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A D VA N C E D F E AT U R E S
PA GE 5
VG A44 I NSTAL LATION & OP ERATI ON MA NUAL
RS232
The AMAV switcher can be controlled via the RS232 serial control port to
allow for interfacing to a PC, Crestron or similar third party control system.
The serial communication parameters are 9600 baud, 8 bit, No Parity and 1
stop bit – this is often referred to as 9600 8N1. When the unit recognises
a complete command it will perform the requested action – there is no
delimiter character required.
The unit does not send out a message when a value is changed from the
front panel or by IR control. If the unit needs to be controlled from the front
panel in addition to the RS232 control, you would need to regularly poll the
units’ status to ensure the control system accurately reflected the current
settings.
COMMANDS
To Switch Inputs to Outputs
SBIøXOøY Where X is Output Number (1-4) and Y is Input
Number (1-4)
Unit will respond with
SBUDøXOY Where X is Output Number (1-4) and Y is Input
Number (1-4)
Example : Send Input 1 to Output 4
SBIø1Oø4 - Send
SBUDø1O4 - Rcvd
STANDBY MODE
Note : Turning the unit System Power Off over RS232 will blank
the displays leaving only the Power Switch LED on. Hard
resetting the unit when in System Power Off mode will return the
unit to normal operation and unlock the front panel.
Even while the unit is turned off by RS232 it will continue to accept and act
upon switching commands. This allows you to set up a ‘scene’ before soft
powering on the unit and enabling the video outputs. The unit will still return
status and change messages in response to commands sent while in System
Power Off mode.
SBSYSMON - Put system into Standby (Soft Power Off)
SBSYSMOF - Bring unit out of Standby (Soft Power On)
Unit will respond with
SBALOFAK - Unit is in Standby
SBALONAK - Unit is no longer in Standby
Example : Put Unit in Standby (Soft Power)
SBSYSMOF - Send
SBALOFAK - Rcvd
FRONT PANEL LOCK
Note : Hard resetting the unit will unlock the Front Panel controls.
.
SBSYSMLK - When front panel is locked, changes can only be
made by RS232
SBSYSMUK - Front Panel Unlock
Unit will respond with
SBSYSLOK - Front Panel has been Locked
SBSYSULK - Front Panel has been Unlocked
Example : Lock Front Panel Buttons
SBSYSMLK - Send
SBSYSLOK - Rcvd
UNIT RESET
SBSYSMLK - Reset every output to Input 1
Unit will respond with
SBRSTACK - Unit has reset each Output to Input 1
Example : Reset all outputs to Input 1
SBALLRST - Send
SBRSTACK - Rcvd
VGA44 manual.indd 5 12/3/07 2:24:59 PM