HJT Model 100 User's Guide Appendix A-1
Appendix A. Extron Switcher Interface to Model 100
This appendix provides instructions on how to set up and configure the HJT Model 100
Projector for proper operation with Extron Switchers 10+, 8, and 4LD.
The baud rate for the Extron switchers is 19200. Since Port A is locked to a baud rate of
9600, Port B should be used for Extron Switchers. The projector port assignment must
be selected and the VIC channel assignment must be edited for a switcher.
To select the Baud Rate:
1. From the MAIN MENU, select #7, SYSTEM, then #4, COMM. SETUP.
2. From the COMM. SETUP menu, select PORT B SPEED.
3. From the SPEED SELECTION LIST, select 19200.
4. Press ESCAPE to go back to the COMM. SETUP level.
To set the projector port assignment:
1. From the COMM. SETUP menu, select PORT B DEVICE.
2. From the DEVICE TYPE list, select #3, VIDEO SWITCHER.
3. Turn power OFF at the remote control.
4. W ait unt il the Arc Lamp fans have stopped running, and provide a system
cold boot by toggling the circuit breaker on the projector rear panel to OFF,
then back to ON.
To edit the VIC channel assignment (refer to Section 4.11 on page 4-39
for more information on editing):
1. From the CHANNELS list, select t he channel t o assig n the switcher.
2. Press MODE. This is a toggle k ey that brings up a submenu for editing
(pressing MODE again removes the submenu.)
3. Select EDIT from the submenu and press ENTER.
4. Use the right arrow ke y to t og gle over to the third VIC column.
5. Press ENTER and use the up/down arrow keys to select the current switcher
channel number. Press ENTER when the current switcher channel number is
shown.
6. Press ESCAPE to exit the EDIT MODE.

A.1 Extron Switcher Configuration

The Extron switcher must have two (2) important parameters for it to work
optimally. First, it must be in the Master mode. If in Slave mode, the display
power and video mute buttons are internally inhibited. Second, it must receive a
projector Power On message. This message is sent routinely during a projector
Power On sequence. If the Power On message is not received due to cabling
problems, baud rate problems, projector configuration, or switcher emulation
problems, the video mute will not work properly.