3
the only active signals. A straight-through 9DB serial cable (not null modem- see cable specifications on page 3) will work for
most CPUs.
COMMAND PROTOCOL
CPU controller commands supported by the unit are defined below. All commands should be terminated with a <CR> (carriage
return). All characters in the command string should be upper case, and all numbers below 10 should have a leading 0
(ex: 1 = 01).
Legend: (All numbers must be two digits)
BR : Baud Rate Code (03,06,12,24,48,96)
OP : Output Port (01,02)
<CR> : Carriage Return (Hex 0xD)
Command Definitions
Command
String Good Response Description
CS 01,OP,01 *<CR> Connect One Output Port To Input Port
RO 01,01 *<CR>IP<CR> Read Connection For Output/User Port
CB 00,BR None Change baud rate of serial line
BR=03(00),06(00),12(00),24(00),48(00),96(00)
Factory default is 9,600 (see note below)
RS 01 *<CR> Internal Reset
RV 01,00 *<CR>string\0<CR> Read NTI Version String
RU 01 *<CR>IP,OP<CR> Read Unit Size
If the syntax of a command is incorrectly entered, the command will be ignored or the switch will answer with a bad response
?<CR>.
Note: The baud rate as changed via RS232 will hold only until the VIDMUX is power cycled. On power-up, the VIDMUX
will resume the default baud rate of 9600.
Note: If the baud rate of the VIDMUX is changed from 9600, be sure to change the baud rate of the user terminal as well.
Note: Each time the SE-15V-2 is power-cycled, it will connect the video to “MONITOR 1” by default.
SPECIFICATIONS FOR STRAIGHT-THROUGH RS232 SERIAL CABLE
VIDMUX to PS2 CPU (9 PIN)
VIDMUX PS/2 CPU
9 pin Signal 9 pin
Function Pin # Direction Pin # Function
RxD 3 3 TxD
TxD 2 2 RxD
CTS 7 7 RTS
RTS 8 8 CTS
DSR 4 4 DTR
DTR 6 6 DSR
SG 5 5 SG
Terminals 7 and 8 are jumpered together and terminals 4 and 6 are jumpered together.
1
Mating Face
of a 9DB Male
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