Burst Electronics DSR4x1 - Manual (Page 4)

change to a dual output you will need only flip the
toggle switch, that is recessed in the rear panel, from
Ref to Dual. This will negate clean switching between
video inputs because there will no longer be an analog
video signal (or tri-level sync) for the switcher to
reference.
Power
These units are powered from an external 12Vdc
source. Polarity of the included power supply is center
positive, but the units can also operate with center
negative. Only use a DC power supply, do not use an
AC power source. You may damage the unit and will
void all warranties.
Remote Control via RS232 (R Version)
An option that can be installed by the factory is RS232
control via computer. The unit is fitted with a proprietary
connector and shipped with a serial port adapte r and
RJ11 cable. The unit communicates at a selectable
baud rate. This product default baud rate is 2400 8N1.
To change this baud rate, remove the front panel and
slide the top cover off. Directly behind the front panel
keyboard switches is a small 4 -pole piano switch.
Change switch #1 and #2 in the following manor to
configure the baud rate.
SW#1 Open, SW#2 Open = 2400 Baud
SW#1 Closed, SW#2 Closed = 9600 Baud
SW#1 Open, SW#2 Closed = 19.2k Baud
SW#1 Closed, SW#2 Open = 19.2k Baud
NOTE: Leave SW#3 and SW#4 in the OPEN position.
Closing these switches will stop the unit from
transmitting status commands to the computer.
Any terminal emulator (i.e. Windows Hyperterminal or
DSR8x1 & DSR4x1 HD/SD SDI Video Switcher 4