non-volatile and are thus maintained during power
interruptions.
To RECALL and load one of the stored patterns from front panel, push and
hold input button #1; an R will appear on the LED display. Then push an output
button, 1 to 8, corresponding to the crosspoint pattern you wish to recall.
To STORE the currently loaded crosspoint pattern to one of the eight pattern
storage areas, push and hold input button #8; an S will appear on the LED display.
Then push an output button, 1 to 8, corresponding to the storage area you wish to
store the crosspoint pattern in.
3.4 ROUTING VIA THE RS232 INPUT
3.4.1 ROUTING SDI VIDEO
A simple protocol allows all crosspoints to be set through the RS232 port. The
RS232 port will accept inputs from a terminal, computer, or other software-driven
control device. No handshaking is required, but the SDI8x8 will answerback in one
of two modes to each command received (see section 3.5 for details).
The SDI8x8 RS232 port is configured as a DCE. The pin-out of this port allows
connection to an IBM-PC or compatible 9 pin serial COM port with a 1:1 cable.
To route video, send a four-byte command in the form:
Vxy(ENTER),
where x is an output number and y is an input number. The leading letter may be a
V or a B.
Each time a routing command is sent, the RS232 output line responds in
accordance with the verbose/non-verbose switch setting (see section 2.6).
3.4.2 TURNING AN OUTPUT OFF
Any output may be turned off by using a 0 (zero) as the input number. Thus the
command:
B10(ENTER)
turns output 1, and its front-panel crosspoint LED, OFF.
All outputs may be turned off by sending the command:
C(ENTER)
All crosspoint LEDs will go off.
3.4.3 STORING AND RECALLING CROSSPOINT PATTERNS
To RECALL and load one of the eight crosspoint patterns in the backed-up
memory, send the three-byte command:
Rn(ENTER),
where n is a number from 1 to 8.
To STORE the currently loaded crosspoint pattern to one of the eight pattern
storage areas, send the three-byte command:
Sn(ENTER),
where n is a number from 1 to 8. The pattern stored in that memory area will be
overwritten by the new pattern.