Da-Lite SCB-200 Instruction Book page 6

Installation (Continued)
Troubleshooting
The SCB-200 tracks the screen's location through a cable
connection to the B, +, A and – terminals. The cable is routed to a
small black encoder, mounted to the pin end of the screen's
roller. The encoder shaft must turn on a 1:1 basis and rotate with
the roller pin. If the coupler wires or connector is loose the
screen may not operate or may only travel a short distance
rather than running to the complete motor limit setting.
Notes
Upon power up of the SCB-200, it shall immediately begin a
diagnostic mode routine that verifies settings and prepares the
controller for operation. During this process, the following
activities shall occur:
• Load of relevant settings from EEPROM into
SCB-200 memory
• Auto-detection of the presence of an optional
NET-200 daughter board or slaved screens
• Initiation of the optional NET-200 settings
The power up mode shall remain in effect until each of these
activities is completed. The SCB-200 will not accept or process
communications with any I/O port while in this state.
During the initial configuration of the SCB-200, the following
parameters may be set, using the RS-232 protocol identified in
Appendix A.
• Set DHCP Support *
• Set Custom Aspect Ratios
• Set IP Address *. Additional software (Lantronix and .net
framework) may be required if a static IP address is to be set
or if an invalid IP has previously been assigned. www.lantronix.
com/device-networking/utilities-tools/device-installer.html.
Xport, Device Installer under software and utilities (Please
contact Da-Lite for further assistance).
* Denotes configuration settings related to use with optional
NET-200 daughter board. Refer to the NET-200 user manual
for configuration of these parameters.
When setting custom aspect ratios, the screen is positioned in
the desired position, and the position is stored to a desired
custom preset memory position. There are five available
memory positions for custom aspect ratios.
6
When recalling aspect ratios, the SCB-200 is aware of the
physical aspect ratio of the screen. Any command that requests
an aspect ratio beyond the physical limitations of the screen will
result in the screen being set to its lowest position. When
adjusting aspect ratio, the screen is positioned according to the
image center line. Therefore, the bottom of the screen is adjusted
to the proper aspect ratio position. Please note that remaining
projection screen ABOVE the projected image is not eliminated
when the aspect ratio is recalled.
Usage
To control a screen with an SCB-200 installed, at least one of
the following controllers are required for operation and / or
configuration:
• IR-200 Infrared remote control
• NET-200 Ethernet controller
• WC-200 Wall controller
• Third-partly control system
• An RS-232 connected computer
There are no direct control options for the SCB-200 without one
of these control mechanisms in place. From any of these control
mechanisms, basic operation of the connected screen is
possible. From the NET-200, third party control systems or
an RS-232 connected computer, advanced controls and
configuration are possible. For use of these controllers, refer
to the controller user manual for more information.