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8.1.4
Sense - for AutoTrack™ Function
The Sense Level relates to how the AutoTrack™ routine views the video input from the computer. If running
AutoTrack™ produces a resultant image that is too big for the video monitor, it may be because the image is too
dark for the Scan Converter to correctly find the edges of the picture. Altering the Sense Level setting will
change the brightness needed to find the edges satisfactorily.
A setting of 1 will sense 30% brightness levels, 2 will sense 60%, and 3 will sense 90% (approximately).
1 is the default, and should be fine for almost all screen displays.
Run the AutoTrack™ after changing the Sense setting to ensure a good image on the video monitor. If
the image is still not good enough, it may be necessary to set the Scan Converter manually - see Manual
Set.
To increase the Sense value, press the + Button.
To decrease the Sense value, press – Button.
8.1.5
IR (Infrared) - On/Off
This feature is useful when controlling multiple units installed nearby, so that only one unit will respond to
Infrared Remote Control commands. It can also be used in situations where stray or random IR signals may be
picked up or even to prevent others from remotely altering the unit's features.
Press the – Button in order to disable the Infrared Remote Control.
Press the + Button to restore control to the Infrared Remote Control.
8.1.6
RGB Term. – Computer Loop-Through Termination
This relates to whether or not the Scan Converter is terminating the computer monitor loop through connector
on the back of the Scan Converter with a 75-Ohm termination.
Usually the Scan Converter will set the termination automatically ('Auto' Mode) by sensing whether a
computer monitor is connected to the back on the unit’s VGA OUT connector.
However, if necessary, it is possible to turn the termination off. For example, if the Scan Converter does
not sense that the monitor is attached, this would result in 'double-termination' of the RGB signals and a
very low video level.
Press the – Button to turn the termination off
Press the + Button to switch to the Automatic Mode.
8.1.7
RS-232 - Control/Mouse
This switches the use of the Scan Converter’s RS-232 Serial Port between Computer Control and Microsoft®
Serial Mouse emulation
In order to use the Infrared Remote Control unit to emulate a Mouse, this RS-232 adjustment must be set
to Mouse Mode. Similarly, to use a Serial link from the computer to control the Scan Converter, it must
be set to RS-232 Control Mode.
Press the – Button to switch to Mouse Mode.
Press the + Button to switch to RS-232 Control Mode.
Note
- the default is 'Control' mode - you must switch to 'Mouse' mode in order to enable the mouse emulation.
8.1.8
Baud Rate - For RS-232 Control
In order to control the Scan Converter from the computer, it is necessary to set the same Baud Rate for both the
Scan Converter and the controlling computer.
Press the + and – Buttons to change to the required number. The Scan Converter’s LCD does not display
the actual Baud Rate, but a number relating to it. The table in a later section of this manual on 'RS-232
Control' shows which Baud Rate each number represents. For example, to set the rate to 9600 Baud, the
number must be 23.
"9600,N,8,1" is the default setting - i.e. no parity is used, 8 data bits are required, and 1 stop bit.
This number is only used in RS-232 Control Mode. Mouse Mode ignores this number, and always uses
1200 baud.
8.1.9
RS-232 ID
This ID code can be used where multiple Scan Converters are all linked via a serial cable to the same computer.
The ID can be altered so that each unit's ID is unique, thus each unit could be adjustable by itself, from one
serial port. This feature is described further in a later section.